CA NO. CWE/CHM(U)-108/2023-24 REPAIR/ MAINTENANCE OF ACB, VCB, TRANSFORMER, LT PANEL AND UNDERGROUND CABLE AT COMMAND HOSPITAL (WC) CHANDIMANDIR

Amount

Supply and fixing of Power Cables, Aluminium Stranded Conductor 400 sqmm, 3.5 core, LT, XLPE Insulated, Cores laid up, PVC Inner sheathed, Armoured with galvanized wire or galvanized steel strip, overall PVC Sheathed, 1100 V Grade as per IS 7098 (Part 1) 1988 complete laid in trenches/ floors/ ducts/ fixed to poles/ walls/ drawn through pipes etc including provn of lugs, glands, nuts, bolts & washers etc for connecting in LT feeder pillar box/ transformer bushings/ LT OH Line and testing on completion including taking down old unserviceable cable complete all as specified and directed by Engineer-in-Charge. Note: 1. Excavation, earth work, cable covers/ protection pipe etc shall be measured and paid separately under relevant items of BOQ. 2. Laying of LT UG Cable includes excavation and laying at certain places in hard standing by removing cross linked tiles, and laying cables, reflling and fixing the tiles to original shape etc., The rates quoted are deemed to be inclusive of necessary civil works to bring the area to original finish and no extra payment will be done on this account.

All as per item No. 1.00 here-in-before but of size 185 sqmm, 3.5 core.

All as per item No. 1.00 here-in-before but of size 95 sqmm, 3.5 core.

All as per item No. 1.00 here-in-before but of size 70 sqmm, 3.5 core.

All as per item No. 1.00 here-in-before but of size 50 sqmm, 3.5 core.

All as per item No. 1.00 here-in-before but of size 35 sqmm, 3.5 core.

All as per item No. 1.00 here-in-before but of size 16 sqmm, 4 core.

Supply and laying, jointing in replacement of Power Cables, Aluminium Stranded Conductor 120 sqmm, 3 core, HT, XLPE Insulated, Cores laid up, PVC Inner sheathed, Armoured with galvanized wire or galvanized steel strip, overall PVC Sheathed, 11000 V Grade as per IS 7098(Part 1) 1988 complete laid in trenches/ floors/ ducts/ fixed to poles/ walls/ drawn through pipes etc including provn of lugs, glands, nuts, bolts & washers etc and testing on completion including taking down old unserviceable cable complete all as specified and directed by Engineer-in-Charge. Note: 1. Excavation, earth work and cable covers / protection pipe etc shall be measured and paid separately under relevant items of BOQ.

Excavation in trenches for foundations, laying / taking out of cables, erecting of poles etc, in any type of soil, not exceeding 1.5 mtr in depth and not exceeding 1.5 mtr in width and getting out, complete all as specified and as directed. Note :- Nothing extra will be paid to the contractor in this account if hard or rocky soil is encoutered during the execution.

Returning, filling in trenches including spreading, leveling, watering and well ramming in layers not exceeding 25cm complete all as specified and directed by Engineer-in-Charge.

Removing surplus excavated material to a distance not exc 50m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed by Engineer-in-Charge.

Material & Labour for cutting of existing hard standing/ road up to 15 cm depth for laying of pipe lines and making good the disturbed surfaces by providing PCC 1:2:4 type B-1 (using 20mm graded aggregate) after laying of pipes lines and returning filling of soil, complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of 150 mm dia bore tubes, 'light grade' galvanized, with all fitting and fixed complete to walls/ poles or laid in trenches/ floors for cable protection complete all as specified and directed by Engineer-in-Charge.

All as per item No. 13 here-in-before but of size 100 mm dia bore.

All as per item No. 13 here-in-before but of size 80 mm dia bore.

All as per item No. 13 here-in-before but of size 50 mm dia bore.

M&L for sand cushioning for underground cable 8 cm below and 15 cm above the cable with clean dry river sand in trenches including spreading, levelling etc. complete all as specified and directed Note: Punned thickness only will be measured for the purpose of payment.

Supply and laying Precast concrete cable cover, class LV, type-1, flat, of size 250mm x 150mm x 40mm as protection to LT cable complete all as specified and directed by Engineer-in-Charge.

M&L in replacement for earthing complete with galvanized iron earth plate electrode 600mm x 600mm x 6 mm thick buried directly in ground (earth pit not less than 2.25 meters deep below ground level) with top edge of the plate not less than 1.5 meters below normal ground level connecting to GI strip 32x6 mm as earthing lead by means of bolts, nuts, check nuts and washers of galvanized iron or steel and earth wire protected by 50mm dia GI pipe medium grade earth plate surrounded by alternate layer of coal dust and common solt 15 cm thik each layer all as per electrical plate and connected to pole structure/ panel board/ earthing test point all as shown in electrical plate No. 3 of SSR Part-I (2009) and testing on completion complete all as specified and directed by Engineer-in-Charge.

