PROVN OF VOLTAGE STABILIZER AND APFC PANELS AT CERTAIN WATER SUPPLY INSTALLATION AND ALLIED WORK AT BB CATT, SRINAGAR

Supply, installation, testing and commissioning of Servo controlled voltage stabilizer 400 KVA ( Confirming to BIS 9815:Part1 :1994) Three phase,50 Hz, Naturally Oil cooled, indoor, unbalanced type, copper wound, metallic body duly powder coated with lifting Hooks four nos , digital display type, relay free smooth and silent operation with 1st filling of Transformer oil (ISI marked, BDV value not less than) up to level having following specifications:-

(i) Input voltage 300V-480V, (ii) Output voltage stabilized at any deigned/desired voltage 415V ± 2.5%(adjustable) (iii) Rated frequency 50 Hz (iv) No distortion in wave form (v) Response time not to exceed 20 mille seconds (vi) Sensitivity (±) 1% (vii) Rate of correction 8 Volt/second (viii) Efficiency more than 98% (ix) Type of load : three phase, unbalanced type (x) Digital display Voltmeter/Ammeter with multifuctional meter

PROTECTIONS :- (i) Over load/Short Circuit protections (ii) High & Low voltage cut off (iii) By pass arrangement in case of emergency (iv) Single phase preventor & spike and surge protection

DIGITAL INDICATORS :- (a) Power indicator (b) Voltage indicator (c) Frequency meter (d) Power factor indicator (e) Ammeter, Voltmeter, Tempaerature meter (f) Phase sequence indicator (g) Oil level indicator

Supply, installation, testing and commissioning of OEM built indoor type 250KVAR APFC Panels having circuit Breaker,Capacitor Duty Contactor Conforms to IS / IEC 60947-4-1 & IEC 60947-4-1. Delatching type early make contacts, Separate termination for damping resistors, Encapsulated damping resistor assembly, Common coil for 50 & 60Hz application, Low pick-up VA consumption, RoHS compliant. APFC Relay Features: 3 Phase Current and Voltage measurement, PF display - 3 Digit after decimal, Individual harmonics measurement up to 31st order, Dual PF setting for Mains - DG application, Communication through Inbuilt MODBUS RS-485 Protocol, Suitable for LT as well as HT side sensing. Power capacitor The capacitors shall be encapsulated in an aluminium can with Over current withstand capability 2.5 x In, Operating losses 0.45 W/kVAr, Peak Inrush current withstand capability 350 x In, Operating life 15000 hrs, Number of switching operations per year 200000 hrs, Max Temperature 65℃. All vital components of APFC Panel i.e capacitors, contactors, APFC relay should be same OEM make. Advenced Range Display with a built in RS 485 communication port. APFC relay shall be of same OEM make. APFC Panels shall be OEM make, machine pressed, dust and vermin proof, indoor type. APFC Panel should have insulated bus bar pan assembly made from copper of suitably rated capacity..The capacitor duty contactor shall be used for switching on and switching off operations in the capacitor banks. Also the capacitor used should be of SUPER HEAVY DUTY MPP TYPE WITH PENTA SAFETY, capacitors used should be ISI mark and having BIS certification. Approved make Havells, ABB, LK (formerly L&T) .The 250 KVAR distributed in steps of 4 stages (i.e 4x50KVAR + 1X25KVAR + 2X10KVAR + 1X5KVAR) each with configuration having auto switching system for each stage in the form of electro magnetic making and breaking of contacts, as per the varing load sensed by the micro-processor. The APFC panel shall essentially consists of the following :-

