Supply of Spare Parts of MDB/LT Panels along with SITC of Panels at Sec-51 and Sec-83 of NMRC

Supply of following items compatible with the existing ACB M/s ABB make model no. 'E1N_PR122LSIG+ PR120' (630A, 50kA, FP,EDO) Electrically operated drawout type air circuit breaker complete with microprocessor based release having variable range of O/C, S/C,UVR and E/F protection & RS-485 port & display.

Supply of 230V AC shunt trip coil

Supply of 230 V AC closing coil

Supply of 230V under voltage release

230V AC, spring charged motor with mechanism

1 C/O trip contact

LCD Display

Auxiliary contact

Service contact Block

RS- 485 port MOD- Bus

Current transformer (CTR-600/5A, CL-1, 15VA Cast Resin)

Supply of following items compatible with the existing ACB M/s SCHNEIDER make model no. 'MASTERPACT-NW08H13P' (630A, 50kA, FP,EDO) Electrically operated drawout type air circuit breaker complete with microprocessor based release having variable range of O/C, S/C,UVR and E/F protection & RS-485 port & display.

Supply of 230V AC shunt trip release

Supply of 230 V AC closing coil

Supply of 415V AC under voltage release

230V AC, spring charged motor

Fault trip contact

LCD Display

Aux Switch with 2NO + 2NC contacts

Ready to close contact

ACB test position Switch

ACB Service position Switch

RS- 485 port MOD- Bus

Current transformer (CTR-600/5A, CL-5P10, 15VA Cast Resin) type-WPL

Visit pertaining to breakdown related to MDB and other associated panel in ASS/RSS. (Visit charge shall as per activity, material shall be provided by employer) Visit shall be preferred in night shift.

Maintenance of ACB

Testing of release

Supply of Adjustable trolly for breaker maintenance

SMPS compatible with ACB of 800 Amp, 415 V ACB

Calibration and testing of Multifunction meter (MFM) CL-1, CTR-/5A, 15VA

Supply of Electronic coil module of different modules of ABB contactor.

AF190-40-00,230V AC With 2NO+2NC, 250A

AF116-40-00, 230V AC With 2N0+2NC, 160A

General

The BOQ specified below include the latest relevant standards, specifications, drawing details, etc. and the bidder/ contractor is required to go through all stated above as referred in tender document while quoting the rates. All the samples/ material intended to be used in the works shall be subject to approval of the Employer's representative before supply.

Bus Bar Sizing calculations shall be submitted for approval to Employer or his representative.

The price shall include the supply, installation, testing & commissioning at site of all equipment, ancillary materials as specified and all such items what so ever required to fulfil the intent and purpose as laid down in the specifications and / or drawings .

All items shall confirm to IS/ IEC/ BS/ NBC as per approval of Employer's representatives.

Switchboard/Panel

Supply, installation, testing & commissioning of front operated front access cubical type indoor duty floor / wall / recess/ surface mounting, totally enclosed dust and vermin proof (minimum protection IP 54) panels with neoprene gaskets, fabricated from CRCA sheets with powder coated finish (minimum thickness 80 micron) suitable for 415 ±10% volts 3 phase 4 wire 50±3% Hz system to withstand symmetrical fault level of 50/ 35/25 KA for 1 sec at 415 V including interconnections, bonding to earth etc. and flush doors conforming to relevant IEC (viz. IEC 61439-1&2) standard including the earth leakage protection complete as per specification & drawings as required and as given below. All internal wiring in the panels shall be carried out using FRLSH wires.

All panel shall be form 4b/ type5. The Switchboards shall be provided with aluminium detachable gland plates for entry of cables from the top as per Specifications.

All live accessible parts shall be shrouded and all equipment shall be finger touch proof. SMC/ DMC shrouds and busbars supports suitably spaced shall be used. Hinged doors shall be provided on all outgoing feeders with switch handles lockable in OFF position.

The panel shall have High conductivity, High Strength Copper busbars with bar type feeder connections, spacers etc. and neutral busbar shall be of 100% capacity. Busbar spreader shall have full contact with lugs of cable.

Earthing all components, frame etc. to a common internal earth bar of minimum size 50 x 6 mm Aluminium bar

All accessories & supporting structures such as channels, 100mm. ISMC base frame, mounting brackets, lifting lugs, panel heaters arrangement etc. as required.

Each incomer and outgoing feeder shall be provided with LED status indication lamps suitable for 230 V, AC as approved

The makes of components and accessories shall, to the extent practically feasible, be same for panels and boards for uniformity, standardisation and replaceability and shall be applicable to all panels/ boards under the scope of work.

