Electrical Works

Supply and fixing of 7 segment 8 way 63A TPN MCB sheet steel distribution board (Higher end) with metal / acrylic door cover flush type /surface type fitted with busbars and neutral links with single / three phase MCB outgoings and seperate 4 way provision for accomodating one no. 4 pole incoming MCB / Isolator and another seperate 4 way provision for accomodating one no. 4 pole ELCB / RCD (totally 8 ways in one segment) (3x 6 ways in each segment) and seperate provision for MCB / Isolators ( totally 24 nos.) for sub incomers in 3 segments with lable holder and provison for taking up cable for size not less than 35 sq.mm. with the following in flush with wall with earth connection only

Supply and fixing of 15 KVA single phase microprocessor controlled true online double conversion UPS system with three phase IN and three Phase out builtin isolation transformer and power factor correction with necessary no. of batteries for 2 hour backup time along with suitable interlinks and ms powder coated battery rack with necessary accessories.

supply and fixing of 70w vertical surface mounting die- cast aluminium housing well glass luminaries with high power LED as light source (warm white) (make: Havells/equivalent) MR

Suply and fixing of 50W Spot Light aluminium housing well glass luminaries with high power LED as light source (warm white) (make: Klite/equivalent) MR

Supply of ceiling suspended AHU-Double skin 11Tr 25mm Thick Puff Insulated panel with thermal break Hollow alluminium profile filed with PUF Outer skin will be 0.6 Pre coated GI-Half white inner skin will be 0.6mm plain GI *Leak proof Hinged service door *Pressure Measurement nozzless accross F-7 filters * The Blower static pressure - 100mm wc *Entering Dry Bulb Temperature -24 ' C *Entering Wet Bulb Temperature - 18 ' C *Leaving Dry Bulb Temperature - 11.3 ' C *Leaving Wet Bulb Temperature - 11.5 ' C The Below CFM should be achived at 85% of its fan RPM 11TR,4400CFM *Statically and Dynamically balanced AMCA Certified DIDW centrifugal fan with motor to be mounted on a common steel base on anti vibration spring mounts * Lamp,Limit Switch *Double Glazed Inspection window made from polycarbonate material each glazing to be minimum 6mm Thickness * Low Leakage Extruded aluminum aerofoil opposed blade type Bleed air damper for the manual operation (0 to 100 %)* Fan Motors shall be energy efficient (IE-4) and shall be 415=10% volts ,50Cycles three phase,totally enclosed fan cooled class F,with IP-55 Protection

B) Supply of 11 TR capacityCeiling Supsended ductable air conditioner high tech Outdoor unit with power saving high efficiency sturdy and rugged 1 No of scroll comprssor for each circuit with inbuilt internal thermal protector,internal pressure relief valve,Auto reset type HP/LP safety cut out to improve reliability of compressor and condenser shell be made of super slit high efficient aluminum fins mechanically banded to copper tubes condenser 'L' type coil to be rigidly fixed to unit frame with fasteners.imported condenser fan & fan blades to be statically and dynamically balanced to reduce noise and vibration.The fans are direct driven 3 or single phase motor with protection.Condencing temperature 130' F for the system operations.

Charges for Supply of Laminar air flow plenum at Full SS outer casing with 0.3 micron Aluminium Mini pleat HEPA Filter with 99.97% Efficinecy with SS 304 1.2mm Thickness Perforated Filters and Full SS Grill and Nitrile Insulation XLP Insulation with side through collar . Light cut out provided.

Supply and Fixing of washable type 90% Efficiency @10 microns MERV 8 Rating Pre-Filters at Return Air Duct Terminal 300 x 300,600x 600

Supply and fixing of hard drawn copper refrigerant piping of 1 1/8” dia interconnecting indoor and outdoor units with necessary fittings, supports etc.,

Supply and fixing of extruded aluminum powder coated supply and return air grilles/diffusers with volume control damper.

