FURUTEC - Konia Group

FURUTEC 

Busduct System

ABOUT FURUTEC 

Furutec Electrical Sdn Bhd was incorporated in Penang, Malaysia in 1995 to manufacture 

under-licensed Furukawa Busduct System. It is officially a wholly-owned subsidiary of the 

EITA Group of Companies with state-of-the-art CNC and laser cutting manufacturing 

facilities in 2008. 

Having benefitted from more than a decade-long of experience in producing underlicensed 

Furukawa busduct system, Furutec is noted for its relentless and uncompromising 

commitment on quality and excellence as the Japanese manufacturing practice and 

culture have been firmly embedded into Furutec busduct system. Continuing with the 

tradition of stringent Japanese technology and accumulated 10 years of experience in 

producing Furukawa busduct system, Furutec busduct system is today a proud Malaysian 

brand of precision and quality. 

The commitment towards quality products and services has enabled us to achieve ISO 

9001:2008 Quality Management System. 

Furutec Busduct System is tested and certified by ASTA, INTERTEK and TÜV SÜD PSB in 

accordance to IEC 60439-2, IEC 60439-1, IEC 60529:2001, BS 6387:1994, JIS A1304 

and other international standards. In 2009, Furutec busduct system has successfully 

obtained its full type test certificates from ASTA UK in accordance to IEC60439-1 & 

IEC60439-2. 

Furthermore, with our well-equipped and state-of-the-art R&D laboratory, our products 

are verified for temperature rise-limit test for current up to 6000A according to the 

international standards, namely IEC 60439-1, IEC 60439-2 , JIS C8364 and so on. We 

continue to innovate in order to meet our customers’ expectation and trust towards our 

products. 

Our products are successfully installed in various prestigious projects in Malaysia as well 

as South East Asia for the past decade. We take pride in further expanding our success 

to more countries through our regional partners. 

An Efficient Power 

Distribution System with 

Japanese Technology.

FURUTEC HP-Busduct 

Phase Isolator 

High Tensile Joint Bolt 

Electro-Galvanized (EG) 

Sheet Steel Housing with 

Epoxy Powder Coating 

Mylar Polyester Film 

Leaf Spring 

Aluminium or Copper Conductor 

1 

3 

2 

4 

TRANSFORMER 

1 Edgewise Elbow with 

Flange End 

2 Busduct Straight Feeder 

3 Combination Elbow 

4 Flatwise Offset 

5 Flatwise Elbow with 

Flange End 

6 Flexible Link 

7 Edgewise Offset 

8 Flange End Box 

9 End Cap 

10 Tap Box 

11 Reducer 

12 Vertical Spring 

Hanger 

13 Tap Off Unit 

14 Vertical Hanger 

15 Flatwise Elbow 

16 Busduct Joint 

17 Tee Elbow 

18 Edgewise Elbow 

19 End Closure 

5 

6

9 

10 

11 

12 

FLOOR SLAB 

13 

14 

8 

19 

CABLE 

TRAY 

17 

15 

16 

18 

7 

SWITCHBOARD

CONTENT 

About Furutec 

I 

Busduct Design Layout 

II, III 

Content 01 

Specification and Standards 02-05 

Testing & Certification 

Verification of Temperature Rise Limit 06 

Verification of Dieletric Properties 06 

Verification of Short Circuit Strength 07 

Verification of Effectiveness of the Protective Circuit 08 

Verification of Clearance and Creepage Distances 08 

Verification of Structural Strength 08 

Verification of Crushing Resistance 08 

Verification of Degree of Protection 09 

Verification of the Resistance of Insulating Materials to Abnormal Heat and Fire 09 

Verification of the Electrical Characteristics of the Busbar Trunking System 10-11 

Fire Resistance Test 12 

Physical Data 

HP-Busduct 

Copper & Aluminium Conductor Size 13 

Flange End / Flange End Box 14-15 

Flatwise Elbow / Edgewise Elbow 16 

TEE Elbow 17 

Flatwise Offset / Edgewise Offset 18 

Combination Elbow 19 

Elbow with Flange End / Flange End Box 20 

End Cap / End Closure 21 

Vertical Spring Hanger / Vertical Hanger 22-23 

Edgewise / Flatwise Hanger 24 

Expansion Unit 25 

Reducer 26 

Flexible Link 27 

Tap-Off Unit 28-29 

L-Duct 

Copper Conductor Size 30 

Flange End / Flange End Box 31 

Flatwise / Edgewise Elbow 32 

End Closure 32 

Vertical Spring Hanger / Vertical Hanger 33 

Flatwise / Edgewise Hanger 34 

Tap-Off Unit 34 

Design Factors 35-37 

Installation & Maintenance Procedure 38-44 

Project Reference 45 

CONTENTS | 01

SPECIFICATION & STANDARDS 

General 

Furutec busduct system is designed to meet the requirement of commercial, 

industrial and residential applications. It carries up to 6000A with reduced 

energy losses and heat. 

Furutec busduct system is known for: 

1) Low current density in its class 

2) Flexible and modular in design 

3) Occupying lesser space 

4) Fast installation and lower installation cost and easy maintenance 

5) Lower voltage drop and higher short-circuit ratings 

6) Good electro-magnetic shielding 

7) Fire resistance and non-flammable propagation 

8) Flexibility for future expansion 

9) Strong mechanical strength, high degree of protection and applicable 

for large span installation 

Design Standards 

Furutec busduct system is designed and manufactured in accordance to the 

following international standards: 

IEC 60439-2 Particular Requirements for Busbar Trunking System (Busway) 

IEC 60439-1 Low Voltage Switchgear and Controlgear Assemblies 

JIS C 8364 Japanese Industrial Standards for Busways 

IEC 60529:2001 Degree of Ingress Protection 

BS 6387:1994 Performance Requirements for Cables required to 

Maintain Circuitry Integrity under Fire Conditions (Adoption) 

JIS A 1304 Method of Fire Resistance Test for Structural Parts of Buildings 

BS 5486:Part 2 

NEMA BU1 

IEC60331 (Adoption) 

System Voltage & Rated Current 

The maximum operating voltage of Furutec busduct is 660V. The rated current of 

HP-Busduct is from 600A to 6000A and L-Duct from 200A to 400A for both 

copper and aluminium busduct system. 

02 | SPECIFICATION & STANDARDS

System Configuration and Phase Sequence 

The compact sandwich design of HP-busduct can be configured to 3-phase 3-wire (3P3W), 3-phase 4-wire (3P4W) or 3-phase 

5-wire (3P5W with integral earth bar). 

Due to the existence of non-linear loads in today’s modern buildings, harmonic current is an unavoidable effect that 

overheats the neutral conductor and deteriorate the performance of equipment. Furutec HP-Busduct offers an additional neutral 

conductor as an option to minimize the harmonic effects. 

L1 

L2 

L3 

L1 

L2 

L3 

N 

50%E 

L1 

L2 

L3 

N 

3P3W 

3P4W 

3P5W 

L1 

L2 

L3 

200%N 

50%E 

L1 

L2 

L3 

200%N 

3P4W 200% N 

3P5W 200% N 

Conductor and Insulation Material 

Copper and aluminium conductors are of the conductivity 99.98% and 61%, respectively. Both conductors meet all 

electrical, thermal and mechanical properties and comply to the relevant international standards, such as JIS H3140, ASTM 

B187M, BS EN 13601, etc. 

Each aluminium or copper conductor (except at joint parts) is wholly insulated with multi-layer polyester films. The polyester film 

meets the requirement of Class B(130 o C). Class F and Class H are optional. The rated insulation voltage is up to 1000V at 50Hz 

or 60Hz of frequency. Each conductor is tin-plated (silver-plated as an option) to provide protection from corrosion and high 

conductivity at the contact surface. 

Busduct Housing 

Furutec busduct system is of the low impedance type and totally enclosed for protection against mechanical damage and dust 

accumulation. The busduct housing is made of Electro-Galvanized sheet steel with epoxy powder coating. 

Conductors are fully enclosed with the busduct housing, which provides an excellent heat dissipation, thus improving the power 

transmission efficiency and reducing voltage drop. The construction of busduct housing is compact and robust in design to meet 

the rated short-circuit ratings. 

SPECIFICATIONS & STANDARDS | 03

Joint System 

Furutec busduct joint features a “maintenance-free”double-bolt joint design. This double-bolt joint system ensures a sufficient 

electrical contact area and good mechanical strength. Its high tensile clamping bolts in duct-to-duct jointing do not penetrate 

through the conductors. A spring steel material named as leaf spring that is wider than the conductors, is used to ensure a 

constant pressure on conductor contact area. It is believed that this clamped joints generate less heat at busduct joint as compared 

to bolted joint system, which necessitate the drilling or punching of holes through the conductors with the bolt holes causing 

distortion to the lines of current flow. This clamped joint with leaf springs also has a more even contact pressure than the one using 

bolt-through joint. 

