Electrical Unbalance load(current) test
Testing Diagram and Testing Procedure.
1- Current or load balance test:
Load balancing is the important factor in electrical system. It means all three phases should be loaded as equal. Maximum unbalance load should not be more than 30% which can be tolerated by system. If the unbalance load is more than 30% then the system may be failure.
So for better health of equipment, the unbalance load is tested. It is tested through clamp meter or amp meter.
2- Testing diagram of breakdown voltage test:
3- Load(Current) test kit:
- Panel busbar cover open close required tool.
- Clamp meter.
- Electrical rubber gloves.
- Safety shoes.
- All required tool will be properly insulated.
4- Safety guideline for load balancing test:
Unbalance load test is carried out on the running load panel so some precaution is important.
- Testing equipment battery should be charged .
- During testing electrical gloves should be wear in your hands.
- Related panel all equipment should be ON condition.
- Panel cover should be open and close with carefully.
5-Unbalance load test procedure:
- All safety guideline should be followed during testing procedure which is mentioned above.
- Open the panel side cover with carefully.
- Select the knob of clamp meter on Amp range.
- Open the zaw of clamp meter and capture the R phase cable.
- Check the display and note down the testing load value.
- Again test load on Y, B phase and Neutral with same process.
- Neutral current shows unbalance load.
- Comparison all phase load and find unbalance load.
- Neutral load is also called as unbalance load.
6-Unbalance load testing observation. :
- Comparison all phase load value and fined out unbalance load.
- Comparison all phase difference load value with neutral load value it should be equal.
- We can find out easily which phases is overloaded.