Note :- 1. The unit rate quoted shall also include for excavation, earth work in any type of soil, plain cement concrete 1:3:6 mix, Type C1 pit, 40mm thick RCC 1:2:4 mix type B1 cover reinforced with 8mm dia TMT bras @ 150mm C/C both ways, GI funnel with watering pipe, wire mesh, protection pipe, earth strip up to 7.50m long. 2. Earth lead strip 32 x 6 mm and GI 40 mm dia protecion pipe upto 7.5 mtr length will be deemed to include in the unit rate quoted.

Taking out complete existing deteriorated lightening protection fixed on roof (Horizontally), fixed on wall (from fifth floor to earth pit) of CH (WC) Chandimandir, including GI / Aluminium strip, aluminium air terminal points, test point terminal box, insulator and re-fixing in same position after removing deteriorated strip/ points and replacing with new GI/ aluminium strip and points including insulators, making the holes in GI/ Al strip, bending etc and testing complete all as specified and directed by Engineer-in-Charge.

Note: (i): The cost of the insulator and earth work for GI strip to pits shall be deemed to be included in the quoted rate. (ii) The distance between insulators shall be 75 cm. (iii) GI/ aluminium strip will be measured and paid separately. (iv) Two nuts & bolt shall be provided on each joint. (v) Welding work will not be permitted anywhere in GI/Al strip.

Supply and fixing of GI strip 32 x 6 mm for earthing complete all as specified and directed by Engr-in-Charge.

Supply and fixing of aluminium strip of size 25 x 3.15mm for earthing complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of Test point terminal block made of gun metal or Phosphorous bronze 75 x 75 x 25mm drilled including screwed 04 Nos 8mm dia 25mm long hexagonal head brass screws including box of size 90 x 90 x 90mm made of 1.6 mm CRCA sheet painted with two coats of synthetic enamel paint over a coat of red oxide primer and screwed to wall for protection of test point complete incl covered with 3mm thick laminated sheet complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of Air termination, single pointed aluminium rod 12mm dia and 300mm long Including PCC as in coping, if required complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of MCCB, 400 Amp, 4 pole, 36 KA (Ics =100% Icu) with adjustable thermal & fixed magnetic setting with bus bar spreader links for connecting both incoming and outgoing cables with suitable connections with suitable size of glands etc complete including testing & commissioning all as specified and as directed by the Engineer-in-Charge. Note: Any modifications needed for fixing the MCCB in the panel is deemed to be included in the rates quoted and no extra payment will be done on this account.

Supply and fix in replacement of MCCB 250 Amp, 4 pole, 36 KA (Ics =100% Icu) with adjustable thermal & fixed magnetic setting with bus bar spreader links for connecting both incoming and outgoing cables with suitable connections with suitable size of glands etc complete including testing & commissioning all as specified and as directed by the Engineer-in-Charge.Note: Any modifications needed for fixing the MCCB in the panel is deemed to be included in the rates quoted and no extra payment will be done on this account

Supply and fix in replacement of MCCB 200 A, 4 pole, 36 KA (Ics =100% Icu) with adjustable thermal & fixed magnetic setting with bus bar spreader links for connecting both incoming and outgoing cables with suitable connections with suitable size of glands etc complete including testing & commissioning all as specified and as directed by the Engineer-in-Charge. Note: Any modifications needed for fixing the MCCB in the panel is deemed to be included in the rates quoted and no extra payment will be done on this account

Supply and fix in replacement of MCCB 160 Amp, 4 pole, 36 KA (Ics =100% Icu) with adjustable thermal & fixed magnetic setting with bus bar spreader links for connecting both incoming and outgoing cables with suitable connections with suitable size of glands etc complete including testing & commissioning complete all as specified and as directed by the Engineer-in-Charge. Note: Any modifications needed for fixing the MCCB in the panel is deemed to be included in the rates quoted and no extra payment will be done on this account

Supply and fix in replacement of MCCB 125 A, 3 pole, 16 KA (Ics =100% Icu) with adjustable thermal & fixed magnetic setting with bus bar spreader links for connecting both incoming and outgoing cables with suitable connections with suitable size of glands etc complete including testing & commissioning complete all as specified and as directed by the Engineer-in-Charge. Note: Any modifications needed for fixing the MCCB in the panel is deemed to be included in the rates quoted and no extra payment will be done on this account

Supply and fix in replacement of MCCB 63 Amp, 3 pole, 16 KA (Ics =100% Icu) with adjustable thermal & fixed magnetic setting with bus bar spreader links for connecting both incoming and outgoing cables with suitable connections with suitable size of glands etc complete including testing & commissioning complete all as specified and as directed by the Engineer-in-Charge. Note: Any modifications needed for fixing the MCCB in the panel is deemed to be included in the rates quoted and no extra payment will be done on this account

Supply and fix in replacement of MCB, SPN, 40 Amp, 240 Volts complete all as specified and as directed by the Engineer-in-Charge.

