PROVN OF HT CABLE ,RMU AND VCB OF EXTERNAL ELECTRIC SUPPLY FOR AKANSA BUILDING UNDER GE (U) ELECTRIC SUPPLY DELHI CANTT 10

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) 3 way comprising of 02 Nos motorized operated load breaker and 01 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 65 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:-

(A) 02 Nos incoming motorised 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) 01 Nos outgoing motorised 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.

(ix) Associated ring Core cast- resin insulated CTs Dual Ratio 200-100/1-1 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. (xvi) VCB should be confirm 0-0.3 sec -CO-3min - CO sequence operation.

(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.

Supply laying jointing testing and commissioning of 11 KV (E) grade of size 185 sqmm 3 core (Heavy duty)with stranded compacted circular aluminum conductor, conductor screened with extruded semi-conducting compound, XLPE insulated, Insulation in combination with Copper tape, cores laid up, inner sheath of Thermoplastic tape, PVC bedded, galvanized steel strip armoured and over all FRLS PVC Sheated conforming to IS-7098, part -II with latest amendments laid in Cable Ducts/ trays/ trenches/encased in HDPE pipes complete all as specified and directed.

Note for Item No 2 (i) Each cable drum not less than 500 Mtr length (ii) The contractor will be responsible for taking permission from appropriate authority i.e. NHAI / IGL / Cantt board or other Units , if needed for the above said cable work necessary payments for work clearence / deposit charges for appropriate authority to be incuded in the rate quoted above (iii) Manual Excavation has be carried out at the places of Services such as of near Existing HT/LT Cables, OFC/ Telecom Cables , Water / Gas Pipe/ Sewage Pipe Lines, Area Drinages and Contractor shall be responsible for rectification of damages immediately on priority to the damages of Services occured during execution of the cable / earth work.

M&L for Excavation in trenches, n exc 1.5m wide and n. exc 1.5 m in depth and getting out for laying of HTcable etc exc 10 Sq m on plan and getting out complete all as specified and directed.

M & L for sand cushioning to underground HTcable incl punning down of sand layer all as specified and directed. Note :- For measurement purpose only punned sand shall be measured & paid.

Supply & laying un- reinforced precast concrete cable cover class HVP type 1 with peak size 300 mm x180mmx40mm in trenches for protection to under ground cable complete all as specified.

M&L for returing/filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm in soft / loose soil complete all as specified and directed.

M&L for removing of excavated material n exc. 50m and depostiting where directed at a level n exc. 1.5m in soils complete all as specified and directed.

Supply and fix of cable route indicator made of RCC with 8 mm TMT size 1.5 M height x 60 cm wide x 10 mm thick tapered on top visible above ground duly painted with synthetic enamel paint of yellow colour base and letters with black paint. The description for writing for HT cable 11kv will be given by Engr-in-charge complete all as specified and directed.

Supply, jointing and testing, indoor end termination heat shrinkable type joint , suitable for HT, 11 KV (E) XLPE cables, aluminium stranded conductors cable 3 core 185 Sqmm.

Supply, jointing and testing,outdoor end termination heat shrinkable type joint , suitable for HT, 11 KV (E) XLPE cables, aluminium stranded conductors cable 3 core 185 Sqmm.

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 185 Sqmm

M&L for boring of holes on any type of soil of size 250 mm dia, under road/pavement/hard standing by trenchless technology using ultra sound technique and necessary machine including material and labour for HDPE pipe of 200 mm dia suitable for 04 Kg/cm working pressure, Wall thickness of pipe not less than 6.5 mm complete all as specified and directed.

Note: for Item No 12 (i) The contractor will be responsible for taking permission from appropriate authority i.e. NHAI / IGL or other Units , if needed, for above said work. (ii) Depth of Trench Less shall not less than 2 mtr from ground level unless other wise specifed due to site requirement and contractor has to maintain the depth of trenchless up to 4 mts from ground level if required as per site conditions all rates quoted shall be demeed to be included to maintain the Trench less depts as directed during exection to avoid damages to the existing services (iii) The cost quoted is deemed to be inculded for repiars / rectification for damages done to the existing elecrtical / comminication and water supply system / Sewage System during execution of work

Supplying, installing, testing and commissioning of Indoor(IP4X) arc flash protected Draw-Out with roll on floor type Vacuum Circuit Breaker Panel, rated for 11kV, 800 Amp, 26.3kA/3-sec, comprising of 01 Nos outgoings, confirming to IEC 62271-200, Internal Arc Classified IAC AFLR – 26.3kA for 1sec, Accessibility Class LSC2B-PM Class, comprising of 800 Amp, continuous rated Insulated Copper busbars and droppers in all bus / breaker/ adaptor and cable chambers , 01no. Rack-In-Rack-Out Handles, structure made from AluZinc/GI/ Powder Coated CRCA sheets to prevent corrosion and rusting. The complete panel incl. HT and LT chamber with FRLS wiring and accessories shall be manufactured by approved OEM at its own manufacturing in house facility, and same will be verified via stage/final inspection. The Make of the VCB, Panel And Relay Shall be of the Same Make.The panel shall consist of following OEM / Makes: ABB/ Siemens/ Schneider/Crompton Notes: (i) These HT panels shall be installed in with the existing / fixed with the existing VCB and Rate Quoted Shall be inclusive of the Adapter Panels/ connecting Copper Bus Links. (ii) Necessary Cat 6 and Modbus cabling from panels to existing RTU panel shall be provided by the contractor within this scope only.

