Medium Voltage Application Guide

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1 INTRODUCTION Introduction 1.1 Scope This document specifies the minimum requirements for power factor correction when used in conjunction with electronic soft starters. This specification is intended as a guideline for suppliers wishing to supply their product to for their . 1.2 Supplier Qualifications The equipment shall have been manufactured by a single vendor. The manufacturer shall be certified under ISO9000. The manufacturer shall be able to demonstrate previous successful application of power factor correction with soft starters 2
2 ENVIRONMENTAL SPECIFICATIONS Environmental Specifications 2.1 Environmental Specifications 2.2 Physical Specifications The equipment shall be suitable for storage at temperatures from -25 ºC to +55 ºC. The equipment shall be suitable for use at temperatures from -10 ºC to +60 ºC. The equipment shall be suitable for use at temperatures up to 40 ºC without derating. The equipment shall be suitable for operation at altitudes up to 1000 m above sea level without derating. The equipment shall be suitable for use in environments with relative humidity between 5% and 95% (non-condensing). The equipment shall be modular in design and construction. The power factor correction components must be installed in a dedicated panel and not the soft starter panel. The integrated power factor panel must be enclosed up to IP4X and include: • Withdrawable Vacuum, fused contactor with ratings: 1. Class: indoor withdrawable 2. Rated <strong>Voltage</strong>: 12 kV 3. Rated lightning impulse withstand voltage: 75 kV (peak) 4. Rated 1-minute power frequency withstand voltage: 28 kV (rms) 5. Rated Frequency: 50 Hz 6. Rated short circuit breaking current: 20 kA (with fuses) 7. Rated short circuit making current: 62.5 kA (with fuses) 8. Duty: continuous 9. Utilisation factor: AC6 10. Protection coordination: Type 2 11. Minimum Service Life: 100,000 operations at full operating current. • Inrush reactors designed to reduce the inrush current to that required by IEC60871-1. The supplier must provide calculations for the correct selection of the reactors. • Capacitors shall be selected to improve the power factor to the level required by the local utility. • The capacitor shall have a voltage rating 20% above the nominal operating voltage so as to be able to withstand high voltages associated with capacitor switching. • The capacitor circuit must be supplied from the line side of the soft starter. • All panels must provide separate chambers for all main sections including Busbars, Contactor, Capacitors. The entire panel, including inter-chamber, must be arc fault certified to 31.5kA for 3 seconds. • All panels shall have the following ratings: 1. IAC classified AFLR 2. Rated short term withstand current: 31.5kA for 3 seconds 3. BIL: 75kV 3
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Medium Voltage Application Guide
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CONTENTS 4 Switchgear .............
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INTRODUCTION 1 Introduction This re
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03340.B Current Torque MOTORS magne
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Torque Current MOTORS Typical start
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03340.B Current Torque MOTORS 2.2 M
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13190.A Current Torque 13193.A Curr
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MOTORS How does soft start compare
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MOTORS Soft starters Electronic sof
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MOTORS Bypassed VFD installation 1
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13473.A SOFT STARTERS Open loop sof
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SOFT STARTERS 3.2 Benefits Electric
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13490.A 13489.A SOFT STARTERS Snubb
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SOFT STARTERS Enclosed soft starter
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12996.A SOFT STARTERS Local control
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SOFT STARTERS Key Features MVS soft
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SOFT STARTERS Vibration ...........
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SOFT STARTERS MVX Soft Starter Over
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SOFT STARTERS General Technical Dat
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11083.B 11082.B SOFT STARTERS Power
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13015.A 13013.A SOFT STARTERS Soft
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SOFT STARTERS Predictive Maintenanc
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SOFT STARTERS Medium voltage starte
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STAR T STO P RESET INPU TA INPU T B
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Ready R un Trip Local 11081.C SOFT
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13522.A 13521.A 13513.A SOFT STARTE
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09593.A Current SOFT STARTERS AC53
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09678.B Current Torque (% motor ful
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13634.A 13633.A Current (%FLC) Torq
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SOFT STARTERS Example Calculate the
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SOFT STARTERS Operating Sequence NO
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13530.A SOFT STARTERS Typical multi
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SOFT STARTERS AuCom multi-motor sta
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13531.A SOFT STARTERS Slip ring mot
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SOFT STARTERS 3.8 Common standards
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11158.A SWITCHGEAR 4.1 Switchgear C
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SWITCHGEAR ANSI-defined switchgear
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11165.A 11163.A SWITCHGEAR 4.2 Stan
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11169.A 11166.A SWITCHGEAR Bus Coup
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11174.A 11173.A SWITCHGEAR Metering
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SWITCHGEAR Design Busbar system des
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SWITCHGEAR Resonant frequency The b
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SWITCHGEAR Interlock scheme 1: Two
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SWITCHGEAR Causes of internal arc T
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13716.A Current 13680.A SWITCHGEAR
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11163.A SWITCHGEAR When a withdrawa
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13720.A Percentage DC component SWI
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13722.A Voltage SWITCHGEAR Transien
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13681.A SWITCHGEAR Medium Voltage C
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13684.A Maximum cut-off current (kA
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13688.A 13689.A 13691.A 13690.A 136
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SWITCHGEAR IEC Ratings Disconnector
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Pre-arcing time (seconds or minutes
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SWITCHGEAR Nominal current, In (A)
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13745.A Fuse rating (A) 13697.A Fus
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SWITCHGEAR Current Transformers A c
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Flux () SWITCHGEAR Exercises 1. A C
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SWITCHGEAR Class type Use a meterin
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SWITCHGEAR Exercise 2: Protection C
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SWITCHGEAR NEMA/IEEE Ratings These
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13752.A SWITCHGEAR flux). The secon
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13761.A 13760.A 13758.A 13759.A SWI
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13754.A SWITCHGEAR Distance This pr
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Incomer feeder panel Transformer Mo
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SWITCHGEAR Many manufacturers use a
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13766.A SWITCHGEAR Motor Line Induc
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Magnitude of overvoltage /p.u. Line
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SWITCHGEAR Exercise A 17.5 kV secon
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13807.A 13808.A SWITCHGEAR Power Fa
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SWITCHGEAR Exercise Calculate the t
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13812.A SWITCHGEAR Calculations: pe
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SWITCHGEAR Step 3: Calculate the eq
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13847.A SWITCHGEAR The calculated s
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SWITCHGEAR Transformer internal imp
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SWITCHGEAR Exercise For a motor run
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SWITCHGEAR The total coefficient fa
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SWITCHGEAR Short-time withstand cur
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Page 184 and 185: RESOURCES 6 Resources 6.1 Equipment
Page 186 and 187: CONTENTS Contents Introduction ....
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Page 196 and 197: 1. 1. INTRODUCTION Introduction 1.1
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Page 204 and 205: SPECIFICATION: Power factor Correct
Page 208 and 209: 3 SUPPORT AND SERVICES Support and
Page 210 and 211: CONTENTS Contents Introduction ....
Page 212 and 213: 2. DOCUMENTATION Documentation 2.1
Page 214 and 215: 3.2.2 MV Equipment a) Circuit break
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Page 218 and 219: RESOURCES 6.2 Metric/Imperial Conve
Page 220 and 221: RESOURCES 6.4 Incoterms Internation
Page 222 and 223: RESOURCES kW Active power unit LRC
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Medium Voltage Application Guide

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