Technical proposal_Automatic PT&CT Test Bench_Allen

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Ability

1. To suitable of the capacity of 63000kVA, 110kV and below the oil-immersed transformer (including S9 S11 S13 and amorphous alloy transformer);
2. To suitable of the capacity of 31500kVA, 35kV and below dry-type transformers;
3. Mine explosion-proof transformers that can meet capacity of 6300kVA, 10kV and below;
4. Special transformer (need to inform detailed capacity and voltage level when ordering).

Function

1. transformer winding resistance test
2. Transformer voltage ratio measurement and connection group number test
3. transformer no-load current (%) and no-load loss test
4. Transformer short circuit impedance (%) and load loss test
5. Transformer power frequency applied pressure test
6. Transformer induced withstand voltage test

Extensible test project

1. Transformer partial discharge test
2. No-load harmonic test (0-31th harmonic)
3. Withstand voltage test of transformer oil (0-80kV)
4. Transformer temperature rise test (can automatically draw temperature rise curve)
5. Insulation resistance test (absorption ratio and polarization index)
6. Transformer anti-interference dielectric loss test
7. Lightning impact test.

Performance Feature

Tested transformer parameters

1. Transformer capacity under test (to meet temperature rise test condition, dry type transformer)
   10kV level ≤2500kVA, 35kV level ≤6300kVA
2. Tested transformer voltage level below 35kV on primary side

Accuracy

1. Voltage Range 0-22kV
2. Current Range 0-400A
3. Minimum voltage resolution 0.001V* PT ratio
4. Minimum current resolution 0.0001A*CT ratio
5. Power Minimum Resolution 0.1W*PT Ratio*CT Ratio