Supply and fixing of Duct Mouth Dampers

Supply and fixing of Flexible Canvas Connection.

Renewal by Supply and fixing of 50mm thick anti vibrating rubber pads.

Supply of power supply for outdoor to MCB 10 Sqmm copper flexible single cable.

Control pannel For operating the AHU Unit 2 x 1.5KW DOL Feeder with 20DU Cooling

4 Sqmm Single wire AHU Indoor to panel Board

Supply, Erection, testing and commissioning of 11KV 25 KA 630 Amps 3 Panel HT Indoor RING MAIN GEAR Switch board suitable for outdoor installation comprising two incomer panels with Air Break/ load Breaks switches and one outgoing panel with Vacuum Circuit Breaker complete as per TANGEDCO specification with Mechanical inter lock between incomers. 1. Supply and Erection of Draw out type 11KV 25KA 630Amps Horizontal draw out / Horizontal Isolation VACCUM CIRCUIT BREAKER filled with motor(230V AC) operated spring charged Mechanism, with ON and OFF mechanical Indicator Anti Pumping Device, 110V DC Shunt Trip and Closing Coils (DC source of supply to be derived from a power pack suitable for three Tripping and two closing operations incorporated on Incoming panel only) Mechanical Operation counter, 4NO + NC Spare Aux. Contact with contact multiplication Contactor for customer use. Automatic safety shutter, Mechanical close/Trip Knob, Mechanical ON/OFF Indication, Operating Handle, 230V AC to 110V DC Power pack operating Handle etc.-1No Operation counter, 4NO + NC Spare Aux. Contact with contact multiplication Contactor for customer use. Automatic safety shutter, Mechanical close/Trip Knob, Mechanical ON/OFF Indication, Operating Handle, 230V AC to 110V DC Power pack operating Handle etc.-1No mechanism , 2 NO+ 2NC Aux.

10. 630Amps Copper Bus bar PVC sleeved & required panel Earthing 11. Common for Switch gear MCB's for AC/DC Control Heater ON/OFF switch with space Heater and thermostat, single phases switch socket, cubicle illumination TL lamp, Door switch fully covered Test Terminal block of IMP make(wherever applicable)

12.MS Sheet steel Enclosure for outdoor Installations powder coated with siemens Grey paint finish. 13. Provision through bottom entry to receive Incomer and outgoing cable excluding cable glands and cable Termination Kit (Make: Megawin/Siemens/or Equivalent)

6) Protection : TP IDMT 2 OC + 1 EF Relay with Highest inst. Elements. 7) Breaker ON/OFF/AutoTrip/Healthy Trip/Spring charged Indication 8) Phase Indicating Lamps R,Y,B 9)Control wiring 10) 800Amps copper bus bar PVC sleeved and required panel copper 13) Common for switch gear : MCB’s for AC DC switch gear, MCB’s for AC DC control Heater ON/OFF switch with space Heater and thermostat single phase socket, cubicle illumination lamp. 14) MS sheet enclosure for Indoor Installation powder coated with paint shade Siemens Grey, paint finish provision through Bottom entry to receive Incoming and Outgoing cable excluding cable glands and cable termination kit. (Make system control/Megawin)

Supply, Erection, Testing and Commissioning of 500 KVA,11KV/0.433V Dyn11,ONAN, Indoor Type, double wound, Energy Efficient Transformer with OFF Circuit type. distribution transformer confirming to relevant IS.1180 Level-2 and fitted with the following. 1.Rating &connection diagram plate 2.Earthing terminal 3.Lifting lugs for whole Transformer 4.Cover lifting lugs 5.Oil level gauge-plain with level marking 6.Bottom filter cum drain valve with plug 7.Top filter valve with plug 8. pocket for Thermometer 9.Oil Conservator with drain plug 10.Oil filling point with cap on the conservator 11.Air release plug 12.Silicagel breather 13.Monogram plate 14.Explosion vent with diaphragm 15.Transformer oil 16.Under base channel with skids 17.Oil temperature indicator with A/T Contacts

