Drive Solutions for the Global Oil and Gas Industry ... - GE Energy

Drive Solutions for the 

Oil and Gas Industry 

metals 

cranes 

paper 

cement 

oil & gas 

mining 

utilities 

rubber & 

plastics

About TMEIC GE 

TMEIC GE is a joint venture between General 

Electric, Toshiba, and Mitsubishi Electric in the 

industrial system drives business. 

The adjacent 

diagram shows how the companies came together 

between 2000 and 2003 to create an organization of 

2,200 people with annual sales exceeding $2B. 

TMEIC GE is built upon the combined and proud 

heritage of these great companies. We focus on the 

customer, working to provide superior products and 

excellent service, delivering customer success every 

project, every time. 

General 

Electric 

Toshiba 

Mitsubishi 

Electric 

TMEIC GE Automation Systems 

Adjustable Speed Drives in the Oil & Gas Industry 

Every step of the way, from the wellhead to the finished 

fuel products, large, adjustable-speed drives are use to 

start motors and control flow. 

In gas & oil pipelines, driving large pumps and 

compressors, varying speed to control flow – 

see Application 3, page 10. 

In offshore platforms, driving gas 

compressors and oil pumps, moving 

fluids to onshore – see Application 2, 

page 8. 

In liquefied natural gas plants, driving 

large compressors and varying speed to 

control flow – see Application 4, page 12. 

In refineries, driving large compressors 

and varying speed to control flow – see 

Application 1, page 6. 

The compressors and pumps use drives to smoothly start 

the large motors and continuously adjust the speed to 

control flow. Controlling flow by adjusting speed avoids 

energy wasted in the throttling valves. When large flows 

are involved and the motor energy consumption is 

significant, varying the speed is the answer. 

With large machines, the electrical power savings amount 

to hundreds of thousands of dollars per year. In addition, 

the motor is protected against starting inrush currents, and 

control valve maintenance expenses and resulting 

downtime are minimized. 

Page 2 of 32 

© 2009 TMEIC GE Automation Systems. All Rights Reserved. 

Preliminary 

Revised: 5-22-09

Why Use Electrical Adjustable Speed Drives? 

Here are some of the reasons to use electrical medium voltage drives: 

Increased Reliability – Pages 5, 6 

Variable speed motor-drive systems are more reliable than traditional approaches such as using 

turbines to control flow. They can also be configured in redundant channel configurations such as 

triple module redundancy (TMR) for very high reliability. 

Dramatic Energy Savings – Pages 5, 6, 10 

With a variable speed motor-drive system, the flow control valve is not required, avoiding large flow 

energy losses. In fact, the variable speed motor-drive system is more efficient than all other flow 

control methods including turbines and hydraulic transmissions. For more information on this topic, 

refer to Selecting Variable Speed Drives for Flow Control in the library at www.tmeicge.com. 

Significantly Less Maintenance – Pages 5, 6 

The oil & gas industry is all about system availability; variable speed motor-drive systems require 

virtually no maintenance. This is in sharp contrast to flow control valves, guide vanes, and turbines 

that do require extensive periodic maintenance and associated downtime. 

Air & Noise Pollution Virtually Eliminated – Pages 6, 12 

Gas turbines used to drive compressors can generate significant air and noise pollution. In populated 

areas, this can be a serious issue. Variable speed motor-drive systems generate no air pollution and 

negligible noise. 

Soft Starting One or Multiple Motors, and Power Factor Correction – Pages 6, 9 

When electric drives start large motors, starting inrush current with associated mechanical and 

thermal wiring stress is eliminated. This removes limitations on motor frequency of starts, reduces 

insulation damage, and provides extended motor life. With synchronization logic, one drive can start 

multiple motors. Many large drive configurations also improve overall system power factor. 

Why TMEIC GE MV Drives Make Sense 

Choose TMEIC GE, a Global Supplier – Page 20 

TMEIC GE sells and services drive systems round the world, supported by engineering and service 

offices and spare parts depots in North America, South America, Europe, Asia, and Australia. 

We’ve got you covered! A Complete Family of Drives – Page 21 

Our family of medium voltage (MV) drives covers all your needs from 450 hp up to 120,000 hp (335 

kW to 90,000 kW); with a wide voltage range up to 7.2 kV to meet your requirements. 

Our Medium Voltage (MV) System Experts can Help You – Page 14 

TMEIC GE drive and motor application engineers bring an average of 20 years of practical industry 

experience to your application. After analyzing your MV system requirements, they can recommend 

the most cost effective solution and design the system for you. 

Common Toolbox Software – Pages 17, 22, 24 

The GE Control System Toolbox is world-class configuration software. It is used on all the TMEIC 

GE drives and legacy GE drives, so once trained, your service engineers can work on any of our 

drives without going back to school. 

Revised: 5-22-09 © 2009 TMEIC GE Automation Systems. All Rights Reserved. 

Page 3 of 32 

Preliminary

Comparison of Electrical & Mechanical Flow Control Methods 

Flow Control Methods 

Power Train Train 

Electrical Drives Drives 

Electric 

Frequency 

Control 

Electric 

Frequency 

Control 

2,216 kW 

Three- 

Phase 

Electric 

Supply 

* Annual Electric 

Cost $1,358,709 

TMdrive-70 

Electric 

Adjustable 

Speed 

Drive (ASD) 

96.4% 

Redundant 

Elect. ASD 

Channel 1 

Channel 2 

Channel 3 

97.3% 

2,136 kW 

Electric Motor 

98% 

Variable speed 

Synchronous 



2,094 kW 

1:1 

1:1 

85% 

1,780 kW 

Gas flow 

Variable speed compressor 

2,196 kW LCI 2,136 kW 

2,094 kW 

1,780 kW 

Three- 

Phase 

Electric 

Supply 

* 

Annual Electric 

Cost $1,346,604 

2,698 kW 

98% 85% 

2,644 kW 



1,780 kW 

Mechanical Control Control 

Valve Control 

Hydraulic 

Variable Speed 

Control 

Steam or Fuel 

Control 

* 

* 

* 

Three- 

Phase 

Electric 

Supply 


Cost $1,654,388 

Three- 

Phase 

Electric 

Supply 


Cost $1,416,492 

Steam, 

Gas, or 

Kerosene 

Motor 

Starter 

Motor 

Starter 

Fuel or 

Steam 

Control 

2,310 kW 


98% 

Fixed speed 


98% 

Fixed speed 

Turbine 

37% 


2,264 kW 

1:1 

1: N 

Hydraulic 

Var. Speed 

Control 

92.5% 

5,659 kW 2,094 kW 

Annual Gas 

Cost $1,963,084 

1:1 

2,094 kW 

85% 

Valve 

Control 

Fixed speed compressor 

85% 

1,780 kW 



85% 

1,780 kW 



* Common conditions for above cases : 

- LCI drive is the basis for cost comparison - LCI has 97.3% efficiency 

- Nominal 4,000 hp compressor 

- Synchronous motor is used, efficiency 98% - Power cost $0.07/kWh. 

- Continuous operation at 85% 

(induction motor efficiency is 95%) 

- Natural gas cost, industrial rate, 

rated speed or equivalent flow 

- Gas turbine has 37% thermal efficiency 

Dec. 2005, is $12.00/1,000 cu ft 

Page 4 of 32 


Preliminary 

Revised: 5-22-09

Save Energy, Increase Reliability, Control Motor Current, Reduce Pollution, Reduce Noise 

Strengths/Limitations Availability Energy Cost 

+ Very high efficiency 

+ ASD has high reliability 

+ Protects the motor against 

starting inrush currents 

+ Can have alternate assignments 

- May require an air conditioned 

area or equipment house 

- May require an increaser gearbox 

+ Very high efficiency 

+ Redundant ASD has very high 

reliability 

+ Protects the motor against 

starting inrush currents 

+ Can have alternate assignments 

- May require an air conditioned 

area or equipment house 


Availability 

1.0000 

0.999992 

0.9990 

Availability 

1.0000 

0.999994 

0.9990 

Advanced Pulse Width 

Modulated drive TMdrive-70 

Adjustable Speed Drive 

The only online 

maintenance required is 

changing the filters 

MTBF is 127,000 hours 

Repair time (MTTR) is 1.0 

hour; spares are required 

Individual LCI channels can 

be isolated and repaired at 

any time while the other 2 

channels continue to drive 

the motor 


Repair time (MTTR) is 1.1 

hours; spares are required 

 

* 

TMdrive-70 ASD flow control 

system uses $1,358,709 of 

electrical energy per year. 

* 

LCI ASD flow control system 

uses $1,346,604 of electrical 

energy per year, the basis for 

cost comparison. 

+ Valve is very reliable 

+ Valve is fast acting for good flow 

control 

+ Valve is compact 

- Large energy loss in the throttling 

valve 

- Valve requires frequent 

maintenance 


+ Can adjust speed well above and 

below the motor speed 

+ Hydraulic transmission is reliable 

- Very low efficiency at lower speeds 

- Dedicated to motor; no redundancy 

- Repair is a lengthy procedure 

+ Can run at high speeds so gearbox 

is not required 

- Gas turbine requires frequent 

maintenance 

- Dedicated to motor, no redundancy 

- Gas turbine can produce air 

pollution and noise 

Note : Efficiency of mechanical devices decreases at 

lower speeds, but electric drive efficiency is constant 

over the operating range, so savings using ASD 

increase as speeds are lowered; see page 31. 

