SPECIAL REPAIR FOR REPLACEMENT OF DISTRIBUTION TRANSFORMERS AGAINST BER IN PH-I UNDER GE(A) JAISALMER AT MIL STN JAISALMER

Amount

Supply, Installation, testing and commissioing of outdoor type step down transformer 100 KVA, 11/0.433 KV, 3 Phase 50 Hz, ONAN Cooled Oil Immersed Copper wound complete with oil tank including first fill of ISI marked insulating oil up to top level, oil level indicater, breather with Silica gel, lifting hooks, drain valve, air vent valve, tackel wheel with channel and locking arrangement to put on the plinth with external cooling tubes, Core type, delta connected on primary side (HV) and star connected on secondary side LV) in accodance with vector symbol DYN-11 (vector Group-4) with neutral brought out on secondary side (LV Side) OFF load tap Changer with mannual voltage regulation 0.433 KV in suitable steps/position on HV side to give output of 0.433 KV on LV side and provision of following accessories and connecting with electrical system, earthing etc. including all jointing materials, all as per IS 1180-2014 and energy efficiency level-II including filling of trasformer oil having confirming to IS : 335-1993 of dyelectric strength more than 50KV and including Dismantling of existing old unserviceable transformer at site by disconnecting HT&LT connections and deposit to E/M store yard including transportation etc and shall comprise of the following accessories as per manufactures direction :- (a) 03 Nos porclain HT bushings with brass/gun metal bushingrods complete with nut and washers on primary(HV) side with arcing horn. (b) 4 Nos porcelain bushings with brass/gun metal bushing rods complete with nut and washers on secondary(LV) side suitable for XLPE LT Cable existing size with connection complete all as specified & directed by Engineer-in - Charge.

Item No. 1.00 Contd (c) Oil conservator with filter typedrain valve and oillevel gauge oil filter hole with caps/plugs and breather assemby. (d) De-hydrating breather with first fill dehydration agent (Silica gel). (e) Explosive vent. (f) Thermometer pocket on tank cover. (g) One No 100MM dia, dial type thermameter, vapour pressure type having range 0-120 degree celsius with metal guard having minimum perimeter reading temperature indicator with resisting device for transformer. (h) Two earthing terminals to be provided diagonally on either side of transformer body to facilitate fixing of 50x6 mm galvanised iron earth strip for body earthing. (j) Name plate and terminal marking. (k) Oil drain filter valve. (l) Lifting lugs. (m) Oil filling hole with cap/plug with conservative tank. (n) Four plain solid cast steel detachable rockters. (o) Provision of 2 Nos danger boards 250/200 mm size made out of 1.6 mm thick plate, viterous enamele white, with letters figures of voltageand conventional skall and benes insignal red colours on frant side. The rear side of the plate also be enamelled. (p) Any other fittings/accessories so as to confirm the whole transformer to 1180 : 2014. (q) Off load changer of range (+) 7.5% to (-) 7.5% instep of 2.5% each, 7 steps.

Supply, Installation, testing and commissioing of outdoor type step down transformer 160 KVA, 11/0.433 KV, 3 Phase 50 Hz, ONAN Cooled Oil Immersed Copper wound complete with oil tank including first fill of ISI marked insulating oil up to top level, oil level indicater, breather with Silica gel, lifting hooks, drain valve, air vent valve, tackel wheel with channel and locking arrangement to put on the plinth with external cooling tubes, Core type, delta connected on primary side (HV) and star connected on secondary side LV) in accodance with vector symbol DYN-11 (vector Group-4) with neutral brought out on secondary side (LV Side) OFF load tap Changer with mannual voltage regulation 0.433 KV in suitable steps/position on HV side to give output of 0.433 KV on LV side and provision of following accessories and connecting with electrical system, earthing etc. including all jointing materials, all as per IS 1180-2014 and energy efficiency level-II including filling of trasformer oil having confirming to IS : 335-1993 of dyelectric strength more than 50KV and including Dismantling of existing old unserviceable transformer at site by disconnecting HT&LT connections and deposit to E/M store yard including transportation etc and shall comprise of the following accessories as per manufactures direction :- (a) 03 Nos porclain HT bushings with brass/gun metal bushingrods complete with nut and washers on primary(HV) side with arcing horn. (b) 4 Nos porcelain bushings with brass/gun metal bushing rods complete with nut and washers on secondary(LV) side suitable for XLPE LT Cable existing size with connection complete all as specified & directed by Engineer-in - Charge. (c) Oil conservator with filter typedrain valve and oillevel gauge oil filter hole with caps/plugs and breather assemby. (d) De-hydrating breather with first fill dehydration agent (Silica gel).

