Providing HT supply and Lightning arrestor arrangements to Super Speciality Blocks in Government Medical college Hospital at Thoothukudi.

Amount

Supply and erection of 22kV 2 pole structure comprising 2 numbers 33feet with RS Joist of size 200x100x5.7mm centre to centre 10 feet width with tie and support frame by 100x50x6mm RS channels, cross bracings by 50x6mm RS angles with requisite heavy duty clamps, bolts & nuts to support the switch gears, insulators, 0 copper jumpers and accessories to receive and distribute the 22 kV 2Pole structure of consumer side and painting of all metal parts with base coat of red oxide and approved paint one coat each as per engineer in charge with supply and erection of following HT accessories as per I.E rules and CEIG rules and regulations

a) 1set 22 kV gang operated double break AB switch complete with connecting rod, operating handle, guides, ets., on 100x50mm channel frame.

b) 3 Nos lightning arrestor for 22kV system on channel frame

c) 1 set (each with 3Nos)DO/HG fuse assembly on channel frame.

d) 6 Nos 22kV pin insulators with metal parts on channel frame to maintain sufficient clearance for jumpers as per rules.

e) 1Set of 3Nos 22KV strain disc insulators with Metal parts on suitable top channel 100mm x 50mm x6mm to receive the EB supply and to feed 2 Pole structure. Supply and fixing of required cross bracing made of size 50x50x6mm MS angle to keep the structure in stable condition.

Providing necessary HT connection and jumper Connection from TNEB structure to consumer 2Pole structure with ACSR conductors “O” HDBC Copper conductor for giving necessary connection and jumpering from stain disc insulators, AB switch, lighting arrestor, HG fuse Through pin insulators and to transformer Bushing etc., complete with colour coding.

Design manufacturing Supply, erection, testing, commissioning and handing over of 800A, 25kA, 22kV HT four panel Outdoor Vacuum Circuit Breaker panel (EDO) comprising of one number 800A, 25 kA, 22kV VCB as incoming and 3 Nos 800A 25kA, 22kV VCB as outgoing for outdoor installation.

Each panel comprising 1. Draw out type 800A, 25 kA, 22 kV Horizontal Draw out / Horizontal isolation Vacuum Circuit Breaker with Motor (230V AC. – AC source of supply to be arranged purchaser) operated spring charged mechanism. Anti Pumping Device 110V DC shunt trip and closing coils (DC source of supply to be derived from a Power Pack suitable for 3 tripping and two closing operation counter, 4 NO + 4 NC spare Aux, contact for customer use, automatic safety shutter, mechanical close / trip knob, mechanical on/off indication, operating hand, 110V AC – 110V DC Power Pack etc (Incoming 1No. 800A Outgoing 3Nos of 800A).

2. 22kV /√3 / 110V /√3 – Three phase, 3 Limb 200VA Class 1 Resin Cast Draw Out type Potential transformer complete with HT and LT HRC Fuses (Incoming – 1 No.) 3. Current Transformers of 200 /5-5 Amps. Dual Core (Core 1 -15 VA class 1 for metering and core 2-15 VA 5P 10 for protection) for incoming 3 Nos, current transformers of 80/5-5 Amps dual core (Core 1-15VA Class 1 for metering and core 2 – 15VA 5P 10 for protection) for outgoing 3 Nos.

Digital Trivector made of L&T / Secure make (Incoming 1 No)

Digital power factor meter – 1 No.

Digital Frequency Meter (Incoming 1 No.)

5. Protection : TP ND IDMT 2 OC + 1 EF Relay with highest Instt elements similar like mega with type MCDG 61. (Incoming 1 No.)

6. TP ND IDMT 2 OC + 1 EF Relay similar like Megawin type MCDG 31 Master trip relay Megawin MVAJH 13 (Incoming 1 no. Outgoing 3 nos.)

7. Breaker ON/OFF Auto trip / Healthy trip / Spring charged indication (Incoming 1 No. Outgoing 3 Nos.)

8. Phase indicating Lamps R, Y and B (Incoming 3 Nos and outgoing 3 sets of 3nos each.)

9.800A Copper Bus Bar PVC sleeved and required panel copper earthing.

10. Control Switch TNC (Incoming 1 no. Outgoing 3 Nos.).

11. Trip Circuit Healthy Push Button (Incoming 1 No. Outgoing 3 Nos).

12. Common for Switch gear, MCB’s for AC DC Control Heater ON / OFF Switch with space heater and thermostat single phase switch socket, cubicle illumination lamp, Disconnecting type terminal Block etc. 13. MS sheet enclosure for outdoor Installation Powder Coated with paint shade Siemens Grey.