Material and Labour for repair of existing deteriorated earth pit and re-construct new earth pit of size 450mm x 450mm inside dimension and 300mm deep with bricks masonry of 1:4 cement mortar and provide inside and outside cement plaster 10 mm thick (1:4 Cement mortar) with iron top cover including open handle as per earth pit and provide GI funnel for watering complete all as specified and directed by Engineer-in-Charge.

Shutdown the power supply, disconnecting all incoming & outgoing cables carefully from switch room indoor type, LT panel board and removing the burnt wiring, cleaning the bus bars, insulators and MCCBs with CTC, meggering the insulation value, balancing the load, Check all conection of ammeter, voltmeter and LED indicator lamp wherever required, tightening all fasteners, panel lock (renew if required), reconnecting back the incoming and outgoing cables with suitable cable Lugs, glands and wrapping the insulation tape on all bare conductors, and testing on completion for proper functioning, cleaning switch rooms and arrange danger plate and locking arrangement of switch rooms including pad lock as per existing complete all as specified and directed by Engineer-in-Charge.

Note: (i) Replacement of unserviceable MCCBs, cables shall be measured and paid separately. (ii) Minor Items such as suitable cable lugs, insulation tape, Indicator lamp, locking arrangement, Pad lock, danger plate deemed to include in quoted rates.

M & L for Preparation of old steel surfaces of outdoor/ indoor type LT panel boards of any size and painting with synthetic enamel paint of approved colour over a coat of red oxide primer (both internally & externally) and fixing 01 Nos steel danger plates on panel board complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing of Heat Shrinkable Cable jointing kit for 1100 volts grade XLPE cable, straight through joint complete with jointing material and accessories suitable for 3.5 core XLPE cable of size 35 to 70 Sqmm complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing of Heat Shrinkable Cable jointing kit for 1100 volts grade XLPE cable, straight through joint complete with jointing material and accessories suitable for 3.5 core XLPE cable of size 95 to 120 Sqmm complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing of Heat Shrinkable Cable jointing kit for 1100 volts grade XLPE cable, straight through joint complete with jointing material and accessories suitable for 3.5 core XLPE cable of size 150 to 185 Sqmm complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing of Heat Shrinkable Cable jointing kit for 1100 volts grade XLPE cable, straight through joint complete with jointing material and accessories suitable for 3.5 core XLPE cable of size 400 Sqmm complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing of Heat Shrinkable Cable jointing kit for 11 KV HT (earthed) grade XLPE cable for indoor end termination joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120-185 Sqmm complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing of Heat Shrinkable Cable jointing kit for 11 KV HT (earthed) grade XLPE cable for Outdor end termination joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120-185 Sqmm complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing of Heat Shrinkable Cable jointing kit for 11 KV HT (earthed) grade XLPE cable for straight through joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 240-400 Sqmm complete all as specified and as directed by Engineer-in-Charge.

Supply & Fixing in replacement of HT 11 KV, outdoor type gang operated air-break switch, Triple pole, mechanically operated, mounted on insulator and steel frame, with operating mechanism worked from ground level, with 9 insulator for current rating upto 400 amps, suitable for horizontal/ vertical mounting fixed type complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing in replacement of Lightening arresters, expulsion type, complete with all fittings, transmission class, discharge capacity 65 KA on 11000 volts, complete inclusive of all necessary fixing arrangements complete all as specified and as directed by Engineer-in-Charge.

Supply & Fixing in replacement of Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of paint complete all as specified and as directed by Engineer-in-Charge.

Comprehensive maintenance of all ACBs of any make, 800-3200 Amps at MES power houses which comprises of :- (i) Cleaning and assembling of front cover, push button, locking latches. (ii) Cleaning of arc chute and terminal shield. (iii) Cleaning and assembling of chassis. (iv) Cleaning and tightening of every point of auxiliary and control unit connector block. (v) Cleaning, greasing and assembling of hand pull-out system, racking mechanism of chassis and function position indicators. (vi) Cleaning, checking and assembling of arc chute.

