Military Engineer Services Tender

(A) 02 Nos. Incoming Load Break Switch module each consisting of following accessories :- (i) Each switching-unit is designed as a three position switch. This three function switch combines the functions of switch-disconnector and earthing switch. (ii) Rated voltage 12KV, Rated current 630A, Load Break Switch with interlocked line-earthing scheme both short circuit current - 21kA/3-sec, Making Capacity - 50kAp -01 No, minimum Lightening impulse with stand- 75 kVp ,(iii) Auxillary contacts with connected wiring.

(iv) Spring-assisted snap-action motorized mechanism with un-inhibited operating shaft for emergency manual operation with integrated earthing switch -01 No, (v) Cable terminals (site replacable Cable bushings situated at comfortable working distance from cable-cover to allow ease of access for installation/testing/replacement purposes) with double-door arrangement for enhanced safety (IP54+IP3X) interlocked to prevent access upto 11 KV , 3 Core , XLPE AL cable termination in live-condition. Each Set of 03, (vi) Right angle boots (push on type)-Each Set of 03, (vii) Arc proof cable covers at cable entry , front with Interlocking mechanism including earth switch -01 No

(viii) Capacitive voltage indication fixed type system as per IEC61243 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 for detection of cable fault-01 No,, (x) ON, OFF, EARTH mechanical indication on the front mimic of the panel - 01 No

(B) Outgoing VCB 02 Nos. each module 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 fulfills the operation of the disconnector-function and earthing function.(ii) 12kV rating , 630A Fixed-Type VCB module with series disconnector cum earthing switch of short circuit breaking current/withstand - 21kA/3-sec, Making Capacity - 50kAp-01 No, (iii) Aux. contacts - with wiring (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-inhibited operation -01 No. (v) Cable terminals (site replacable Cable bushings situated not beyond 300mm from cable-cover to allow ease of access for installation/testing/replacement purposes) with double-door arrangement for enhanced safety (IP54+IP3X) interlocked to prevent access upto 11 KV , 120 Sqmm , 3 Core, XLPE AL cable termination in live-condition. Each Set of 3. (vi) Right angle boots (push on type)-Each set of 3.

(vii) Self power relay for overcurrent and earthfault protection with RS 485 port suitable for SCADA connectivity on Modbus. 3 phase definite time over current and short-circuit protection with variable tripping times (ANSI 50/51), 3 phase over current protection with selectable inverse time characteristics and defintie time short-circuit current element (ANSI 50/51), definite time earth over current and earth short-circuit protection by internal calculation (ANSI 50N/51N), earth over current protection with selectable inverse time characteristics and instantaneous short-circuit current element (ANSI 50N/51N) (viii) Associated ring-core cast-resin insulated CTs 11 KV, 50/1 Amp , 2.5 VA, 5P10 for protection - Each Set of 3. (ix) Arc proof cable covers with self Interlocking mechanism with earth switch -01 No (x) Voltage indication fixed type system. (xi) Push button for breaker trip. (xii) Shunt trip coil 24V DC - 01. (xiii) ON, OFF, TRIP mechanical indication on the front mimic of the panel - 01. (xiv) Emergency Trip Push Button - 01. (xv) To ensure reliablility of operation Vacuum interrupter shall be of same make as Ring Main Unit. (D) Additional equipment deliverd separately or mounted seperately :- (i) Operating Handle for Manual Isolator/Disconnector/Earthing Operation-02 Nos, (ii) Operation and Maintenance Manual -01 No, (iii) Installation & Commissioning Manual -01 No, (iv) Cable clamping provision (standard) -01No

Note:- (i) Necessay interclocking arrangement shall be provided for safety and operations. (ii) Above switchgear shall confirm to relevant IEC (62271-200) for design, manufacturing and internal arc compliance. Any claims towards internal arc compliance, number of mechanical/electrical/short-circuit operations, gas-leakage rates etc. shall not be accepted unless proven via type-test reports of model being offered. (iii) Cost of construction of foundation including construction material, necessary earth work and excavaton as per manufacturer design for RMU complete all as required at site and as directed by Engr-in-charge are deemed to be included in the quoted rate. (iv) Including power pack 24 Volts DC, 110 Volts AC input from P.T suitable for protection relay.

Disconnecting the HT cables, earthing leads/strips of 11 KV OCBs and taking out the complete OCBs from the site of any type and capacity, lifting transporting the same to store yard to keep OCBs in safe custody complete all as specified and directed.

Supplying, installing, testing and commissioning of Indoor arc flash protected Draw-Out with roll on floor type Vacuum Circuit Breaker Panel , rated for 11kV, 630Amp, 26.3kA/3-sec, comprising of Incomer, confirming to IEC 62271-200, Internal Arc Classified IAC AFLR – 26.3kA for 1sec, Accessibility Class LSC2B-PM Class, comprising of 630Amp, continuous rated Copper busbars and droppers. Rack-In-Rack-Out Handles, structure made from CRCA sheets to prevent corrosion and rusting. The complete panel incl. HT and LT chamber with FRLS wiring shall be manufactured by approved OEM at its own facility, and same will be verified via stage/final inspection.The Switchgear panel offered shall be an Active Lifecycle product of the OEM .Make of Vacuum interrupter, Numerical Relay, CB & Panel shall be same. The Board shall consist of following panels:-

(A) Incomer VCB Panel comprising of :-

(i) 11kV, 630Amp, 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, 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 (24VDC).6 NO+ 6 NC auxillary contacts.

(ii) Current Transformers 11kV, 100/50/5A, Core1: Class 5P10, 5VA, Core2: Class 0.5, 5VA, 3nos:

(iii) Potential Transformers, Draw-out type for easy maintenance, 11kVְ110V/rt3, 50VA, Cl.0.5 with associated gun-type HRC fuses and MCBs for HT/LT isolation - Set of 03 Nos. The Line PTs in the incomer panels shall be floor mounted or roll on floor type, it should not be placed on top of the panel.

