Electrical Panel Board Testing Procedure

The following tests are to carried out in a distribution board.

Electrical panel board testing procedure.

Subject panel shall be externally examined before opening or removing any protective covers to determine the possible presence of unsafe conditions. Testing procedure of db s cu s. Where applicable testing of circuit breakers generally include. Answer added by faisal shabir shabir ahmad project engineer national for electrical panel boards ksa jeddah 4 years ago continuity test polarity test 2 5 kv test functional test.

Panel to be tested shall be energized and under adequate load. Between transformers and mdb s. Inspection test and measurement procedures for lv and mv up to 36kv switchgears on photo eaton cutler hammer magnum ds switchgear inspection and transformer testing for mv switchgear similar considerations apply although more extensive checks on protective devices circuit breaker oil vacuum bottle contact distances are required as. Mounted in the panel using the scheme.

There are 3 cases to be considered. Following are the procedure for thermography testing of electrical panels. Check the operation of the indicating devices voltmeters protective devices etc. All reading will be recorded in qc 06 quality assurance test report megger.

Earth fault loop impedance test earth leakage test for lv distribution board shall be done recorded in prescribed format. Case 1 is only interconnecting cable between upstream and downstream panels e g. Carry out 500v megger test for phase to earth neutral to earth phase to neutral and phase to phase to measure the insulation resistance with all breakers in on positions. Some electrical panel test procedures for ensuring the effectiveness of the different elements in the panel and their joint operation are the following.

Refer appendix b test circuit of insulation test. Ideally this is normal operating load. Check the electrical operation of the switchgear using the schemes. As a main protection element the testing of the relay performance and settings is always included in any panel test.

Refer appendix a form 06. Conduct electrical tests on circuit breakers in accordance with ansi neta section 7.