HP-Busduct Joint Installation ( Indoor Type ) 

JOINT COVER 

M8 BOLT 

M12 NUT 

LEAF SPRING 

ELECTRO-GALVANISED 

STEEL SHEET HOUSING 

HIGH TENSILE 

M12 BOLT 

LEAF SPRING 

JOINT COVER 

HP-Busduct Joint Installation ( Outdoor Type ) 

M6 NUTS 

OUTDOOR COVER 

M8 BOLT 

JOINT COVER 

M12 NUT 

LEAF SPRING 

ELECTRO-GALVANISED 

STEEL SHEET HOUSING 

HIGH TENSILE 

M12 BOLT 

OUTDOOR COVER 

LEAF SPRING 

JOINT COVER 

M6 SCREWS 

04 | SPECIFICATION & STANDARDS

Method of Mounting 

For horizontal busduct installation, the edgewise/flatwise hanger or flat hanging clamp shall be installed in every 1500mm 

interval. 

Vertical busduct system shall be supported adequately with vertical spring hanger / vertical hanger at each floor. Intermediate 

supports shall be provided if floor height exceeds 5000mm. 

Degree of Protection 

Furutec busduct housing is designed and constructed to meet the requirement of indoor and outdoor installation. The degree 

of protection of Furutec busduct housing is verified and tested in accordance to IEC 60529 by ASTA, TÜV SÜD PSB and SIRIM 

Indoor Installation 

IP42, IP54 

Outdoor Installation 

IP55, IP65, IP66 

Long Period of Immersion 

IP68 

Refer to page 9 for the definition of IP classification 

Temperature Rise Limit 

The temperature rise at any points of the external metal surface of busduct housing will not exceed 55 o C above ambient 

temperature. 

The temperature rise at any points of external insulated conductors will not exceed 70 o C above ambient temperature when 

operating at rated load current. 

Both parameters are in line with IEC60439-1 and IEC60439-2. 

Furutec busduct system is able to operate at full rated current at a maximum ambient air temperature of 40 o C without any 

derating effects. 

SPECIFICATIONS & STANDARDS | 05

TESTING & CERTIFICATION 

Furutec Busduct system has been tested and certified to IEC 60439-1 

and IEC 60439-2 certified by ASTA and TÜV SÜD PSB. 

PSB Singapore 

Verification of Temperature Rise Limit 

The following pictures illustrate some temperature rise tests successfully carried out on Furutec busduct system. 

Furutec Busduct System is capable of carrying full rated current continuously in ambient condition of 95% relative humidity and 

maximum ambient temperature of 40 o C. When busduct is installed in a higher ambient temperature, the busduct current ratings 

shall be derated according to the factors as illustrated in the table below. 

Ambient Temperature o C 

40 

45 

50 

55 

60 

65 

70 

Derating Factor 

1.00 

0.95 

0.90 

0.85 

0.80 

0.74 

0.67 

Verification of Dielectric Properties 

It comprises two tests, namely dielectric test voltage and impulse voltage withstand test. They are applied to all live parts and 

interconnected exposed conductive parts of the busduct system. 

For the impulse voltage withstand test, the busduct is tested with a test voltage of 7.4kVpk. The 1.2/50µs impulse voltage applied 

3 times at the interval of 1s minimum. 

For the dielectric test voltage, it is carried out after the type tests, such as temperature rise test, short circuit strength test, degree 

of protection test, structural strength test, crushing resistance test, etc in order to ensure that no electricity current leaking occurs. 

06 | TESTING & CERTIFICATION

Verification of Short-Circuit Strength 

Short-circuit tests have been conducted on Furutec HP-Busduct system. The above left picture illustrates an example of a 

4000A HP-Busduct tested with 180kA/sec short-circuit condition. 

Ia 

250 k/div 

HP 

660V 

4000A 

U=310V 

Ib 

250 k/div 

Ia=185.2kA 

Ib=190.0kA 

Ic=180.0kA 

I 2 t=37.49 GA 2 s 

Make break time: 1.05s 

Ic 

250 k/div 

500 

kA 

250- 

-250- 

-500 

500 

kA 

250- 

-250- 

-500 

500 

kA 

250- 

-250- 

-500 

0 0.131 0.262 0.393 0.524 0.655 0.786 0.917 1.048 1.179 1.31 

131 ms/div s 

Busduct Ratings 

(Ampere) 

600A 

800A 

1000A 

1200A 

1350A 

1500A 

1600A 

2000A 

2500A 

3200A 

3500A 

4000A 

4500A 

5000A 

6000A 

Short-time Withstand Current 

(kA/1 Sec) 

40 

50 

50 

50 

50 

50 

50 

60 

100 

100 

100 

150 

150 

150 

150 

Short-time Withstand Current 

(kA/3 Sec) 

24 

30 

30 

30 

30 

30 

30 

36 

60 

60 

60 

90 

90 

90 

90 

TESTING & CERTIFICATION | 07

Verification of the Effectiveness of the Protective Circuit 

This test is conducted in 2 sessions. The first test is to verify effective connection between the exposed conductive parts of busduct 

and the protective circuit, where the resistance between the incoming protective conductor and the relevant exposed conductive 

part must not exceed 0.1 Ω. The second test is to verify the short-circuit strength of the protective circuit, where the single phase 

test between protective conductor and the nearest phase conductor. The value of the prospective short circuit current used is 60% 

of the value of the prospective short circuit current of the 3 phases short circuit withstand test of the busduct system. 

Verification of Clearance and Creepage Distances 

Creepage is the shortest path between two conductive parts (or between a conductive part and the bounding surface of the 

equipment) measured along the surface of the insulation. A proper and adequate creepage distance protects against tracking, a 

process that produces a partially conducting path of localized deterioration on the surface of an insulating material as a result of 

the electric discharges on or close to an insulation surface. Clearance is the shortest distance between two conductive parts (or 

between a conductive part and the bounding surface of the equipment) measured through air. Clearance distance helps prevent 

dielectric breakdown between electrodes caused by the ionization of air. The dielectric breakdown level is further influenced by 

relative humidity, temperature, and degree of pollution in the environment. For this verification test, the minimum distance for the 

creepage and clearance involves phase to phase & phase to earth of the busduct system. 

Verification of Structural Strength 

The verification of structural strength has been conducted on a horizontal installation of HP-Busduct. Mechanical loads are 

applied to both HP-Busduct feeder and joint section for the duration of five minutes. 

Verification of Crushing Resistance 

A HP-busduct straight feeder, which is supported horizontally on a flat surface, is tested and verified to withstand a crushing force 

of at least four times its linear mass (kg/m) for the duration of five minutes on minimum four different locations of the busduct. 


Verification of Degree of Protection 

The enclosure of Furutec Busduct System is tested in accordance to IEC60529:2001 Classification of Degree of Protection. Furutec 

Busduct System is verified to comply with IP6X and IPX6 requirement. 

The IP classification is categorized into 2 parts; The first digit denotes protection against ingress of solid objects and the second 

digit denotes protection against water. 

Protection against ingress of solid objects 

Protection against water 

4 0 

Protected against foreign 

objects greater than 1mm 

1mm 

No protection 

15 O 

4 

Protected against foreign 

objects greater than 1mm 

1mm 

2 

Drops of water falling at 

up to 15 o from the vertical 

5 

Dust protected 

4 

Projected water from all 

directions (limited ingress 

permitted) 

5 

Dust protected 

5 

Jets of water 

(limited ingress permitted) 

6 

Dust tight 

5 

Jets of water 


6 

Dust tight 

6 

Heavy jets of water 


6 

Dust tight 

7 

Effects of immersion 

between 15cm and 1m 

1m 

6 

Dust tight 

8 

Long period of immersion 

under pressure 

Verification of the Resistance of Insulating Materials to Abnormal Heat and Fire 

The glow wire test is used to simulate the effect of heat as it may arise in malfunctioning electrical equipment, such as with 

overloaded or glowing components. The glow wire test is conducted according to IEC 60695-2-10 and IEC 60695-2-11 on the 

insulating material taken from the Busduct. A test specimen is held for 30 seconds against the tip of the glow wire. The glow wire 

heated through electricity resistance with the temperature heated up to 960 o C. 


