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FAT Procedure for LV Switchboards
FAT Procedure for LV Switchboards (photo credit: exellpower.com)

Factory Acceptance Test (FAT) procedure

Visual Inspection Test

Visual inspection with customer will be carried out on the LV switchboard to:

  • Check the layout of fitted components
  • Check the over all dimension of switchboard, size of busbars, cables and earthing conductors and location of feeder entry point.
  • Check and verify the brand, model, and circuit identification of components installed such as breakers, current transformers, fuses, ammeters, voltmeters, power meters and protection relays etc.
  • Check overall paint work, door locking device, door gasket, door hinges, door cut-out holes
  • Check the busbar and cable tightening, the marking, busbar clearance, base angle bar and plinth
  • Check the labels, name plate and phase identification

The customer comments will be recorded in “QC-03 Customer Inspection“.

High-Voltage flash tester
High-Voltage flash tester

Insulation Test

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.

All reading will be recorded in “QC-06 Quality Assurance Test Report – Megger”. Refer Appendix A – Form 06. Refer Appendix B – Test Circuit of Insulation Test.


High Voltage Injection Test

Carry out 500V Megger test between each stressed phase and all other phase connected to exposed conductive parts with all breakers in ‘ON’ positions.

Apply 2.5kV AC voltage between each stressed phase and all other phase connected to exposed conductive parts for 60 seconds and measure the leakage current.

To repeat the test mentioned – All reading will be recorded in “QC-06 Quality Assurance Test Report – Megger”. Refer Appendix A – Form 06. Refer Appendix B – Test Circuit of High Voltage Injection Test.

Title:Factory acceptance test (FAT) Procedure of LV Switchboards – Sunlight Electrical
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Factory acceptance test (FAT) Procedure of LV Switchboards - Sunlight Electrical
Factory acceptance test (FAT) Procedure of LV Switchboards – Sunlight Electrical

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Page edited by E.C. (Google).

5 Comments


  1. Jonathan
    Apr 08, 2016

    Hi there, just a quick question. For the high voltage injection test, after the 2.5kV AC voltage for 60 seconds is applied and leakage current measured, is there a maximum leakage current limit to comply with? How much current leakage would be deemed unsafe?

    Thanks.


  2. V k arora
    Mar 03, 2016

    I want to know the test to be made at FAT forPLC SCADA panel with CPU

  3. […] any other engineered system, factory testing for an automatic transfer system is no substitute for field testing. Field testing takes into […]


  4. Abbas
    Jul 05, 2015

    Thanks

  5. […] circuit-breaker,Can be extended to several consecutive devices, even if they are used in different switchboards.The installation standards (IEC 60364) stipulate that the upstream device must have an ultimate […]

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