GE ELECT/D-95/2024-25

Amount

Supplying, installation, testing and commissioning of 11 KV 630 Amps having short circuit capacity 21 kA for 3 sec, Outdoor (IP54), RMU (Ring main unit) 5 way comprising of 02 Nos motorized operated load breaker and 03 No 630 Amps fixed type motorized spring charging VCB electrolytic grade copper bus bars all inside single, gas filled, robotic welded non-magnetic stainless steel 304 or better grade, IP 67 Degree of Protection tank with min thickness 2.5 mm +/- 0.1mm, min thickness for load bearing/outer sheet 2 mm and 1.6 mm for non-load bearing member, internal arc IAC AFLR classification, 21 kA for 1 sec for gas tank and Cable chambers. The enclosure shall have pad lockable doors as per OEM design, fully covering the front facia and cable boxes, ensure fail safe anti-theft protection. The unit along with Bus connected, fixed type Auxiliary transformer shall include the following along with all necessary accessories and fittings are required at site:-Make – ABB/ SIEMENS/C&S/SCHNEIDER (A) Incoming Load Break Module - Each consisting of following accessories: (i) Each switching – unit is designed as a three position switch. This three function switch combines the function of switch – disconnector an earthing switch (ii) 11 KV, 630 A Load Breaker Switch with interlocking line -earthing scheme both short circuit current, 21 KA for 3 Sec Making capacity – 50 kAp- 01 No (iii) Auxiliary contacts – 1 NO + 1 NC- 01 No. (iv) Spring assisted motorized mechanism with un-inhabited operating shaft for emergency manual operation with integrated earthing switch – 01 No (v) Cable terminals cable bushing situated not beyond 300 mm or as per OEM tested design from cable cover to allow ease of access for installation/testing) with door arrangement for enhanced safety (IP54+IP3X) interlocked to prevent access of size upto 11 KV, 300 Sq mm, 3 Core, along with XLPE AL cable termination / End Kits Each set of 3 (vi) Right angle boots (push on type) Each set of 3 (vii) Arc proof cable covers having cable entry from bottom, front with interlocking mechanism including earth switch – 01 No. (viii) Capacitive voltage indication fixed type system as per IEC 6123 with LED – 01 Set (ix) Fault passage indicator – It is to be provided for each incomer Load break unit, FPI with LED / digital display to be added to detection of cable fault – 01 No (x) ON, OFF, Earth mechanical indication on the front mimic of the panel – 01 No Cable cover standard - 01.

(B) Outgoing VCB Module - Each consisting of following accessories: - (i) Each function – unit consists of a vacuum – circuit breaker in combination with a three position – switch. The three-position switch fulfils the operation of the disconnector and earthing function. (ii) 11 KV, 630 Amps Fixed type VCB module with series disconnector cum earthing switch of short circuit breaking current / withstand, 21 KA for 3 Sec Making Capacity – 50 kAp - 01 No (iii) Auxiliary contacts – 1 NO + 1 NC- 01 No. (iv) Stored – energy motorized high – endurance spring charging mechanism (M1+), with inbuilt spring charging lever and mechanically latched ON/OFF push -buttons to allow handle less and un-inhabited operation – 01 No. (v) Cable terminals cable bushing situated not beyond 300 mm or as per OEM tested design from cable cover to allow ease of access for installation/testing) with door arrangement for enhanced safety (IP54+IP3X) interlocked to prevent access up to 11 KV, 185 Sq mm, 3 Core, along with XLPE AL cable termination Each set of 3 (vi) Right angle boots (push on type) Each set of 3 (vii) 3 O/C + 1 E/F self-powered numerical protection relay with low and high set for over current and Earth Fault. Relay should have facilities to display the maximum loaded phase current also. Relay shall record minimum 5 fault records with time stamping. Relay shall be communicable with RS 485 Port on MODBUS Protocol – 01 No/per VCB outgoing. (viii) Auxiliary Relay for OTI / WTI – transformer protection – 01 No (ix) Associated ring Core cast- resin insulated CTs Dual Ratio 100/50/1-1 or 81/40/1-1 or 50-25/1-1 Amp as per site reqmt (for metering and protection) 2.5 VA, 10 P 10 Protection – Each set of 3 (x) Arc proof cable covers having cable entry from bottom, front with interlocking mechanism including earth switch-01 No. (xi) Capacitive voltage indication fixed type system as per IEC 6123 with LED – 01 Set (xii) ON, OFF, Earth mechanical indication on the front mimic of the panel – 01 No (xiii) Emergency trip push button – 01 No. (xiv) CB mechanical operation should be min 10000 Nos without any maintenance. (xv) Vacuum Interrupter and VCB must be RMU manufacturer’s own make for better life cycle optimization.