Verification of the Electrical Characteristics of the Busbar Trunking System 

Due to low impedance, the voltage drop of busduct system is low compared to conventional cable system. Therefore, busduct 

system is a more efficient power transmission media as compared to conventional cable system. The value of resistance, reactance 

and impedance of HP-Busduct at both 50Hz and 60Hz 3-Phase AC are illustrated in the tables below: 

Aluminium Conductor 

Busduct 

Ratings 

Resistance 

R 

Frequency 50 Hz 

Reactance 

X 

Impedance 

Z 

Resistance 

R 


Reactance 

X 

Impedance 

Z 

600A 

800A 

1000A 

1200A 

1350A 

1500A 

1600A 

2000A 

2500A 

3000A 

3500A 

4000A 

4500A 

5000A 

1.257 

0.848 

0.641 

0.518 

0.436 

0.378 

0.360 

0.286 

0.218 

0.180 

0.143 

0.126 

0.120 

0.095 

0.323 

0.235 

0.185 

0.152 

0.129 

0.113 

0.107 

0.084 

0.065 

0.054 

0.042 

0.038 

0.036 

0.028 

1.297 

0.879 

0.667 

0.540 

0.454 

0.394 

0.375 

0.298 

0.228 

0.188 

0.149 

0.131 

0.125 

0.099 

1.385 

0.851 

0.645 

0.523 

0.443 

0.386 

0.367 

0.293 

0.221 

0.184 

0.146 

0.129 

0.122 

0.098 

0.387 

0.282 

0.222 

0.183 

0.155 

0.135 

0.128 

0.101 

0.078 

0.064 

0.051 

0.045 

0.043 

0.034 

1.438 

0.896 

0.682 

0.554 

0.469 

0.409 

0.389 

0.310 

0.235 

0.195 

0.155 

0.136 

0.130 

0.103 

(Unit = 10 -4 Ω/m) 

Copper Conductor 

Busduct 

Ratings 

Resistance 

R 


Reactance 

X 

Impedance 

Z 

Resistance 

R 


Reactance 

X 

Impedance 

Z 

600A 

800A 

1000A 

1200A 

1350A 

1500A 

1600A 

2000A 

2500A 

3200A 

3500A 

4000A 

4500A 

5000A 

6000A 

0.974 

0.784 

0.530 

0.405 

0.331 

0.331 

0.282 

0.235 

0.166 

0.141 

0.123 

0.110 

0.094 

0.082 

0.078 

0.380 

0.323 

0.235 

0.185 

0.152 

0.152 

0.129 

0.107 

0.076 

0.065 

0.056 

0.051 

0.043 

0.038 

0.036 

1.045 

0.848 

0.580 

0.445 

0.364 

0.364 

0.311 

0.259 

0.182 

0.155 

0.135 

0.121 

0.104 

0.091 

0.086 

0.977 

0.789 

0.536 

0.412 

0.338 

0.338 

0.289 

0.241 

0.169 

0.144 

0.127 

0.113 

0.096 

0.084 

0.080 

0.456 

0.387 

0.282 

0.222 

0.183 

0.183 

0.155 

0.128 

0.091 

0.078 

0.068 

0.061 

0.052 

0.045 

0.043 

1.078 

0.879 

0.606 

0.468 

0.384 

0.384 

0.328 

0.273 

0.192 

0.164 

0.143 

0.126 

0.109 

0.096 

0.091 

(Unit = 10 -4 Ω/m) 


Voltage Drop 

V = Line-to-Line Voltage Drop (V/m) 

Voltage Drop Calculation : 

V = 3 . I (RcosØ + XsinØ) 

Where 

I 

1 + α( 55 x ( I ) 2 0 

+ 20 ) 

I 0 = Rated Current (A) 

I = Load Current (A) 

R = R95 x 

1 + 75α 

cosØ = Load Power Factor 

sinØ = 1 - cos 2 Ø 

R 

R95 

α 

X 

= AC resistance at load current (Ω/m) 

= AC resistance at rated current (Io) (Ω/m) 

= Temperature coefficient of conductor at 20 o C 

= 3.85 x 10 –3 (Copper)/4.00 x 10 –3 (Aluminium) 

= Reactance (Ω/m) 

Line-to-Line Voltage Drop for 3-phase Aluminium Busduct 

Busduct 

Ratings 

600A 

800A 

1000A 

1200A 

1350A 

1500A 

1600A 

2000A 

2500A 

3000A 

3500A 

4000A 

4500A 

5000A 

Power Factor cos φ at 50Hz 


1.00 0.95 0.90 0.85 0.80 0.75 1.00 0.95 0.90 0.85 0.80 0.75 

0.131 

0.118 

0.111 

0.108 

0.102 

0.098 

0.100 

0.099 

0.094 

0.094 

0.087 

0.087 

0.094 

0.082 

0.135 

0.122 

0.115 

0.112 

0.106 

0.102 

0.104 

0.103 

0.098 

0.098 

0.090 

0.091 

0.098 

0.086 

0.132 

0.120 

0.114 

0.111 

0.105 

0.101 

0.103 

0.102 

0.097 

0.096 

0.089 

0.090 

0.096 

0.085 

0.129 

0.117 

0.111 

0.108 

0.103 

0.099 

0.100 

0.100 

0.095 

0.094 

0.087 

0.088 

0.094 

0.083 

0.125 

0.114 

0.108 

0.105 

0.100 

0.096 

0.098 

0.097 

0.092 

0.092 

0.085 

0.086 

0.092 

0.080 

0.120 0.144 

0.110 0.118 

0.104 0.112 

0.102 0.109 

0.096 0.104 

0.093 0.100 

0.094 0.102 

0.094 0.101 

0.089 0.096 

0.089 0.096 

0.082 0.089 

0.083 0.089 

0.089 0.095 

0.078 0.085 

0.149 0.147 

0.124 0.123 

0.118 0.117 

0.115 0.114 

0.110 0.109 

0.106 0.106 

0.103 0.107 

0.107 0.107 

0.101 0.101 

0.101 0.101 

0.094 0.093 

0.095 0.094 

0.101 0.100 

0.090 0.089 

0.144 0.139 

0.121 0.118 

0.115 0.112 

0.112 0.110 

0.107 0.105 

0.104 0.101 

0.105 0.103 

0.105 0.102 

0.099 0.097 

0.099 0.096 

0.092 0.089 

0.092 0.090 

0.098 0.096 

0.088 0.086 

0.135 

0.114 

0.109 

0.107 

0.102 

0.098 

0.100 

0.099 

0.094 

0.094 

0.087 

0.088 

0.093 

0.083 

( Unit = Volt/m ) 

Line-to-Line Voltage Drop for 3-phase Copper Busduct 

Busduct 

Ratings 

600A 

800A 

1000A 

1200A 

1350A 

1500A 

1600A 

2000A 

2500A 

3200A 

3500A 

4000A 

4500A 

5000A 

6000A 



1.00 0.95 0.90 0.85 0.80 0.75 1.00 0.95 0.90 0.85 0.80 0.75 

0.101 

0.109 

0.092 

0.084 

0.077 

0.086 

0.078 

0.081 

0.072 

0.073 

0.075 

0.076 

0.073 

0.071 

0.081 

0.109 

0.117 

0.100 

0.092 

0.085 

0.094 

0.085 

0.089 

0.079 

0.080 

0.081 

0.083 

0.080 

0.078 

0.089 

0.108 

0.117 

0.100 

0.093 

0.085 

0.095 

0.086 

0.089 

0.079 

0.081 

0.082 

0.084 

0.081 

0.078 

0.089 

0.107 

0.116 

0.099 

0.092 

0.085 

0.094 

0.085 

0.089 

0.078 

0.080 

0.081 

0.083 

0.080 

0.078 

0.089 

0.105 

0.114 

0.098 

0.090 

0.083 

0.093 

0.084 

0.087 

0.077 

0.079 

0.080 

0.082 

0.079 

0.077 

0.087 

0.102 0.102 

0.111 0.109 

0.096 0.093 

0.089 0.086 

0.082 0.079 

0.091 0.088 

0.082 0.080 

0.086 0.083 

0.076 0.073 

0.077 0.075 

0.078 0.077 

0.081 0.078 

0.077 0.075 

0.075 0.073 

0.086 0.083 

0.111 0.112 

0.121 0.122 

0.103 0.105 

0.096 0.097 

0.088 0.090 

0.098 0.100 

0.090 0.091 

0.093 0.094 

0.082 0.083 

0.084 0.085 

0.086 0.087 

0.088 0.089 

0.084 0.085 

0.081 0.082 

0.093 0.094 

0.111 0.110 

0.121 0.120 

0.105 0.104 

0.097 0.096 

0.090 0.089 

0.100 0.099 

0.091 0.090 

0.094 0.093 

0.083 0.082 

0.085 0.084 

0.087 0.086 

0.089 0.088 

0.085 0.084 

0.082 0.052 

0.094 0.093 

0.107 

0.117 

0.102 

0.095 

0.088 

0.097 

0.088 

0.092 

0.081 

0.083 

0.085 

0.087 

0.083 

0.080 

0.092 

( Unit = Volt/m ) 


Fire Resistance Test 

Furutec Fire Rated Busduct is designed for essential electrical services. It is tested to JIS A 1304, BS 6387 (Adoption) 

and IEC 60331 (Adoption) 

Polyester Film 

Mica Tape 

Mylar Polyester Film 

Conductor 

Fire-Rated Mica Tape 

Conductor 

Resistance to Fire Alone 

IEC 60331 : 3 hours at 750°C 

BS 6387 Category ‘C’ : 3 hours at 950°C 

JIS A 1304 : 30 mins at 840°C 

Resistance to Fire with Water 

BS 6387 Category ‘W’ : 15 mins at 650°C (with water spray 15 mins) 

JIS A1304 

Fire resistance test has been conducted on Furutec busduct system with joint 

section in an independant testing authority. 

