REPAIR MAINT OF POWER TRANSFORMERS OF CAPACITY 2.0 MVA AT 33KV SUB STATION UNDER GE I KANPUR

Amount

EnM Schedule

Disconnection of transformer of capacity 2.0 MVA outdoor type 33/11/6.6 KV from LV/HV side including earthing GI strips and other DC sources, control wiring for , Relays, protection, metering etc and taking down transformer from plinth with the help of crane for all as specified and directed . Note : The rate deemed to be included of all tools and plants.

Transportation of Transformer from site E/M yard to workshop for repairing and from workshop to site /E/M yard after repair etc of capacity 2.0 MVA all as specified and directed . NOTE : The rate deemed to be included of transportation charges.

Material and labour for draining out transformer oil from the transformer of cap 2.0 MVA out door in a clean barrel and disconnection of internal electrical connection by taking out the top cover complete, cleaning of tank, removal of sludge, scrapping existing paint coat and applying chemical based painting etc all as specified and directed . Note : The rate deemed to be included of all tools and plants.

Material and labour for dismantling of complete HV/LV coils of transformer of cap 2.0 MVA (33/11/6.6 KV) and segregating, serviceable and unserviceable coils, serviceable coils shall kept aside for reuse after complete varnishing and testing of each coil including removal of complete core and accessories such as HV / LV bushings with metal parts, oil temp indicator ,winding temp indicator and disconnection of OTI, WTI all as specified and directed . Note : 1. Rewinding of defective HV / LV Coils shall be measured and paid seperately. 2. The rate deemed to be included of all tools and plants.

M&L for taking out old burnt winding and rewinding of HV/LV coils of transformer of cap 2.0 MVA (33/11/6.6 KV) by paper insulated electrolytic high conductivity copper winding wire/strip of existing gauge and size complete all as specified and directed.

Material and labour for assembling ,yoke fitting, assembling of LV coils in completely intact position over the CRGO laminated core, the HT coils shall be fixed over the LV coils by providing the insulation barriers and make the assembly complete in intact position (insulation material & CRGO laminated core shall be measured and paid separately) including assembling of core on mounting channel for the transformer of capacity 2.0 MVA (33/11/6.6 kv) all as specified and directed .

M&L for connecting all the internal connection, soldering, brazing of HV/LV connections by silver electrodes including replacement of leads complete by providing tubular insulation of tap changer assembly and its connections and tanking of complete assembly in tank with suitable locking arrangements anf re-fixing the top cover of transformer including the other accessories such as ,OTI,WTI , and connecting with protection system and making the transformer absolute leak proof for 2.0 MVA (33/11/6.6 KV) transformer all as specified and directed by Engineer-in-Charge Note- The windings and connections of all transformers shall be braced to withstand shocks which may occur during transport or due to switching and other transport condition during service. Coil clamping rings, if provided shall be of steel. Any metal pieces in contact with laminated rings shall be so designed and secured that they do not weaken the electrical or the mechanical properties of the rings. If the transformer winding is built up of section of disc coils, separated by spacers, the clamping arrangements shall be such that equal pressure are applied to all columns of spacers. All such spacers shall be securely located, shall be of suitable material and shall receive adequate shrinkage treatment before assembly.

M&L for cleaning the conservator assembly & cooling fins by removing sludge clogging material with the help of air blast complete including re-fixing of conservator & cooling fins in original position with nuts, bolts washer, for 2.0 MVA transformer all as specified and directed .

Dismantling and taking down breather assembly for 2 MVA capacity and size and replacement of breather to the transformer and filling of fresh Silica Jel all as specified and directed .

S/F cork sheet gaskit cut to shape for the top covers, radiator valves, conservator assembly bucolz and other required places of the transformer of capacity 2.0 MVA 33/11/6.6 KVcomplete all as specified and directed.

Material and labour for ovening of complete assembly including HV/LV coils of transformer 2.0 MVA in oven for at least 72 Hrs for achieving desired insulation value and complete removal of assembly (Note re-ovening shall be done if the desired result was not found with out any extra cost) all as specified and directed by Engineer-in-Charge

Supply and fixing insulation material PCB electrical grade such as barriers, coil to coil insulation block & rings insulation cylinders, ebonite sleeves etc for 2 MVA transformer all as specified and directed by Engineer-in-Charge

S & F in replacement of Marshelling box (as per existing size at site) of 2 MVA Transformer including disconnecting & dismantling the existing control wiring and Oil Temperature Indicator (OTI) & Winding Temperature Indicator (WTI) and reconnect all the control wiring with OTI & WTI and testing complete all as specified and directed.

S & F in replacement of Oil Temperature Indicator (OTI) for Power Transformer 33/11/6.6 KV with all connected accessories all as specified and directed

S & F in replacement of Winding Temperature Indicator (WTI) for Power Transformer 33/11/6.6 KV with all connected accessories all as specified and directed

Dismantling old u/s HT 33/11/6.6 KV bushes and fixing in replacement of HT Bushes porcelain, vitreous with brass spindle, threaded with washer, nuts, lock, rubber seals and insulators suitable for transformer of capacity 2.0/3.15 MVA.

M&L for filling transformer 2.0MVA in with new transformer oil low viscosity of approved make as per IS-335 (latest amended) including heating of oil and die-electric strength 50 KV when tested at 4mm gap all as specified. Make of transformer oil : APAR (POWER OIL) / CASTROL Note :- Test certificate along with invoice of original manufacture of transformer oil as per IS:335 (latest amended) to be provided.

M & L Installation, commissioning, testing of 2.0 MVA transformer by connecting all HT 33/11/6.6 KV connections, earthing connections, control cables for various protections, indications, metering, connection and bezels connections and testing all as specified and directed .

M&L for cleaning of surface of transformer of capacity 2.0 MVA by scrapping out old paint and painting of transformer by two coats of synthetic enamel gray paint externally including writing of SM/MES No on the transformer complete all as specified and directed .

Note applicable for complete work : (i) The rate quoted shall be deemed to be included the cost of minor items/fittings which are not listed in this schedule but essentially/technically required to be replaced during repair work for proper function of transformer. The decision of Accepting officer is final and binding in case any dispute arises to decide whether items are constitute minor or not. (ii) A rep of Accepting officer will inspect the workshop for testing of transformer before taking out from workshop for fixing to the location.

SHIVALIK ENGINEERING WORKS

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