(iv) Main Protection Relay shall be numerical IED Relay confirming to IEC60255,with microprocessor based protection scheme for tripping the breaker on various faults like (a) Birectional over-current or earth-fault in any of the three phases, (b) Tripping relay shall be used for tripping signal to shunt trip coil of CB on power pack. (c) circuit-breaker-failure alarm, (d) interpanel tripping/blocking signals (e)The relay shall be scada compatible having communication on RS-485 modbus protocal. (f) The relay shall be manually reset type for over current and earth fault adjustable setting. (g) The panel shall have master trip relay, TCS relay and auxillary relay for transformer fault. (h) Anti pumping relay panel shall have following additional features :- (i) Continuous rated closing / tpping coils. (ii) Integral spring charging handle. (iii) fully internal arc tested (25 KA for 1 sec) as per latest IEC 62271-200 norms.

(v) Metering Equipment including:- (a) 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) R-Y-B, (c) DC Available LED with push-button (d) AC Supply Fail (e) Trip Circuit Healthy

(vii) 08-Window Annunciator with Hooter to indicate following alarms :- (a) OC Trip, (b) EF Trip (c) Trip Circuit Failure, (d) Inter-Tripping Fault, (e) Synchro-Check. (f) PT Fuse Failure 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) MCBs for DC (f) Heater Switch with Thermostat - 01no. (g) 3-pin socket with ON/OFF switch - 01no. (h) CFL Lamp with ON/OFF switch - 01no.

(ix) Flush mounted Auxillary Protection Relays incl:- (a) Trip Circuit Supervision Relay, (b) Master trip Relay, (c) PT Fuse failure relay. (d) DC Supervision Scheme (e) Power pack 24 Volts DC 110 Volts AC input from P.T suitable for protection relay.

VCB 11kV Bus-Coupler Panel :- All as per description of item 5.00 (5.01 to 5.10) as INCOMER PANEL except Current Transformer, Potential Transformer and Protection & Auxiliary Relays,but inlcuding 11kV Bus-Riser Panel.

Note for 5 &6 :- The panel shall be complete with all allied items and accessories, including:- (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) Complete panel will shall be suitable for future intigration with SCADA (iv) Foundation frames shall be inclusive in the scope of supply of OEM. (v) License parter, system integrator, panel builder, half-panel is not allowed for 11kV VCB. All works shall be done at own works. (vi) All items will be transported in wooden packaging to avoid any damage. Acceptance of material will be discretion of GE. Contractor has to remove the material in case of rejection of material at no extra cost. (vii) Factory acceptance test shall be carried out for 11 KV HT VCB. (viii) Fabrication of adaptor panel incl alteration/couple and matching bus bar required at site with existing panel of make CG model JVAC is deemed to be included in quoted rate. (ix) The new VCB panel should be connected with existing old panel including pieces of busbar, busduct complete items for matching with the existing old panel.

Supply, laying, jointing and testing cable XLPE insulated screened PVC bedded galvanized steel strip or wire armored, electric power cables (Heavy duty) 11000 volts grade with stranded aluminum conductor of cross sectional area 3 core 120 sq mm complete all as specified and directed.

Material and labour for cable jointing kit for 11 KV (Earthed) grade cable for indoor/outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 sq mm complete all as specified and directed.

Material & labour GI tube light grade 100 mm for protection of UG cable including dismantling complete all as specified and directed.

Supply and fixing HT cable root indicator of cast iron embedded in PCC 1:3:6 type C-2 (using 20 mm graded stone aggregate) of size 100x100x200 mm foundation up to ground level including necessary earth work in any type of soil complete all as specified and directed.

Material and labour for earthing with steel earth plate electrode of size 60x60cmx6mm thick buried directly in ground to a depth not less than 2.25 mtr deep below normal ground level with top edge of the earth plate not less than 1.5 mtr deep below normal ground level connected to galvanized iron strip of size 32 X 6mm as earthing lead by means of nuts, bolts and washers of steel after welding of GI strip to earth electrode to the full length of earth plate,40mm dia GI tubing light grade protection pipe up to test point, 20mm dia GI watering pipe with funnel and wire mesh, PCC pit 1:3:6 with pit cover of size 30X30cm made of RCC 1:3:6 with suitable handle angle iron frame made of angle iron of size 40x40x4mm, adequate qty of charcoal dust and salt layers all around the earth plate, removal of surplus soil and returning filling in all as required at site including test point made out of steel plate of size 75x75x6mm fixed to wall all as specified in plate No 3 of SSR Part-I and directed.

Excavation in trenches n. exc. 1.5 mtr wide and n. exc. 1.5 mtr in depth in soft/lose soil for laying cable/taking out under ground cable, GI pipes and bricks laid under cable and getting out in soft/loose soil complete all as directed.

Returning, filling in trenches including spreading, leveling, watering and well ramming in layers n. exc. 25 cm thick in soft/lose soil after cable/pipes are laid and tested complete all as directed.

Removing the excavated soil to a distance n. exc. 50 mtr and depositing where directed at a level not exc. 1.5 mtr above the starting point complete all as directed.

Supply & laying Sand coarse dry as in cushioning of underground electric cable in trenches, laid to a uniform thickness of 23cm (15cm under the cable & 8cm over the cable ) and gently punned down to 18cm thickness all complete all as specified and directed. Note :- Only punned down sand thickness 18CM shall be measured and paid.

Material and labour for un-reinforced precast concrete cable cover HV type I, flat size 300 mm X 180 mm X 40 mm as protection to underground cable laid dry and flat adjoining each other complete all as directed.