| 1 | Supply, installation, testing and commissioning of Indoor 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 02 No. Incomer, 01 No. Bus Coupler and 02 Nos. Outgoing VCB Panels and floor-mounted/ top mounted Bus PTs for each bus section, 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 Copper busbars and droppers in all bus / breaker/ adaptor and cable chambers, 02 nos. Rack-In-Rack-Out Handles, structure made from AluZinc/GI sheets to prevent corrosion and rusting.The complete panel including HT and LT chamber with FRLS wiring and acessories shall be manufactured by approved OEM at its own mancufacturing in house facility, and same will be verified via stage/final inspection. System house integrator / channel partner products will not be accepted .
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| 2 | Notes:- (i) System house Integrator, Channel partner products shall not be accepted.
(ii) Make of VCB panel and relay shall be of same make.
(A) 02 x Incomer Panel, each comprising of following :-
(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 (24V DC).
(ii) Current Transformers 11kV,400-200/1A-1A, Core1: Class 5P10, 5VA, Core2: Class 0.5, 5VA, Core3: Class PS-X - Set of 03 Nos per breaker
(iii) Potential Transformers, Draw-out type for easy maintenance, 11kV/rt3:110V/rt3, 50VA, Cl.0.5 with associated gun-type HRC fuses and MCBs for HT/LT isolation - Set of 03 Nos.
(iv) Main Protection Relay shall be numerical IED Relay confirming to IEC60255, having 04CT+05PT Inputs with microprocessor based protection scheme for tripping the breaker on various faults like as under:-
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| 3 | (a) Directional over-current or earth-fault in any of the three phases,
(b) Synchronism and Energizing Check before breaker closing to prevent un-syncronized mixing of supplies
(c) circuit-breaker-failure alarm,
(d) interpanel tripping/blocking signals via GOOSE based peer-to-peer communication, on IEC61850 protocol.
(e) Integrted arc flash protection with current and light sensing.
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 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. | | |
| 4 | (v) Metering Equipment comprising of following:-
(a) 01 x Digital Voltmeter (Acc.Cl.0.5), 01 x Digital Ammeter (Acc.Cl.0.5),
(b) 01 No. 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 | | |
| 5 | (viii) Control Equipment comprising the following :-
(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) LED Lamp with ON/OFF switch - 01no.
(ix) Flush mounted Auxillary Protection Relays comprising the following:-
(a) Trip Circuit Supervision Relay,
(b) Master trip Relay,
(c) PT Fuse failure relay.
(d) DC Supervision Scheme
(x) Suitable Disconnecting Link type terminal arrangement shall be provided for interfacing PS-Class CTs installed in the panel for achieving the required protection.
(B) 01 x Bus Coupler Panel, comprising of following:-
(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 (24V DC). | | |