Switchboard including interconnections, labelling, earthing & erection etc. complete as required.

All MCCBs shall be current limiting type microprocessor based, rated for requisite specified Service short circuit breaking capacity (Ics) suitable for isolation conforming to latest IEC60947-2 duly marked on MCCB, at operating voltage (Ue) of 415 V, insulation voltage (Ui) 750 V and with trip free mechanism, handle indicating ON, OFF, tripped position. The breaking capacity as mentioned shall be Ics values. MCCB’s for Network / Feeder Protection shall have releases with inbuilt Earth Fault protection feature, wherever and as indicated in Bill of Quantities or Drawings. TP MCCBs with inbuilt earth fault protection shall be provided with heavy duty solid neutral link and neutral CT's.

MCCBs shall be compact (As approved by Engineer-in-charge), suitably designed to provide protection of motors, cables, busbars to suit rated current, unbalanced power distribution as required and with front adjustable overload, short circuit and minimum electrical endurance shall be as per IEC 60947-2 clause no. 7.2.4.2 & table no.8.

MCBs shall conform to IEC60898/ IS 8828 (latest) and, with breaking capacity 10 kA at 415 V AC, current limiting type lower powerloss appx 40%-70% of the stipulated value and suitable for magnetic releases operating between 3 to 5 times rated current for normal power distribution application and 5 to 10 times rated current for motor application duty, with minimum Electrical endurance shall be as per IEC60898.

Panel/ board design shall be compact and components / accessories of compact sizes be used to economise the room space available. Employer reserve the right to seek compact items inplace of larger ones

All incomer ACB's shall be provided with minimum 2 NO + 2 NC auxiliary contacts and all MCCBs (wherever required) shall be provided with 2 NO + 2 NC auxiliary contacts, and there should be provision to add min. 6 Auxiliary contacts.

All 4-pole ACBs shall have fully rated neutral pole

The panels shall be fitted with Clean Agent based panel flooding system.Scheme of Clean Agent based panel flooding system shall be got approved by Engineer-in-charge before proceeding with manufacturing and assembly. The holes arrangement shall be cordinated with Gas flooding system vendor/manufacturer.

All incoming and outgoing MCCBs shall have minimum ON, OFF & Trip. Phase indication (Red, Yellow, Blue) shall be used for incoming feeders only

Incomming & all outgoing feeders shall be provided Energy meter as per PVVNL guideline with necessary Circuit MCBs and suitable size CTs.

All Panel and DBs shall have Surge protection device in Incoming feeders with suitable circuit breaker.

All hinged door shall be earthed through minimum 2.5 sqmm braided copper wire.

All parameters as defined below shall be 415 ± 10% volt, 50 ± 3% Hz, 3 Phase, 4 wire System.

Various panels/ boards as given below:

ITEMS REQUIRED FOR MDB (PD Activity) PD-DB-1 for Sec-51 Station Incomer

1 no. 1600 A, 415V, 50kA, 4P draw out Electrically operated Motorised ACB complete with:

1- set Red, Green and Amber for ON, OFF, TRIP & Spring Charge indicating lamps

1- set of three phase indicating lamps (Red, Yellow, Blue)

TNC switch with key spring return

4 nos. cast resin current transformers of 1600/5 ratio with energy meter as per PVVNL guideline

Lockable Emergency Stop Push button with contact

Microprocessor based release having variable range of overcurrent, short circuit, UVR and earth fault protection with time log facility for each of the fault for achieving discrimination along with distinct fault indication through LED's. Release shall be self powered, true RMS current, Internal fault indications, Overload & Earth fault indications etc.

230 V AC shunt trip coil

230 V, AC Motor wound spring closing mechanism

Surge protection device with MCB as required.

Terminals to receive alum. XLPE armoured cables

BUSBAR

Electrolytic high conductivity Copper three phase and neutral busbars rated at 1600 A as per specification, suitable to with stand symmetrical fault level of 50 kA at 415 V. The neutral busbar shall be of 100% capacity.

Outgoings

2 no. 630 A, 415V, 50kA, 4P draw out Electrically operated motorised ACB complete with:

TNC switch with key spring return

1- set Red, Green and Amber for ON, OFF, TRIP & Spring Charge indicating lamps

3 nos. cast resin multi ratio current transformers of 630/5 ratio with 5 VA Burden & Class 1 for metering

Microprocessor based release having variable range of overcurrent, short circuit, UVR and earth fault protection with time log facility for each of the fault for achieving discrimination along with distinct fault indication through LED's. Release shall be self powered, true RMS current, Internal fault indications, Overload & Earth fault indications etc.