(A) 01 x Incomer Panel, each comprising of :- (i) 11kV, 800 Amp, 26.3kA/3-sec, Draw-Out Vacuum Circuit Breaker as per IEC-62271-100 with roll on floor type Vacuum Circuit Breaker having 03 Nos. vacuum bottles of same make as of circuit breaker and panel, motorized spring charging mechanism (230VAC) with integral spring charging handle for manual charging, associated push-buttons, anti-pumping feature, and associated Shunt Trip/Close Coils (24 Volt DC ). (ii) Current Transformers 11kV, 200-100/1A, Core1: Class 5P10, 5VA, Core2: Class 0.5, 5VA - Set of 03 Nos per breaker

(iv) Main Protection Relay shall be numerical IED Relay confirming to IEC60255, having 04CT Inputs with microprocessor based protection scheme for tripping the breaker on various faults like (a) Over-current or earth-fault in any of the three phases, (c) circuit-breaker-failure alarm, (d) interpanel tripping/blocking signals via GOOSE based peer-to-peer communication, on IEC61850 protocol. (e) 03 Nos integrated arc flash protection with current and light sensing (relay operation from light sensing with in 10 mile second) The relay shall be communicable on IEC 61850 GOOSE platform over RJ-45/USB/FO port, and fully integrated with the feeder, internally capturing feeder statuses incl. various status, Line-Current, Line-Voltage, Breaker On/Off/Spring.Chrgd, Trip Circuit Failure (from TCS relay), AC Supply Fail, PT Fuse failure relay, Local-Remote etc. and display locally on a built-in back-lit LCD screen with mimic as a Single-Line-Diagram with suitably labelled status LEDs. Relay setting should be possible through inbuilt software or through addtional software supplied by the relay manufacturer.

(v) Metering Equipment including:- (a) Digital Ammemter (Acc.cl.0.05) (b) 01no. Multi-Function-Meter (Acc.Cl.0.5) shall be provided with LCD display for measuring current, voltage, power, power-factor and energy-parameters, Total Harmonic Distortion and Max. Demand Indication, same shall be communicable on ModBus via RS485 port. (vi) LED Indications :- (a) Breaker ON/OFF/TRIP/Spring-Charged, (b) DC Available LED with push-button (c) AC Supply Fail (e) Trip Circuit Healthy (vii) 08-Window Annunciator with Hooter to indicate following alarms :- (a) OC Trip, (b) EF Trip (b) Trip Circuit Failure, (c) Inter-Tripping Fault, The Annunciator will be complete with required Acknowledge/Test buttons as required (viii) Control Equipment incl. :- (a) 01 x TNC Switch, (b) 01 x Local/Remote Switch, (c) 01 x Emergency Trip Push Button, (d) MCBs for AC (e) 3-pin socket with ON/OFF switch - 01no. (f) LED Lamp with ON/OFF switch - 01no. (f) power pack (230v) AC to 24DC.

(ix) Flush mounted Auxillary Protection Relays incl:- (a) Trip Circuit Supervision Relay, (b) Master trip Relay, (c) DC Supervision Scheme (x) Suitable Disconnecting Link type terminal arrangement shall be provided for CTs. The relay shall be fully integrated with the feeder, internally capturing feeder statuses incl. various status, Bus-Voltage and display the same locally on a built-in back-lit LCD screen with mimic as a Single-Line-Diagram with power & frequency measurements and suitably labelled status LEDs. Relay setting should be possible through inbuilt software or through addtional software supplied by the relay manufacturer.

Note for Item 13 (i) Cost of construction of foundation as per manufacturer design, including foundation frame (supplied by OEM), channels etc. for HT Panel as required at site are deemed to be included in the quoted rate. (ii) Each VCB panel being floor-mounted, air-insulated, fully-compartmentalizeds The OEM shall supervise and certify the commissioning/charging of equipment. (iii) Foundation frames shall be inclusive in the scope of supply of OEM.

Earthing complete with galvanised steel earth plate electrode 60 cm x60 cm x 6 mm thick buried directly in ground ,Earth pit not less than 2.25 meter deep below ground level) with top edge of plate not less than 1.5 meter below normal ground level ,connected to and including galvanised iron earth wire 32 X 6 mm by means of nut, bolts, check nuts and washers of galvanised iron or steel and provision of charcoal dust and common salt packed all around the earth plate including necessary excavation and earth work in soft/loose soil and testing complete all as specified and directed and shown in electrical plate number 3 of MES SSR part-I (2009) (a) Excavation and earth work for electrode in soft/loose Soil. (b) PCC pit in cement concrete 1:2:4 type B-1, Pre cast RCC cover with suitable handle 40 mm thick in PCC 1:2:4 type B-1, reinforced with welded steel wire . (c) Funnel with watering pipe of GI 20 mm nominal bore light grade and lugs etc complete all as specified and directed (d) 40 mm nominal bore medium grade GI protection pipe for protection of earthing lead complete all as specified and directed. (e) Requisite quantity of common salt and charcoal. (f) Testing of earthing.

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 Eng-in-charge

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