Provision through Bottom entry to receive Incoming or outgoing cable excluding cable glands and cable terminal kit. (Make : System control /Mega win / Pentagon/ Equivalent)

Supply, erection, testing and commissioning of 1000 kVA, 22 kV / 433 V Outdoor Oil Cooled Transformer with off Circuit (As per IS 1180-Part I as amended Level 1) Distribution Transformer with Plinth mounted with suitable HT & LT Cable Entry Boxes, Copper Extension for Cable End Termination for HT & LT sides, Bucholz Relay, Marshaling Box, etc. of Dyn11 vector group, ONAN cooling, copper wound with a tapping range of +5% to -5% in 5 steps with standard fittings and accessories and fitted with the following:

a) Conservator with shutt of valve. b) Dehydrating slilicagel breather. c) Conservator drain plug valve. d) Tank drain plug value. e) 4 Nos Plain rollers. f) Thermometer pocket with thermomoter with capillary tubing for maximum reading position. g) Drain plug valve.

h) Filter Valve i) Oil filling with end cap j) Oil Level gauge k) Two body earthing terminal l) Rating and terminal marking diagram plate.

m) Lifting hooks / Lifting eyes / Jacking pad to facilitate movement to transformer and easy ground level. n) Off load hand operated tap changing switch at standby height from ground level. o) Tapping on primary winding for voltage variation +5% to - 5%. p) Neutral on L.V side to be available for 4 wire supply and brought out truf pushing for earthing. q) Air release device.

r) The transformer should be supplied with first filling of oil. s) All removable covers shall be provided with weather proof hot oil resistance gaskets to prevent leakage of water into core, and oil from the tank. t)100 / 5 A ratio Tape Insulated Ring Type "BPL" Low Tension Current Transformer (AE make / Eq) with Rated Burden of 15 VA , Accuracy Class of 5P10 in suitable Metallic enclosure for transformer neutral - earth link terminal with necessary connections complete. (Make: ROWSONS / Kirloskar electric company/ IPL).

Design supply, erection testing and commissioning of 1600Amps cubical panel floor mounting type dust and vermin proof MV panel board of suitable size made up of 16SWG CRCA sheet as per the CEIG guidelines and latest IE rules comprising the copper busbar, single busbar system, cable chamber, interconnection, painting, earthing, protection relays etc. and comprising the following switches:

Incomer -1&2 (EB Side)

1600Amps 4Pole 50kA electrical draw out type Air circuit breaker with shunt release shutter assembly, door interlock and other accessories.-2No EB incoming bus bar: copper bus bar rated for 1600Amps 4" x 1/2" for 3 phases & neutral.

Instruments Panel

Providing TNC switch, emergency lockable push button, Demand controller with RS485, Ammeter, Voltmeter, Instantaneous over current, earthfault relay (2 O/C+ 1 E/F), restricted earth fault relay, Master trip relay and necessary CTs, control MPCB/MCB/ ELCB/RCBOs, RYB Indication lamps and “ON/OFF/Trip" indicating lamp, Class "B" surge protection device with control fuses etc. and also refer the specification and SLD.

Buscoupler :1600Amps 4Pole 50kA electrical draw out type Air circuit breaker with shunt release shutter assembly and other accessories with interlocking- 1 No.

Buscoupler :1250Amps 4Pole 50kA electrical draw out type Air circuit breaker with shunt release shutter assembly and other accessories with interlocking - 2 Nos.

Outgoing:

800A 4P ACB 50kA – 4Nos

630A FP MCCB switch – 2Nos

250A FP MCCB switch – 2Nos

400A FP MCCB switch – 4Nos

With necessary interconnections, "ON,OFF & TRIP" indication lamps, providing digital type multi function meter / Ammeter (only APFC feeder) with RS485 and necessary CTs, control MCB/MPCB/RCBOs etc. in all outgoing feeders and all as per the relevent standards. Both the incomers (EB & DG) and buscoupler should be electrically & mechanically interlocked as per the interlocking table.

All switches and the ACB's should be given double earth connection by runs of 4"x1/2" copper flat. And two numbers 4"x1/2" copper earth bus must be run around the panel as per IE rules. All live parts of the bus switches etc are to be shrouded with suitable thick hylum sheet and SMC support insulators should be with maximum creepage distance as per IE rules.

All the out going feeder, bus bars should be extended for easy termination of LTUG cable and suitable removable type gland. All the copper flats inside the panel should be provided with heat shrinkable sleeves and lead coating in the termination points.

Also it shall be suitable for the automatic power transfer from anyone source to other and all other as per the enclosed SLD and specification. All MCCBs should have two (spare) potential free contactor for monitoring ON, OFF & TRIP status of each through BMS and all as per the specification and drawings.