Flame Temperature : 840°C 

Test Voltage 

: 660 V 

Test Duration 

: 30 mins 

Test Furnace 

: Large scale fire resistant furnace, where the busduct 

is heated up to 840°C from all directions. 

BS 6387:1994 Category ‘C’ 

Resistance to fire alone test has been conducted on Furutec busduct feeder 

and joint section in an independant testing authority. 

Flame Temperature : 950 °C 

Test Voltage 

: 660V 

Test Duration 

: 3 hours 


PHYSICAL DATA 

HP-BUSDUCT 

Copper & Aluminium Conductor Size 

( Standard Straight Length ) 

3000mm 

MALE 

FEMALE 

3000mm 

( Standard Straight Length ) 

Copper Conductor : 

A 

Busduct 

Ratings 

(Ampere) 

Model No. 

A (mm) 

3P3W 

3P4W 

3P4W+E 

3P5W 

B (mm) Figure Conductor 

Per Phase (mm) 

Total Weight (kg/m) 

3P3W 3P4W 

3P3W 3P4W 3P5W 

3P4W+E 

3P4W+E 

3P5W 

B 

600A - 2000A 

Figure 1 

A 

600A 

800A 

1000A 

1200A 

1350A 

1500A 

1600A 

2000A 

2500A 

3200A 

3500A 

4000A 

4500A 

5000A 

6000A 

HP600C 

HP800C 

HP1000C 

HP1200C 

HP1350C 

HP1500C 

HP1600C 

HP2000C 

HP2500C 

HP3200C 

HP3500C 

HP4000C 

HP4500C 

HP5000C 

HP6000C 

115 

125 

150 

175 

200 

200 

225 

260 

400 

450 

500 

600 

675 

750 

780 

100 120 

1 

2 

3 

One - 6 x 40 

One - 6 x 50 

One - 6 x 75 

One - 6 x 100 

One - 6 x 125 

One - 6 x 125 

One - 6 x 150 

One - 6 x 185 

Two - 6 x 125 

Two - 6 x 150 

Two - 6 x 175 

Three - 6 x 125 

Three - 6 x 150 

Three - 6 x 175 

Three - 6 x 185 

14.0 

16.0 

20.9 

25.8 

30.8 

30.8 

35.7 

42.6 

61.5 

71.4 

81.2 

92.3 

107.0 

121.8 

127.7 

16.2 

18.7 

25.0 

31.3 

37.6 

37.6 

43.9 

52.7 

75.3 

87.9 

100.4 

112.9 

131.8 

150.7 

158.2 

17.3 

20.1 

27.1 

34.1 

41.1 

41.1 

48.1 

57.8 

82.1 

96.1 

110.1 

123.2 

144.2 

165.1 

173.5 

B 

Aluminium Conductor : 

2500A - 3500A 

Figure 2 

Busduct 

Ratings 

(Ampere) 

Model No. 

A (mm) 

3P3W 

3P4W 

3P4W+E 

3P5W 

B (mm) Figure Conductor 

Per Phase (mm) 

Total Weight (kg/m) 

3P3W 3P4W 

3P3W 3P4W 3P5W 

3P4W+E 

3P4W+E 

3P5W 

B 

4000A - 6000A 

Figure 3 

A 

600A 

800A 

1000A 

1200A 

1350A 

1500A 

1600A 

2000A 

2500A 

3000A 

3500A 

4000A 

4500A 

5000A 

HP600A 

HP800A 

HP1000A 

HP1200A 

HP1350A 

HP1500A 

HP1600A 

HP2000A 

HP2500A 

HP3000A 

HP3500A 

HP4000A 

HP4500A 

HP5000A 

125 

150 

175 

200 

225 

250 

260 

315 

450 

520 

630 

750 

780 

945 

100 120 

1 

2 

3 

One - 6 x 50 

One - 6 x 75 

One - 6 x 100 

One - 6 x 125 

One - 6 x 150 

One - 6 x 175 

One - 6 x 185 

One - 6 x 240 

Two - 6 x 150 

Two - 6 x 185 

Two - 6 x 240 

Three - 6 x 175 

Three - 6 x 185 

Three - 6 x 240 

10.2 

12.3 

14.3 

16.4 

18.4 

20.4 

21.3 

25.8 

36.8 

42.5 

51.5 

61.3 

63.8 

77.3 

11.1 

13.5 

16.0 

18.4 

20.9 

23.3 

24.3 

29.7 

41.8 

48.7 

59.5 

70.0 

73.0 

89.2 

11.5 

14.1 

16.8 

19.5 

22.1 

24.8 

25.9 

31.7 

44.3 

51.7 

63.5 

74.4 

77.6 

95.2 

PHYSICAL DATA | 13

Flange End / Flange End Box 

600A~2000A Flange End 

4-Ø10 HOLES 

600A~2000A Flange End Box 

4-M8 BOLTS 

150 


8-Ø10 HOLES 

OPENING 

A-60 

(A-30)/2 

(A-30)/2 

A 

OPENING 

A-60 

A-30 

A 

A 

OPENING 

B-60 

E 

B 

B 

REMOVABLE FRONT 

METAL COVER 

SIDE VIEW 

FRONT VIEW 

6 

SIDE VIEW 

150 

6 

C 

100 

100 

100 

450 

C 

100 

100 

100 

450 

B 

A 

NON-FERROUS MATERIAL BOTTOM 

COVER FOR CABLE TERMINATION 


4-M8 BOLTS 

TOP VIEW 

TOP VIEW 

A 

TOP VIEW 

FRONT VIEW 

TOP VIEW 

OPENING B-60 

E 

E 

B 

B 

F 

F 


METAL COVER 

SIDE VIEW 

150 

FRONT VIEW 

6 

SIDE VIEW 

150 

FRONT VIEW 

6 

C 

C 

130 

130 

130 

450 

C 

C 

130 

130 

130 

450 

B 

A 

NON-FERROUS MATERIAL BOTTOM COVER FOR CABLE TERMINATION 

14 | PHYSICAL DATA



10-Ø10 HOLES 

4-M8 BOLTS 


METAL COVER 

NON-FERROUS MATERIAL BOTTOM COVER FOR CABLE TERMINATION 

22 

22 

22 

22 

22 

20 

20 

20 

20 

20 

40 

40 

40 

40 

40 

TOP VIEW 

OPENING A-60 

(A-30)/2 

(A-30)/2 

A 

TOP VIEW 

A 

E 

OPENING B-60 

E 

E 

B 

F 

B 

F 

F 

F 

SIDE VIEW 

150 

FRONT VIEW 

6 

SIDE VIEW 

150 

FRONT VIEW 

6 

C 

C 

C 

130 

130 

130 

450 

C 

C 

C 

130 

130 

130 

450 

B 

A 

12 

D 

D 

D 

D 

D 

D 

D 

D 

D 

D 

Fig. 1 Fig. 2 

Fig. 3 

Fig. 4 

Fig. 5 

Busduct Ratings (Ampere) 

Dimensions (mm) 

Aluminium 

Copper 

Figure 

3P3W 

A 

3P4W 

3P4W+E 

3P5W 

B 

C 

D 

E 

F 

- 

600 

1 

175 

40 

- 

145 

600 

800 

1 

185 

50 

- 

155 

800 

1000 

2 

210 

75 

40 

180 

1000 

1200 

2 

235 

100 

50 

205 

1200 

1350,1500 

3 

350 450 

260 

125 

40 

230 

- 

1350 

1600 

3 

285 

150 

50 

255 

1500 

- 

4 

310 

175 

40 

280 

1600 

2000 

4 

320 

185 

45 

290 

2000 

- 

5 

375 

240 

45 

345 

- 

2500 

3 

460 

125 

40 

215 

200 

2500 

3200 

3 

510 

150 

50 

240 

225 

- 

3500 

4 

560 

175 

40 

265 

250 

3000 

- 

4 

580 

185 

45 

275 

260 

3500 

- 

- 

4000 

5 

3 

410 540 

690 

660 

240 

125 

45 

40 

330 

210 

315 

200 

- 

4500 

3 

735 

150 

50 

235 

225 

4000 

5000 

4 

810 

175 

40 

260 

250 

4500 

6000 

4 

840 

185 

45 

270 

260 

5000 

- 

5 

1005 

240 

45 

325 

315 

PHYSICAL DATA | 15

Flatwise Elbow / Edgewise Elbow 

Edgewise Elbow 

L1 

L2 

Aluminium 


Copper 

Standard Lengths 

L1 x L2 (mm) 

