Test & Commissioning
Test and commissioning are the process of assuring that all systems and components of a building or industrial plant are designed, installed, tested, operated, and maintained according to the operational requirements of the owner or final client.
What We Do
1. Transformer tests like:
- Insulation resistance Test.
- Winding resistance Test.
- Turns Ration / Voltage ratio Test
- Polarity / Vector group Test.
- No-load losses and current Test.
- Short-circuit impedance and load loss Test.
- Continuity Test.
- Magnetizing Current Test.
- Magnetic Balance Test.
- High Voltage Test.
- Dielectric tests (Separate source AC voltage/ Induced overvoltage/ Lightning impulse tests).
- Test on On-load tap changers, where appropriate.
- Dielectric special tests.
- Zero-sequence impedance on three-phase transformers.
- Short-circuit test.
- Harmonics on the no-load current.
- Power taken by fan and oil-pump motors.
- Determination of sound levels.
- Determination of capacitances between windings and earth, and between windings.
- Determination of transient voltage transfer between windings.
- Tests intended to be repeated in the field to confirm no damage during shipment, for example Frequency Response Analysis.
2. Protection Relay test
- Testing Overvoltage (59) Protection
- Under-voltage (27) Protection Testing
- Over/Under Frequency (81) Protection Testing
- Instantaneous Over-current (50) Element Testing
- Time Over-current (51) Element Testing
- Directional Over-current (67) Element Testing
- Simple Percent Differential (87) Element Testing
- Percent Differential (87) Element Testing
- Unrestrained-Differential Testing
- Line Distance (21) Element Testing
3. Protection Relay End-to-End Testing
perform end to end testing
- Line Differential
- Pilot Wire Protection
- Phase/Charge Comparison Protection
- Direct Transfer Trip (DTT) Scheme
- Direct Under-Reaching Transfer Trip (DUTT)
- Permissive Over-Reaching Transfer Trip (POTT)
- Directional Comparison Unblocking (DCUB)
- Directional Comparison Unblocking (DCUB)
- Directional Comparison Blocking (DCB)
4. insulation tests for all kinds of device and equipment
Our solutions
Our Start-up and Commissioning solution includes: