e-tender for supply of maintenance material-- 1 computer items : 2 11 kv do fuse elements 5 amp (make:- gew/sealko/ajanta/veer or equivalent) 3 11 kv do fuse elements 10 amp(make:- gew/sealko/ajanta/veer or equivalent) 4 11 kv do fuse elements 15 amp(make:- gew/sealko/ajanta/veer or equivalent) 5 silica gel silica gel required for power & distribution transformer shall be conforming to iss 3401/1992 with its latest amendments.the material shall be solid with grainy porous structure free from extraneous impurities. the indicating type gel should be odorless, non-toxic & non corrosive with stable chemical and thermal characteristics. the inter connected pores from a vast surface area; silica gel should absorb moisture 40% or more of its weight at 100% humidity.bulk density: the bulk density of the material shall be more than 0.6 gm./ml. particle size & colour: the material shall be blue in colour and its size should be from 9 to 12 mm.loss on drying: the material when tested according to the method prescribed in iss shall not lose more than 5% of its mass.absorption capacity:the material when tested according to the method prescribed in iss 3401-1992 shall absorb minimum 27% of moisture on the basis of its mass.ph value: the ph of aqueous extract of the material when determined by the method prescribed in iss 3401-1992 shall not be more than 8 and not less than 3.5.loss on attrition:-when subjected to the test according to the method prescribed in aforesaid iss not more than 2.5% of the material shall pass through the sieve.chemical requirement: the gel shall also comply with the requirement prescribed in the iss 3401-1992 6 40 amp do fuse for capacitor bank 7 trip coil 30 volts dc,copper wire , shunt suitable for bhelspecifications: operating voltage : 30v dc coil resistance : 4.3 o bobbin – outer diameter : 42mm inner diameter : 16mm (with brass tube) length : 93mm brass tube length : 98 plunger length : 140mm copper wound and varnished with 0.25 meter insulated pvc 1.0 sqmm wireweigth:1) coil : 505gms 2) plunger : 126 gms 3) minimum overall weight of coil : 965 gms 8 trip coil 30 volts dc,copper wire , shunt suitable for shreemspecifications:-operating voltage : 30v dccoil resistance : 1.9 ?bobbin-outer diameter : 51mminner diameter : 26mmheight : 51mmcopper woundwith 0.5 meters insulated pvc 1.5 sqmm wire minimum overall weight of coil : 395gms 9 closing coil 30 volts dc,copper wire , shunt suitable for schneiderspecifications:-operating voltage : 30v dcbobbin-outer diameter : 35mminner diameter : 26mmheight : 45mmcopper woundwith 0.25 meters insulated pvc 1.5 sqmm wire 10 bimetallic clamp suitable for 20mm dia stud lt side suitable for 200 & 315 kva dtrsbimettallic clamps shall be of aluminum and brass. the purpose of the connecting together two dissimila materials for preventing electrolytic corrosion. bimetallic clamps should conform to is-5082/1998. the connector shall be smooth and free from cavities, blow holes. the finish should be natural and free from flaws, rust, crevices, cracks & other defects harmful for the joints. the temperature rise of bimetallic clamp above a reference ambient temperature of 400 c when carrying rated current shall not exceed 450 c. the bolts should be of galvanized mild steel. the tensile strength shall be 60 mpa (min).dimension shall be as given in the drawing enclosed alongwith tender document 11 bimetallic clamps for power transformer. specifications:-brass pad size: 50x50x10mmhole diameter: 20mmaluminum pad connector suitable for dogconnector with 6nos. m10 gi coated nut, bolts,washer and spring washersoverall length : 170mmtotal weight : 650 grams, tolerance ± 5% 12 tong tester current range:- 0-20 amps - 200 amps - 1000 ampsvoltage range:- 0-750 volt - 1000 voltmake:- mastech/meco/motwane or equivalent