GE I R AND D/CHD-89/2026-27 ADDITION/ALTERATION TO EXTERNAL ELECTRIC SUPPLY AT DGRE,SEC-37A CHANDIGARH UNDER GE(I) R AND D CHANDIGARH

Supply, installation, testing and commissioning Outdoor type (IP54/55), 4 way RMU (Ring Main Unit) 11 KV, 630 Amps, 21kA-3 Sec, IP54/55 SF6 insulated, non extensible, consisting of Four No (1 i/c + 3 OG) Motorised Operated Vacuum Circuit Breaker (VCB) inside robotically welded stainless steel 304 (Non Ferrite Non Magnetic Grade) tank having min thickness 2.5 mm with IP 67 degree of protection and The RMU shall be suitable for operations at a height up to 1000 meters above sea level and at 40 degree ambient temperature without any derating. The switchgear and busbar shall all be contained in a stainless steel enclosure filled with SF6 relative pressure. The RMU tank shall provide full insulation, making the switchgear insensitive to the environment with degrees of protection of IP67 . The switchgear operating mechanism shall have an IP2X protection and cable chamber shall have IP3X. The complete RMU must be type tested for internal arc 21KA for 1 sec with AFLR classification for gas tank as per latest IEC complete installed on plateform as recommended by OEM . HT RMU shall preferably have on-site-repairability features such as site replaceable bushing/mechanism and gas refilling to have very less downtime in the event of bushing breakage and restoration can be done at site immediately without sending the RMU to OEM Works. Vaccum Interrupter must be RMU manufacturer's own make. Make of RMU shall be limited to : Siemens Limited/Schneider Electric Infrastructure Limited/ABB India Limited/Crompton. [Channel partner / System Integrator / Authourized Partner/ License partner make RMU shall not be accepted.] The unit shall include the following with all necessary standard fittings complete all as specified and as required at site:-

(a) Vacuum Circuit Breaker shall consist of the following accessories:- (i) Microprocessor based IDMT Relay for Circuit Breakers - Self Powered along with series trip coil (Modbus RS485 compliant) for each VCB Module (50, 51, 50N, 51N,), Relay Setting : 10-250% For Phase, 5-250% for E/F, Inst. Setting : 50-3000% For Phase 50-1500% for E/F. Relay should maintain 10 event records, 5 fault records with time stamp, min 2 setting group and keypad for setting parameters . (ii) Capacitive voltage indication fixed type LED display - 01. (iii) SF6 Gas pressure indicator on the gas tank. (iv) Operating sequence of VCB must be O-0.3Sec-CO-3 Mins-CO and suitable for 10,000 mechanical operation. (v) CT shall be minimum 100/1A ,2.5VA , 5P10 - 3 Nos. for protection. (vi) Capacitive voltage indication fixed type system as per IE. (vii) Interlocked cable box for front termination of the cable suitable upto 3 core 300 Sqmm, 11 KV XLPE cable (IP3X) safety interlocked to prevent access to cable termination in live- condition. (viii) Right angle boots (push on type). (ix) Cable covers with self interlocking mechanism between doors, earth switch, disconnector and VCB (x) Necessay interclocking arrangement for safety and operations.

(xi) One no. operating handle for manual operation and one no. manometer. (xii) Paint shade a) Front Cover RMU: Ral7035 & (For MIMIC RAL7043) b) Enclosure: RAL7035 & (Top Cover & Base Stand in RAL 7043) (xiii) Safety interlocks shall be provided as per relevant IEC/ IS standards and manufacturer's directions. (xiv) Above switchgear shall confirm to all relevant IEC/ IS standards. (xv) Earth mechanical indication on the front mimic of the panel - 01 (xvi) TRIP mechanical indication on the front mimic of the panel - 01 (xvii) Emergency trip push button (xviii) Live cable indicator with indications (Voltage Presence Indicator) at the front and three inlets provision to check the synchronization of phases .

