Services & Solutions

Gas Expander

Workshop Activities

Mechanical

  • Re-blading of turbine rotors.
  • Removal through machining & re-fitting of labyrinth strips by pneumatic caulking.
  • Manufacture of critical turbine components.
  • Grinding of journal areas
  • Machining of large rotor shafts up to 4000 mm in length & maximum diameter of 1130 mm.
  • Manufacture & relining of white metal bearings – Refer our Products section
  • Re-engineering activities of critical components.

Electrical

  • Manufacture of HT & LT Panels using ABB/Siemens/Schneider vacuum circuit breakers
  • Insulation resistance & winding resistance of all windings of generator :
    • Generator stator : For 11 KV set with 5 KV insulation tester (Megger) with PI measurement.
    • Generator rotor, exciter armature & exciter field.
  • Voltage control function testing in AVR.
  • Protection testing – Testing of single phase current & voltage operated relays. Testing of relays as follows :
    • Over current relay / Earth fault relay / Differential relay / Over voltage relay /Under voltage relay /Reverse power relay
    • Current operated negative phase sequence relay
    • Important circuit & component resistance test like current circuits, CTs, PTs.