18.Winding temperature indicator with A/T Contacts 19.Marshaling box 20.Bi-directional rollers. 21.Buchholz relay with A/T Contacts 22.DetachableRadiators. 23.Off circuit tap switch 24.Conservator shut off valve 25. Neutral CT Special accessories The transformer should be supplied with first filling of oil Terminal arrangement:- HV-Cable box,LV-Flange to suit bus duct. All removable covers shall be provided with weather proof hot oil resistant, resistance gaskets, to prevent leakage of water in to core, and oil from the tank with Transformer plinth construction of 1000KVA as per IS 1180 (Make CREL/ROWSON /Voltech)

Supply and Laying of 3C x 185 Sq.mm.(UE) 11 KV HT XLPE cable in a suitable 6" duro pipe to be excavated at a depth of 1 metre and covering the cable completely and refiling the earth to make good

Supply and clamping of 11KV 3 core 185sq.mm (UE) XLPE HT UG cable in Wall or the existing trench in HT Room

Supply and providing cable end termination suitable for 11KV 3 core 185 sq.mm XLPE HTUG cable with necessary indoor type heat / cold shrinkable joint kit and accessories (Make : Ray Chem. / M Seal)

Supply and clamping of 1 runs of 3.5C x 400 sqmm of PVC armoured LTUG cable on post on wall with MS clamp. (Tr to MV Panel)

Supply and providing cable end termination of 3.5 C x 400 sqmm PVC LTUG Aluminium armoured cable with necessary aluminium cable sockets by crimping etc. with electrical connection

Supply and fixing of Brass cable gland for 3.5 C x 400 Sq.mm PVC armoured LTUG aluminium cable with earth connections.

Renewal by Supply and Laying of 1 run of 3 1/2 x 240 sq.mm. PVC LTUG armoured cable on post or on wall with MS clamps.

Renewal by Supply and fixing of brass cable gland for 3-1/2 x 240 sqmm PVC armoured LTUG cable with earth connection

Renewal by Supply and providing cable end termination of 3-1/2 X 240 Sqmm PVC LTUG Alu.Armoured cable with necessary alu.Cable sockets by crimping etc with electrical connection complete

Supply and providing of Plate Earth electrode with 3mts of Class ' B ' GI pipe 40 mm and 3mm thick of copper plate of size 24" x 24" x 3 mm riveted to the pipe at one end and providing a funnel at the top end with 2runs of 25mm x 3mm copper flat from the copper plate to the top of the electrode and embedding the above electrode in a pit to be excavated at a depth of 3mt and of size 60cm x 60cm and filling up the pit with charcoal, salt, sand.

Supply and run of 25mm x 6mm GI Flat Down Conductor with necessary clamps / supports on wall / floor / ground for earth connection

Supply and run of 50mm x 6mm GI Flat Down Conductor with necessary clamps / supports on wall / floor / ground for earth connection)

Design, Supply, erection, testing and commissioning of 800A draw out type floor mounted MV cubical panel board suitable for operation on 415 V 3 phase, 50 Hz A.C supply, dust and vermin proof and accommodating the following ACB as Incomer unit & Bus-coupler with the following items of work complete to satisfy the latest IE rules and CEIG guidelines with Bus bar chambers, Main switches chambers and cable entry chambers. Bus bar chamber: Supply and fixing of suitable bus bar chamber made up of 16SWG MS sheet steel(1.8mm) with 4Nos. 3” X 1/2” tinned copper bus bar for 3 phases and neutral and 2 Nos. of earth bus of size 1” X 1/8 tinned copper bus(25mm x 3mm) on suitable bus bar insulator(Epoxy insulator) with maximum creepage distance and supported on MS Base channel frame work of size 4”X 2”X ¼”–1Set Main Switches Chamber: Incoming 1)Supply and fixing of 1 Nos. 800 A 4 pole 433V LT ACB confirming to IS13947–2 IEC 60947–2 with suitable capacity and breaking capacity of drawout 50 KA breaking c capacity with all accessories for standard horizontal manual draw out type ACB equipped with auxiliary contacts and all accessories for closing and opening operation with Microprocessor Based SR 18 G relay, over current trip device adjustable to LTD, STD and release for over current protection UV release with time delay, EF release short circuit protection, Mains CTs for 3 phases lockout, features, separate mold base for each pole for

easy maintenance all relevant protection safety accessories as per CEIG, IE rules in force with inter connection and terminations as required in specification