Availability 

1.0000 

0.99963 

0.9990 

Availability 

1.0000 

0.99923 

0.9990 

Availability 

1.0000 

0.9990 

0.9990 

Routine maintenance such 

as tightening packing can be 

done on line 

Control valve is down for 

between 1 to 7 days if it fails 

and there is no spare 

estimate MTTR is 96 hours 

MTBF approx 260,000 hours 

Spare valve required 

Maintenance intervals up to 

80,000 hours 

Hydraulic transmission is 

down for as much as 84 

hours (3 1/2 days) if a failure 

occurs (published literature) 


Gas turbine requires a 

month downtime every 3 

years; MTBF is 8,000 hours. 

Liquid fuel turbine requires 8 

hours downtime every year 

Steam turbine is taken down 

every 4 years 

Assume MTTR is 8 hours 

Mean Time To Repair (MTTR) and 

Mean Time Between Failures (MTBF) are 

based on plant operating experience. 

* Valve flow control system 

uses $1,654,388 of electrical 

energy per year. 

This is $308,000 more than 

the electric adjustable speed 

drive. 

* Hydraulic gearbox flow 

control uses $1,416,492 of 

electrical energy per year. 

This is $70,000 more than the 

electric adjustable speed 

drive. 

* Gas turbine flow control uses 

$1,963,084 of gas energy per 

year. 

This is $616,000 more than 

the electric adjustable speed 

drive. 

Availability = 

MTBF 

MTBF+ MTTR 


Page 5 of 32 

Preliminary

Drive Applications for Compressors & Pumps 

Adjustable speed drives are often used to control the speed of compressors and pumps in the oil and gas industry. Most of 

the ASD applications control flow through pipelines and control the input flow to large process units. The following seven 

pages describe five typical applications and present the reasons why an electrical solution was chosen. 

1. Refinery compressors 4. Gearless high-speed compressor drive 

2. Offshore platform pumps 5. Liquid natural gas plant compressors 

3. Gas pipeline compressors 

Application 1. Refinery 1. Refinery Compressors 

Compressors 

A large refinery used gas turbines to drive two compressors. The turbines generated nitrogen oxides (NOX), noise pollution, 

and required more maintenance than electric motor drives. The refinery looked at using electric motors and hydraulic 

variable speed gearboxes, compared this with electric drives, and chose an electric drive as the best solution. 

The refinery’s new approach was to: 

• Replace the two gas turbines with two electric 

motors of 30,000 hp, and use one LCI adjustable 

speed drive for motor starting and speed control. 

• Use gear boxes to increase the speed input to the 

compressors from the 1,800 rpm motor speed. 

• Use the adjustable speed drive to start one motor 

and synchronize it with the 13.8 kV bus. 

• Employ switchgear to put this motor across the 

line and run the compressor at constant speed. 

• Use the adjustable speed drive to start the second 

motor and continuously vary the speed of the 

second compressor to obtain the flow required by 

the process. 

Advantages of the Drive System 

Very high reliability – The LCI has built in channel and component redundancy allowing operation with 

a single failure without any reduction in power output. Consisting of three parallel active channels, the 

LCI can operate on two channels while the third is being repaired. This is a TMR system with no voting. 

See next page. 

Eliminate air & noise pollution – Gas turbine exhaust NOX and noise are avoided completely, 

producing an environmentally friendly installation. 

The electrical drive system, therefore, does not 

present problems meeting federal and state air and noise pollution limits. 

Energy savings – The LCI provides higher energy efficiency than either gas turbines or hydraulic 

variable speed drives. In addition, the synchronous motors have 17% higher efficiency than the turbines 

they replace. 

Increased run time compared to turbine – Electric drives and AC motors require much less 

maintenance and down time than gas turbines. Drive availability is the highest of all adjustable speed 

choices; for this application 0.999994. 

Page 6 of 32 

© 2009 TMEIC GE Automation Preliminary Systems. All Rights Reserved. 

Revised: 5-22-09

Adjustable Speed Drive System One-Line Diagram 

The TMEIC GE LCI (Load Commutated Inverter) was selected for this drive application. It is a medium voltage drive and 

operates at 4.16 kV. Transformers drop the voltage from 13.8 kV, and after the drive, transformers increase the voltage to 

13.8 kV to supply the motors. The drive has two levels of redundancy as shown in the diagram. 

138 kV bus 

138 kV bus 

Two Levels of Redundancy 

60/65 MVA 

138/13.8 kV 

OA/FA 

13.8 kV bus NO 

18-pulse 

LCI drive 

system 

60/65 MVA 

138/13.8 kV 

OA/FA 

Device Level Redundancy. Each set of six 

silicon controlled rectifiers (SCR) in the power 

bridge includes an extra SCR to create N+1 

redundancy. If one SCR fails, the other five can 

operate at full power. This raises the reliability 

of each channel and also reduces the stress 

on the individual SCRs, providing longer life. 

15 MVA 

13.8/4.16 kV 

One channel power bridge showing 

thyristor (SCR) stacks and water cooling. 

15 MVA 

4.16/13.8 kV 

Exciters 

Channel Level Redundancy. The LCI has 

three 15,000 hp channels, and has the 

capability of driving either of the motors. If 

maintenance is being performed on one 

channel, the other two channels can continue 

to power the motor. The out-of-service channel 

can then be isolated, repaired, and returned to 

service. As a result, the drive reliability is 

extremely high and the equipment up time 

much higher than any other systems. 

30,000 HP, 1,800 RPM 

Synchronous Motor 

M 

30,000 HP, 1,800 RPM 

Synchronous Motor 

Gear boxes & 

compressors 

M 

Power Circuits. The LCI is an 18-pulse drive 

system using thryristors (SCRs) in the 

converters and inverters. The system 

generates only a small harmonic disturbance 

to the power system. 

The two levels of redundancy illustrated above provide a 20-year system Mean Time Between Failures (MTBF) and excellent 

up-time with availability of 0.999994. 


Page 7 of 32 

Preliminary

Application 2. Offshore Platform Pumps 

Application 2. Offshore 2. Offshore Platform Offshore 

Platform Pumps Platform 

Pumps 

Pumps 

Five production pumps on this offshore platform feed oil into a pipeline taking the product to onshore facilities. Three of the 

2,250 hp pumps were under control of adjustable speed drives to adjust the total flow to demand, and the other two were on 

fixed Five production speed. The pumps original on drives this offshore were obsolete platform and feed spare oil into parts a pipeline were difficult taking to the obtain. product In to addition, onshore the facilities. older drives Three required of the 

power 2,250 hp factor pumps correction were under and power control line of filters adjustable to keep speed the power drives clean. to adjust These the total filters flow were to demand, very noisy and for the employees other two working were on in 

the fixed equipment speed. The room original for long drives periods. were obsolete and spare parts were difficult to obtain. In addition, the older drives required 

power factor correction and power line filters to keep the power clean. These filters were very noisy for employees working in 

the equipment room for long periods. 

The oil production company wanted to: 

The • oil production Replace the company old drives wanted with new to: maintainable drives. 

Obtain high drive reliability backed by a five-year warranty. 

• Replace 

Obtain better 

the old 

system 

drives 

power 

with new 

factor 

maintainable 

without the 

drives. 

use of correction. 

• Obtain 

Eliminate 

high 

the 

drive 

noisy 

reliability 

power 

backed 

line filters 

by a five-year 

by using 

warranty. 

drives with 

• Obtain inherent better low harmonic system power distortion. factor without the use of correction. 

• Eliminate Have the ability the noisy to perform power synchronous line filters bypass. 

using drives with 

inherent 

Reduce the 

low 

component 

harmonic distortion. 

count to increase reliability and reduce 

• Have maintenance. the ability to perform synchronous bypass. 

• Reduce the component count to increase reliability and reduce 

In making maintenance. its selection for the new drives, the company regarded 

experienced, local service support from the New Orleans office as 

In important. making its Throughout selection the for process, the new strong drives, application the company support regarded from 

experienced, the TMEIC GE local engineering service support office in from Virginia the proved New Orleans valuable. office as 

important. Throughout the process, strong application support from 

the TMEIC GE engineering office in Virginia proved valuable. 

The first of the three old drives was replaced with a Dura-Bilt5i MV. After evaluation, a second Dura-Bilt was installed on the 

second pump. Each drive is equipped with the components for synchronous bypass in the future, although the actual bypass 

The contactors first of were the three not old initially drives included. was replaced A power with study a Dura-Bilt5i performed MV. by After TMEIC evaluation, GE showed a second that the Dura-Bilt remaining was installed old drive on could the 

second operate pump. without Each any filters drive since is equipped it represents with the a small components portion for of the synchronous load the bypass platform. in the future, although the actual bypass 

contactors were not initially included. A power study performed by TMEIC GE showed that the remaining old drive could 

operate without any filters since it represents a small portion of the load on the platform. 

Benefits of the Dura-Bilt5i MV Pump System 

Benefits of the Dura-Bilt5i MV Pump System 

High Reliability. Advanced design including use of medium voltage Insulated Gate Bipolar Transistors 

(IGBTs), oil-filled capacitors, a built-in copper wound transformer, and surge and transient protection 

creates High Reliability. a drive with Advanced high reliability. design including use of medium voltage Insulated Gate Bipolar Transistors 

(IGBTs), oil-filled capacitors, a built-in copper wound transformer, and surge and transient protection 

creates a drive with high reliability. 

Low Harmonic Distortion. The 24-pulse rectifier’s low harmonic impact of less than 1.5% distortion 

gives clean operation without the use of filters, allowing the original filters to be disconnected. 