OUTER SHEL :- (a) The outer shell of APFC shall be made out of 3.15mm thick CRCA sheet steel free floor standing (11 tank power coating process to provide better protection against corrosion) & MS angle section 50x50x6 mm frame factory fabricated with front & back open able, single door system lockable/ openable by keys from both sides having chromium plated 19 mm dia fancy locks, louvers & air vent gasket for natural flow of air. ‘U’ types gasket shall be used to make the outer shell completely vermin proof. The bottom of the outer shell contains a detachable plate having provision for entry of armoured cable of adequate size with glands. The outer shall be powder coated with pure polyester Siemens grey structural RAL 7032 shade. (b) The dimension of the outer shell should be adequate to accommodate inner shell described below giving minimum 75 mm space all around & shall be fabricated in such a way that the complete inner shell along with its control gears / accessories could be taken outside without disturbing outer shell. The outer shell shall be mounted on a zinc metal-coated stand having zinc coating not less than 100 microns. Provision of treaded earthing stud at bottom & lifting lugs of suitable size at top to lift the APFC panel safely shall be made. The degree of protection of outer shell shall be IP-54.

INNER SHELL :- (a) Inner shell shall be made out of 2.0 mm thick CRCA sheet suitably compartmentalized for front & back open able single door system lockable/ open able by keys from both sides having chromium plated 19 mm dia fancy locks, louvers & air vent gasket for natural flow of air. ‘U’ type gasket shall be used to make the inner shell completely vermin proof & to accommodate incomer/ outgoing MCCBs/MCBs and TPN copper bus bar of rating not less than the 1.5 times the rated capacity of the incomer MCCB. The TPN bus bar shall be insulated with colour coded heat shrinkable sleeve and shall be mounted on suitable size ‘F’ class insulators made of non hygroscopic, non combustible, track resistant, high strength FRP/MC/DMC material at an interval not more than 500 mm through out the length of the TPN bus bar. (b) The incomer MCCB as well as outgoings shall have copper TPN extension links of current carrying capacity not less than 1.5 times the rated capacity of individual feeders. The extension links shall not be less than 300 mm long supported on suitable size ‘F’ class insulators made of non hygroscopic, non combustible, track resistant, high strength FRP/SMC/DMC material having provision for termination of incomer and out going cables. All inter connections between the main bus bar as well as outgoing feeders shall be carried out with TPN copper bus bar of rating not less than 1.5 times rated capacity of individual outgoing feeders & should be insulated with heat shrinkable PVC sleeves. All control wires shall be with 2.5 sqmm multi strand copper conductors and shall be properly bunched, tied, ferruled for proper identification and crimped with adequate size of lugs. (c) The APFC panel shall have a bottom channel of size 75x40mm duly coated with zinc metal coating having thickness not less than 100 microns. A detachable predrilled gland plate of thickness 3.15mm power coated shade should be used at the bottom. The inner shell shall be of powder coated Siemens grey structural RAL 7032 shade. The degree of protection for inner shell shall be IP-42 & carry the following items :-

NCOMER :- (a) MCCB TP 630 Amps, Thermal magnetic, 50KA, O/L & S/C protection with spreader link set - 01 Nos. (b) Control MCB 6Amps, 10KA, C curve - 01 Nos. (c) Intelligent power factor controller 8 stage, MP Based, 230V Aux Supply - 01 Nos. (d) Indication lights, 240V (R/Y/B) - 01 Set (e) A/M slector swtich for Auto & Manual - 01 Nos,

OUTGOING :- CAPCITOR BANK - I :- (a) Capacitor Bank 50 KVAR (Super heavy duty MPP type Penta safety) - 04 Nos (b) MCCB TP 163 Amps, Thermal magnetic, 25KA, O/L & S/C protection with spreader link set - 01 Nos. (c) Cylinder capacitor warrior 440V AC, 25 KVAR - 08 Nos. (d) Illuminated switch for mannual switching & step indication - 01 set (e) Control MCB 6Amps, 10KA, C Curve - 01 Nos.

