Electrical Unbalance load(current) test
Testing Diagram and Testing Procedure.

  1. Current or load balance test
  2. Testing Diagram of current load balance test.
  3. Testing kit.
  4. Testing Procedure.
  5. Test parameters observation.

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:

Electrical Unbalance load(current): testing diagram and procedure.

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.

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