Low Harmonic Distortion. The 24-pulse rectifier’s low harmonic impact of less than 1.5% distortion 

gives clean operation without the use of filters, allowing the original filters to be disconnected. 

High Power Factor. The new system has a very good power factor of better than 0.95 and does not 

require any external power factor correction equipment. 

High Power Factor. The new system has a very good power factor of better than 0.95 and does not 

require any external power factor correction equipment. 

Compact Drive. The Dura-Bilt drive system fits in a smaller space than the original system because 

the transformer is integrated into the cabinet and the heat pipe cooling allows a very compact drive. 

Compact Drive. The Dura-Bilt drive system fits in a smaller space than the original system because 

the transformer is integrated into the cabinet and the heat pipe cooling allows a very compact drive. 

Page 8 of 32 

© 2009 TMEIC GE Automation Preliminary Systems. All Rights Reserved. 

Preliminary 

Revised: 5-22-09

Pump System One-Line Diagram 

Platform MV Bus 

In this diagram, Drive 1 is shown 

with a synchronous bypass 

option, which can be added in the 

future. This option will allow the 

drive to: 

DB5i MV 

Drive 1 

Motor 1 

DB5i MV 

Drive 2 

Motor 2 

Older 

Drive 

Motor 3 

Motor 4 

Motor 5 

• Start Motor 1 with low 

current inrush. 

• Bring the motor up to 

synchronous speed. 

• Synchronize the motor with 

the supply bus. 

• Put the motor across the 

line and disconnect the 

drive from the supply. 

• Allow Drive 2 to control 

Pump 2 flow as required 

by the flow demand. 

This configuration allows Motor 1 

to run at full speed without the 

heat losses in the drive. The 

synchronous option can be 

extended to the second drive if 

required. 

Pump 1 

Pump 2 Pump 3 Pump 4 Pump 5 

Future Improvements 

The customer has the option in the future to retire the last old drive and 

install contactors on all motors and the two drives. With appropriate 

PLC control logic, the system will allow either Dura-Bilt to start and run 

any of the five motors, and put them across the line. 

This future system improvement will provide: 

• The maximum flexibility to operate the pumps under a wide 

range of situations. 

• Soft starting available for all motors to minimize system impact 

and deterioration of the windings caused by inrush current. 

• Reduction in the impact of drive downtime since no motor is 

dedicated to any drive. 


Page 9 of 32 

Preliminary

Application 3. Gas Pipeline Compressors 

Application 3. Gas 3. Gas Pipeline Pipeline Compressors 

Compressors 

The remote gas pipeline station used two compressors in series, driven by internal combustion engines. With this 

The arrangement, remote gas non-optimal pipeline flow station often used wasted two energy, compressors and fixed in pumping series, steps driven provided by internal poor combustion pipeline flow engines. control. 

With this 

arrangement, non-optimal flow often wasted energy, and fixed pumping steps provided poor pipeline flow control. 

The pipeline company sought a new motor and 

flow The control pipeline system company which sought would: 

a new motor and 

flow control system which would: 

• Be responsive to fast changes in load. 

• 

Reduce Be responsive 

energy to 

usage. 

fast changes in load. 

• 

Increase Reduce energy 

reliability. 

usage. 

• 

Reduce Increase 

maintenance reliability. 

costs. 

• Reduce 

the maintenance 

heat load costs. 

in the building. 

• 

Keep Reduce 

the the 

existing heat load 

induction in the 

motors building. 

and speed 

• increasing Keep the existing gearboxes. 

induction motors and speed 

• Produce increasing 

clean gearboxes. 

electrical power with low 

• harmonics. 

Produce clean electrical power with low 

harmonics. 

After reviewing alternatives, the company decided 

to After replace reviewing the alternatives, two existing the internal company combustion 

decided 

engines to replace with the two medium existing internal voltage combustion adjustable 

speed engines drives with and two motors medium to match voltage the adjustable pressure 

and speed flow drives needs and of the motors pipeline. 

to match the pressure 

and flow needs of the pipeline. 

Induction Motor and Gearbox 

(compressor Induction located Motor on the and other Gearbox side of wall). 

(compressor located on the other side of wall). 

The new system uses two Dura-Bilt5i MV drives connected to 

induction The new motors. system uses These two motors Dura-Bilt5i drive the MV compressors drives connected through 

to 

gear induction boxes. motors. To house These the motors drives, a drive completely the compressors preassembled, through airconditioned 

gear boxes. power To house the was drives, selected. 

a completely preassembled, airconditioned 

power house was selected. 

Benefits of the Dura-Bilt5i MV Compressor Drive System 

Benefits of the Dura-Bilt5i MV Compressor Drive System 

The system meets all of the customer’s requirements. In particular, 

The the system benefits meets all include: 

of the customer’s requirements. In particular, 

the system benefits include: 

Cost Savings. The savings, including reduced energy usage costs and reduced 

Cost maintenance, Savings. 

provides The a savings, short payback including on the reduced drive system energy investment. usage costs On and a system reduced 

like 

maintenance, this, the payback provides can be a three short years payback or less. on the drive system investment. On a system like 

this, the payback can be three years or less. 

Better Flow Control. The compressor operating point can be changed quickly in 

Better response Flow to changing Control. 

pipeline The compressor conditions resulting operating improved point can flow be control changed and quickly reduced in 

response energy waste. to changing pipeline conditions resulting in improved flow control and reduced 

energy waste. 

Fast Installation. System installation was fast using the pre-assembled power house, 

Fast and startup Installation. was fast System because installation the equipment was in fast the using power the house pre-assembled was pre-tested. power house, 

and startup was fast because the equipment in the power house was pre-tested. 

Page 10 of 32 


Preliminary 

Preliminary 

Revised: 5-22-09

Drive System Technical Details 

Input Flow 

Induction Motor 

Compressor 1 

4.16 kV Bus 

Gear 

box 

Induction Motor 

Compressor 2 

Gear 

box 

Dura-Bilt5i 

MV Adjustable Speed 

Drives 5,000 hp each 

Output Flow 

Drives: 

Drive Inverters: 

• Two Dura-Bilt5i MV drives • Five-level neutral point clamped PWM inverter 

• 4.16 kV rating • 3,300 Volt IGBTs 

• 5,000 hp each • Heat pipe cooling 

Drive Rectifiers: 

Actual Motor Operating Conditions: 

• 24-pulse diode converter • 4,500 hp 

• Less than half the lowest IEEE 519 standard 

• 49 Hz supply from drive 

harmonic current distortion limit 

• 1,443 rpm output 

Modular Design of the Dura-Bilt5i MV 

Dura-Bilt5i MV Drive 

Diode Rectifier 

24-pulse source 

Built-in Transformer 

Three Roll Out Inverter Phase Leg 

Assemblies: 

• Medium voltage IGBTs 

• Heat pipe cooling 

• Oil-filled capacitors 

• Fiber optic link 


Page 11 of 32 

Preliminary

Application 4. High-Speed 4. High-Speed Motor Drives Motor Gas Drives Compressors Gas Compressors 

Conventional gas pipeline compressors are driven 

directly by gas turbines. However, the turbines have high 

operating and maintenance costs and generate nitrogen 

oxides (NOx) and CO 2 . This gas pipeline application 

uses the TMdrive-80 ASD coupled to a high-speed 

synchronous motor to drive the gas compressors. With 

motor speeds up to 8,200 rpm, no gearbox is required. 

The compressor stations on the gas pipeline use this 

TMEIC all-electric variable speed drive system as 

illustrated below. 

Pipeline Compressor Station 

VSD ASD M Compressor 

TMdrive-80 ASD 

Natural Gas 

Compressor Drive & Motor 

Natural Gas 

High-Speed, Two-pole, 

Synchronous Motor - 

5,200 rpm 

The TMdrive-80 high-speed GCT (Gate Commutated Turn-off Thyristor) inverter has the world’s largest capacity. The 

GCT can operate at elevated speeds and be applied to voltages of 3.3 kV. The TMdrive-80 configuration perfectly fits 

large gas compressor applications. 

Advantages of the High-Speed Drive System 

High reliability & Availability – The TMdrive-80 and synchronous motor have a much higher 

reliability than the gas turbine, based on field experience. In addition, repair time is shorter so 

system availability is excellent. 

Air & Noise Pollution Eliminated – Gas turbine exhaust NOx and CO 2 and noise are avoided 

completely, producing an environmentally friendly installation. 

Low Operating & Maintenance Costs– The TMdrive-80 and synchronous motor combination 

has a much higher energy efficiency than the gas turbine. In addition, maintenance and repair 

costs are significantly reduced. 

Application 5. LNG 5. LNG Plants Plants 

Electric drive systems power the compressors in 

liquid natural gas (LNG) plants. These 

compressors are very large in size and use 

synchronous motors running at 3,600 rpm. 

Liquefied Natural Gas Plant 

End flash 

Liquefaction 

-178 o C 

Natural 

LNG 

Gas -160 o C 

End flash 

The drive used is the TMdrive-XL85, which 

employs GCT inverters at 7.6 kV. This drive can 

be expanded by adding parallel channels to obtain 

power levels up to 90 MW. Refer to the section on 

Drives for more information on the TMdrive-XL85. 