CAPCITOR BANK - II :- (a) Capacitor Bank 25KVAR (Super heavy duty MPP type Penta safety) - 01 Nos (b) MCCB TP 63 Amps, Thermal magnetic, 25KA, O/L & S/C protection with spreader link set - 01 Nos. (c) Cylinder capacitor warrior 440V AC, 25 KVAR - 01 Nos. (d) Illuminated switch for mannual switching & step indication - 01 set (e) Control MCB 6Amps, 10KA, C Curve - 01 Nos.

CAPCITOR BANK - III :- (a) Capacitor Bank 10KVAR (Super heavy duty MPP type Penta safety) - 02 Nos (b) MCCB TP 32Amps, Thermal magnetic, 25KA, O/L & S/C protection with spreader link set - 01 Nos. (c) Cylinder capacitor warrior 440V AC, 25 KVAR - 02 Nos. (d) Illuminated switch for mannual switching & step indication - 01 set (e) Control MCB 6Amps, 10KA, C Curve - 01 Nos.

CAPCITOR BANK - IV :- (a) Capacitor Bank 5KVAR - 01 Nos (b) MCCB TP 16Amps, Thermal magnetic, 25KA, O/L & S/C protection with spreader link set - 01 Nos. (c) Cylinder capacitor warrior 440V AC, 5 KVAR - 01 Nos. (d) Illuminated switch for mannual switching & step indication - 01 set (e) Control MCB 6Amps, 10KA, C Curve - 01 Nos.

M & L for earthing complete with galvanised steel earth plate electrode size 60 cm x 60 cm, 6 mm thick burried directly in ground vertically to a depth not less than 2.25 metres below ground level with top edge of earth plate at a depth not less than 1.5 metre below ground level, connected to galvanised iron or steel, earth strip 32 x 6 mm size by means of nuts, bolts check nuts and washers made of galvanised iron or steel, earth wire protected by galvanised iron pipe 15mm bore, medium grade and connected to main switch board or main control board as directed and including concrete pit in PCC 1:3:6 type C-1(using 20 mm graded stone aggregate), pre-cast RCC cover slab 30 cm x 30 cm x 10 cm with one lifting handle made of 8 mm dia MS bar funnel wire mesh, 20 mm bore galvanised iron or steel pipe medium grade for watering charcoal or coke and salt in alternate layers, necessary excavation and earth work in any type of soil complete all as shown in electrical Plate No 5 of MES Schedule Part- I and testing on completion . (Concrete pit shall be 20 cm to 30 cm away from main pit), complete all as specified and directed.

M&L for XLPE insulated, armoured heavy duty electric cable with aluminium conductor, 1100 volts grade, cross-sectional area laid in trenches / duct or fixed to wall / passing through pipe on pole with suitable size cable glands, crimping type cable lugs for stranded aluminum conductor of size 300 sqmm, 3 core cable, complete all as specified and directed.

M&L for XLPE insulated, armoured heavy duty electric cable with aluminium conductor, 1100 volts grade, cross-sectional area laid in trenches / duct or fixed to wall / passing through pipe on pole with suitable size cable glands, crimping type cable lugs for stranded aluminum conductor of size 300 sqmm, 3.5 core cable, complete all as specified and directed.

Excavation in trenches, not exc 1.5 metre wide and not exc 1.5 metre in depth for foundation, for laying pipe lines etc and getting out in soft/loose soil, complete all as specified and as directed.

Returning, filling in including spreading, leveling and well ramming in layers not exceeding 25 cm thick each, complete all as specified and as directed.

Removing surplus excavated material soil from site to a distance not exceeding 50 mtrs from starting point and depositing where directed at level not exceeding 1.5 metre above the starting point, complete all as secified and as directed.

M&L for dry river sand, laid in trenches for cable protection, as 8cm thick below the cable and 15cm thick above the cable, complete all as specified and as directed. Note :- Punned thickness of sand shall be measured & paid.

M&L for sub class 'B' brick covering protection to the eletric cable, laid dry, flat, transversally along the length of cable on sand cushioning with width equal to length of brick, complete all as specified and directed.

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