Other Accessories :- i) Battery System: 24V DC (2 × 12V, 26 AH, Sealed Maintenance-Free type) batteries with automatic float/boost battery charger housed in LV compartment — 1 Set. ii) Anti-reflex manual operating handle — 1 No for manual operation of Vacuum Circuit Breaker Note: (i) Cost of civil work as per OEM recommendation i.e. Plinth, earth work,PCC work, brick work for fixing / installation of RMU shall be included in quoted rate. (ii) Cost of testing & commissioning by SEI /Rep of AO shall be included in quoted rate.

Supply,fixing and laying of XLPE cable insulated screened, PVC bedded galvanized steel strip of wire armored , electric power cable (Heavy duty) with aluminum conductor 11000 volts grade cross sectional area 95 sqmm 3 core suitable for 11 KV earthed system complete all as specified and directed . Note: (i) Earth work, removing, returning filling,PCC and pipe will be measured and paid separately. (ii) Cost of laying electrical cable through new/existing pipe, under road, buildings, highways are incl in the quoted rates. (iii) All equipments , machinery or tools if required for laying electrical cable through new/existing pipes are provided by the contractor without any extra cost.

Material and labour for cable end termination jointing kit HT 11 KV grade earthed system (heat shrinkable) outdoor type complete with jointing material suitable for HT XLPE cable 95 sqmm 3 core 11 KV grade earthed system complete all as specified and directed.

Material and labour for cable end termination jointing kit HT 11 KV grade earthed system (heat shrinkable) indoor type complete with jointing material suitable for HT XLPE cable 95 sqmm 3 core 11 KV grade earthed system complete all as specified and directed.

Material and labour for earthing complete with copper earth electrode 60cmx60cmx3 mm thick surrounded by char coal and salt buried directly in ground vertically in pit of depth not less then 2.25 mtr below ground level with top edge of the earth plate at depth of not less then 1.5 mtr below ground level surrounded from all sides by char coal dust and common salt in alternate layers of 15 cm depth and earth plate electrode connected to copper earth strip 20x3 mm at two points by means of GI nuts bolts, check nuts and washers and connected to earthling test point drawn through 40 mm dia GI pipe for protection pipe incl PCC earth pit (1:3:6) type C-2 with CI frame and RCC cover all as shown in electrical Plate No 3 on SSR Part-I including testing and dismantling ,taking down old unser earthing complete all as specified and directed. (i) Rate of Earth work, Earthing electrode, all connections, nut-bolts, washers, complete labour, testing, Earth lead upto 7.5 mtr, char coal dust, common salt, porcelain insulator, PCC earth Pit, CI frame ,RCC cover, funnel with wire mesh, watering pipe, earth lead protection pipe, test poit,shall deemed to be included in the quoted rate.

Supply and fixing earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 20x3 mm dia copper strip complete all as specified and directed.

Material and labour for earthing complete with galvanized steel plate earth electrode 60cmx60cmx6mm thick surrounded by char coal and salt buried directly in ground vertically in pit of depth not less then 2.25 mtr below ground level with top edge of the earth plate at depth of not less then 1.5 mtr below ground level surrounded from all sides by char coal dust and common salt in alternate layers of 15 cm depth and earth plate electrode connected to galvanised earth lead wire of 4.0mm dia at two points by means of GI nuts bolts, check nuts and washers and connected to earthling test point drawn through 15 mm GI pipe for protection of earth lead wire incl PCC earth pit (1:3:6) type C-2 with CI frame and RCC cover all as shown in electrical Plate No 3 on SSR Part-I including testing and dismantling ,taking down old unser earthing complete all as specified and directed. Note: (i) Rate of Earth work, Earthing electrode, all connections, nut-bolts, washers, complete labour, testing, Earth lead upto 7.5 mtr, char coal dust, common salt, porcelain insulator, PCC earth Pit, CI frame ,RCC cover, funnel with wire mesh , watering pipe, earth lead protection pipe, test poit, are incl in quoted rate .