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Tender For supply of "mccb 250a 3 pole mouled case circuit breaker, rated voltage 415v, rated c urrent 250a, 3ph,50hz of minimum 35ka rupturing capacity at 415v 50hz ac with thermal and magnetic o/l.the thermal o/l setting shal be vatriable covering a minimum range of 200 to 250a. the mccb shall be confirming to is: 13947 part ii (latest revision). ]
Tender For " thermal magnetic motor circuit breaker 3ph, 415v, rated current 32a, dut y ac3, current setting shall be 22- 32a with 32 mm din rail mounting facility, single phas e preventing thermal overload & short circuit magnetic release protection, potential free 1no + 1nc auxiliary contacts rated for 4a, at ac15 duty in assembled condition. co nfirming is:13947/iec:60947 latest. warranty: 18 months from the date of supply ir 12 mo nths from the dte of installation.note: 1.make offered shall be indicated. 2.only manuf acturers/authorised dealers shall quote. [ warranty period: 12 months after the date of del ivery ]
Tender For testing and calibration of different electrical equipment related to ht installation (vcb, transformers, starters, motors, protective relay etc.) at chhal ocm , secl, raigarh area . - item description, testing & calibration of protective relay ( idmt/overhead relay, elr, cdg, earth fault relay, no volt relay/master trip relay, under/over voltage relay), testing of 6 nos. 6.6 kv/230v, 25 kva, transformer, 1 no. 1250kva, 33kv/3.3kv transformer and 1 no. 315kva, 3.3kv/440v transformer, this includes magnetizing test, magnetic current test, vector group test, ir/pi test, ratio test, acidity test, as per latest cear field testnote: work also includes prepartion of test report etc., testing of 6.6 kv ht motor, this is include ir/pi test, inductance test asper latest cear flied test, test and calibration of 6.6 kv vacuum circuit breaker panel having 5 nos. panels received from j&k area at chhal ocm sub station and 2 no. field vacuum circuit breaker chhal ocm sub station, 1 no. sf6 circuit breaker dharam sub station, which includes ir test, contact resistance test, close open test, as per latest cear field test, ir/high voltage test of cables, testing & calibration of all other protective/measuring equipments (meggers, lux meter, high voltage detector, multimeter etc.) in mine & surfacenote: work also includes prepartion of sigle line daigram, mine plan, test report etc., test of 6.6 kv overhead lines, which includes ir test of conductor, and post , disc insulator ir test as per latest electricity rule, test of 6.6 kv ht starter panel, which includes ir test, contact resistance test, close open test, as per latest cear field test, total impact of gst for the purpose of ctc
Tender For supply of 100 a protected poles: 4 pole, 18 ka mccb, rated current (in)100a , user value rated opera tional voltage (ue ):415v / 440v ac, rated insulation voltage (uj ):440v ac, rated impulse withstand volta ge (uimp):5 ,kv, rated frequency:50 hz, rated short-circuit capacity (lcn):18 ka, instantaneous tripping cur rent: c-type, each circuit-breaker shall be marked as per is 60947.2.2003, protection type - l for overload p rotection (thermal) & i for short-circuit protection (magnetic), adjustable thermal-magnetic trip and protecti on unit, fixed magnetic settings and with toggle control. [ warranty period: 30 months after the date of d elivery ]