Incoming feeder MDC / MFM should have the facility to monitor Harmonic THD and individual harmonic display+ Regular parameters like V, I, kVA, kVAR, KW, KWH, kVARh, PF, Freq, Max, AVG etc. All Outgoing Feeders in Main LT panel shall be with MFM monitoring V,I, KWH, kVARH, PF with RS 485 BMS integration. All the metres to be wired and terminated at common metre chamber / marshalling feeder of each panel section.

Panel should be having following specifications: i) All panels incoming breaker and including outgoing breakers of only MPCC panel, irrespective of the rating should be provided with microprocessor based over current, time adjustable short circuit and earth fault releases (LSIG).

ii) All MCCBs (except the above point) up to 250A should be provided with adjustable thermal & magnetic type and all the above rated breakers should be provided with microprocessor type and MCB shall be C-curve except UPS outgoing circuits which should be provided with D-curve MCBs with minimum of 10kA short circuit rating. iii) All panels should be complied with the standard IS 8623 / IEC 60439. (PTTA)

vii) All live parts should be shrouded by FRP transparent polycarbonate sheet of 2mm thick. viii) Surge Arrester to be provided in all panel's incoming feeder and the same should be connected to the main earth grid directly. All panel should have Class-B+C type SPD except MPCC panel which should be provided with Class B type SPD.

ix) All panel's bus bar should be capable of either withstanding continuous rated Amps rating or to withstand the fault current for 1Sec., whichever is higher.

x) All MCCBs shall be fixed type and should have LOTO provision. xi) All MCCBs shall have rotary handle mechanism and spreader wherever necessary. xii) All meters shall be digital type. All panels incoming feeder should have Multi function meter with RS 485 for monitoring the parameters like VLL, VLN, AMPS, HZ, PF, KW kVA kVAR, KWH kVAH kVARH, ITHD, VTHD, RUN HOUR, Max, Avg. etc...

xiii) Form 4A construction should be followed for all the panels The cubical panel should be mounted over the MS channel of size 3" x1 1/2" x 1/2". The cubical panel should be painted with anti corrosive red oxide and with powder coated epoxy paint. The capacity of the switch, cable direction, place of feeding shall be indicated clearly in all the switches. The operation and maintenance manual for the metering instruments and the ACB switches shall be handed over to the department without fail.

Supply and laying of 3C x 300 sq.mm HT (E) XLPE 22 kV in a trench to be excavated at a depth of 1 metre putting 0.15 mt layer of sand and covering the cable completely with cement concrete RCC cable trough and refilling the earth to make good.

Supply and providing HT Cable Outdoor Termination suitable for 3core 300 sq.mm HT Cable Outdoor Terminations 22KV(E) Screened XLPE Cables-EPKT 5373 and accessories with termination complete

Supply and laying of 31/2 x 120 sq.mm PVC armoured LTUG cable in a trench to be excavated at a depth of 0.75 metre putting 0.15 metre layer of sand and covering the cable completely with bricks and sand and refilling the earth to make good.

Supply and clamping of 3 ½ x 120 sq.mm PVC armoured aluminium LTUG cable on post or on wall with MS Clamps.

Supply and fixing of brass cable gland for 3½ x 120 sqmm PVC armoured LTUG cable with earth connection

Supply and providing cable end termination of 3½ x 120 sqmm PVC LTUG Aluminium armoured cable with necessary aluminium cable sockets by crimping etc. with electrical connection complete

Supply and fixing of perforated inward bend GI tray (300mm width x 100mm 1.6mm thickness) bend of 15 mm with joint plates and bolt nuts fixed at 10 feet above ground level with suitable angle iron support and finished with aluminium paint.

Supply and fixing of 65mm (2½") G.I. pipe (Class B) of 6 metre length with 300mm x 300mm x 6mm MS base plate duly welded at the bottom with concreting & masonry work for fixing the post (for cable tray)

Design, Supply,Installation, Testing of 1600A, 3P+100% N 4W, Sandwich type Aluminium Bus duct, with external Aluminium Earthing of 50x6mm 2 runs, enclosure with 1.6mm Galvanised iron with powder coated RAL 7032, Indoor IP55 protected, temperature: ambient 40 °C + rise 55 deg C for 130A/Sqcm, halogen Free, complete as per IS specifications.

Design, Supply,Installation, Testing of 1600A, 3P+100% N 4W, Sandwich type Aluminium Bus duct, with external Aluminium Earthing of 50x6mm 2 runs, enclosure with 1.6mm Galvanised iron with powder coated RAL 7032, outdoor IP66 with canopy, temperature: ambient 40 °C + rise 55 deg C for 130A/Sqcm, halogen Free, complete as per IS specifications.

Supply and Installation of 1600A Flange End with external aluminium earthing of 50x6mm 2 runs with necessary accessories complete.

