BUSBAR CALCULATION

 

Busbar Calculation - Busbar is a conductor bar that is often found in distribution panel equipment for low voltage to high voltage distribution.

In determining and selecting the busbar size to be used on a distribution panel equipment, things that must be considered are as follows:

Busbar dimensions taking into account normal operating conditions

Operational voltage when operating, both between line and line and between line and neutral

The current that will flow on the busbar, which will affect the determination of the type and cross-sectional area of ​​the busbar itself.

Apart from the above, what is also noteworthy is the ability of the insulator where the busbar is installed, where the ability of the insulator must be able to withstand and withstand the mechanical effects that arise, whether caused by the effect of rising temperatures on the busbar or shock / vibration due to short circuit disturbances ) which propagates from the busbar to the insulator.

To perform calculations in determining the type and size of the busbar to be used, several operating parameters are needed as a reference, namely:

1. Network short circuit (Ssc) - Network short circuit value - MVA

2. Rated Voltage - V

3. Operating Voltage - V

4. Rated Current - Rated Current - A

While the things that must be considered for the physical characteristics of the busbar are as follows:

►Busbar cross-sectional area (Cross Section) - cm2

►The distance between phases - phases - cm

►The length of the insulator which supports a phase - cm

►Room temperature - oC

►Permissible temperature rise

►Busbar Profile (Flat or Round)

►Busbar Material (Copper (Copper) or Aluminum)

►Busbar Mounting (Flat Mounted or Edge Mounted)

Thank's .