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Maintenance & Testing UPTO 220 KV <b>SWITCHYARDs

Maintenance & Testing UPTO 220 KV SWITCHYARDs:

Maintenance & Testing UPTO 220 KV <b>SWITCHYARDs
  • Servicing of switchyard equipments like, Isolators, Breakers, PTS, CTS, L.As, etc.
  • Testing of switchyard equipments Transformer, Breakers, PTS, CTS, L.A.S for all standard tests.
  • Measurement of Contact resistance of isolators and winding resistance of power & distribution transformers.
  • IR/PI value Tests, Primary Injection test, measurement of capacitance & tan delta.
  • We also carry out installation of above said equipment.

Maintenance Repair & testing ,commissioning of indoor/outdoor BREAKERS & PANELS

Maintenance Repair & testing ,commissioning of   indoor/outdoor BREAKERS & PANELSMaintenance Repair & testing ,commissioning of   indoor/outdoor BREAKERS & PANELS
  • Installation, servicing, repairs,maintenance & testing of all types of MV & LV Breakers like SF6, MOCB, VCB & ACB
  • Fault finding, rectification of MV, LV panels.(Including MCCBs, Contactors having BMRs)
  • We perform following tests for all types of Breakers.(Whatever applicable)
    • Checking of Mechanical & Electrical operations & interlocks.
    • IR value test.
    • HI-POT test up to 60 KV for DC & up to 50 KV for ACs.
    • Breaker timing.
    • Contact Resistance test.
    • General wiring checks.
    • Wiring modifications.
    • Checking of mechanical & electrical interlocks.
    • MilIvolt drop test on bus bars & bus ducts.
    • Primary injection test & tripping trials.
    • Stability test on differential & REF(Where ever required)

Maintenance, Repair, testing, commissioning of power & distribution TRANSFORMERS.

Maintenance, Repair, testing, commissioning of power & distribution TRANSFORMERS
  • Servicing of all types of transformers, dry type, and oil type up to 220 KV.
  • Checking of hotspots, inside the cable chambers, with contactless thermometer.
  • Checking of cable tightness, Cleaning & sealing the cable box for vermin proofing.
  • Fixing of gaskets, stopping of oil leakages, checking of control wiring & its tightness.
  • We carry out following tests on transformers during maintenance & commissioning.

  • IR & PI value test.
  • Ratio test.
  • Vector group test.
  • Core Balance test.
  • Magnetizing current test.
  • Winding resistance test.
  • RTCC panel testing for ON LOAD TAP CHANGER.
  • Tripping trials by operating Buchholz, WTI, OTI, Oil surge relays.
  • Oil filtration to improve BDV of oil.
  • Oil DGA & Screening test.
  • We also carry out installation of transformers upto 20MVA

RELAYS

RELAYS
  • Measurement of live CT currents, checking of relay wiring & its tightness.
  • Testing of relays by secondary & primary injection and checking of CT wiring.
  • Testing & calibration of all types of relays.
  • Relay programming, Relay setting & scheme checking.
  • We also carry out installation/testing of all types of digital & anolog relays.

CTs & PTs

CTs & PTs
  • IR value test.
  • Polarity test.
  • Ratio check by primary injection.
  • Knee point voltage test (applicable to only CTs).
  • Measurement of secondary winding resistance.

Isolator

Isolator
  • Installation, Maintenance & servicing ofIsolators.
  • Measurement of contact resistance of isolators.
  • IR value check.
  • Checking of mechanical & electrical interlocks.
  • HV test on line & insulators.

Earthing

Earthing
  • Maintenance of existing earth pits.
  • Installation of new earth pits.
  • Testing of earth pits & earth grids with earth meggers & clamp on tester.
  • Repairing & up gradation of earth pits.

Cables & Busducts

Cables & Busducts
  • Cable installation & cable termination of all types of HT, LT & control cables.
  • Testing of cables for IR value & High voltage test up to 60 kV DC & 50kV AC.
  • Checking cable end termination temperature by contactless thermometer& checking tightness by Torque Wrench.

ENERGY METERS, LOAD MANAGERS, KW METERS, TRIVECTOR METERS, P.F. METERS

ENERGY METERS, LOAD MANAGERS, KW METERS, TRIVECTOR METERS, P.F. METERS
  • Calibration of the meters, injecting three phase currents & voltages, using phantom load set.
  • Variation of phase angles using 3 phase phase-shifter.
  • Calculation of errors in comparison with calibrated precision standard meter.
  • We also carry out installation of above said equipments.

Besides all these we also carry out Fault Finding in HT & LT system.

General

General
  • We have all the required calibrated equipments, instruments & tools of our own.
  • Our group of graduate engineers/supervisors/technicians is well experienced & intelligent.
  • We undertake service rate/AMC contracts.
  • We also provide skilled man power, for shutdown & emergency jobs.
  • We also conduct training programmes for electricians & engineers.
  • Training & auditing for electrical safety of plants & machineries
  • Our all manpower is covered under ESIC /Workman compensation policies.
  • We have P.F. registration.
  • We provide quick emergency services during breakdowns & shut downs.


We carryout installations testing & commissioning of HT & LT panel boards, Transformers, Cables, retrofitting work, repairing, modifications.

Supply Of Test Kits

Supply Of Test Kits
  • Primary Injection Kit.
  • Secondary Injection Kit.
  • High Voltage Tester(AC/DC).

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