Technical Table for Bus Bars

KBA

800

100

1250

1600

2000

2500

3000

4000

Standards

IEC 439-1, IEC 439-2

Insulation Voltage

V

IEC 664-1 / 1000V

Frequency

Hz

50 / 60

Protection Class

IP 42 (IP 54 with accessories)

Rated Current

A

800

1000

1250

1600

2000

2500

3000

4000

Short circuit (Dynamic)

kA

105

105

105

220

220

220

264

264

Short circuit (1 sec)

kA

50

50

50

100

100

100

150

150

Resistance (R)

m / m

0.057

0.043

0.034

0.029

0.021

0.017

0.014

0.011

Inductive Reactance (X)

m / m

0.031

0.026

0.019

0.016

0.013

0.010

0.009

0.006

Impedance (Z)

m / m

0.065

0.050

0.039

0.032

0.025

0.020

0.017

0.013

L1, L2, L3

mm2

525

700

910

1050

1400

1820

2100

2730

N

mm2

525

700

910

1050

1400

1820

2100

2730

Weight – Feeder, Bolt-on

Kg/m

16

19

22

29

36

44

53

62

Weight – Plug-in

Kg/m

17

20

23

31

38

46

56

65

Conductor Length

mm

7*75

7*100

7*130

2(7*75)

2(7*100)

2(7*130)

3(7*100)

3(7*130)

Voltage Drop Calculation:

Voltage drop calculation on lines where energy is distributed and transported through the busbar channel system is made by taking the following criteria into consideration.

V = [ L *I * ( R * Cos j + Sin j ) 10^-3 ] (Volt)

The coefficient in the formula is an empirical value. )

V

=

Voltage Drop (V)

=

Load Distribution Coefficient

L

=

Line Length (m)

I

=

Line Current (A)

R

=

Characteristic Resistance (m / m )

XL

=

Inductive Reactance (m / m )

Cos

=

Power Factor

Ambient Temperature

‘’ t ‘’

40 ºC

1.00

45 ºC

0.95

50 ºC

0.90

55 ºC

0.85

The busbar channel system is designed for an average environmental temperature of 35 ºC and a maximum of 40 ºC. For ambient temperatures higher than 40 ºC, use the multipliers in the table.