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Tender For installation of buchholz relay, wti & oti in the primary switch of 1mva, 11kv/3.3kv marson make power transformer at gourangdi(a) colliery, salanpur area.
Tender For corrigendum : spares for power transformer of various ratings - relay,buchholz ,gor3,size-80nb contact rating:the contacts should make,break and carry continuesly 2amps at 250v dc or ac should make carry 10amps for 0.5secs at 250v ac or dc,for power transformers(290mva,16.5kv/235kv), valve,pressure relief ,model-t6, specifications:liquid in tank:t/foil,operating pressure:0.42,0.49,0.56,0.7kgs,operating tolerence:+or-0.07kgs, operating time:instant,valve resetting:automatic, switch resetting:manual, visualindicator resetting:manual, operating temperature:0 to100 deg.c,environment:indoor or outdoor, switch:micro switch dpdt, port opening:150pie nominal,1no,1nc, for power transformers (290mva,16.5kv/235kv), gas collecting device for buckholtz relay,290mva generator transformer (16.5kv/235kv). gauge; type: conservator magnetic oil. for power transformers, (290mva,16.5kv/235kv)
Tender For supply, fixing, commissionig & testing of transformer controlling enclo sure by fixing of auxilary relay 110 vdc, wti, oti, buchholz relay, mog, alarm, annunc iator, controlling wires with all accessories. make- l&t or similar [ warranty period: 30 months after the date of delivery ]
Tender For supply of relay, type: instantaneous earth fail (neutral fail safe relay) , current rating: 5 a, electrical pol , winding temperature indicator(wti) , type: analog, range: 0-120 degree celsius suitable for 5mva, 33/ , oil temperature indicator(oti) , type: analog, range: 0-120 degree celsius suitable for 5mva, 33/3.3k , buchholz relay, with reed switch, nominal pipe bore-60 mm suitable for 5mva, 33/3.3kv transformer , neutral grounding resistor, 424 ohm, 240w for 3.3kv/550v tsu , neutral grounding resistance with control and relay panel with following technical specifications 3.
Tender For supply of fixed contact of gprelay for bhel ac rakes as per metro rly.'s drg no. mr/poh/ac/7-5-089 [ warranty period: 30 months after the date of delivery ]