Minimum Lengths 

L1 x L2 (mm) 

600 to 6000 400 x 400 270 x 270 

Note : Maximum length of edgewise elbow (L1 + L2) is 2500mm 

Flatwise Elbow 


Aluminium 

Copper 


L1 x L2 (mm) 


L1 x L2 (mm) 

L2 

- 

600 

800 

1000 

1200 

1350 

1500 

1600 

2000 

- 

2500 

- 

3000 

- 

3500 

- 

4000 

4500 

5000 

600 

800 

1000 

1200 

1350,1500 

1600 

- 

2000 

- 

2500 

3200 

3500 

- 

4000 

- 

4500 

5000 

6000 

- 

400 x 400 

600 x 600 

750 x 750 

300 x 300 

305 x 305 

315 x 315 

330 x 330 

340 x 340 

355 x 355 

365 x 365 

370 x 370 

400 x 400 

440 x 440 

465 x 465 

490 x 490 

500 x 500 

540 x 540 

555 x 555 

580 x 580 

615 x 615 

630 x 630 

715 x 715 

L1 

Note : Maximum length of flatwise elbow (L1 + L2) is 2500mm 

16 | PHYSICAL DATA

TEE Elbow 

L1 

L2 

L3 

Aluminium 


Copper 


L1 x L2 x L3 (mm) 


L1 x L2 x L3(mm) 

- 

600 

800 

1000 

1200 

1350 

1500 

1600 

2000 

- 

2500 

- 

3000 

- 

3500 

- 

4000 

4500 

5000 

600 

800 

1000 

1200 

1350,1500 

1600 

- 

2000 

- 

2500 

3200 

3500 

- 

4000 

- 

4500 

5000 

6000 

- 

400 x 400 x 400 

600 x 600 x 600 

750 x 750 x 750 

235 x 235 x 235 

240 x 240 x 240 

250 x 250 x 250 

265 x 265 x 265 

275 x 275 x 275 

290 x 290 x 290 

300 x 300 x 300 

305 x 305 x 305 

335 x 335 x 335 

375 x 375 x 375 

400 x 400 x 400 

425 x 425 x 425 

435 x 435 x 435 

475 x 475 x 475 

490 x 490 x 490 

515 x 515 x 515 

550 x 550 x 550 

565 x 565 x 565 

650 x 650 x 650 

Note : Maximum length of TEE elbow ( L1 + L2 + L3 ) is 2500mm 

PHYSICAL DATA | 17

Flatwise Offset / Edgewise Offset 

L1 

L1 

L2 

L2 

L3 

L3 

Flatwise Offset 

Edgewise Offset 

Busduct Ratings (Ampere) Flatwise Offset Edgewise Offset 

Aluminium 

Copper 


L1 x L2 x L3 (mm) 


L1 x L2 x L3 (mm) 


L1 x L2 x L3 (mm) 



- 

600 

800 

1000 

1200 

1350 

1500 

1600 

2000 

- 

2500 

- 

3000 

- 

3500 

- 

4000 

4500 

5000 

600 

800 

1000 

1200 

1350,1500 

1600 

- 

2000 

- 

2500 

3200 

3500 

- 

4000 

- 

4500 

5000 

6000 

- 

400 x 500 x 400 

600 x 600 x 600 

750 x 750 x 750 

300 x 260 x 300 

305 x 270 x 305 

315 x 295 x 315 

330 x 320 x 330 

340 x 345 x 340 

355 x 370 x 355 

365 x 395 x 365 

370 x 405 x 370 

400 x 460 x 400 

440 x 345 x 440 

465 x 370 x 465 

490 x 395 x 490 

500 x 405 x 500 

540 x 345 x 540 

555 x 460 x 555 

580 x 370 x 580 

615 x 395 x 615 

630 x 405 x 630 

715 x 460 x 715 

400 x 400 x 400 270 x 200 x 270 

Note : Maximum length of offset elbow ( L1 + L2 + L3 ) is 2500mm 

18 | PHYSICAL DATA

Combination Elbow 

L1 

L1 

L2 

L2 

L3 

L3 

Aluminium 


Copper 


L1 x L2 x L3 (mm) 



- 

600 

800 

1000 

1200 

1350 

1500 

1600 

2000 

- 

2500 

- 

3000 

- 

3500 

- 

4000 

4500 

5000 

600 

800 

1000 

1200 

1350,1500 

1600 

- 

2000 

- 

2500 

3200 

3500 

- 

4000 

- 

4500 

5000 

6000 

- 

400 x 400 x 400 

600 x 600 x 600 

750 x 750 x 750 

300 x 235 x 270 

305 x 240 x 270 

315 x 250 x 270 

330 x 265 x 270 

340 x 275 x 270 

355 x 290 x 270 

365 x 300 x 270 

370 x 305 x 270 

400 x 335 x 270 

440 x 375 x 270 

465 x 400 x 270 

490 x 425 x 270 

500 x 435 x 270 

540 x 475 x 270 

555 x 490 x 270 

580 x 515 x 270 

615 x 550 x 270 

630 x 565 x 270 

715 x 650 x 270 

Note : Maximum length of combination elbow ( L1 + L2 + L3 ) is 2500mm 

PHYSICAL DATA | 19

Elbow with Flange End / Flange End Box 

L1 

L3 

L2 

450 

L4 

450 

A 

A 

B 

B 

Edgewise Elbow with Flange End box 

Flatwise Elbow with Flange End box 


Standard Lengths (mm) 

Minimum Lengths (mm) 

Aluminium 

Copper 

L1 L2 L3 L4 L1 L2 L3 L4 

- 

600 

800 

1000 

1200 

1350 

1500 

1600 

2000 

- 

2500 

- 

3000 

- 

3500 

- 

4000 

4500 

5000 

600 

800 

1000 

1200 

1350, 1500 

1600 

- 

2000 

- 

2500 

3200 

3500 

- 

4000 

- 

4500 

5000 

6000 

- 

400 400 

400 400 275 275 

600 

600 

750 

300 

305 

315 

330 

340 

355 

365 

370 

400 

440 

465 

490 

500 

540 

555 

580 

615 

630 

715 

185 

190 

200 

215 

225 

240 

250 

255 

285 

325 

350 

375 

385 

425 

440 

465 

500 

515 

600 

Refer to page 14 and 15 for dimensions of A and B 

20 | PHYSICAL DATA

End Cap / End Closure 

165mm 

B 

B 

A 

A 

35 

End Closure 

End Cap 

Copper Busduct 

Aluminium Busduct 


(Ampere) 

A (mm) 

3P3W 

3P4W 

3P4W+E 

3P5W 

3P3W 

B (mm) 

3P4W 

3P4W+E 

3P5W 


(Ampere) 

A (mm) 

3P3W 

3P4W 

3P4W+E 

3P5W 

3P3W 

B (mm) 

3P4W 

3P4W+E 

3P5W 

600 

115 

600 

125 

800 

125 

800 

150 

1000 

150 

1000 

175 

1200 

175 

1200 

200 

1350 

200 

1350 

225 

1500 

200 

1500 

250 

1600 

225 

1600 

260 

100 120 

2000 

260 

100 120 

2000 

315 

2500 

400 

2500 

450 

3200 

450 

3000 

520 

3500 

500 

3500 

630 

4000 

600 

4000 

750 

4500 

675 

4500 

780 

5000 

750 

5000 

945 

6000 

780 

PHYSICAL DATA | 21

Vertical Spring Hanger / Vertical Hanger 

155 

50 

75 

50 

50 

50 

60 

M10x30 BOLT 

275 

75 170 

60 

M10x30 BOLT 

155 

75 

50 

50 

60 

M10x30 BOLT 

275 

170 

75 

60 

M10x30 BOLT 

M12 STUD 

BOLT 

SPRING 

M12 STUD 

BOLT 

M12 STUD 

BOLT 

SPRING 

M12 STUD 

BOLT 

Vertical Hanger 

Vertical Spring Hanger 



For 600A to 1000A HP-Busduct 


M10x30 BOLT 

M10x30 BOLT 

50 

60 

For 2500A HP-Busduct 

Vertical hanger 



Vertical hanger 


M10x30 BOLT 

50 

60 

50 

75 

155 

50 

275 

170 

50 

75 

155 

50 

60 

275 

75 170 

M12 STUD 

BOLT 

SPRING 

M12 STUD 

BOLT 

M10x30 BOLT 

M10x30 BOLT 

155 

75 

50 

50 

60 

275 

75 170 50 

60 

M12 STUD 

BOLT 

SPRING 

M12 STUD 

BOLT 

M10x30 BOLT 

60 

M12 STUD 

BOLT 

SPRING 

M12 STUD 

BOLT 

75 




22 | PHYSICAL DATA

275 

155 

260 

140 

75 50 50 

75 170 50 

155 

140 

275 

260 

50 50 

75 

50 

170 

75 

75 

246 

180 

246 

180 

246 

180 

246 

180 

A 

A + 60 

120 

A 

A 

A + 60 

A + 60 

A 

A 

A + 60 

A + 60 

600A - 1000A 

1200A - 2000A 

2500A 3000A - 3500A 4000A - 6000A 

246 

246 

120 

180 

180 

A + 60 

60 

60 

60 

A 

BOLT HOLES 

BOLT HOLES 

BOLT M10x30 

155 

140 

75 50 50 

STUD BOLT M12 

BASE CHANNEL 

(BY CONTRACTORS) 

