Job Work

Amount

3. M&L for disconnecting connected cables, and supplying, installing, testing and commissioning of factory made LT cubical double door panel, Indoor type, of Suitable to accomodate the following accessories made out of CRCA sheet 2 MM thick duly powder coated with Seimens Grey Shade RAL 7032, totally enclosed, dust and vermin proof outer cubicle. Inner cubicle should be made out of 2 MM thick CRCA sheet with working voltage of 415V, 50 Hz, 3 phase 4 wire fully compartmentalised with single door system for each compartment.. Bus bars provided shall be adequately supported on insulators to withstand dynamic stresses due to short circuit current and shall be suitably colour coded with heat shrinkable sleeve for phase indication. The standard phase arrangement when facing the switchgear shall be R-Y-B from left to right. The bus bar connections and their insulated supports shall be mechanically strong, and shall withstand all the stresses which shall be imposed upon them in ordinary working due to fixing, vibration, fluctuation in temp., shot-circuit or other causes. Provision shall be made for expansion and contraction of the bus bars and connections with variation of temp.

Internal wiring should be done with multi-stranded copper conductors and shall be properly bunched, tied, ferruled for proper identification, crimped and shall be connected with suitable lugs and PVC sleeves, etc. The bottom of the panel should contain detachable plate having provision for entry of armoured cable of adequate size with glands. The cubicle incomer MCCB as well as outgoings shall have copper TPN/TP extension links all MCCBs with extended Rotary Handle. The cubicle should be inclusive of following : Location : At P-20 AC Plant at Tunir area 1. INCOMING : (a) Air circuit Breaker, 800 AMPS 50 KA, Manual draw out (MDO) Relay type A-type Make : Havells Cat No-BN084CMOD0D0AG0 or equivalent in ABB/Siemens/Legrand -01 Nos

2. OUTGOING : (a) MCCB TPN, Type DN3-400D 36kA, 400 AMPS with thermal magnetic release, Ics = 100% Icu, Adjustable Over Load setting: 0.8 - 1.0 x In, Adjustable Short Circuit setting: 6 - 10 x In Make : L&T Cat No. CM94105OORT1OG or equivalent in ABB/Siemens/Legrand - 04 Nos (b) Spreader Terminals for MCCB TPN, DN3-400, Make : L&T Cat No. - CM98066OOOO - 04 Set of Eight (c) On Load Changeover Switch, 4 Pole - 800 Amps extendable handle type Make : L&T Cat No.CO48000OOOO or equivalent in ABB/Siemens/ Legrand - 01 Nos (d) Operating Handle for changeover of 800 Amps, c/o frame 45 (800-1000A) Make: L&T Cat No.CX50001OOOO - 01 Nos

(e) Multi Function Meter, flush type - 96X96 MM size Make : HPL Cat No. NEMFPCT2EMFA1 EMFIS PLUS or equivalent in ABB/Havells/HPL - 01 Nos (f) LED Indicators Ribbed Lens with Trimmed Collar Red Yellow and Blue - 2 Each (g) Base frame for cubical for mounting made out of 40x40x6mm equal angle iron duly painted. (h) 6 Amp MCB SP for back supply for Multifunction meter and LED indicator lamps Make : L&T/HPL/Havells/Legrand )- 02 Nos (j) Electrolytic copper bus bar 800 AMPS rating with suitable colour coding sleves on the top of busbar (k) Base frame for cubical mounting made out of Suitable size equal angle iron duly painted. (l) Foundation for the panel should provided with PCC 1:4:6 at a depth of 150 MM below G.L. and 100 MM above the G.L. with slot openings for I/C and O/G cables. Note : All old retrieved material will be the property of the contractor as per schedule of credit.

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