(vii) Physical inspection of main contact. (viii) Cleaning, checking/ testing and assembling of tapping coil/ closing coil. (ix) Cleaning and greasing of mechanical charging system. (x) Cleaning, greasing and installation of jaw contacts. (xi) Repair or replacement of lower mechanism, if faulty. (xii) Final testing manually of the Air circuit breaker (xiii) The scope of servicing is restricted to ACB only.

NOTE: (i) ACB spares shall be measured and paid separately (ii) The test report shall be submitted by the contractor after visit (iii) The visit will be done after every 2 months unless otherwise specified. (iv) Cost of additional hardware like, bolts, nuts, washers, panel door lock and lamp indicator LED type, MCB TP, 06-32 Amp, 10KA 450 Volt, control wiring, ON/ OFF button to put the breaker in serviceable condition is deemed to be included in the rates quoted. (v) Servicing/ maintenance of ACBs shall be carried out by auhtorised service centre/ agency/ rep of any OEM as approved by GE.

supply and fixing in replacement of main isolating contacts both male & Female (jaw contacts) all as per existing complete all as specified and as directed by Engineer-in-Charge.

supply and fixing in replacement of shunt trip and closing coil of existing make complete all as specified and as directed by Engineer-in-Charge.

supply and fixing in replacement of pad lock button of existing make complete all as specified and as directed by Engineer-in-Charge.

Repair, Servicing and maintenance of HT Vaccum Circuit Breaker (VCB) of any capacity 11 KV, any make and re-assembling complete comprising of the following including testing and commissioning to the entire satisfaction of Engineer-in-Charge. The work comprises of the following:- (i) Decarbonsing/ cleaning complete HT VCB, 11 KV consists of bus bar chamber, circuit chamber and metering chambers by opening the spout/ bus covers inspecting the bus bar joints, cleaning of bus bars, checking the bus bar spouts and circuit spouts and tightening of joints, cleaning of bus bar insulators and bus bars with CTC. (ii) Calibration, testing of all relays by secondary and primary injection set which includes relay setting, Testing/ Checking of CT's to find out their actual ratio and AC/ DC power supply circuits for proper functioning. (iii) Testing/ Checking and tightening the loose parts, greasing and adjusting if required and also testing of current circuit, control circuit.

(iv) Checking of operating voltage at mechanism terminals and tripping arrangement for positive tripping. Contacts to be examined for their condition and operation and replace if necessary. (vi) Review the adjustment of all pressure switches and lockout devices. (vii) Inspecting all bolts, nuts, pins,coller pins, panel door lock are in place and they are tight and opened properly. (viii) Testing of IR value with the help of megger, Check the auxillary switch, shunt trip assembly, closing/ trip selenoid, limit switch and complete control wiring of the breaker. (ix) Checking/ testing and power packs and heating system complete with all connections including replacement of defective power pack etc. (x) Checking of all end terminals, tightening of all earth connections, tightening all hardware, rack-in the breaker, put in position, engage the VCB with the supply system and testing for smooth functioning

NOTE: (i) VCB spares shall be measured and paid separately (ii) The testing instrument whatever required to test the relays will be arranged by the contractor at his own cost. (iii) Cost of additional hardware like, bolts, nuts, washers, panel door lock and spring washers, petrolium jelly, control wiring to put the breaker in serviceable condition is deemed to be included in the rates quoted. (iv) The test report shall be submitted by the contractor. (v)Servicing/ maintenance of VCBs shall be carried out by auhtorised service centre/ agency/ rep of any OEM as approved by GE.

Supply & Fixing in repairs of DC power pack with 10 minutes battery back up, input 230 volts AC and output 24 volt DC, capacity 100 watt 4 amps complete with operation indicators, terminal block, safety fuse etc and making connections with the existing circuits in HT VCB panels complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in repairs of space heater 240 volts, single phase as per existing size/ type and suitable for 11 KV VCB of any make complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in repairs of thermostat for space heater, single phase range 0 to 90 degree celcius all as per existing size/ type and suitable for 11 KV VCB of any make complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in repair of Jaw contact Male & Female all as per existing size/ type and suitable for 11 KV VCB of any make complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in repair of Shutter for racking Shaft with all accessories all as per existing size/ type and suitable for 11 KV VCB of any make complete all as specified and as directed by Engineer-in-charge.

supply and fixing Closing Coil and shunt trip all as per existing size/ type and suitable for 11 KV VCB of any make complete all as specified and as directed by Engineer-in-charge.