FIRE BARRIER 

( BY CONTRACTORS ) 


FIRE BARRIER 


246 

246 

120 

180 

180 

A + 60 

60 

60 

60 

A 

BOLT HOLES 

BOLT HOLES 

BOLT M10x30 

275 

260 

50 

170 

STUD BOLT M12 

BASE CHANNEL 


FIRE BARRIER 


Refer to page 13 for the dimensions of A 


FIRE BARRIER 


PHYSICAL DATA | 23

Edgewise / Flatwise Hanger 

Edgewise Hanger 

ANGLE METAL BAR 

& HANGER ROD 



& HANGER ROD 


A 

EDGEWISE HANGER 

2-M10 x 30 BOLT 

B 

C 

Fig 1 

Ø14 HOLES 


A 

B 


& HANGER ROD 


2-M10 BOLT 

Flatwise Hanger 

C 

Fig 3 

Ø14 HOLES 

2-M10x30 BOLT 


& HANGER ROD 



A 

A 

B 

B 

C 

Ø14 HOLES 

2-M10 BOLT 

C 

Fig 2 

Ø14 HOLES 

Busduct Rating (Ampere) 


Aluminium Copper A B C 

Busduct 

Ratings 

(Ampere) 

600 

800 

1000 

1200 

1350 

1500 

1600 

2000 

2500 

3000 

3200 

3500 

4000 

4500 

5000 

6000 

Fig 

1 

2 

3 

3P3W 

140 

112 

A 

3P4W 

3P4W+E 

3P5W 

160 

132 


3P3W 

220 

B 

3P4W 

3P4W+E 

3P5W 

240 

220 

3P3W 

280 

C 

3P4W 

3P4W+E 

3P5W 

300 

280 

- 

600 

800 

1000 

1200 

1350 

1500 

1600 

2000 

- 

2500 

- 

3000 

- 

3500 

- 

4000 

4500 

5000 

600 

800 

1000 

1200 

1350, 1500 

1600 

- 

2000 

- 

2500 

3200 

3500 

- 

4000 

- 

4500 

5000 

6000 

- 

38 

48 

73 

98 

123 

148 

173 

183 

238 

323 

373 

423 

443 

523 

553 

598 

673 

703 

868 

165 

175 

200 

225 

250 

275 

300 

310 

365 

450 

500 

550 

570 

650 

680 

725 

800 

830 

995 

225 

235 

260 

285 

310 

335 

360 

370 

425 

510 

560 

610 

630 

710 

740 

785 

860 

890 

1055 

24 | PHYSICAL DATA

Expansion Unit 

The busduct system expands and contracts when the current loading varies and the ambient temperature changes. 

The expansion unit is the transition section compensating the thermal expansion and contraction. 

450 

A 

500 

Aluminium 


Copper 

A 

(mm) 

- 

600 

800 

1000 

1200 

1350 

1500 

1600 

2000 

- 

2500 

- 

3000 

3500 

- 

- 

4000 

4500 

5000 

600 

800 

1000 

1200 

1350,1500 

1600 

- 

2000 

- 

2500 

3200 

3500 

- 

- 

4000 

4500 

5000 

6000 

- 

115 

125 

150 

175 

200 

225 

250 

260 

315 

400 

450 

500 

520 

630 

600 

675 

750 

780 

945 

PHYSICAL DATA | 25

Reducer 

Reducer is used to reduce busbar sizes to the final load. It provides users with more economic power transmission and 

distribution method. The minimum length (L) is 600mm and the reduction from one busbar size to another does not exceed 50% 

L 

L 

L 

L 

L 

L 

26 | PHYSICAL DATA

Flexible Link 

BUSDUCT SYSTEM 

FLANGE END 

TRANSFORMER LV BOX 

(NOT THE SCOPE OF BUSDUCT MANUFACTURERS) 

FLEXIBLE LINK 

Dimension of Flexible Link according to busduct ratings 

50 

100 

120 

150 

25 25 

30 

40 

30 

40 40 40 

35 40 40 

35 

"T" 

25 

40 20 150 

20 40 

25 

25 40 20 150 

20 40 25 

25 40 20 150 

20 40 25 

25 40 20 150 

20 40 25 

320 

25 

25 

30 40 30 

40 40 40 

35 40 40 

35 

FIG. 1 

4-Ø12 HOLES 

FIG. 2 8-Ø12 HOLES 

FIG. 3 8-Ø12 H OLES 

FIG. 4 

12-Ø12 HOLES 


Fig 

Type 

Dimension 

T (mm) 


Fig 

Type 

Dimension 

T (mm) 

600A 

800A 

1000A 

1200A 

1350A 

1500A 

1600A 

1 F5013 x 1 

2 F10013 x 1 

3 F12014 x 1 

13 

13 

14 

2000A 

2500A 

3000A 

3200A 

3500A 

4000A 

4500A 

5000A 

6000A 

4 

3 

F15014 x 1 

F12014 x 2 

14.5 

14 

4 

3 

4 

4 

F15014 x 2 

F12014 x 3 

F15014 x 3 

F15016 x 3 

14.5 

14 

14.5 

16 

PHYSICAL DATA | 27

Tap-Off Units 

Plug in box is mechanically interlocked with the busduct housing to prevent installation or removal while the MCCB is in ‘ON’ 

position. It is equipped with an operating handle to control the switching mechanism. The plug in box makes positive ground 

connection to the busduct housing before making contact to the phase conductors. 

100AF, 225AF & 400AF Tap-Off Unit & Plug In Hole (Plug In Type) 

PLUG IN HOLE COVER 

PLUG IN HOLE 

PLUG IN BOX 

MCCB 

W 

L 


To segregate the tapping position of 

each phase of the conductors 

H 

MCCB Rating 

L 

W 

H 

Fig 

100AF 

225AF 

400AF 

340 

430 

550 

230 

265 

310 

200 

220 

250 

1 

1 

2 

W H 70 W H 70 

N 

L3 

L2 

L1 

E 

L 

L 

Open 

160 

E 

E 

160 

REMOVABLE BOTTOM COVER 

FOR CABLE TERMINATION 

E 



E 

Open 

Fig 1 

Fig 2 

E L1 L2 L3 N 

100AF & 225AF Plug In Box 

E L1 L2 L3 N 

400AF Plug In Box 

Refer to the installation procedures of tap-off units on page 41 

28 | PHYSICAL DATA

600AF, 800AF, 1000AF & 1200AF Tap Box and Tap Bar (Bolt On Type) 

4-M6 Screw 

W 

L 

H 



TAP BAR 

TAP BOX 

MCCB Rating W L H 

600AF 

800AF 

1000AF 

1200AF 

373 

373 

488 

488 

908 

998 

1108 

1108 

200 

200 

290 

290 

PHYSICAL DATA | 29

L-Duct 

Copper & Aluminium Conductor Sizes 

The air-insulated type of L-Duct can be configured as 3-phase 3-wire (3P3W), 3-phase 4-wire (3P4W with external earth bar) 

and 3-phase 5-wire (3P5W with integral earth bar). 