Supply and Fixing of copper flexibles for 4W 1600A with external aluminium earthing of 50x6mm 2 runs with necessary accessories complete.

Supply and Laying of 25x6mm Aluminimum Earth Flat with necessary clamps/supports for earth connection.

Supply and Fixing of MS Supports for with necessary accessories for fixing Rising Main.

Earthing as per the ISI specification with an earth electrode of 2.10 metre Class 'B' GI pipe of dia not less than 40mm with copper earth plate of size 125mm x 50mm x 6mm with necessary funneling arrangements with necessary masonry work and with 38mm RCC cover slab for the brick masonry

Supply and run of 25mm x 6mm tinned copper flat with necessary clamps / supports on wall / floor / ground for earth connection.

Wiring with 2 x1.5 sq.mm. PVC insulated single core unsheathed FRLS copper conductor of 1100 V grade in suitable PVC rigid pipe Concealed in wall and ceiling with PVC accessories with Module GI switch box in flush with wall with 6A one way module switch with module front plate and making good of the concealed portion with suitable colour for Concealed PVC Light point / fan point (for electronic regulator) (5 points / Coil) (Higher End )

Supply and fixing of single box type 4' 20W LED fitting with CRCA body complete with TW round blocks on wall or ceiling with 20W LED tube with PVC unsheathed FRLS Copper leads from terminals to the fitting. (Higher End)

supply and fixing of 1200mm (48") sweep AC ceiling fan complete ( Higher end) with 2 module 100W fan step regulator (Higher end) with 300mm down rod with fan clamp with side plates and cross arm of size 450mm (18")

Supply and fixing of 300mm (12") sweep (light duty) AC exhaust fan complete without provision of hole in the wall.

Supply and fixing of louvers shutters arrangements for 300mm (12") sweep (light duty) AC exhaust fan.

Supply and fixing of 12 way single pole and neutral MCB sheet steel enclosure distribution board with double door (metal) with 1 no. 20A DP MCB switch as incoming and 10 nos. 6A to 32A SP MCB as outgoing in flush with wall with earth connection only. Higher End

supply and fixing of 48W LED street light fitting with LED (Higher end) with 32mm dia. GI pipe (class B) with 1 no.32 mm GI bend complete on the existing post/ on wall with PVC unsheathed copper leads with MS clamps and with painting .

Supply and fixing of 3nos.6A two module socket, 1no. 6/16A two module socket, 3nos. 6A one module switch, 1no. 16A one module switch with module cover plate (plastic) on suitable module concealed Box (GI) in flush with wall with connections. Higher End

Supply and fixing of 7 segment 4 way triple pole neutral MCB distribution board in sheet steel enclosure double door type with metal door with IP 42 protection with 40A 4 pole MCB as incoming and 3Nos 40A DP RCCB as sub incomer and 12 Nos. 6 A to 32 A SP MCB as outgoing in flush with wall and making good of the concealed portion with earth connection.

Supply and installation of air termination rod of 2mtr length of material AlMgSi of diametre ø 16/10 mm crimped on both the ends (Tappered Type). The rod shall be mounted with stainless steel clamp and fixing accessories. It should satiesfies IEC 62561-1 & 2 and it should Withstand Minimum wind velocity of 150m/s.

Supply and clamping of 8mm dia Aluminium alloy Solid Round Conductor of material AlMgSi used as down conductor system with necessary Conductor Holder,glue, connectors, joints and expansion piece etc as per IEC 62561-2 recommendation and site condition

Supply and run of Rust resistant non corossive 10 mm dia Copper Bonded Steel round conductor used for Earth termination inside the concrete and soil with necessary masonary and excavation work .

Supply of Maintenance Free Copper bonded Earth rod of 3000mm length having the dia of 17.2 mm with copper coating thickness of 254 microns. The rod has been tested for Dimension, Marking, Tensile Strength, Salt mist, coating thickness, Electrical resistivity test before and after corrosion test as per IEC 62561-2.

Supply and Installation of Battery operated LCD type Lightning counter - LCD screen shows the number of lightning strikes, hour and date of lightning events Buttons enable TIME/DATE setting and log viewing. Replaceable battery, working life minimum five years, Complies with IEC/EN 62561-6.

Supply and insallation Cabinet Type Class 1 and 2 Combined Model SPD in 4P enclosure box to arrest surges and overvoltages in the power linedue to lighning switching action etc. they must be installed in the incoming MCC panel / DB of the respective buling in parallel to the power circuit by using 4 of 6 Sqmm Cu(84 / 0.3) .Model: PSV4-12.5/400TT (3 phase power network)

Ravi Electricals (BID ID -1161273)

ANNAI ELECTRICALS (BID ID -1163561)