CWE/GGN/FT-16/2026-27

Supply of 11 KV, 630 Amps, Extensible Outdoor Type (IP64), RMU (Ring main unit) 3 way Comprising of 3 Nos, 2 as incoming and 1nos as outgoing SF-6 vacuum circuit breaker having STC capacity 20KA for 1 seccond , inside robotically / manually welded stainless steel (Non Ferrite Non Magnetic Grade) tank having min. thickness 2 mm having IP 67 Degree of Protection. RMU should be provided with Copper busbars internal, external as well as earthing busbars should be of copper, Resin cast ring core protection CT on cables 100/1 Amp, 5P10, 2.5 VA - 4 No's. & Resin cast ring core metering CT 50/1 Amp, Cl 1.0, 2.5 VA - 4 No's. on cables, one number fault passage indicator per unit, padlock provisions & complete with all accessories. The RMU shall be type tested for Internal arc test report for IAC AFL 21KA for 1 second for both tank and cable box should have minimum 3 ways function ring main unit plug in type extensibility must be provided and coupling bus bar should not have expose to air to avoid oxidation. (RMU must be manufactured at place of the OEM and no third party shall be accepted) as per IEC62271-200. The unit shall include the following with all necessary standard fitting as required at site. (A) Note :- Other details:- System Particulars (i) Nominal system Voltage : 11kV (ii) Voltage variation on supply side : (+) or (-) 10% (ii) Corresponding Highest System Voltage : 12kV (iii) Frequency : 50Hz with (+) or (-) 3% tolerance (iv) Tranient condition : -20% or + 10% combined variation of voltage (B) 3 Nos. 630 Amp Motorized SF6 insulated Vacuum Circuit Breaker RMU, triple pole, single break 3 position (On, Off and earth having STC capacity 20 KA for 3 seconds with copper bus bar and copper earth bar fitted with fixed type voltage indicator device as per IEC 61958-1, fully rated with earth switch, spring assisted mechanism, Red/Green Push Button for On/Off Operation, Arc proof hinged type cable cover interlocked with Earth Switch, Air insulated cable boxes and boots suitable for bottom entry front termination of 3 core cable 95 Sqmm. (C ) 3O/C + 1E/F self powered relay with Low and High set for Over current and Earth Fault. Relay should have LCD (16 x 2). Relay should have facility to trip the breaker from remote commands without shunt trip coil, Last 5 Fault Record with Time stamp, battery pack replaceable from front complete all as spd and directed.

Transformer VCB should be provided with protection scheme for transformer faults like OTI, WTI & Buchholz's relay alaram& trip, along with annunciation & lock-out function Bus Connected PT Unit -1 No. for Metering consisting of following:- (i) Type M: Air Insulated metering module 12KV, 630A, 20KA for 3sec. (ii) 3 Voltage Transformers of the ratio 11kV/√3 / 110 V/√3, 25 VA, Class 1 with HT fuses on primary side and MCB on secondary side. (iii) 1 Digital MFM to measure Amps,Volts,Frequency,PF,KWH,KVAR. (iii) 1 LED Illumination. (iv) 1 Space Heater with thermostat. (v) 1 RYB phase indications. (vi) 1 set Bushings for external busbar connection along with Busbar cover & Sleeved busbars for coupling. (vii) 2x12 V Battery with battery charger with suitable burden for motor operation. Input 230 V AC & Output 24 V DC. Battery make: EXIDE/HBL. (D) LED based Capacitive voltage indication fixed type VPIS 9-15 kV Necessayinterclocking arrangement for safety and operations (E) One No. Operationg Handle for Manual Operation. (F) One No. Manometer. (G) Safety Interlocks Shall be provided as per relevant IEC/IS Standards and Manufacturers directions. (H) Above switchgear shall confirm to all relevant IEC/IS Standards. (I) The motor should be fitted in such a way that it should not be outside front covers of RMU. Coupling of RMU and Metering module should be with the help of Bolted type arrangement, so that the coupling at site shall be easy. Plug-in type bushing shall not be acceptable. (J) The Cable termination of RMU should be rear accessible only. And minimum 3 module should accommodate in one tank to avoid multiple coupling at site (K) PCC 1:2:4. type B1 using 20 mm graded aggregate for foundation of RMU as per recommendations of manufacturers of directed by EIC. Note (i) Any other parts/items not specified above but have been required essential for smooth and safe functioning of the RMU system shall be quoted rate. (ii) The RMU will be tested at site by primary injection test system and submit the test report.