D 

M 

Propane 

Compressor 

M D 

MR Compressors 

LNG Process 

Compressors 

50~100 MW 

Page 12 of 32 


Revised: 5-22-09

Project Engineering 

Project Engineering 

TMEIC GE’s Engineering Drive Team in Virginia 

TMEIC GE’s Engineering Drive Team in Virginia 

Experienced Drive Engineering Team 

Experienced The drive engineering Drive Engineering team is experienced Team in the oil and 

gas industry and gained its experience working in the 

The drive engineering team is experienced in the oil and 

plants with technicians and mechanical suppliers. This 

gas 

engineering 

industry 

background, 

and gained its 

coupled 

experience 

with 

working 

state-of-the-art 

in the 

plants 

technology, 

with technicians 

enables TMEIC 

and 

GE 

mechanical 

to consistently 

suppliers. 

meet 

This 


engineering background, coupled with state-of-the-art 

demanding requirements of the industry. 

technology, enables TMEIC GE to consistently meet the 

demanding 

Experienced 

requirements 

drive engineers 

of the industry. 

jointly define the MV 

equipment and control strategy with your engineers and 

Experienced 

the OEM. This 

drive 

is followed 

engineers 

by 

jointly 

detailed 

define 

design 


of 

MV 


equipment 

system, control 


logic, 

control 


strategy 

configuration 

with your 

of the 

engineers 

drives. 


the OEM. This is followed by detailed design of the 

system, Comprehensive control logic, Factory and configuration Test Minimizes of the Risk drives. 

Comprehensive We understand Factory that delay Test in Minimizes commissioning Risk is very 

expensive, so we take steps to hold our startup schedule: 

We understand that delay in commissioning is very 

expensive, so we take steps to hold our startup schedule: 

• Complete factory test including applying power to the 

bridges, exercising the control with process 

• Complete 

simulation, 

factory 

and checking 

test including 

test modes. 

applying power to the 

bridges, exercising the control with process 

• simulation, The local commissioning and checking test engineers modes. are part of the 

project team, allowing a seamless transition from the 

• The 

factory 

local 

to your 

commissioning 

plant. 

engineers are part of the 

project team, allowing a seamless transition from the 

• factory For complex to your applications, plant. factory control engineers 

organize the factory test and assist with the 

• For complex applications, factory control engineers 

commissioning. 

organize the factory test and assist with the 

Local commissioning. 

Commissioning Team Ensures Knowledgeable 

Ongoing Service 

Local Commissioning Team Ensures Knowledgeable 

Ongoing Our field Service service organization is broad and deep with 

extensive experience in the industry providing you with a 

Our 

strong 

field 

local 

service 

service 

organization 

presence 

is 

for 

broad 

startup 



deep 

ongoing 

with 

extensive experience in the industry providing you with a 

service work, both in North America and overseas. 

strong local service presence for startup and ongoing 

service work, both in North America and overseas. 

Preliminary 


Preliminary 

Page 13 of 32

We Engineer the Medium Voltage Power System 

TMEIC GE application engineers design the power system from the medium voltage switchgear to the adjustable speed drive 

and motor. The critical engineering process for a successful installation is illustrated in the chart (top of next page) and 

detailed in this Project Engineering section. Icons indicate where the various teams of engineers in the factory and field 

service are involved in the project. 

A typical MV power system is shown below. We size and select all the equipment for the optimal drive solution. 

Medium Voltage Power S 

ystem 

Transmission Voltages 

Distribution Voltages 

> 

Substation 

Transformer 

Breaker 

Instrumentation 

Drive Isolation 


MV s 

witchgea 

r is selected for the 

application c 

onsidering: 

- The type, such as vacuum or S 

F6 

- The size for the current and v 

oltage 

- The CTs, PTs, and protective r 

elays 

to operate the b 

reaker 

- The enclosure for outdoor or i 

ndoor 

- The environment such a 

s 

temperature and h 

umidity 

Instrumentation for e 

quipment 

metering, monitoring, p 

rotection 

and control is selected, i 

ncluding: 

- Amp transducer and a 

mmeter 

- Watt and Watt-hour t 

ransducers 

- Phase CTs and phase overcurrent r 

elay 

- Ground sensor CT and r 

elay 

- Power quality m 

onitor 

Drive isolation, input and output, 

transformers are selected for the 

application c 

onsidering: 

- The type, such as dry or liquid fi 

lled 

- Size for the kVA and v 

oltage 

- Cooling if r 

equired 

- The enclosure for outdoor or i 

ndoor 

- The environment such a 

s 

temperature and h 

umidity 

- Special drive r 

equirements 

Page 14 of 32 


Revised: 5-22-09

TMGE 

Technical TMGE 

Technical Proposal 

Specification Proposal 

Specification 


Detailed 


Hardware Detailed & 

Software Hardware Design & 

Software and Component Design 

and Procurement Component 

Procurement 



Factory 

Acceptance 

Factory 

Acceptance 

Test 

Test 



System System 

Commissioning 

System System 

Commissioning 

System 

Maintenance 

System 

Maintenance 

and Service 

and Service 

The Project Teams 

The Project Teams 

Customer Team 

Customer Field Team Team 

TMGE Field Factory Team Team 

TMGE Training Factory Team 

Training Team 

Drive Utilization Voltage 

Drive Utilization Voltage 

M 

M 

Load 

Load 



Reactor 

Reactor 

Heat Exchanger 

Heat Exchanger 

Motor 

Motor 

Control PLC 

Control PLC 

Selection of the best adjustable speed 

drive Selection for the of application the best adjustable based on: 

speed 

drive for the application based on: 

- Continuous and overload torque 

Continuous and power rand equirements overload torque 

- Type and power of load, requirements 

including constant 

Type or variable of load, torque including or regenerative 

constant 

- Drive or variable and motor torque voltage 

or regenerative 

- Drive Power and system motor compatibility 

voltage 

- Power Overall system efficiency compatibility 

of the ASD and 

motor Overall combination 

efficiency of the ASD and 

- motor Harmonic combination 

analysis 

- Harmonic analysis 

Selection of optional drive 

Selection associated of equipment optional dsuch rive as: 

associated equipment such as: 

- Reactor for use with an LCI 

- Reactor Heat exchangers for use with if required an LCI 

- Air Heat conditioned exchangers equipment if required 

house Air conditioned if requiredequipment 

- house Switchgear if required if motor is to be 

synchronized Switchgear if motor with the is line to be 

- synchronized PLC for logic control, with the for lineexample 

- synchronizing PLC for logic control, multiple for motors example with 

synchronizing the supply for soft multiple start motors capability with 

the supply for soft start capability 

Selection of the motor and associated 

Selection equipment of including: the motor and associated 

equipment including: 

- Induction or synchronous motor 

- Induction Motor size or including synchronous power, motor torque, 

voltage, Motor size current, including and power, speed torque, 

- voltage, Selection current, of the exciter and speed if a 

synchronous Selection of the motor exciter is used if a 

- synchronous Required motor motor protection is useddevices 

- Required Optional tachometer motor protection for special devices 

applications 

Optional tachometer for special 

- applications 

Torsional analysis 

- Torsional analysis 


Page 15 of 32


Technical Proposal Specification 

TMEIC GE Assists in the Project Planning 

TMEIC GE 

Inputs 

Articles, Newsletters, Web Site, 

MV School, Brochures 

Guideform Spec, ROI Analysis, 

Budgetary Alternatives 

Bid Package 

Preparation 

Customer 

Project Potential Value RFQ Bid Bid 

Definition Solutions Analysis Spec Package Evaluation 

13 KV 

4160 V 

Starting 

LCI 

LCI 

Isolation 

Contactor 

IC1 

M1 

Starting 

Contactors 

ST1 

Motors, 

Fixed or 

Variable 

Speed 

MTR1 

Motor 

Exciters 

Excitation 

M2 

ST2 

MTR2 

Excitation 

M3 

ST3 

MTR3 

Excitation 

Run Breakers 

System architecture illustration 

Detailed description of equipment in proposal 

During all phases of your project 

planning, TMEIC GE is willing to assist 

by supplying information, training, 

guide-form specifications, and general 

advice. Experienced MV drive 

application engineers prepare a 

technical proposal that includes: 

• Customized system architecture for 

your project. 

• Detailed equipment specifications 

for the drives, exciters, transformers, 

switchgear, and housings. 

• Thorough description of the PLC 

control functions, including logic for 

synchronizing and de-synchronizing 

the motors. 

• Formal bid documentation. 

Page 16 of 32 


Revised: 5-22-09


Detailed Hardware/Software Design & Procurement 

Electrical and 

mechanical prints 

Control logic and 

drive configuration 

HMI screen design 

Based on the proposal specification, the project engineering team proceeds with four main tasks: 

• Control Software Design. Control engineers configure the drives and PLC controller logic, if a PLC is required for 

the application. The illustration above shows a typical toolbox logic function diagram in Relay Ladder Diagram format. 

The toolbox is used for drive configuration, tuning, sequencing, and drive diagnostics. 

• Optional HMI Screen Design. Interface screens for maintenance and drive control are configured using the touch 

panel engineering tools. These screens provide real-time drive data and operator interaction. 

• Hardware Design. All equipment is specified per the project requirements, and a complete set of elementary 

diagrams, layout, and outline drawings is created. 

• Component Procurement. We work with our parent companies to source the most cost effective system 

components for your application. 


Page 17 of 32


System Test 

Understanding the importance of a 

thorough system test, the TMEIC 

GE engineering team conducts a 

comprehensive factory test before 

shipment. These tests consist of: 

• Complete staging of the 

system with the drive, 

controller, I/O, and 

communication networks. 

• 460 V gate test of all power 

semiconductors. 

• Test of the bridges at high 

current connected to an 

external load. 

• Validation of current and 

voltage feedbacks. 

• Validation of all I/O interfaces, 

and the touch panel. 

• Validation of the drive test 

modes. 

• Test of the cooling system. 