(C) Bus connected, fixed type Potential and Auxiliary transformer with floor mounted compartment of matching height and depth, positioned alongside RMU to provide required aux. supply for spring charging motor and metering, consisting of following accessories:- (i) 1-Ph 11 KV/110V, class 0.5 potential transformer – 03 Nos for metering. (ii) 1-Ph (11 KV/rt3), 230 VAC, 250/500 VA Auxiliary transformer – 01 No for battery charging. (iii) 11 KV Tri vector Energy Meter of Class 0.5 accuracy with RS 485 Communication–01 No per VCB o/g (iv) 2x12 Volt DC battery – 01 Set (v) 230 VAC/24 VDC Battery charger – 01 No, with indication of status of functioning (vi) HRC fuse links for primary side isolation and AC/DC MCBs for secondary isolation – 01 Set (vii) Voltmeter & RYB LED indications to confirm AC/DC supply availability – 01 Set (viii) Anti condensation space heater with thermostat – 01 No (ix) LED lamp for illumination and 3 pin socket with switch – 01 No (D) Standard mano meter -01 for each tank, Operating handle - 02, cable clamping provision (standard)-01/for every cable entry, Operation and maintenance manual - 01, installation and commissioning manual - 01, RMU Foundation as per OEM Recommendation (Earth Work and PCC works) for placing RMU on plinth is deemed to be included in the cost quoted. Height of plinth should not be less than 0.45 mtrs from ground level. NOTE:- The above module consisting of Load break Switches and VCBs shall be aligned appropriately and must have electrical and mechanical interlocking as per latest electrical safety norms including installation on platform as recommended by OEM.

M&L for earthing complete with galvanized Steel earth plate electrode 600x600x6mm thick, buried directly in ground (earth pit not less than 2.25 meters below normal ground level) with top edge of the plate not less than 1.5 mtrs below normal ground level surrounded from all sides by mixture of charcoal and common salt and electrode connected to and incl galvanized iron strip 25x4 mm as earthing lead by means of bolts, nuts, check nuts and washers of galvanized iron or steel and earth wire protected by GI protection pipe light grade 40mm dia connected to main earth wire on pole or controll board GI pipe light grade 20mm bore for watering funnel with wire mesh PCC chamber pit in PCC 1:3:6 type C-1 40mm thick, Precast RCC -25 cover reincorced with 8 mm dia TMT bars @ 10 cm c/c on both sides and handle, excavation and earth work in any type of soil and removal upto 50m complete all as specified and shown in electrical plate No.3 connected to earthing test point complete all as specified or indicated including testing on completion.

Excavation in trenches not exceeding 1.5 metre wide & not exceeding 1.5 meter in depth for foundation, laying of cable or pipe (where provided for protection of cable or fixing with poles and stays) and getting out in any type of soil including trimming the sides and forming bottom surfaces to required levels complete all as specified and directed by the Engg-in-Charge.

Returning filling in, Including spreading, levelling, Watering and well ramming soil in layers not exceeding 25 cm thick complete all as specified and directed by the Engg-in-Charge.

Removing excavated material (ie soil) from site to a distance n. exc 50 mtrs away and depositing where directed at a level n. exc. 1.5 mtr above the starting point complete all as specified and directed by Engr-in-Charge.

M&L for river washed and screened, dry sand for filling in trenches below and around underground cables for cushioning of cables etc complete all as specified and directed by Engr-in-Charge.

Supplying and laying un-reinforced precast concrete cable cover, class HV, type1, flat size 300x180x40 mm complete all as specified and directed by Engr-in-Charge.

Supplying, Laying, jointing, testing and commissioning 11KV HT underground cables of size 185 Sqmm, 3 core 11000 volts grade, cross sectional area Core XLPE insulated and PVC sheathed, heavy duty armoured, with multistranded aluminium conductors, IS-7098 marked, laid in trenches complete all as specified and directed by Engr-in-Charge.

Boring of hole under road, pavement, hard standing by trenchless technology using ultra sound technique and any other necessary machine including M&L for HDPE pipe of 150 mm dia suitable for 0.4 mpa working pressure complete all as specified and directed by Engr-in-Charge. Note:- During boring work,hard rock may appear as the site is a hilly terrain any damage to the trenchless machine or any other machine will be in the scope of contractor. The contractor should take the permission from the NHAI, GAIL , BSES , MTNL, Army and other concern authority for boring is mandatory prior to initiation of work. If any of the services get damage during trenchless work the cost of repairing/replacement of the same is deemed to be included in the quoted rate by the contractor.

Supply, laying, testing and commissioning 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 by Engr-in-Charge.

Supply and fix Cable jointing kit for 11 KV (Earthed) grade cable for Straight through 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 by Engr-in-Charge.

Note : contractor should procure and provide 50 % of the material as listed above within 15 days of the placing of work order and shall be verified by the Engr-in-charge

BRIJ MOHAN LAL AND CO. (BID ID -3261018)

Commercial Traders (BID ID -3255901)

Rajindera Enterprises (BID ID -3260767)

Ridhi engineers and builders (BID ID -3256053)

M/s JAIMAA ASSOCIATES (BID ID -3255879)

M P TYAGI ENGINEERS AND CONTRACTORS (BID ID -3254326)

Vijay Electricals (BID ID -3255101)