Public Works Department Tender

Maintenance in Substation -MCH Vandanam

OD162321/2023-2024:Charges towards service and maintenance including regular service of ACB - Overhauling service of U power ACB including Cleaning of breaker with CRC, Removal of old grease and re-greasing the same with recommended grease, Checking the condition of arcing contact and gap between fixed and moving arcing contacts, Checking the reset mechanism and tripping of breaker through push button, Checking and adjust freeness of release trip rod, Checking presence and proper tightening of hardware, Checking presence of all circlips, Checking condition and alignment of Jaw contact with cradle terminals, Checking condition of ACB wiring and replace if required, Checking and adjusting gap between hilum sheet and side plate, Checking proper closing of all poles together, Checking working of anti pumping device in case of EDO ACB, Checking arc chutes Conditions, Checking U/V releases. Checking ACB tripping through shunt release, Checking motor operation in case of EDO ACB, Checking closing coil operation in case of EDO ACB, Checking continuity and proper changeover of auxiliary contact block, Setting of Protection Release as per the load/Customer Request, Checking healthiness of CTs, Testing of Protection Release With L&T Approved Test Kit, Dismantling and Reassembling of Main Mechanism Parts, If Required

OD162323/2023-2024:Charges towards service and maintenance of 1000 KVA USS Transformer and 800A 3P VCB - a) Checking dust accumulation, Checking cover louvers, screens, and internal coil cooling ducts, vacuum out the dust , clean the transformer with brush or lint-free rag , In inaccessible areas blow dry air into the unit, Checking the ventilation, Clean cooling fans, Inspect insulation surfaces for any discoloration or signs of heat damage, Checking Isolation dampeners. b)VCB- Cleaning of breaker with CRC -226, Removal of old grease and re-greasing the same with recommended grease, Checking the reset mechanism and tripping of breaker through push button, Checking presence and proper tightening of hardware, Checking presence of all circlips, Checking condition and alignment of Jaw contact with cradle terminals, Checking condition of VCB wiring, Checking working of anti pumping device in case of EDO VCB, Checking scrapping earth alignment, Checking Closing Release, Checking VCB tripping through shunt release, Checking motor operation in case of EDO VCB, Checking continuity and proper changeover of auxiliary contact block, Checking of Insulation Resistance between phase to phase & Earth by 5kv megger, Lubrication of Jaw contact with Lycom Grease