SPECIAL REPAIR / REPLACEMENT OF 250 KVA TRANSFORMER AT KASAULI UNDER GE KASAULI

Amount

Disconnecting the electrical cable connections of existing 11/0.433 kV transformer 250 kVA from P-2 water supply Installation near Nouti Gaon village complete and transporting the same to the MES store yard Kasauli compete all as specified and as directed

Supply, install, testing and commissioning of Indoor Non-sealed type Mineral oil immersed Distribution Transformer ISI marked (IS-1180:2014) Step up/Step down, Copper wound , having Primary side voltage at 11 kV, 3 Phase and secondary side voltage at 433 Volts, 3-Phase, 50 Hz frequency of Capacity 250 KVA with following specifications:-

(i) No load Voltage ratio : 11000/433-250 Volts

(ii) No. of Phase - Three

(iii) Type of Cooling - ONAN

(iv) Frequency - 50 HZ

(v) Vector Group - DYn11

(vi) Indoor or Outdoor type : Indoor type

(vii) Application of Transformer : Distribution

(viii) Basic insulation level : 75 KVp

(ix) No of Tap position on HV Side ( offload & manual operated) : 7

(x) Tapping range : +5% to -10% in steps of 2.5%

(xi) Two earthing terminals for body earthing and two additonal for neutral brought out on a bushing

(xii) Oil level gauge indicating oil level at minimum, 30°C and maximum operating temperature

(xiii) Rating and terminal marking plates

(xiv) Lifting lugs

(xv) Dehydrating Breather with dehydrating agent.

(xvi) Cable end box - HV & LV side (both with Brass cable glands)

(xvii) Percentage Impedance - 4.5%

(xviii) Oil temperature indicator and winding temperature indicator

(xix) Arcing horns/ Lightning arrestor for HT side - 03 Nos

(xx) Thermometer pocket with cap

(xxi) Conservator with drain plug and a filling hole (1¼" normal size thread) with cover

(xxii) Drain-cum-sampling valve (¾" nominal size thread, IS 554) preferably steel with plug for three phase

(xxiii) Pressure relief device or explosion vent

(xxiv) One filter valve on the upper side of tank

(xxv) Unidirectional flat rollers.

(xxvi) Inspection hole

(xxvii) Buchholz relay

(xxviii) First filling of transformer oil of specifications as per IS-335

(xxix) Maximum losses of transformer shall be as per energy efficiency level-3 as per IS-1180 (Part-I) : 2014

(xxx) Altitude of installation - 1950m above MSL

Note: 1. The transformer shall be ISI marked with energy efficiency level -3 category and having BEE certification. Routine and type test cerificatete (as per IS-2026) shall be produced by the tenderer. Certification from BIS and BEE shall be produced against the manufacturer.

2. Any subsequent amendment to IS or Govt notification on the subject shall be assumed as implemented in the schedule mentioned above on the date of supply.

Supply, laying and testing cable XLPE Insulated, screened, PVC bedded, galvanized steel strip or wire armoured electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 185 sq mm 3.5 core.

Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and directed.

Cable jointing kit for 11 KV (Earthed) grade cable for Indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and directed.

Earthing complete with galvanised steel earth plate of size 60cmx60cmx6mm thick, buried directly in ground, earth pit not less than 2.25m deep below normal ground level with top edge of the plate not less than 1.5 m below normal ground level, connected to equipment by using Gl strips of size 32x6mm as earthing lead by means of bolts, nuts, checknut & washers of galvanised iron all as shown in Electrical plate No. 3 of MES schedule and connected to earthing test point all as specified and directed including earth pit of size 30cmx30cmx45cm made of PCC 1:3:6 and PCC 1:2:4 cover, funnel, GI tubing etc. & testing on completion, all as specified. Note: The units rate includes the cost of excavation & earth work in any type of soil, charcoal & salt in alternate layers, 20mm Gl Pipe (light grade) for watering 40mm Gl protection pipe (light grade) funnel wire mesh PCC 1:2:4 type B1 chamber in cement concrete, 50 mm thick precast RCC M-25 (Design mix) cover duly reinforced with XPM (weight not less than 3 kg /sqm) and Cl frame etc, and including provision of test point, connecting to test point and testing on completion etc, complete all as specified. NOTE: The unit rate include earthing lead and protection pipe upto 6.5 metre from top of earth plate.

Galvanised iron strip 32 x 6mm buried in ground complete all as specified and directed.

bharat refrigeration and electric co.