138WE/L-02/2026-27

Disconnection of transformer 250 KVA from HT and LT side carefully after taking proper safety measures and shifting the same in MES store as directed by Engr-in-Charge with proper T&P and vehicles complete all as specified and/or as directed by Engr-in-Charge.

Dismantling of ACSR or AAC conductors complete all as specified and/or as directed by Engr-in-Charge.

Dismantling cross-arms of M.S. channel or angle sections etc. complete and setting aside complete all as specified and/or as directed by Engr-in-Charge.

Dismantling insulators any type, any size complete all as specified and/or as directed by Engr-in-Charge.

Dismantling stay assembly complete all as specified and/or as directed by Engr-in-Charge.

Dismantling earth wire or copper conductor, service feeder or distributor span complete all as specified and/or as directed by Engr-in-Charge.

Dismantling steel poles/ struts, any size complete all as specified and/or as directed by Engr-in-Charge.

Dismantling air break gang operated switches vertical/ horizontal mounted including insulators and operating mechanism complete all as specified and/or as directed by Engr-in-Charge.

Supply, installation, testing and commissioning of step down trasformer 11/0.433 KV capacity 630 KVA, level III, IS 1180 Part-l, outdoor type copper wound 3 Phase, 4 wire, 50 cycles as per second, oil immersed naturally cooled external cooling tube core type delta connection on primary side (HV side) and star connection on secondary side (LV side) having tapping 0, + 2.5%, +5%, + 7.5% to be charged by means of hand operated, off load/ tap changing gear including first filling of new transformer oil of dielectric strength not less than 60 KV with standard fitting such as two earthing terminals for body and one additional for neutral brought out in bushing, oil level gauge indicator for level minimum and maximum, lifting lugs, rating and terminal plate, plain breather device to prevent ingress of rain water and inserts, drain cum sampling valve 20mm bore steel with plug, dial type thermometer, oil filling hole 32mm threaded with plug. The transformer shall be powder coated for water/ dust and vermin proof. Note- (1) Transformer Oil shall be confirming to requirement of IS-335-1983 specification for new insulating oil for transformers. (2) Equipment shall be suitable to operate at 4200 Mtr above MSL at temperature variation between (-) 35 degree centigrade to (+) 35 degree centigrade complete all as specified or as directed.

Supply and fix HT 11 KV, out door type gang operated air-break switch suitable for horizontal or vertical mounting fixed type complete with 9 insulators of rating up to 200 Amps complete including taking down u/s air break switch all as specified and/or directed by the Engr-in-Charge.