REPAIR MAINT AND REPLACEMENT OF HT OH LINE HT UG CABLES, HT VCBS, HT OCBS and OTHER CONNECTED WORKS AT DEFENCE LAB JODHPUR

Preventive maintenance of 33 / 11 KV switch yard by visual inspection /oiling greasing / test of all equipment installed in swtich yard including rectification of circuit problem / fault (Detail of installation/equipment at 33 KV Yard at defence lab are as under :-) (a) 3.15 MVA Power Transformer – 02 No, (b) 33 KV Line/Cable (c) Current Transformer (d) Potential Transformer, (e) Isolator, (f) Surge Arrestors, (g) Protection system, (h) Earthings. Note:- (a) Preventive maintenance (Qtrly) shall be carried out through Approved Agency Authorised vender having 33 KV lincese and contractor shall submit documentry evidence to Engineer-in-Charge. (b) Necessary Shutdown from JDVVNL/MES shall be obtained by the contractor if required. (c) Contractor shall submit test result of all equipments after completion of maintinance for Qtrly dully signed by the authorised vender (d) Contractor shall submit Test reports of complete 33/11 switchyard after completion of maintinance for qtrly sepertaly dully signed by the authorised vender. (e) Contractor shall be sumit the earthing test results Qtrly basis (f) Quoted Rates shall be deemed to include of minor consumable items, i.e Nuts bolts, wires, fuses,PVC tapes, Welding Job, cotton waste & cleaning clothes, petroleum jelly, grease, lubricating oil, emery paper, T & P items etc. complete all as specified and directed by Engineer-in-Charge.

Maintenance and complete overhauling /Calibration of 11 KV VCB/RMU rating upto 800 Amp suitable for repturing capacity 350 MVA and remote control switch including dismantling of operating mechanism parts, well cleaning with petrol & CRC-226 and replacing moving parts including reassembling of parts after well cleaning of complete panel board, main bus bar, de-carbonizing all joints bus bar, CTs & PTs and spouts metal parts and making VCB perfect operating in manual and electric mode including all routine and preventive maintenance complete all as specified and directed by Engineer-in-Charge. Notes: (i) Spare parts required for replacement suitable capacity shall be measured and paid separately under respective items of BOQ. (ii) Calibration shall be done by authorised service technician/engineer and test report shall be submit accordingly. (iii) Single RMU each breaker / VCB shall be considered as one Job

Supply and fix in replacement of microprocessor based relay of IDMT relay including testing, setting of relay for proper tripping according to load complete all as specified and directed by Engineer-in-Charge. Note : 1. Calibration certificate from competent protection team will be submitted by contractor. 2. Rates are deemed to include synchronisation of protection relay with main incoming 33 KV electric supply from JVVNL i.e. Co- ordination of power system incl setting of 11 KV in coming and out going circuits enabling the system to respond quickly for arresting the tripping to particular outgoing circuit. the job may include liaison with JVVNL for acquiring the tech data relative to relay/CT setting to achieve desired Co-ordination of the system all as directed at site and to the entire satisfaction of Engr in charge. Rates are also deemed to include synchronisation of 33 KV and 11 KV VCB's again after 3 months of job completed. A certificate in this regard to be submitted by the contractor in each case. 3. All Test equepments/T&P reqd for carry out calibration of relays etc should be deemed to be included in quoted rates.

Supply and fix in replacement of terminal bushing assembly (spout bushing) 11 KV VCB complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of Tulip contact (isolating contact 630 A) 11 KV VCB/RMU complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of circuit spout RYB (bus bar insulators) 61 mm for 11 KV VCB complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of loading spring and main link for 11 KV VCB complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of spring charging gear for 11 KV VCB/RMU complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of comman oprating shaft for 11 KV VCB/RMU complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of trip shaft for 11 KV VCB/RMU complete all as specified and directed by Engineer-in-Charge.