Supplying, Installation, testing and commissioning of 100KVAR Automatic Power Factor Correction (APFC) panel, indoor type floor mounted free standing totally enclosed, extendable, IP 42, of following capacity for 3 phase, 415 V + 10 %, 50 Hz AC System for Ambient temperature -5°C to +40°C, fabricated in compartmentalised designed made of CRCA sheet steel of 2.0mm thick for framework & covers, 3 mm thick for gland plate i/c cleaning & finishing complete with 9 tank process for powder coated of approved shade ( RAL 7032-Siemens gray or as approved by Engineer-in-Charge), having front section (switch gear and control accessories) and rear section capacitor and reactor, front and rear access, having suitable current carrying capacity, extensible TPN Aluminium alloy bus bar of high conductivity, DMC/SMC bus bar supports, bottom base channel of MS Section, fabrication shall be done in transportable section, entire panel shall have common copper earth bar of minimum size of 25mm x 5mm with 2 nos. earth studs, the earth terminals provided on the body of capacitor bank shall also be bonded to the main capacitor panel earth bus with 2 nos. 8 SWG or 6 SWG GI earth wires/ equivalent size of copper conductor cable, forced ventilation for maintaining temperature rise not more than 5°C from ambient, interconnections connections with 14% detuned reactor and heavy duty 525 V ISI marked Impregnated MPP(Metalized Polypropylene) Capacitor (IS 13340 Part -1 & 2) APFC Panel shall be in compliance with IS :16636 & CPWD Specifications etc including taking down old u/s APFC Panel as per below details complete all as spd and directed.

(A) Incomers Suitable capacity MCCB Microprocessor base with O/C, S/C, E/L release of TPN 50KA breaking capacity (Ics=Icu), ON, OFF, Trip, R, Y, B - LED Indicating Lamp set alongwith required Instruments and accessories with extended rotary handel and door interlocking arrangment. Current rating of the Incomer in ampere shall be APFC Panel rating in 100KVAR x 1.4 x 1.5 or Nearest higher standards rating. (B) Instruments & Indications i) 3-Phase current sensing APFC microprocessor relay/controller , with 5 steps (50+25+15+5+5) and having display of Phase wise V, A, PF, Cos-Phi, Kw, KVA, KVAR, THD-V , THD-I, harmonics up to 31 level. 3 nos of dual core CT's accuracy class 1, 15VA at incomer of PCC Panel for APFC relay. ii) Auto Manual Selector switch, auxiliary contactors with timer for delay in manual mode. 383 DELHI

iii) Digital Multi function meter with LED Display for V, A, PF,KW, KVA, KVAR, THD-V & I, Frequency. iv) Suitable rating control transformer shall be provided for control and indication circuit. v) All components like control transformer, meter, relay and indicating lamp shall be protected by using suitable rating individual MCB's. vi) Wiring of the control circuit shall be done by using 2.5 sq mm, FRLS/HFFR 1100 V grade, PVC insulated multi stranded copper control wire. (C) Bus Bars 1.3 Amp per Sq.mm,TPN, Electrolytic grade Aluminium bus bar of capacity 1.25 times of incomer rating as per CPWD specification. (D) Outgoings (APFC Section) Selection of the capacitors combinations shall be for continuous rating and each capacitor bank shall have suitable capacity Heavy Duty ISI Marked Capacitor, capacitor duty contactor,the capacitor shall be mounted on channel with base of perforated M S Powder coated sheet, connections inter connections etc. and other features as per relevant IS Code having following: (i) Capacitor bank ratings & stages shall be as per the technical specifications sheet . (ii) Capacitor will be MPPH self healing type with discharge resistor, pressure release mechanism. (iii) Since Capacitor Voltage is 525 Volts, thus higher KVAR has to be considered to get rated output at 415 Volts. (iv) 14% Detuned Reactor of class H insulation & 150% linearity in series with Capacitor.

Supply and fix Lightning in replacement arresters expulsion type complete with all fittings, 11KV HT, discharge capacity 65 kilo amp complete all as spd and directed.

Supply and lay in trenches/fixed to walls/poles etc and commissioning XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor 1100 volts grade with strandede aluminium conductor of size 50 Sqmm , 3.5 core including taking down old u/s existing cable complete all as spd and directed.

Supply and lay in trenches/fixed to walls/poles etc and commissioning XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor 1100 volts grade with strandede aluminium conductor of size 95 Sqmm , 3.5 core including taking down old u/s existing cable complete all as spd and directed.

Supply and lay in trenches/fixed to walls/poles etc and commissioning XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor 1100 volts grade with strandede aluminium conductor of size 120 Sqmm , 3.5 core including taking down old u/s existing cable complete all as spd and directed.

Supply and lay in trenches/fixed to walls/poles etc and commissioning XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor 1100 volts grade with strandede aluminium conductor of size 150 Sqmm , 3.5 core including taking down old u/s existing cable complete all as spd and directed.