Typical LCI drive test setup in the factory 

LCI Control Validation in the Engineering Lab 

Toolbox software for Drive 

and Logic Configuration 

LCI STATUS 

Touch Panel 

Display & Control 

Drive Control 

Logic Control 

Firing Boards 

Exciter Control 

LCI Controller 

Simulation Software 

Drive Simulator 

M 

Load 

Optional PLC with 

Logic and Simulation of 

multiple Bypass 

Contactors 

Logic for Soft Start and 

Synchronization of Multiple 

Motors for example 

Diagram of LCI Drive Test Setup 

Digital Motor 

Simulator 

Digital Load 

Simulator 

Validation of the optional 

LAN-DCS link and PLC 

sequencing and logic is done 

in the engineering lab using a 

simulated drive, motor, and 

load. Using the computer 

simulated equipment, the 

PLC is run through its 

sequencing and the resulting 

outputs validated. 

Note that logic for 

synchronizing a single motor 

can be included in the LCI 

controller so a PLC is not 

required. 

Page 18 of 32 


Revised: 5-22-09


System Commissioning 

In the commissioning phase of the project, your TMEIC 

GE team may include the local field engineers and factory 

service engineers, all supported by the engineers who 

designed and tested the system. This overlap of teams 

between the factory and the plant ensures a smooth and 

on-schedule startup. 

The local service engineer takes responsibility for the 

machine startup and commissioning and is available later if 

any service is required at the plant. 

Drive Training at the Factory or in Your Plant 

We can offer a course tailored to your project and 

held at your location. 

Complete and Detailed Drive System Documentation 

Along with the hardware and software, TMEIC GE 

delivers complete system documentation: 

• An electronic instruction book with all the prints 

on CD with a hyperlink index 

• Recommended wiring and grounding 

procedures 

• Renewal parts list 

• Standard third-party vendor documentation 

At the end of the project, the drawings are updated 

to reflect the final changes. 

Customer engineers, service, and operations personnel 

are trained on the drives and control system at the GE 

Training Center in Salem, Virginia. This world-class facility 

has 8 large classrooms, 5 fully equipped training labs, and 

offers 61 different product courses to customers. 

Classroom and hands-on training consists of 50% class 

time and 50% hands-on lab time. Topics include: 

• Overview of the drive system 

• Function of the main assemblies 

• Technical details of the components 

• Drive and control system programming using the 

Control System Toolbox 

• System diagnostics and service 


Page 19 of 32

System Maintenance & Service 

The Fastest Service Response in the Industry * 

Comprehensive technical service is provided by our large service organization with offices geographically distributed to 

provide a service presence near your plant. Service in North America, Europe, and Asia is discussed at the bottom of the 

page. (* fastest response based on a recent survey). 

NORTH 

AMERICA 

Amsterdam, Holland 

European Spare 

Parts Depot 

London 

Frankfurt 

E U R O P E 

Warsaw 

A S I A 

P A C I F I C 

O C E A N 

Houston, TX 

Pittsburgh, PA 

Roanoke, VA 

Head Office 

A T L A N T I C 

O C E A N 

Bari 

Kuwait 

Beijing 

Hong Kong 

P A C I F I C 

O C E A N 

TOKYO 

Shanghai, China 

TMEIC Asian Spare Parts Depot 

SOUTH 

AMERICA 

AFRICA 

Hyderabad 

Kuala Lumpur 

Singapore 

I N D I A N 

O C E A N 

Jakarta 

Rio de Janeiro 

Sao Paulo 

Buenos Aires 

Johannesburg 

AUSTRALIA 

Sydney 

Atlanta, GA 

North America 

Spare Parts Depot 

Amsterdam, Holland 

European Spare 

Parts Depot 

London 

Warsaw 

Frankfurt 

Tokyo, Japan 

TMEIC Head Office & Factory 

Bari 

Wherever You Are, We Are Close By 

In North America: 

In Europe: 

In Asia: 

The TMEIC GE Service and Parts organizations service all drive system customers out of their 

field offices in North America. They are supported by remote diagnostic service provided by the 

GE OnSite Support organization, the TMEIC GE factory service personnel, and the TMEIC 

(Toshiba Mitsubishi-Electric Industrial Systems Corporation) North America Spare Parts Depot in 

Atlanta, Georgia. 

TMEIC GE services all systems in Europe supported by the TMEIC GE international offices in the 

UK, Germany, and Poland; the TMEIC Spare Parts Depot in Amsterdam, Holland; the GE OnSite 

Support service in the USA; and the TMEIC GE factory service personnel in Salem, Virginia. 

TMEIC GE services drive systems throughout Asia and the Pacific supported by the TMEIC factory 

in Japan, and multiple Field Engineers distributed throughout Southeast Asia. The GE OnSite 

Support service is also available to customers as an option. 

Page 20 of 32 


Revised: 5-22-09

The World’s Largest Fleet of Installed MV Drives 

Load Commutated Inverter LCI 

Dura-Bilt5i MV 

TMdrive-70 

Power Rating of 

MV Drive Family 

TMdrive-80 

TMdrive-XL85 

TMdrive-70 

LCI 

Dura-Bilt5i 

200 300 400 1,000 2,000 

268 402 536 

1,340 2,682 

4,000 

5,364 

10,000 

13,400 

20,000 

26,800 

50,000 

67,000 

90,000 

120,000 

kW 

Hp 

TMEIC GE’s Family of Medium Voltage AC System Drives 

Largest Installed Base. Since the LCI was introduced in 1979, over 2 million hp of drives have been installed and are in 

service. More recently a large number of Innovation Type G, H, and SP drives have been installed, as well as the new 

technology Tosvert, Dura-Bilt, and TMdrives. This represents the largest installed base of MV drives of any manufacturer. 

Significant Investment in MV Technology. TMEIC GE’s Tosvert, Dura-Bilt, and TMdrive products represent a large 

investment in MV drive technology, including development of semiconductor devices such as the IEGT and GCT. 

The Highest Reliability. GE and TMEIC GE drives provide the highest reliability based on field experience and customer 

satisfaction survey results in North America. 

The Control System Toolbox. The Windows-based toolbox software is the universal tool across all drives providing 

configuration, tuning, sequencing, and drive diagnostics for the entire family. 

Large Spare Parts Stock. GE’s spare parts organization and TMEIC GE’s parts depots both stock the line of MV drive parts 

and provide rapid delivery to your plant anywhere in the world. 


Page 21 of 32

Load Commutated Inverter (LCI) System Drive Overview 

4,160 AC 

2,300 AC 

Volts 

2,000 

2,682 

10000 

13,400 

LCI 

LCI 

50,000 

67,000 

kW 

Hp 

The TMEIC GE LCI drive is ideal for any high power 

synchronous motor application requiring adjustable 

speed operation or soft starting. With an optional output 

transformer, the LCI can operate with any motor voltage. 

Motor field excitation is included as well as a 

synchronizing and de-synchronizing function to smoothly 

start large motors. 

Power Converter Blocks: 

2,300 Volt, 6-pulse source – 5,224 kW, 7,000 hp 




LCI power converter blocks can be paralleled to deliver 

ratings in excess of 70,000 hp. Multi-channel (block) 

operation gives the opportunity for dual and triple 

channel redundancy for very high reliability applications. 

Features 

Unique Bridge Design 

Each bridge uses full voltage rated SCRs 

(thyristors) in an N+1 configuration. 

Highest System Efficiency 

The synchronous motor and LCI combination is one 

of the highest efficiency drive system available. 

Benefits 

Maximize Reliability and Up-Time 

N+1 redundancy insures full power output even in 

the event of an SCR device failure. 

Most Cost Effective High HP Systems 

High efficiency means reduced energy 

consumption and lower costs over the project life. 

Input Configuration 

The drive can be configured for 6-, 12-, or 24-pulse 

input. 

Water Cooled Technology 

Fully redundant cooling system; hoses don’t need 

to be disconnected for bridge service. 

Windows-Based Configuration and 

Maintenance Tools 

For PC-based configuration, the toolbox features 

animated block diagrams and a trend window. 

Built-In Line Regeneration 

Energy in the load can feed back into the source 

converter and out to the MV supply. 

Power System Friendly 

Flexible input configuration choice allows cost 

effective installations for low harmonic distortion. 

Compact, Quiet Design 

Reduces and simplifies maintenance, reduces 

ambient noise, and saves valuable floor space. 

Faster Commissioning & Maintenance 

These world-class tools improve productivity in 

commissioning and maintenance, and can be used 

on all TMEIC GE drive products. 

Large Energy Savings 

Load energy, which would otherwise be turned into 

heat, is recovered, resulting in reduced utility bills. 

Page 22 of 32 


Revised: 5-22-09

LCI Control Features: 

• Load commutation above 10% base speed 

• Sensorless speed control 

• Speed control range: 10-150% of base speed 

with logic to prevent reverse operation 

• Built-in regeneration for smooth control of 

loads 

Cabinet Lineup: 

Length - 158 in (4,000 mm) for 7,000 hp 

version. 

- 220 in (5,600 mm) for 18,000 hp 

version. 

Height - 100 in (2,500 mm) for all cabinets. 

Depth - 55 in (1,400 mm) for all cabinets. 

Cooling System 

In the closed loop cooling system, coolant 

circulates from the pump discharge, to the heat 

exchanger, to the power conversion bridges, and 

back to the pump. Pumps can be switched over 

and changed without interrupting cooling. 

