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Erection, Testing & Commissioning of High voltage Equipment’s 6.6kV to 400kV Substation

Major Equipment’s:-

5MVA to 200MVA Power Transformers

VCB & SF6 Circuit Breaker 11kV to 400kV

Capacitive Voltage Transformer 11kV to 400kV

Current Transformers 11kV to 400kV

Lighting Arrestor 11kV to 400kV

Isolators 11kV to 400kV

LT, HT & EHV Cables (Grade 1.1KV to 400kV)

5MVA to 200MVA Power Transformers

  • Tan-Delta Test of Bushing.
  • Turret CT Testing.
  • Ratio of Turret CT.
  • Polarity of Turret CT.
  • Winding resistance of Turret CT.
  • Insulation Resistance Test of Turret CT & core frame.
  • Sweep Frequency Response Analyzer (SFRA)Test.
  • Tan-Delta Test of Bushing & Winding.
  • Magnetic Core Balance Test.
  • Magnetic Current Test.
  • Short Circuit Impedance Test.
  • Vector Group Test.
  • Winding Resistance Measurement (WRM) Test.
  • Voltage Ratio Test.
  • Insulation resistance & Polarization Index Test.

VCB & SF6 Circuit Breaker 11kV to 765kV

  • DCRM (Dynamic Contact resistance measurement)
  • Timing Test.
  • Contact Resistance measurement.
  • Insulation Resistance Test.

Capacitive Voltage Transformer 11kV to 765kV

  • Tan- Delta Test.
  • Ratio Test.
  • Polarity Test.
  • Continuity Test.
  • Winding resistance Test.
  • Insulation Resistance Test.

Current Transformers 11kV to 765kV

  • Tan- Delta Test. Ratio Test.
  • Polarity Test. Continuity Test.
  • Winding resistance Test.
  • Insulation Resistance Test.

Potential Transformer

  • Ratio Test.
  • Polarity Test.
  • Continuity Test.
  • Winding resistance Test.
  • Insulation Resistance Test.

Lighting Arrestor 11kV to 765kV

  • Tan- Delta Test.
  • LeakageCurrent Measurement.
  • Insulation Resistance Test.

Isolators 11kV to 765kV

  • Contact Resistance Measurement.
  • Insulation Resistance Test.

33Kv HT Panels

  • Ratio Test of CT & PT.
  • Polarity Test.
  • Continuity Test.
  • Winding resistance Test.
  • Timing Test of CB.
  • Contact Resistance measurement CB.
  • Insulation Resistance Test.
  • Relay Configuration checks.

LT, HT & EHV Cables (Grade 1.1KV to 400kV)

  • Hi-Pot Test.
  • VLF Test.
  • Partial Discharge Test.
  • Insulation Resistance Test.

Testing & Commissioning of Substation- Up to 765kV

  • Visual Inspection: Verify that all equipment (transformers, circuit breakers, busbars, disconnect switches, etc.) is properly installed.

  • Physical Inspection: Check grounding systems, cable trays, and busbar supports.