Conductors 


Electro-Galvanized Sheet 

Steel Housing with Epoxy 

Powder Coating 

167 

A 

L1 L2 L3 N E 

Copper Conductor : 


(Ampere) 

A (mm) 

Conductor per Phase 

(mm) 

Weight (kg/m) 

200A 

56 

3 x 20 

7.5 

300A 

71 

3 x 35 

9.5 

400A 

96 

3 x 60 

12.5 

30 | PHYSICAL DATA

Flange End / Flange End Box 

Flange End 

4-Ø10 HOLES 

Flange End Box 

F 

G 

D 

D 

20 

20 

40 

H 

OPENING 

B-60 

B-30 

B 

OPENING 

A-60 

E 

N 

L3 

L2 

L1 

A-30 

A 

C 

L1 L2 L3 

N 

E 

D 

D 

D 

NON-FERROUS MATERIAL BOTTOM 

COVER FOR CABLE TERMINATION 

D 

E 

N 

L3 

L2 

L1 

REMOVABLE METAL 

FRONT COVER 

Ø11 HOLE 

2-Ø11 HOLE 

Figure 1 Figure 2 

Copper Busduct System : 

Busduct Rating 

(Ampere) 

Fig 

A 

(mm) 

B 

(mm) 

C 

(mm) 

D 

(mm) 

E 

(mm) 

F 

(mm) 

G 

(mm) 

H 

(mm) 

200A 

300A 

400A 

1 

1 

2 

360 

360 

450 

150 

165 

190 

120 

120 

160 

70 

70 

100 

20 

35 

60 

350 

350 

400 

350 

350 

500 

120 

135 

160 

PHYSICAL DATA | 31

Flatwise / Edgewise Elbow 

E 

N 

L3 

L2 

L1 

E 

N 

L3 

L2 

L1 

Flatwise Elbow 

Edgewise Elbow 

End Closure 

155 

170 

Copper Busduct System 

A 


(Ampere) 

200A 

300A 

400A 

A 

(mm) 

59 

74 

99 

32 | PHYSICAL DATA


167 

STUD BOLT 

(M12x330) 

A 

50 

FLAT HANGING CLAMP 

250 

BASE CHANNEL 


250 

167 

30 

A 

SPRING 

BOLT M10x30 

C/W CLAMP 

20 

145 

140 

75 50 40 

STUD BOLT M12 

BASE CHANNEL 


FRONT VIEW 

FIRE BARRIER 



167 

STUD BOLT 

(M12x220) 

FLAT HANGING CLAMP 

BASE CHANNEL 


20 

40 

A 

250 

250 

50 

167 

30 

A 

BOLT M10x30 

C/W CLAMP 

265 

260 

170 

STUD BOLT M12 

FRONT VIEW 

75 

BASE CHANNEL 



FIRE BARRIER 



(Ampere) 

A 

(mm) 

200A 

300A 

400A 

56 

71 

96 

Copper Busduct System 

PHYSICAL DATA | 33

Flatwise / Edgewise Hanger 

HOLDER 

172 


& HANGER ROD 


FLAT 

HANGING 

CLAMP 

167 


& HANGER ROD 


A 

B 

208 

288 

C 

348 

Edgewise Hanger 

Flatwise Hanger 


(Ampere) 

A (mm) B (mm) C (mm) 

200 

300 

400 

128 

143 

168 

208 

223 

248 

268 

283 

308 

Tap-Off Units 

Plug in box is mechanically interlocked with the busduct housing to prevent installation or removal while the MCCB is in ‘ON’ 

position. It is equipped with an operating handle to control the switching mechanism. The plug in box makes positive ground 

connection to the busduct housing before making contact to the phase conductors. 

W 

H 

63 

W 

L 

H 

L 

70 

E 

Open 



E 

N 

L3 

L2 

L1 

E 

MCCB Rating W (mm) L (mm) H (mm) 

100AF 

225AF 

195 

230 

400 

500 

118 

118 

Refer to the installation procedures of tap-off units on page 41 

L1 L2 L3 N 

34 | PHYSICAL DATA

DESIGN FACTORS 

1. Minimum Distance Between Parallel-Installed Busduct System. 

1.1 Indoor Type (Edgewise Installation). 

Busduct joints installed side by side. 

Busduct joints installed deviating from each 

other (Dimension “C” is above 190mm). 

JOINT POINT 

JOINT POINT 

190 

(C) 

A 

A 

B 

B 


(Ampere) 

Dimension “A” (mm) 

3P3W 

3P4W/3P5W 

Dimension “B” (mm) 

3P3W 

3P4W/3P5W 

600 - 6000A 

150 

160 

85 

95 

1.2 Outdoor Type (Edgewise Installation). 

Busduct joints installed side by side. 

Busduct joints installed deviating from each 

other (Dimension “C” is above 500mm). 

A 

A 

B 

B 

110 

110 

JOINT POINT 

JOINT POINT 

500 

(C) 

60 

JOINT POINT 


(Ampere) 

Dimension “A” (mm) 

3P3W 3P4W/3P5W 

Dimension “B” (mm) 

3P3W 3P4W/3P5W 

600-6000A 

170 

190 

130 

150 

DESIGN FACTORS | 35

1.3 Indoor / Outdoor Type (Flatwise Installation). 

Minimum clearance for busduct installed flatwise in parallel. 

100 100 

1.4 Plug-in Type Busduct Installation. 

Minimum clearance for plug-in busduct installed in parallel. 

PLUG IN BUSDUCT 

PLUG IN BOX 

W W W 

50 50 

2. Minimum Clearance between busduct and wall, floor, etc. 

2.1 Ceiling and Wall. 2.2 Beam. 

CEILING 

CEILING 

CEILING 

200 

200 

190 

50 

WALL 

200 

WALL 

200 

JOINT POINT 

36 | DESIGN FACTORS

2.3 Distance between busduct joint and wall surface for through wall installation 

Indoor Type Busduct. 

Outdoor Type Busduct. 

WALL 

WALL 

240 

240 

240 

JOINT POINT 

(INDOOR TYPE) 

JOINT POINT 

(INDOOR TYPE) 

JOINT POINT 

(OUTDOOR TYPE) 

2.3 Distance between busduct joint and floor/ceiling surface for through floor installation (A) and ceiling installation (B) 

JOINT POINT 

VERTICAL SPRING HANGER 

450 

(A) 

300 

(A) 

VERTICAL HANGER 

BASE CHANNEL 


75 

FLOOR SLAB 

FLOOR SLAB 

240 

(B) 

240 

(B) 

75 

Busduct joints must not be installed in between the wall and floor. The busduct joints shall be at least 240mm from the ceiling 

surface. If vertical spring hanger is installed on the floor, the distance between busduct joint and base channel shall be at least 

450mm. If vertical hanger is installed on the floor, the distance between busduct joint and base channel shall be at least 300mm. 

The height of base channel is recommended to be 75mm. 

DESIGN FACTORS | 37

INSTALLATION & MAINTENANCE PROCEDURE 

Common Practice 

Storage and Preparation Prior to Installation 

1. When the busduct arrives at project site, check the type and quantity of busduct feeders and accessories from delivery orders. 

Inspect for any physical damages caused during transportation and unloading. 

2. Keep the busduct at dry place, away from water and moisture, preferably under the roof protected from rain. Cover the 

busduct with water-proof material if necessary. 

3. Do not lay the busduct directly onto the ground or in an upright position. Always place pieces of wood under the busduct and 

stack up firmly. 

4. For long period storage, ensure that the busduct is placed at a dry place free from condensation. 

Installation Procedures 

Installation Procedures 

1. To prevent the joint of the busduct from being soiled, wrap both ends with water-proof material while unpacking. 

2. Use sufficiently strong materials and equipment for transportation and lifting. 

3. Insert thick pieces of rag or corrugated cardboard when hanging busduct with rope to prevent the busduct from being 

damaged or scratched. For busduct rated 2500A and above, pieces of strong wood should be used when rope is applied, 

in order to prevent the busduct housing from being deformed. 

4. Before installing the busduct joint, examine the conductor contact surface or insulation materials for any damages. 

Besides, ensure that the joint areas are not soiled with dust, dirt and other foreign matter. 

5. During the busduct joint installation, it is recommended to perform Megger test for every busduct feeder during installation 

works. In case of the megger value is found abnormal after installation of the whole busduct route, extra time will be 

required to determine the faulty busduct feeders. 

6. Ensure that the ends of busduct are protected against water and dust if the installation halted during construction. 

38 | INSTALLATION & MAINTENANCE PROCEDURE

Busduct Joint 

HP-Busduct Joint Assembly 

1. Determine the male and female sides of the busduct feeders to be connected. 

2. Align the busducts feeders end to end. 

3. Align the leaf springs so that the high tensile bolts can be fitted through the busduct housing. 

4. Tighten the two bolts alternately to ensure even distribution of force is applied to the busduct joint. Tighten them until the leaf 

springs become almost flat and until the snap-pin-hole on the high tensile bolt is visible. 

5. Insert the snap pins into the pin holes. 

6. Cover the busduct joint section with joint covers on both sides. 

7. The installation is complete. 

1 

2 

3 

4 

4 

5 

5 

6 

7 

INSTALLATION & MAINTENANCE PROCEDURE | 39

L-Duct Joint Assembly 

1. Align two L-Duct busduct feeders by 

overlapping the conductors. 

2. Fix busduct housing with side covers on both 

sides. 

M5 SCREW 

JOINT COVER 

3. Connect each phase conductor with screws, 

nuts, plain washes and spring washes. Make 

sure that the screws are fully tightened. 

4. Insert a phase isolator to the joint section. 

5. Connect the external earth bars to the earth 

bars at the side of busduct housing. 

PHASE ISOLATOR 

6. Install the joint cover on both sides of busduct 

housing to complete the joint assembly. 

