SPECIAL REPAIR/ REPLACEMENT OF 1 X VACUM CIRCUIT BREAKER AGAINST BER AT 33 KVA MRS NAMKUM UNDER GE RANCHI

Amount

Supply, install, commissioning and testing vacuum Circuit Breaker of capacity 12 KV, 630 Amps, 25 KA with ruptering capacity 350 MVA totally enclosed metal clad switch gear panel board with vaccum circuit breaker floor mounted with common copper bus bar, indoor type compact rated current switch discharge, 630A, short time with stand current (3 sec) Horizontal Drawout type Vacuum Circuit Breaker shall be Comprising with following parts/spare complete all as directed :

(a) Vacuum interrupter of capacity 12KV,1250A, 25 KA with, rings and End rod insulators (b) Motor/Manual Spring charging mechanism - 230 V AC. (c) Closing & Tripping Coil Suitable for 24 V DC. (d) Auxiliary Switch 06 NO. + 6 NC. (e) Mechanical ON/OFF Indication. (f) Mechanical Spring Charge / Discharge Indication. (g) Breaker Position Indicator suitable. (h) Mechanical Operating Counter suitable. (j) Automatic Safety Shutters. (k) Secondary Plug in Contacts suitable. (l) Anti Pumping Relay.

11 KV Indoor single phase Resin cast current transformers (CTs) (03 NOs) 12 KA with CT Ratio : 100 - 50 / 5+5 Amp ,Core I CL 1.0 with 15 VA burden for metering, Core II CL 5P10 With 15 VA for Protection burden short circuit rating 18 kA with insulation level 12kV/28kVrms/75kVp complete all as directed.

11 KV Indoor Fixed type three phase Resin Cast potential transformers (PT) with Ratio : 11 KV /√3/ 110V √3, of 100 VA, voltage factor 1.2 cont., 1.5 for 30 sec., Rated Voltage 12 KV Cl. 1.0, voltage factor 1.2 cont., 1.5 for 30 sec, Insulation Level : 12kV/28kVrms/75kVp with HT fuge 3.15A (03 Nos) burden for metering & Protection.

Earth leackage relay Suitable Setting Range with CBCT -01.

Space heater 240V AC and thermostat with range of temp (range 30°C-85°C) suitable for fixing inside kiosk of VCB-01 set.

Non- Discrepancy Type Circuit Breaker Control Switch with pistol grip handle, Spring return to neutral - 01 No.

Set of three phase air insulated main Copper bus bar of Suitable continuous current rating with PVC insulation of sleeves- 01 set.

Control relay Panel totally enclosed to VCB with following items to fully funtional to control of VCB system: (a) 4 Pole Non - Directional IDMT 3 O/C and 1 E/F function Numerical relay Aux. Voltage : 110 V DC/ 24 V DC - 01 Nos (b) Master Trip Relay -01 No (c) Non- Discrepancy Type Circuit Breaker Control Switch with pistol grip handle, Spring return to neutral- 01 Nos (d) Test Terminal Block, Terminals, Terminal block Stud/Clamp type, Polyamide -01 nos (e) HRC Fuse link & Base - 01 set (f) Lamp & Push Button - 01 set (g) LED type Indicating Lamp of 22.5 dia - 01 set (h) Space heater 240V AC and thermostat with range of temp ( range 30°C -85°C) suitable for fixing inside kiosk of VCB -01 set, (j) Illumination Lamp Holder with bulb with 100W, 230V AC and Door operated switch for Illuminating lamp -01 Set (k) Hooter-01 , (l) Anti Pumping Relay-02 Nos (m) MCB for 240V AC Supply -01 Nos

Battery Power Pack Battery with 7 AH & in built charger for 24V Circuit making fully functional metering breaker

M & L for provision of earthing complete with GI earth plate electrode 600x600x6mm thick buired directly in ground vertically to a depth not less than 2.25m below ground level with top edge of the plate at a depth not less than 1.5m below ground level, connected to and including GI strip 32x6mm with GI protection pipe 40mm bore light grade connected to and including by means of GI bolts, nuts check nuts and washers all as shown in electric plate No. 3 of SSR part-I including necessary excavation earth work in any strata PCC 1:3:6 type 2 chamber RCC 1:2:4, type B1 cover slab 50mm thick with 8mm TMT bar 100mm centre to centre including 8mm dia handle and watering pipe medium garde 20mm bore, funnel, wire mesh, etc and testing on completion complete all as directed. Note : Galvanised iron strip 32x6mm beyond 7.5 mtr will be neasured and paid seperataly.

S&F GI strip 32x6mm for connection of earthing complete all as directed.

Supply, laying, commissioning and testing and of HT cable XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminiium conductor, 11000 volts grade, crosss secctional area 120 Sqmm 3 core with earthed system laid in trenches or in duct/passed through pipes or fixed on walls/poles etc complete all as directed.

S & F cable jointing kit for 11KV (Earthred) grade, cable for indoor termination cold shrink type joint complete with jointing materials and accessories suitable for XLPE armoured alminium conductor cable of size 120 Sqmm, 3 core complete all as directed.

S & F cable jointing kit for 11KV (Earthred) grade, cable for outdoor termination cold shrink type joint complete with jointing materials and accessories suitable for XLPE armoured alminium conductor cable of size 120 Sqmm, 3 core complete all as directed.

M& L for GI tubing medium grade of size 100 mm dia fixed on walls / laid in trenches as protection pipe for under ground cable including provisioning of specials and clamps etc including taking down of old unseviceable pipe any type and any size complete all as directed.

Demolition of concrete in ground floors and paving n.exc 15cm thickness below or above ground level complete all as directed.

Raj Construction