230 V AC shunt trip coil

230 V, AC Motor wound spring closing mechanism

Terminals to receive alum. XLPE armoured cables

1nos. 400 A, 415V, Ics= 35 kA, 4P MCCB’s with variable overcurrent , short circuit & Earth Fault Protection with 3 nos. cast resin multi ratio current transformers of 400/5 ratio with 5 VA Burden & Class 1 for metering (as per PVVNL guidelines)

2 nos. 250 A, 415V, Ics= 35 kA, 4P MCCB’s with variable overcurrent , short circuit & Earth Fault Protection.3 nos. cast resin multi ratio current transformers of 250/5 ratio with 5 VA Burden & Class 1 for metering

Clean Agent based Gas Flooding System for Sr.no. 12.0

PD-DB-2 for Sec-83 Stations

Incomer

1 no. 800 A, 415V, 50kA, 4P draw out Electrically operated ACB complete with:

1- set Red, Green and Amber for ON, OFF, TRIP & Spring Charge indicating lamps

1- set of three phase indicating lamps (Red, Yellow, Blue)

TNC switch with key spring return

4 nos. cast resin current transformers of 800/5 ratio with 5 VA Burden & Class 0.5S for metering as per PVVNL guidelines.

Lockable Emergency Stop Push button with contact

Microprocessor based release having variable range of overcurrent, short circuit, UVR and earth fault protection with time log facility for each of the fault for achieving discrimination along with distinct fault indication through LED's. Release shall be self powered, true RMS current, Internal fault indications, Overload & Earth fault indications etc.

230 V AC shunt trip coil

230 V, AC Motor wound spring closing mechanism

Surge protection device with MCB as required.

Terminals to receive alum. XLPE armoured cables

Busbar

Electrolytic high conductivity Copper three phase and neutral busbars rated at 800 A as per specification, suitable to with stand symmetrical fault level of 50KA at 415 V. The neutral busbar shall be of 100% capacity.

Outgoings

1 nos. 400 A, 415V, Ics= 35 kA, 4P MCCB’s with variable overcurrent , short circuit & Earth Fault Protection.with 3 nos. cast resin multi ratio current transformers of 400/5 ratio and energy meter as per PVVNL guidlines.

4 nos. 250 A, 415V, Ics= 35 kA, 4P MCCB’s with variable overcurrent , short circuit & Earth Fault Protection with 3 nos. cast resin multi ratio current transformers of 250/5 ratio with energy meter as per PVVNL guidline.

3 nos. for 160 A, 415V, Ics= 35 kA, 4P MCCB’s with variable overcurrent, short circuit & Earth Fault Protection with 3 nos. cast resin multi ratio current transformers of 160/5 with energy meter as per PVVNL guidline.

Clean Agent based Gas Flooding System for Sr.no. 13.0

Cabling

PD-DB-2 for Sec-83 Stations

Supply, laying, testing and commissioning of 1100 V grade, armoured, FRLSH, PVC sheathed, XLPE, Aluminium (Al) Conductor cables on existing trays/ walls/ columns / indoor / trenches including the cost of GI supports with suitable GI clamps, GI saddles, GI hooks, GI bolts etc. and including proper dressing of cables with UV resistant cable ties, markers, providing identification tags, earthing of glands armouring etc. complete as per specifications, as required and as below.

3.5 core 300 sq mm Al Conductor

Cable termination

Cable termination as per item 14 - including cost of supplying and fixing, Crimping lugs(Al or Bimetallic suitable for Cu as required), double compression brass glands, insulation tape etc. complete as per specifications and as required. Termination at one end of cable with all cores will be treated as one termination i.e. if the cables with all cores terminated at both ends it will be treated as 2 terminations. Termination should consist of bimettalic material where one side is copper an other side is Aluminium so that Aluminum cable can be terminated at copper bus bar. 3.5 core 300 sq mm Al Conductor

For Al cable to Cu busbar (Panel)

For Al cable to Al busbar ( Dry type transformer)

Cable Tray Supply & installation of Prefabricated, perforated GI cable trays continuously connected including horizontal and vertical bends, reducers, tees, coupling plate and nut bolts, washers & all material required for installation i.e Tie Rods, GI angles, Channels, earth link etc, conforming to Technical Specifications, complete as required. (With Double Reverse flange - Heavy duty) Note : Hot Dipped Galvanised Iron (HDGI) suspenders and necessary anchor fasteners or any other fabricated item of any size as approved is included in this item and shall not be paid separately 400 mm wide x 50 mm deep

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