1 

N 

AC 

Voltage 

Input 

N +1 SCR 

redundancy 

Color Touch 

Screen 

Source Bridge 

DC Link 

Reactor 

Main 

Control 

Module 

VersaMax 

I/O Modules 

Load Bridge 

AC 

Voltage 

Output 

Optional 

Transf ormer 

Sy nchronous 

Motor 

Excitation 

Voltage 

Controller 

Optional Tach Signal 

LCI Source and Load Bridge Configuration 

SCR water 

cooling hoses 

Source bridge 

with series SCR 

cells and heat 

sinks 

Cell replacement without 

opening water cooling loop 


Page 23 of 32

Dura-Bilt5i Medium Voltage PWM Drive 

4,160 

3,300 

2,300 

Volts 

200 400 

268 536 

1,000 

1,340 

4,000 

5,364 

kW 

Hp 

Dura-Bilt5i delivers simple operation in a robust and 

compact design, providing a cost effective solution for a 

broad range of medium voltage applications. 

Backed by its five-year warranty, the Dura-Bilt5i MV delivers 

value through low cost of ownership and high reliability. 

Power levels available include: 

• 2000 Series – 2,300 Volts Out, 300 to 3,000 hp 



Rugged design features for high reliability include: 

• Inverter heat pipe cooling. 

• Diode rectifier converter with 24-pulse circuit for low 

input current distortion. 

• Neutral point clamped pulse width modulated inverter 

using medium voltage IGBTs. 

Cabinet Size: 1,000 hp drive is 74 inch (1,880 mm) long 

5,500 hp drive is 222 inch (5,639 mm) long 

Cabinet height is 104 inch (2,634 mm) long 

Features 

Medium Voltage IGBTs 

Each inverter uses 3,300 Volt Insulated Gate 

Bipolar Transistors (IGBTs). 

Benefits 

Rock Solid Reliability 

High power IGBTs allow a simpler, more reliable 

inverter design with fewer power switches. 

24-Pulse Converter 

Each phase leg of the converter includes a 24- 

pulse diode rectifier. 

Heat Pipe Cooling Technology 

Each of the three inverter legs use heat pipe 

cooling for the IGBTs. 

Power System Friendly 

This design exceeds the IEEE 519-1992 

specification for Total Harmonic Distortion (THD) 

without requiring filters. 

Compact Quiet Design 

The heat pipe cooling reduces fan noise and saves 

valuable floor space in your plant. 

Windows-Based Configuration and 

Maintenance Tools 

For PC-based configuration, the Control System 

Toolbox features: 

• Animated block diagrams 

• Drive tune up wizards 

• Integrated trend window 

Faster Commissioning and Maintenance 

These world-class tools improve productivity in 

commissioning and maintenance and can be used 

on all TMEIC GE drive products. 

Page 24 of 32 


Revised: 5-22-09

Dura-Bilt5i MV Power Bridge Technology Driving the Five-Year Warranty 

Typical inverter voltage & 

currrent waveforms for 5/9 level 

pulse width modulated output. 

Current 

1 of 3 phases shown in detail 

C (W) 

C (W) 

Copper-wound transformer 

with electrostatic shield 

B (V) 

A (U) 

Transformer/Source 

compartment 

24-pulse source 

B (V) 

A (U) 

Inverter compartment 

phase-leg assemblies 

Main power 

14.4 kV or below, 

50-60 Hz 

Integral 

pre-charge 

circuit 

Incoming power 

compartment 

Medium voltage IGBTs 

Induction 

motor 

3 

M 

E 

Standard 

integral lightning 

arrestor 

Integral 

disconnect 

option 

Sensing & 

control power 

potential 

transformers, 

120 V output 

Standard 

E.S. Shield 

Voltage 

detection 

module 

Optical 

link 

module 

Current 

feedback 

Output 

disconnect 

option 


bypass 

option 

Auxiliary & control power 

480 V ac standard, 

others available 

3 

Power 

Supplies 

Phase detection 

module 

+5 V dc 

+/-15 V dc 

+24 V dc 

0 V dc 

Controller 

Redundant 

fans option 

Gate signal 

distributor 

LAN interface 

External I/O 

Heat pipe cooling 

assembly 

Additional Features 

• Operator keypad provides real time drive data • Fuse protection on source diodes with blown fuse 

• Integral copper wound transformer rated for 115°C 

indication 

rise with electrostatic shield • Operation at 0° to +40°C; up to +50°C with derating 

• Incoming power protected by lightning arrestors • Speed regulation ±0.01% with speed sensor; ±0.5% 

• Roll out inverter phase leg assemblies 

without 

• DC bus capacitors, oil filled for long life 

• Field oriented vector control torque accuracy ±3% with 

• Closed transfer synchronizing control 

temp sensor 

• Induction or synchronous motor 

• 3% or less motor current harmonic distortion 


Page 25 of 32

TMdrive-70 and TMdrive-80 Medium Voltage Drives 

3.3 kV 

3.3 kV 

2,000 

2,682 

4,000 

5,364 

10,000 

13,400 

TM-80 

TM-70 

50,000 kW 

67,000 Hp 

The TMdrive-70 – Designed for high-power applications 

Frame 8000 – 3,300 Volts out, motor power 10,000 hp 



Rugged design features for high reliability: 

• Water cooled power bridge 

• Converter and inverter using medium voltage Injection 

Enhanced Gate Transistor (IEGT) power semiconductors with 

high-speed switching 

• Pulse Width Modulation using fixed pulse pattern control to 

reduce switching losses 

• Neutral point clamp diodes 

• Regenerative IEGT converter available 

TMdrive-70 cabinet sizes: 

Frame 8000 cabinet is 126 inch (3,200 mm) long, 94 inch high. 



plus a second cabinet, which is 189 inch (4,800mm) long. 

Features 

IEGT-based Converter and Inverter, TM-70 

Both the converter and inverter use state-of-theart 

technology and design based on the Injection 

Enhanced Gate Transistor (IEGT). 

GCT-based Converter and Inverter, TM-80 

Both the converter and inverter use state-of-theart 

technology and design based on the Gate 

Commutated Turn-off thyristor (GCT). 

Water Cooled Power Bridge 

Draw-out phase leg assemblies are water-cooled 

and have quick disconnect fittings. 

Modular Design 

Power bridge assemblies come in convenient 

draw-out modules. 

High-Speed Switching 

The IEGT is switched at a rate of 500 Hz in the 

TM-70, and the power bridge is a three-level 

design. 

Benefits 

Drive Provides Near Unity Power Factor to the Load 

The IEGT phase leg assemblies provide power at near 

unity power factor with minimum harmonic distortion 

and lower switching losses. 

Drive Capable of Higher Capacity 

The GCT phase leg assemblies provide high power at 

near unity power factor with minimum harmonic 

distortion. 

Equipment Footprint Reduced 

Efficient water-cooling allows reduced drive footprint, 

saving valuable space in your facility. 

Maintenance Minimized 

Modular power bridge assemblies and quick 

disconnects minimize the time for any maintenance 

activities. 

Motor and Power System Friendly 

The high-speed switching coupled with the bridge 

design delivers a smooth sine wave to the motor and 

power system. 

Page 26 of 32 


Revised: 5-22-09

Flexible Topologies to Meet Your Needs 

The TMdrive-70 8000/10000 Frame IEGT regenerative Converter and Inverter are shown below. A non-regenerative diode 

converter is also available. Converter and inverter banks can be paralleled to obtain high powers for driving large induction 

or synchronous motors. 

Three-Level Phase Leg Assembly for both Converter and Inverter – TM-70 

TM-70 Phase Leg Assembly 

TM-70 10 MVA Converter 

TM-80 14 MVA Converter 

10 MVA Inverter 

14 MVA Inverter 

Additional Features – TM-70: 

• Control cards common to the TMEIC GE drive family. 

• Common Microsoft Windows-based configuration 

toolbox software with local or remote connectivity. 

• High drive efficiency of 98.5% at rated load. 

• Oil-filled DC capacitors to provide long life. 

• Field exciter available for synchronous motors. 

• Operation at 0° to +40°C; up to +50°C with derating. 

• Vector control speed regulation ±0.01% with speed 

sensor; ±0.1% without. 

• Vector control torque linearity ±3% with temp sensor, 

for induction motor. 

• Very low motor current harmonic distortion. 


Page 27 of 32

TMdrive-XL85, the 7.2 kV Drive for High Power Applications 

TMdrive-XL85, the 7.2 kV Drive for High Power Applications 

Volts 

Volts 

7,600 

7,600 

2,000 

2,682 2,000 

2,682 

4,000 10,000 

50,000 90,000 kW 

4,000 5,364 13,400 10,000 

50,000 67,000 120,000 90,000 kW Hp 

5,364 13,400 

67,000 120,000 Hp 

The TMdrive-XL85 is a medium voltage, ac fed 

The drive TMdrive-XL85 designed for is high-efficiency medium voltage, and powerfriendly 

designed operation for in high-efficiency a broad range and of industrial power- 

ac fed 

drive 

friendly applications. operation in broad range of industrial 

applications. 

High reliability, low harmonic distortion, 

High and high reliability, power low factor harmonic operation distortion, are 

and designed high into power the drive. factor operation are 

designed into the drive. 

The TMdrive-XL85 is available with up to 7.2 kV 

The class TMdrive-XL85 voltage output. is available with up to 7.2 kV 

class voltage output. 