Supply & Fixing in repairs of LED indicators on the existing HT 11 KV panel boards all as per existing size/ colour complete all as specified and as directed by Engineer-in-charge.

Supply & Fixing in replacement of three way control switch for ON/ OFF opeartion of 11 KV HT VCB all as per existing complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in repairs of door handle kit suitable for HT VCB 11 KV 630/ 800/ 1250 amps capacity of any make, for proper locking of the main door complete all as specified and as directed by Engineer-in-charge.

S & F in replacement three phase digital type voltmeter with input 0-110 VAC and range 0-11 KV AC, accuracy ± 1.0%, PTR 11 KV/ V3/ 110V/ V3, square shape size 96 mm x 96 mm, flush mounting type, on the HT 11 KV panel boarrds at various locations all as per existing incl making all connections with control wiring and testing for proper working complete all as specified and as directed by Engineer-in-charge.

S & F in replacement three phase digital type ammeter with input 0-5 AAC and range 0-200 AAC, accuracy ± 1.0%, square shape size 96x96 mm, flush mounting type, on the HT 11 KV panel boards at various locations all as per existing incl making all connections with control wiring and testing for proper working complete all as specified and as directed by Engineer-in-charge.

Taking out the existing broken schematic diagram board and supply and install new schematic diagram board for electric installation of size and marking by different colour as per colour code (diagram area) complete all as specified and as directed by Engineer-in-charge.

Repair, Servicing and maintenance of 75 KVA Voltage stabilizer at MES pump house & X-ray department, Disconnect all incoming and outgoing burnt out cables and refix by replacing the same with new cables complete all as specified and as directed by Engineer-in-charge. Note: (i) New cables shall be measured and paid separately under respective Item.

Supply & Fixing in replacement of galvanized iron ladder type cable tray at power house and including removing detoriated, bend cable tray and laying all existing cablescomplete all as specified and as directed by Engineer-in-charge. Note : (i) Iron angles, nuts & bolts shall be provided each joints. (ii) All laying arrangement for tray provied by the contractor.

Taking out the existing sign board if any size / type and supply and install Retro Reflective Sign Boards for electrical installation of size 4 feet x 5 feet (print area) as per the following specifications:- (a) Post (pillar type) 55 mm dia 2 mm thickness SS 304 grade 9.5 feet long - 02 Nos fittted with MS base plate 150 mm x 150 mm x 5 mm thickness at the bottom and 50 mm dia SS half balls on the top (b) Pipe for print area frame using 32 mm dia 1.2 mm thickness SS 304 Grade pipe and 06 Nos connecting pipes of 50 mm length.

(c) SS rivetted strip 2 mm thickness and size 30 mm length & 25 mm width- 16 Nos. (d) 3 mm thick ACP sheet (aluminium composite sheet) of size 4 feet x 5 feet along with 1 mm thickness retro reflective material for approved colour and writing work in capital letters and numbers on both sides of ACP sheet all as specified and directed. (e) PCC 1:2:4 type B-1 block of size 300 mm x 300 mm x 450 mm- 02 Nos for grouting of sign board incl earth work complete all as specified and as directed by Engineer-in-charge.

supply, installation, testing in replacement of Automatic Transfer Switch (ATS) of capacity 160 Amps, 4 Pole, 415 Volt, 50 HZ, Closing Current 3.0A/ 230V AC, Tripping Current 0.5A/ 230V AC from the Panel Board complete inclusive all incoming and outgoing cables inclding necessary fixing in existing panel etc, complete all as specified and as directed by Engineer-in-Charge. Note: (i) Any modifications needed for fixing the ATS in the panel is deemed to be included in the rates quoted and no extra payment will be done on this account.

Supply & Fixing in replacement of HT danger notice plate of size 250mm x 200 mm duly pasted on 11 KV HT VCB panels complete all as specified and as directed by Engineer-in-charge.

Supply & Fixing in repair of Ball bearing for rolling shutters complete all as specified and as directed by Engineer-in-charge.

Supply and Laying of double wall corrugated HDPE pipe, 50 mm outer dia, confirming to IS-14930 Part-II with antirodent and non flame propogating properties of approved colour laid in trenches/ floors/ duct or fixed on wall/ pole including all fittings as reqired, like socket, couplers, bends etc for protection of LT XLPE Cable grade 1100 volts complete all as specified and as directed by Engineer-in-Charge.

All as per item No. 68 here-in-before but of size 100 mm outer dia

R D Bansal

Alpha Engineers and Builders

Bharat Enterprises

NARINDER KUMAR SONS

Raman Electric Trading Co