Testing, Maintenance & Engineering ServicesTesting, Maintenance & Engineering Service / By admin Resistance of closing & tripping coil. Testing of HT & LT Switchgear panels, transformer, Motors, Busducts, Cables, etc. Testing &maintenance of switchyard equipment’s like Power transformers, CT, PT, LA, Circuit breakers, isolators, etc. Testing & maintenance of indoor equipment’s like CT, PT, Relay control panels, PCC, MCC,PMCC, etc. Complete health checkup and maintenance of indoor & outdoor switchgear panels. Testing of REF, Differential (transformer, Cable, Bus-bar, Generator), Changeover and other protection Schemes. Retrofitting of relays (Electromechanical to numerical Relays).Earth pit & Earth grid resistance measurement.