Features 

Benefits 

Features 

Benefits 

• Conservative design using 6000 V - 6 000 A • Highly reliable operation, expected 20 year drive 

Conservative GCTs design using 6000 000 Highly MTBF reliable operation, expected 20 year drive 

GCTs 

MTBF 

• High energy efficiency approximately 98.6% • Considerable energy savings 

High energy efficiency approximately 98.6% Considerable energy savings 

Please add 

icons Please add 

icons 

Please 

add Please icons 

add icons 

Please add 

icons Please add 

icons 

• Diode rectifier ensures power factor greater 

Diode than 95% rectifier in the ensures speed control power range factor greater 

than 95% in the speed control range 

• 36-pulse converter rectifier by using separated 

36-pulse phase shifted converter transformer rectifier by using separated 

phase shifted transformer 

• Multiple level drive output waveform to the 

Multiple motor (five level levels drive for the output 7.2 kV waveform inverter) to the 

motor (five levels for the 7.2 kV inverter) 

• Synchronous transfer to line option with no 

Synchronous interruption to motor transfer current to line option with no 

interruption to motor current 

• Separated input isolation transformer included in 

Separated drive package input isolation transformer included in 

drive package 

• Capacitors not required for power factor 

Capacitors correction not required for power factor 

correction 

• No harmonic filter required to provide lower 

No harmonic harmonic distortion filter levels required than to IEEE-519-1992 

provide lower 

harmonic guidelines distortion levels than IEEE-519-1992 

guidelines 

• Suitable for standard motors due to motor 

Suitable friendly waveform 

standard motors due to motor 

friendly waveform 

• Allows control of multiple motors with one drive 

Allows control of multiple motors with one drive 

• No motor current or torque transients when the 

No motor motor transitions current to or the torque AC line transients when the 

motor transitions to the AC line 

• Less power loss in Drive Room 

Less power loss in Drive Room 

• Less total space required 

Less total space required 

• Simplifies design and installation 

Simplifies design and installation 

Page 28 of 32 


Revised: 5-22-09

TMdrive-XL85 Adjustable Speed Drive 

Converter: 

• Low harmonic distortion 

• Input from six windings 

• 36-pulse diode converter 

Converter 

(Source) 

Compartment 

1 of 3 phases shown in detail 

C (W) 

B (V) 

A (U) 

C (W) 

B (V) 

A (U) 

Inverter Compartment 

Phase-Leg 

Assemblies 

Inverter: 

• Low harmonic distortion 

• Five-level GCT circuit 

Synchronous motor for 

high power levels. 

Voltage 7.6 kV 

M 


Redundant TMdrive-XL85 Configuration 

A redundant configuration of the TMdrive-XL85 can be 

built using four active channels (blocks) connected as 

shown in the diagram. The system has: 

• Four transformers and four TMdrive-XL85 

channels. 

• Four parallel connections. 

• A very clean waveform. 

• Contacts to isolate any one channel. 

The redundant function is as follows: 

1. A problem is detected in one channel. 

2. The suspect channel is isolated and stopped. 

3. The three other channels continue operation and 

deliver full power to the motor. 

4. The out-of-service channel is repaired and 

brought back on line. 

Transformers 

T C I 

T C I 

T C I 

T C I 

TMdrive-85 

Drives 

Simplified Block Diagram of Redundant ASD 

SM 

Synchronous 

Motor 


Page 29 of 32

Appendix. Energy Savings Payback Calculations 

Replacing a mechanical speed control device with an adjustable speed drive usually produces large energy savings plus a 

reduction in maintenance costs. This appendix outlines how the energy savings can be calculated as follows: 

1. Calculate the cost of energy used by the electric drive speed control system, outlined on this page. 

2. Calculate the cost of energy used by the mechanical speed control system, outlined on the next page. 

The difference is the energy cost savings. Typical power consumption curves for pumps and fans are shown below. 

Power (pu) 

1.0 

0.8 

0.6 

0.4 

0.2 

0 

o 

Pump with 

throttling valve 

Energy 

savings 

o 

o 

o 

o 

20% 40% 60% 80% 100% 

RPM/Flow (pu) 

o 

Electrical 

ASD 

Example: Pump power savings using electric drive (ASD) 

Power (pu) 

1.0 

0.8 

0.6 

0.4 

0.2 

0 

Fan with 

damper 


savings 

Fan with inlet 

guide vanes 

0% 20% 40% 60% 80% 100% 

RPM / Flow (pu) 

Electrical 

ASD 

Example: Fan power savings using electric drive (ASD) 

Below is an example of the energy cost calculation for a pump driven by a motor and electric drive. The calculation for the 

mechanical system is similar and is described on the next page. Since energy consumption varies with speed and flow, you 

need the load profile table which shows the number of hours running at the various flows. Refer to the example below. 

Energy Cost for Electric Drive Speed Control 

Step 9 

Step 8 

Step 6 

Energy Cost 

Input kW 

$0.07/kWh 

1,212 



Cost 

Efficiency 

$371,500/yr 

96.5% 

Calculation 

details 

Step 10 

Three-Phase 

Electric Supply 

Step 7 

Electric 

Adjustable 

Speed 


Motor 

Step 4 

Motor 

Input kW 

Shaft kW 

1,169 

Motor 

1,119 

Input 

Efficiency 

Shaft hp 

95.7% 

1,500 

Step 5 

Step 3 


Shaft 

Variable speed motor 

Pump 

Chart & Load 

Curve 

Step 2 

Variable speed pump 

Step1 

Desired 

Flow 

90% 

Start 

here 

Output Flow 

and Pressure 

Step 1 

Step 2 

Step 3 

Select the desired pump 

output flow, for example 

90%, and number of 

hours/day at this flow, 

for example 12. 

Obtain the variable 

speed pump 

performance chart and 

the load pressure-flow 

curve, which is the flow 

resistance of the 

process being fed. 

Find the pump input 

power. 

Percent Pressure (or Head) 

100 

Pump Performance Chart & Load Curve 

Load Curve 

(Process) 

Pump Chart 

Speed N2 

1,800 rpm 

80 

B 

1,500 hp 

A 

90 100 

Percent Output Flow 

Pump hp 

2,000 

Overlay the load pressure-flow curve on the pump 

chart and find the pump input shaft horsepower at 

the 90% flow (point B). You need the load profile. 

See example below. 

Pump input power at N2 rpm = 1,500 hp 

at point B, 90% flow. 

Daily Load Profile (example) 

Operation 

Hours/day 

Percent 

Flow 

5 

100% 

12 

90% 

5 

80% 

1 

70% 

1 

60% 

Step 4 

Convert the input shaft 

horsepower to shaft kW 

Conversion: Horsepower x 0.746 = kW 

Input shaft kW = 1,500 hp x 0.746 = 1,119 kW 

Step 5 

Step 6 

Obtain the electric 

motor efficiency 

Example: Induction motor efficiency 95.7% from 

manufacturer's data sheets (find at each RPM) 

Motor input power = 1,119 kW/0.957 Efficiency 

= 1,169 kW 

Step 7 

Step 8 

Obtain the adjustable 

speed drive efficiency 

Example: Drive efficiency 96.5% from manufacturer's 

data sheets (find at each RPM) 

Drive input power = 1,169 kW/0.965 Efficiency 

= 1,212 kW 

Step 9 

Step 10 

Obtain the electric 

power cost 

Example: Energy cost = $0.07/kWh. Calculate cost for 

the hours at this flow from load profile; in this example it 

is 12 hours/day. 

Energy cost = 1,212 kW x 0.07$kWh x 12 hrs/day 

x 365 days per year = $371,500 per year. (Repeat 

calculation for other flows in load profile and total). 

Page 30 of 32 


Revised: 5-22-09

Three- 

Phase Electric 


Supply 

Calculations for Mechanical Speed Control Systems 

Calculations for Mechanical Speed Control Systems 

If the energy cost is to be compared with a mechanical variable speed system, the previous calculation must be repeated. 

There If the energy are three cost main is to mechanical be compared flow with control mechanical systems as variable described speed in system, the large the table previous of pages calculation 4 and 5: must be repeated. 

There 

• 

are 

A fixed 

three 

speed 

main mechanical 

motor and pump, 

flow control 

compressor, 

systems 

or 

as 

fan 

described 

with a flow 

in the 

throttling 

large table 

valve 

of 

or 

pages 

variable and 

guide 

5: 

vanes. 

• A fixed 

fixed 

speed 

speed 

motor 

motor 



hydraulic 

pump, compressor, 

variable speed 

or fan 

transmission 

with flow throttling 

driving a 

valve 

variable 

or variable 

speed pump 

guide 

or 

vanes. 

compressor. 

• A variable 

fixed speed 

speed 

motor 

steam 


or 

hydraulic 

gas turbine 

variable 

driving 

speed 

a variable 

transmission 

speed pump 

driving 

or compressor. 

variable speed pump or compressor. 

The methods variable for calculating speed steam these or costs gas turbine are outlined driving in the variable chart speed below. pump A load or profile compressor. similar to the previous page is 

used. The methods Spreadsheets for calculating for calculating these costs the savings are outlined and payback in the chart for below. a fan are available load profile from similar the Web to the site previous www.tmge.com page is . 

used. Spreadsheets for calculating the savings and payback for fan are available from the Web site www.tmge.com Fig. 1 Pump Performance Chart & Load Curve To calculate the energy used by a flow 

Flow Throttling Valve Control 

Fig. 1 Pump Performance Chart & Load Curve To throttling calculate system, the energy start with used the by desired a flow 

Flow Throttling Valve Control 

throttling output flow, system, say 90%. start Obtain with the the desired pump 

Pump hp 

output performance flow, say chart 90%. (head Obtain vs flow, the pump with pump 

Pump 1,900 hp 

performance horsepower). chart Find the (head horsepower vs flow, with required pump 

1,900 

C A 

horsepower). when the pump Find is running the horsepower at the fixed required 


100 

C A 

when the pump is running at the fixed 


100 

motor speed of 1,800 rpm and delivering 

Threemotor 

speed of 1,800 rpm and delivering 

Three- Phase 

Valve or 

the reduced flow at C in Figure 1. Proceed 

Phase Electric 

Valve Damper or 

the as in reduced the electrical flow at example, C in Figure working 1. Proceed back 


Damper Control 

Valve as to the in the motor. electrical Calculate example, the shaft working kW used back 

Supply 

Control 

Valve 

Fixed speed Fixed speed 

Open to and the the motor. electrical Calculate power the cost. shaft kW used 

Fixed speed Fixed speed 

Open and References the electrical below power give examples. cost. 

