COMPREHENSIVE MAINTENANCE OF HT VCBS DEHYDRATION OF TRANSFORMER OIL AND MAINTENANCE HT DISTRIBUTION NETWORKS AT NAMKUM AND LPH AREA UNDER GE RANCHI

Amount

Supply & fix in replacement of current Transformer , CT : Ratio : 200-100/ 5-5A. CORE - 1 :15 VA CLASS : 1. CORE- 2 :15VA CLASS 5P10. STC : 13:1KA 1 Sec. ILV : 12KV/28/75 KVP. SYSTEM VOLTAGE : 12KV. TYPE ; EPOXY RESIN CAST As Per IS -2705 .IEC- 60044 , suitable for Indoor VCB including proper Connection to BusBar and connecting with electric system such as Control Panel Complete all as directed Shown by Engr-in-Charge. (Make- CG, Kappa, Laxmi or equivalent as approved by the GE).

Supply & fix in replacement of current Transformer , CT : Ratio : 100-50/ 5-5A. CORE - 1 :15 VA CLASS : 1. CORE- 2 :15VA CLASS 5P10. STC : 13:1KA 1 Sec. ILV : 12KV/28/75 KVP. SYSTEM VOLTAGE : 12KV. TYPE ; EPOXY RESIN CAST As Per IS -2705 .IEC- 60044 , suitable for Indoor VCB including proper Connection to BusBar and connecting with electric system such as Control Panel Complete all as directed Shown by Engr-in-Charge. (Make- CG, Kappa, Laxmi or equivalent as approved by the GE).

Supply & fix in replacement HRC fuses 16 Amps capacity complete all as specified and as directed. Make:- HPL, AE

Supply & fix in replacement of HV rectifire operating Aux 30/110 volt AC/DC with NO NC complete all as specified and as directed. Make:- AREVA

Supply & fix in replacement, testing and commissioning plug in trip circuit supervision relay suitable for operation on 110 volts, as per sample complete all as specified and as directed. Make OEM

Supply & fix in replacement of 220 Volt AC/ DC Motor 500 Watt suitable for VCB of make complete all as specified and as directed. Make AREVA, SCHNEIDER

Supply & fix in replacement of Hooter complete all as specified and as directed.

Supply & fix in replacement of LED indicator lamp complete all as specified and as directed. Make:- HPL, AE

Supply & fix in replacement of closing coil complete all as specified and as directed. Make . AREVA, SCHNEIDER

Supply & fix in replacement of connector complete all as specified and as directed.

Supply & fix in replacement of heater with thermostate complete all as specified and as directed. Make . AREVA, SCHNEIDER

M&L for Testing of 33/11 KV Panels and Breakers load test, off load test, over current test, trip test, earth fault test complete all as specified and as directed.

S&F in replacement of Feeder protection relay with 3 Over current and one earth fault protection type Make : Schnider Model - MICOM P-111 .with indications of trip, alarm, Warning and Healthy .

Disconnecting and Strip opening transformer 63 KVA to 100 KVA, 11 KV/433 volts indoor /outdoor type of any make after unscrewing nuts /bolts, screws and connected accessories such as breather conservator tank, temperature gauge for replacement of defective HT /LT coils ,defective parts (payment of defective parts to be replaced shall be measured and paid separately), reassembling after replacing the defective coils /defective parts and replacing the top gasket sheet and other insulating packing materials and testing complete all as specified and directed including taking out, handling of distribution transformer of any size any capacity to workshop & back to the installation. (Note :- The reassembling element covers the assembling of parts not to be changed whereas for the rest it shall be the part of the item being replaced.) (Cost of transportation of transformer is deemed to be included in rate)

Description same as per srl item No. 14 here-in-before but 150 KVA to 500 KVA complete all as specified and directed.

M&L rewinding of transformer of any capacity HT/LT coils using the same gauge of super enameled copper winding wire and replacing the old paper tape insulation, necessary insulation packing’s/ paper insulation etc with replacement of crap tape, prosen sheet, silphase brazing rod, HT block, LT block etc are included, complete all as specified and as directed. (Note –The coil replaced shall have same number of turns, gauge, insulation value matching as per manufacture’s design. Measurement shall be made of winding wire consumed.)

Supply and replacement HT 11 KV Bushing Insulator suitable for indoor / outdoor type 25 to 500 KVA transformer complete with brass stud, 3 Nos brass nuts, brass cup/washers and packing gasket complete all as specified and directed.

M&L for Complete testing of 33KV 3.15 MVA transformer consisting of IR value of both HT&LT side earth resistance of all the four earths, dielectric strength of transformer oil etc complete routin test all specified and as directed.

M&L for Complete testing of transformer of 11 KV , capacity 50 to 500 KVA, consisting of IR value of both HT&LT side earth resistance of all the four earths, dielectric strength of transformer oil etc complete all specified and as directed.

Supply and replacement brass stud for LT side suitable for transformers 100 to 500 KVA complete all as specified and as directed.

Supply and replacement temperature gauge 0-100 degree Celsius range circular type complete all as specified and directed.

Supply and fill up transformer oil as in topping up/refilling of transformer having dielectric strength not less than 50 KV at 2.5 mm gap conforming to IS-335 by heating up and after filtration complete all as specified and directed.

ON LINE dehydration / filtration with machine (not small filtration portable machine) complete all as directed of transformer pole mounted or platform mounted of any capacity complete all as specified and directed.

OFF LINE dehydration/filtration with Ultra High Vaccum machine (not small filtration portable machine) complete all as directed transformer platform mounted of 33/11KV transformer 3.15 MVA capacity after filtration dielectric strength not less than 60 KV at 2.5 complete all as specified and directed.

Supply and replacement transformer breather complete with silcagel for capacity 50 to 500 KVA transformer complete all as specified and directed.

Supply and replacement transformer breather complete with silcagel for capacity 3.15 MVA transformer complete all as specified and directed.

M & L for Painting of HT steel pole with cross arms, clamp of any length and shape for HT overhead line with single coat of aluminium paint including preparation of the existing surface including marking pole numbers in a Black colour numbering with synthetic enamelled paint and strip marking of THREE BLACK AND THREE YELLOW alternatively from bottom of pole to 90 CM height and providng three nos of Yellow & Black at suitable height complete all as specified and directed.

M&L for preparation of old painted steel surface 4 pole steel structure in switch yard above GL/coping including cross arms channels,flat iron clamps in HT OH line by scrapping with wire brush and applying one coats of aluminium paint including all as specified and directed at site.

M&L for preparation of old painted steel surface 2 pole steel structure in switch yard above GL/coping including cross arms channels,flat iron clamps in HT OH line by scrapping with wire brush and applying one coats of aluminium paint including all as specified and directed at site.

RASAM ENGINEERING COMPANY