M8 BOLT 

BELLEVILLE WASHER 

SPRING WASHER 

M8 NUT 

M6 SCREW 

SIDE COVER 

EXTERNAL 

EARTH BAR 

L1 

L2 

L3 

N 

E 

JOINT COVER 

M5 SCREW 


Tap Off Units (Plug In Type) 

1. Check the drawings to identify the location of tap-off units to be installed. 

2. Remove the cover of each plug-in hole. 

3. Ensure that the MCCB handle is in ‘OFF’ position. 

4. By using the earth jaw of the plug in box as guidance, insert the plug in clips into the plug in hole of the busduct. 

5. Open the top cover of the plug in box. Fasten the duct-fixing screws in the box to firmly attach the plug in box to the busduct. 

6. Terminate cables to the outgoing terminal of MCCB and insert internal barriers (perspex) to prevent accidental contact with 

the live parts at the terminals of MCCB. 

7. Installation is complete. 

1 

2 

2 

Insert Earth 

Jaw here 

3 

4 

4 

Plug in 

Clips 

5 

5 

5 

7 

Tap-off units shall make positive ground connection with 

busduct housing or earth conductors before making contact 

with the phase conductors. 

Make sure that the MCCB is in ‘OFF’ position before carrying 

out any live installation works of tap-off unit to the plug in holes 

of busduct system. 


Tap Box (Bolt On Type) 

1. Remove the tap bar cover. If the busduct is 3P5W type, extra care is required in order not to damage the earth during 

removal of the cover. 

2. Open the cover of the Tap Box and insert the tap bar through the opening of the tap box and fix the box to the tap bar 

flange by fastening the screws. 

3. Fix the box to the busduct housing using flat hanging clamps provided by Furutec 

4. Fix the top cover of the box. 

5. Installation is complete. 


1. Drill 4 nos bolt holes of Ø12mm on the housing of the busduct. 

2. Install the vertical hanger and fix to the busduct tightly. 

3. Connect the busduct in sequence and install the vertical spring hangers to each floor accordingly. 

Refer to page 22 and 23 (HP-Busduct) and page 33 (L-Duct) for the details of dimension of vertical spring 

hanger and vertical hanger 

Horizontal Hanger (Edgewise/Flatwise Hangers) 

1. Prepare the angle metal support for busduct prior to the horizontal hanger installation. 

2. Hang the hanger rods from the ceiling and attach the angle metals at the height of the busduct to be laid. 

3. The horizontal hangers should be installed in every internal of at least 1500mm (1.5m) including the busduct elbows. 

Refer to the details of Edgewise / Flatwise Hanger on page 24 (HP-Busduct) and page 34 (L-Duct) 


Inspection and Testing upon Completion of Busduct Installation 

1. After the completion of busduct installation at project site, it is advisable to carry out a thorough inspection on the whole 

busduct route, followed by measurement of insulation resistance / Megger. 

2. Before conducting the measurement of insulation resistance, all the equipment connected to busduct system should be 

disconnected and MCCB rotary handle of tap-off units should be in ‘OFF’ position. 

3. The insulation resistance value cannot be specified due to different length of the busduct and environmental condition. But 

if it is installed in a dry atmosphere, the value of resistance should be approximately 100 MΩ (500V Megger). In case, the 

measurement is less than 10MΩ, thorough examination is required as there might be some external factors, which decrease 

the insulation strength and energizing of busduct system is not recommended. 

4. The following inspection procedures should be carried out. Determine whether:- 

4.1) The busduct feeders are physically damaged. 

4.2) All the connecting parts are fixed precisely (e.g. flange end box, tap-off units, etc) 

4.3) The bolts for connecting to the equipment are securely fastened. 

4.4) The busduct joint are tightened in accordance to Furutec‘s requirement and recommendation. 

4.5) The hangers support the busduct securely. 

Maintenance 

The following maintenance procedures and periodical inspection are recommended to ensure a safe operation of busduct 

system for long terms. 

1. Period of Inspection 

1.1 An inspection on busduct once a year or once every two years is recommended. If busduct system is 

installed in unfavourable conditions such as, temperature and/or humidity is high, there is a lot of dust or 

in similar environment, the periodical inspection must be conducted. 

1.2 In the event of the following unusual conditions, inspection must be carried out immediately in each case: 

a.) After severe earthquake 

b.) After being involved in a fire 

c.) After being exposed to water 

d.) After an electrical fault 

2. Maintenance and Routine Inspection 

2.1 Inspection on External Appearance 

Check whether :- 

There is any deformation, damage, dirt, etc throughout the whole length of busduct systems 

There is any dislocation, bending and other abnormality of the connecting covers, hangers and plug-in 

appliances 


2.2 Environmental Inspection 

The environment, where the busducts are installed, sometimes changes after the installation works. Check whether the 

environment has become hazardous due to water, moisture, high temperature, corrosive gas, immoderate vibration, dust, etc. 

2.3 Inspection for Abnormal Heat 

A high-tech Infra Red Thermography instrument is recommended to detect abnormal heat and measure the operating 

temperature of busduct system. 

For the ease of maintenance, a thermal indicator can be placed onto the busduct housing. If the temperature rise of the busduct 

housing exceeds the limit, the colour of the indicator will change. e.g. from white to red colour. 

2.4 Inspection on Connection Sections 

Check whether :- 

HP-Busduct is securely fastened with joint bolts and nuts and both sides of the busduct joint sections are held 

with a pair of leaf springs. Leaf springs are flat and the pin holes are inserted with snap pins 

Screws and nuts at the overlapping conductor of L-Duct joint sections are not loose due to thermal expansion 

and contraction 

Busduct is supported by vertical spring hangers, vertical hangers, edgewise / flatwise horizontal hangers according to 

manufacturer’s requirement and recommendation. 

All the connecting parts, such as leaf springs, hangers, busduct joints, joint covers, etc are fixed precisely 

2.5 Inspection on Load Condition 

After the installation of plug-in busduct feeders, increase of electrical load is expected at the early stage. An inspection has to 

be carried out to ensure that the total connected load does not exceed the rated current of the busduct before the load is 

increased. 

2.6 Measurement of Insulation Resistance 

Measure the insulation resistance between each conductor and between conductor and housing. When it is less than 5MΩ or far 

below the previous value, the possibility of existence of defect is very high. When the measurement is carried out, the electrical 

loads and connected equipment shall be disconnected. 

2.7 Inspection on Rust or Peeling of Paint on Busduct Housing 

If there are some peeled-off paint or rust on the busduct housing, cleaning work and touch-up painting are recommended. 


PROJECT REFERENCE 

Commercial Projects 

Resort World Sentosa 

(Singapore) 

Genting Highland 

(Malaysia) 

Suria KLCC & Maxis 

Tower (Malaysia) 

Crown Plaza Hotel 

(Singapore) 

Four Point Hotel - 

Sheraton (Malaysia) 

Empire Subang 

(Malaysia) 

OCBC Bank (Malaysia) 

Asia City Shopping 

Mall (Malaysia) 

Jusco Bandar Perda - 

Penang (Malaysia) 

Sunway Pyramid Mall 

(Malaysia) 

Public Utility Projects 

Serdang Hospital 

(Malaysia) 

Sungai Buloh Hospital 

(Malaysia) 

Nanyang Technology 

University NTU 4/5/6 

(Singapore) 

Supreme Court 

(Singapore) 

Duke NUS Graduate 

Medical School 

(Singapore) 

Industrial Projects 

Renewable Energy 

Corporation - REC 

(Singapore) 

Infineon Kulim 

(Malaysia) 

Soitec Wafer Plant 

(Singapore) 

Fuji Electric 

(Malaysia) 

Residential Projects 

Impian Meridian 

Mixed Development 

(Malaysia) 

Hartamas Regency K2 

(Malaysia) 

Midvalley North Point 

Condominium & office 

Tower (Malaysia) 

Bintang Fairlane 

Residences (Malaysia) 

PROJECT REFERENCE | 45

Lot 4, Block A, Jalan SS13/7 

Subang Jaya Industrial Estate 

47500 Subang Jaya 

Selangor Darul Ehsan, Malaysia 

Tel: +603-5637 8363 Fax: +603-5635 0538 

Website: www.eita.com.my 

FURUTEC Electrical Sdn. Bhd. (057207-W) 

(member of EITA Group of companies) 

Plot 89, Lorong Perindustrian Bukit Minyak 11, 

Kawasan Perindustrian Bukit Minyak, 

MK 13, 14100 Seberang Perai Tengah, Penang, Malaysia 

Tel: +604-508 0228 Fax: +604-508 0227 

E-mail: furutec@eita.com.my 

Website: www.furutec.com.my 

Sales & Marketing contact : 

* The information is subject to change without prior notice. 

Consult Furutec at the time of order. 

FTAug10@2010. All rights reserved.

FURUTEC - Konia Group

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