Outgoing 1. 400A MCCB — 3 Nos 2. 250 A MCCB - 2 Nos. Inter connecting the all LT ACB’s and Switches to bus bar with suitable insulated tinned copper flats and painting/PVC sleeve color coding of phases and neutral indication. Double Earth connection of the switches and ACB’s to earth bus using suitable tinned copper flats by 2 runs of 1” X 1/8”. Supply and fixing of RYB LED lamp arrangements with toggle switches to control each phases and with rigid connection in suitable separate compartments within the cubicle as per CEIG rules with 1set,

Supply and fixing of danger board with Siemens grey powder coating with super scribing the names of places to which supply is fed feeder sizes of cables direction of cables etc. Erection of panel board complete with suitable foundation bolts and nuts including suitable M.S Channel, concreting ,testing and commissioning (L&T, SIEMENS,ABB)

Supply and erection of 100 KVAR 415/440Volts 50Hz 3 Ph automatic power factor correction panel, 8 stage, (at 0.95 lag), made up of powder coated, 14/16 SWG CRCA sheet steel enclosure with 1 1/2" x 1 1 1/2" x 1/2" AI Frame work with RCC concreting foundation and bolted to masonry pedestal with 250A TPN MCCB as incoming (L&T/Siemens/C&S) with Delta Connected capacitors (BCH/EPCOS) MOO Type operating in multiple stage with 3 current and Voltage Transducers (CVT) at the phases simultaneously to activate the desired power factor switching time between steps 120 seconds, switching off time in case of fault 3 seconds with a LCD display to show the following Parameters. a. Vr – R phase Line Voltage b. Vy – Y phase Line Voltage c. Vb – B phase Line Voltage d. Ir – R phase Line current e. Iy – Y phase line current f. Ib – B phase Line Current g. KW – Present Kilo Watts h. RKVA – Present KVAR Demand i. KVA – Present KVA j. PF – Present Power Factor k. Number of Capacitor bank ON/OFF

l. Provision to indicate the imbalanced load provision to indicate the change in phase Sequence n. The APFC Panel Should also have built in protection for current imbalance. For high Voltage/Low Voltage cut off, single phase Preventer, provision for inductor coil to cater the in-rush currents, line surges, Current Limiters, Current Sensor, etc., with connection complete and as per the relevant IE Rules. Eight Stages of Automatic Power Factor control panel with necessary connection.

SUB-STATION EQUIPMENTS:- Supply and Erecting of safety accessories.SR.XIII PART “M” 8 Item (a) to (i) .

Supply, fixing, testing and commissioning of AC Chargeable emergency lamp 2 x 11W PL lamp with all connected accessories

Supply and installation of 2.5mm thick Rubber Mat with ISI suitable for 1.1KV installation confirming to IS 15652 (5Nos=1set)

Supply and Providing approved make First aid box complete with all first aid medicines

Supply and providing shock treatment chart fixed in glass frame (Tamil and English)

Supply and fixing of the 4nos fire buckets stand suitable for 4 nos fire buckets made out of 40 x 40 x6mm MS angle

Supply of hand gloves 11 KV grade

Supply and installation of Danger Board as required by the electrical authorities

Supply and erection of Fire extinguisher Co2, 4.5 Kg confirming to TAC norms

Earth Discharge Rod

charges for applying CEIG safety certificate with neccesary drawing arrangements

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