References below give examples. 

80 90 100 

Repeat for the other flows in the load 

80 Percent Output 90 Flow 100 

Repeat profile, and for the total other energy flows in usage. the load 


profile, and total the energy usage. 

Hydraulic Variable Speed Control 

Hydraulic Variable Speed Control 

Speed 


Three- 

Speed 


N2 

Hydraulic 

Phase 

N2 

Efficiency % % 

100 

100 

90 

90 

80 

80 

Fixed speed 

Fixed speed 

Var. Hydraulic Speed 

Var. Control Speed 

Control 

70 

70 60 70 * 

* 

60 70 

Output 80 80 Speed 90 90 

% 

100 

100 

Output Speed % 

Variable Speed Turbine Control 

Variable Speed Turbine Control 

Steam, 

Steam, Gas, or 

Gas, Kerosene or Fuel or 

Kerosene Fuel Steamor 

Control Steam 

Control 

Electric Drive 

Electric Drive 

Hydraulic Transmission 


Hydraulic Coupling 

Hydraulic Coupling 


Variable turbine speed 

turbine 

Speed 

Speed N2 

N2 



Figure 2. 

Figure Hydraulic 2. 


Transmission 

Efficiency 

Efficiency 



Percent Pressure (Head) 

Pump Curve 

Pump Curve 

1,800 rpm 

1,800 rpm 

Fig. 3 Pump Performance Chart & Load Curve 

Fig. 3 Pump Performance Chart & Load Load Curve 

Load Curve 

Curve (Process) 

A (Process) 

100 

A 

100 


Fig. 4 Pump Performance Chart & Load Curve 

Fig. 4 Pump Performance Chart & Load Load Curve 

Load Curve 

Curve (Process) 

A (Process) 

100 

A 

100 


Pump Curve 

Pump Curve 

1,800 rpm 

1,800 rpm 

Speed N2 

Speed N2 

80 90 100 

80Percent Output 90 Flow 100 


Pump Curve 

Pump Curve 

1,800 rpm 

1,800 rpm 

Speed N2 

Speed N2 

B 

B1,500 hp 

1,500 hp 

B 

B1,500 hp 

1,500 hp 

80 90 100 

80Percent Output 90 Flow 100 


To calculate the energy used by a variable 

To speed calculate hydraulic the transmission energy used by system, a variable start 

speed with the hydraulic desired pump transmission output flow. system, Using start 

with the pump the desired chart, find pump the output horsepower flow. Using 

the required pump when chart, the find pump the horsepower is running at the 

required reduced speed when the N2 pump and delivering is running the at the 

reduced speed flow at N2 B in and Figure delivering 3. Obtain the the 

reduced transmissiom flow at efficiency B in Figure from 3. the Obtain the 

transmissiom manufacturer (Figure efficiency 2). from Note the the low 

manufacturer efficiency at reduced (Figure speeds. 2). Note Proceed the low as 

efficiency in the electrical at reduced example, speeds. working Proceed back as to 

in the the motor electrical and calculating example, working the energy back cost. to 

the Reference motor and 1 gives calculating examples. the energy cost. 

Reference 1 gives examples. 

Repeat for the other flows in the profile 

Repeat and total for the the energy other usage. flows in the profile 

and total the energy usage. 

To calculate the energy used by a 

To variable calculate speed the turbine energy system, used by take a the 

variable pump chart speed and turbine load curve. system, Find take the the 

pump horsepower chart and required load when curve. the Find pump the is 

horsepower running at the required reduced when speed the N2 pump andis 

running delivering at the reduced flow speed at B N2 inand 

delivering Figure 4. Find the reduced the turbine flow fuel at B or insteam 

Figure consumption 4. Find at the this turbine speed fuel andor steam 

consumption horsepower, and at this calculate speed the andcost for the 

horsepower, number of running and calculate hours. the cost for the 

number of running hours. 

Repeat for the other flows in the profile 

Repeat and total for the the energy other usage. flows in the profile 

and total the energy usage. 

A number of free publications on this topic are available from the library at www.tmge.com , including the following: 

number of free publications on this topic are available from the library at www.tmge.com , including the following: 

1. Selecting Variable Speed Drives for Flow Control, brochure GEA-13873 - discusses the various mechanical speed 

1. control Selecting systems Variable and Speed outlines Drives the calculation for Flow Control, of energy brochure savings, GEA-13873 in particular discusses for hydraulic the various transmission mechanical speed speed control. 

2. control Adjustable systems Frequency and outlines Drives the for Pump calculation Energy of energy Savings savings, Power in Generating particular for Stations hydraulic - discusses transmission pump speed energy control. 

2. calculations. 

Adjustable Frequency Drives for Pump Energy Savings in Power Generating Stations discusses pump energy 

3. AC calculations. Adjustable Speed Drive Systems for Cement Kiln Induced Draft Fans - discusses large fan energy calculations. 

3. AC Adjustable Speed Drive Systems for Cement Kiln Induced Draft Fans discusses large fan energy calculations. 


Page 31 of 32

65 

Medium Voltage Adjustable Speed Drive & Systems School 

TM GE Automation Systems is pleased to offer its tuition-free MV Drive & Systems School to its customers. These 

schools are offered regularly in Virginia and other cities. 

Course Topics: 

• Medium voltage [MV] induction and synchronous Motors 

• Fundamentals of adjustable speed drives 

• MV drive characteristics, payback, and specifications 

• MV power systems design concepts 

• MV switchgear, starters, transformers, reactors, 

and substations. 

• MV system protection 

• Real-world industrial application stories from the oil & gas, 

cement, mining, and water & waste industries 

• Equipment demonstrations 

For details and registration for our next school, visit our 

Web site at www.tmeicge.com. 

Global Office Locations: 

TM GE Automation Systems, LLC (USA) 

Office: 1325 Electric Road, Suite 200 

Roanoke, VA, United States 24018 

Mailing: 2060 Cook Drive 

Salem, VA, United States 24153 

Tel.: +1-540-283-2000 

Fax: +1-540-283-2001 

Email: oilgas@tmeic-ge.com 

Web: www.tmeicge.com 

Toshiba Mitsubishi-Electric Industrial Systems Corporation 

Mita 43 MT Bldg. 

13-16 Mita 3 chome, Minato-ku Tokyo 

108-0073 Japan 

Tel.: +81-3-5444-3828 

Fax: +81-3-5444-3820 

Web: www.tmeic.co.jp/global/index.html 

TMEIC Industrial Systems India Private Limited 

Unit # 03-04, Third Floor, 

Block 2, Cyber Pearl, HITEC City, Madhapur, 

Hyderabad, 500081, Andhra Pradesh, India 

Tel.: +91-40-4434-0000 

Fax: +91-40-4434-0034 

Email: inquiry_india@tmeic-ge.com 

Web: www.tmeic.in 

Toshiba Mitsubishi-Electric Industrial Systems (Beijing) Corp. 

21/F., Building B, In.do Mansion 

48 Zhichunlu A, Haidian District, 

Beijing 100098, PRC 

Tel.: +86 10 5873-2277 

Fax: +86 10 5873-2208 

Email: sales@tmeic-cn.com 

TMEIC Europe Limited 

Albany House, 71-79 Station Road 

West Drayton, Middlesex, United Kingdom 

UB7 7LT 

Tel.: +44 870 950 7212 

Fax: +44 870 950 7221 

Email: Fowler.Gary@tmeic.eu 

Web: www.tmeicge.com 

Innovation Series is a trademark of General Electric Company. 

GE is a registered trademark of General Electric Company. 

OnSite Support is a trademark of General Electric Company. 

TMDRIVE is a registered trademark of Toshiba Mitsubishi-Electric Industrial Systems Corporation. 

TMEIC is a registered trademark of Toshiba Mitsubishi-Electric Industrial Systems Corporation. 

All other products mentioned are registered trademarks and/or trademarks 

of their respective companies. 

All specifications in this document are subject to change without notice. The above brochure 

is provided free of charge and without obligation to the reader or to TM GE. TM GE Automation 

Systems, LLC does not accept, nor imply, the acceptance of any liability with regard to the 

use of the information provided. TM GE provides the information included herein as is and without 

warranty of any kind, express or implied, including but not limited to any implied statutory warranty 

of merchantability or fitness for particular purposes. The information is provided solely as a general 

reference to the potential benefits that may be attributable to the technology discussed. Individual 

results may vary. Independent analysis and testing of each application is required to determine 

the results and benefits to be achieved from the technology discussed. If you have any questions 

regarding your project requirements, please contact TM GE at 540-283-2000. 

2009 U.S. © Toshiba Mitsubishi-Electric Industrial Systems Corporation, Japan 

All Rights Reserved 

GEA-14410

Drive Solutions for the Global Oil and Gas Industry ... - GE Energy

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