Maintenance & Testing UPTO 220 KV 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


- 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.


- 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.
- 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
We carry out following tests on transformers during maintenance & commissioning.
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

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

- 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

- 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

- 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

- 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
- Primary Injection Kit.
- Secondary Injection Kit.
- High Voltage Tester(AC/DC).