Item No. 2.00 Contd (e) Explosive vent. (f) Thermometer pocket on tank cover. (g) One No 100MM dia, dial type thermameter, vapour pressure type having range 0-120 degree celsius with metal guard having minimum perimeter reading temperature indicator with resisting device for transformer. (h) Two earthing terminals to be provided diagonally on either side of transformer body to facilitate fixing of 50x6 mm galvanised iron earth strip for body earthing. (j) Name plate and terminal marking. (k) Oil drain filter valve. (l) Lifting lugs. (m) Oil filling hole with cap/plug with conservative tank. (n) Four plain solid cast steel detachable rockters. (o) Provision of 2 Nos danger boards 250/200 mm size made out of 1.6 mm thick plate, viterous enamele white, with letters figures of voltageand conventional skall and benes insignal red colours on frant side. The rear side of the plate also be enamelled. (p) Any other fittings/accessories so as to confirm the whole transformer to 1180 : 2014. (q) Off load changer of range (+) 7.5% to (-) 7.5% instep of 2.5% each, 7 steps..

Supply, Installation, testing and commissioing of outdoor type step down transformer 250 KVA, 11/0.433 KV, 3 Phase 50 Hz, ONAN Cooled Oil Immersed Copper wound complete with oil tank including first fill of ISI marked insulating oil up to top level, oil level indicater, breather with Silica gel, lifting hooks, drain valve, air vent valve, tackel wheel with channel and locking arrangement to put on the plinth with external cooling tubes, Core type, delta connected on primary side (HV) and star connected on secondary side LV) in accodance with vector symbol DYN-11 (vector Group-4) with neutral brought out on secondary side (LV Side) OFF load tap Changer with mannual voltage regulation 0.433 KV in suitable steps/position on HV side to give output of 0.433 KV on LV side and provision of following accessories and connecting with electrical system, earthing etc. including all jointing materials, all as per IS 1180-2014 and energy efficiency level-II including filling of trasformer oil having confirming to IS : 335-1993 of dyelectric strength more than 50KV and including Dismantling of existing old unserviceable transformer at site by disconnecting HT&LT connections and deposit to E/M store yard including transportation etc and shall comprise of the following accessories as per manufactures direction :- (a) 03 Nos porclain HT bushings with brass/gun metal bushingrods complete with nut and washers on primary(HV) side with arcing horn. (b) 4 Nos porcelain bushings with brass/gun metal bushing rods complete with nut and washers on secondary(LV) side suitable for XLPE LT Cable existing size with connection complete all as specified & directed by Engineer-in - Charge. (c) Oil conservator with filter typedrain valve and oillevel gauge oil filter hole with caps/plugs and breather assemby. (d) De-hydrating breather with first fill dehydration agent (Silica gel).

Item No. 3.00 Contd (e) Explosive vent. (f) Thermometer pocket on tank cover. (g) One No 100MM dia, dial type thermameter, vapour pressure type having range 0-120 degree celsius with metal guard having minimum perimeter reading temperature indicator with resisting device for transformer. (h) Two earthing terminals to be provided diagonally on either side of transformer body to facilitate fixing of 50x6 mm galvanised iron earth strip for body earthing. (j) Name plate and terminal marking. (k) Oil drain filter valve. (l) Lifting lugs. (m) Oil filling hole with cap/plug with conservative tank. (n) Four plain solid cast steel detachable rockters. (o) Provision of 2 Nos danger boards 250/200 mm size made out of 1.6 mm thick plate, viterous enamele white, with letters figures of voltageand conventional skall and benes insignal red colours on frant side. The rear side of the plate also be enamelled. (p) Any other fittings/accessories so as to confirm the whole transformer to 1180 : 2014. (q) Off load changer of range (+) 7.5% to (-) 7.5% instep of 2.5% each, 7 steps.

Note for Item Nos. 1.00 to 3.00 (i). Anything missed out above but technically required for efficient working of transformer is deemed to be included in quoted rates. (ii). Transformer losses shall be within the tolerance limits as specified in IS- 1180:2014

M&L bore earthing not less than 250 mm dia 16 feet deep filled with black soil up to 7 feet from bottom complete with galvanized iron pipe 40 mm bore medium grade 3 meter long tapers at bottom & provided 12 mm holes (staggered) at 75 mm centre to centre up to 2.5 meter of length from bottom , burried directly in ground filled with 45 cm alternate layer of chemical magnisium sulphate & salt up to ground level connected to galvanized iron strip 25 x 3mm as earthing lead by means of bolt and nut, check nuts and washer of galvanized iron or steel including brazing work and 40mm dia light grade pipe for earth lead protection including all necessary earth work, excavation, earth chamber with PCC 1:3:6, type C1 and RCC chamber cover of PCC 1:2:4 with handle and 20mm dia GI watering pipe with funnel and wire mesh etc and testing on complete all as specified and directed by Engr-in-charge.

SHISHODIA ENTERPRISES (BID ID -3163447)

M/S YOGANSH CONSTRUCTION CO. (BID ID -3164509)

Rasam Engg Co. (BID ID -3163307)

SANJOLI CONSTRUCTION COMPANY (BID ID -3162270)

SHOBHIT BUILDERS (BID ID -3164186)

Shiv Enterprises (BID ID -3164112)

SHREE BHAGWATI ENTERPRISES (BID ID -3164523)

Anil Builders (BID ID -3163469)

M/s Rohit Construction Co. (BID ID -3163894)

M/S Tanisha Traders (BID ID -3164319)

Electromech Engineers (BID ID -3163369)