Repair Maintenance of HT Distribution system and Transformer and VCB RMU, Relays and other connected works at NSB, NP, AP, NCS, Key Personnel Colony and other allied areas under AGE E M I of GE U I Visakhapatnam

Amount

Excavation in trenches, not exc 1.5 m wide and not exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, laying cables etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out all excavated material in soft / loose soil complete all as specified and directed.

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

Removing of excavated surplus soil to a distance n. exc 50 m and depositing where directed at a level n. exc. 1.5 m above the starting point complete all as specified and directed.

M&L sand cushioning with clean and dry sand in trenches for protection of UG cable and including punning down complete all as specified and directed. Note:- Punned thickness shall only be measured and paid.

Supplying and laying un-reinforced precast concrete cable cover, class HV, Type 1, flat, of size 300mmx 180mm x 40mm, laid along alignment of cable as protection to cable in trenches complete all as specified and directed.

Material and labour for cutting road surface suitable for inserting pipe n exc 100mm bore at a depth 0.75 m to 1.0 m from road surface for passing UG cable, getting out including returning and refilling with soil including provision of 200mm thick PCC (1:3:6) type C2 (40mm graded stone aggregate) at top portion of the trench to match with exisiting road surface and including disposal of surplus soil to a distance not exceeding 50 m complete all as specified and as directed. Note:- GI Pipe shall be measured and paid separately.

S&F 100 mm bore galvanised steel tubing, medium grade with necessary fittings, laid under road crossing, for cable protection including taking down complete all as specified and directed. Make - Tata / Jindal Steel / Surya Roshni Ltd. / Bhushan Power & Steel Ltd. / M/s APL Apollo Tubes Ltd

Supply & laying XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts, Earthed, grade cross sectional area 240 Sqmm, 3 core, laid in trenches / duct / on pole including taking down existing cable complete all as specified and directed. Make :- Havells / KEI / Polycab / Gloster / Finolex

All as per Sl. Item No. 8.00 above but for cable of size 185 sqmm x 3 Core

All as per Sl. Item No. 8.00 above but for cable of size 120 sqmm x 3 Core

Supplying and laying synthetic rubber insulated mats of size 2mx1mx3m for voltage upto 33 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m including taking down complete all as specified and directed.

S&F danger notice plate of size 25 x 20 cm & 1.6mm thick mild steel sheet, vitreous enameled white, with letters, figures and conventional skull and bones in signal red colour and fixed with M.S. clamps, bolts and nuts of approved size for HT including dismantling compete all as specified and as directed.

M&L cable jointing kit for 11 KV (Earthed) grade 3 core XLPE armoured aluminium conductor cable of size 120 to 185 sqmm for outdoor termination, heat shrink type joint complete with jointing material and accessories including taking down complete all as specified and directed. Note:- (i) The cost of Disconnecting and reconnecting the cable with HT network is deemed to be included in the unit rate quoted against this item. (ii) The cost of re-arranging the cable if needed is deemed to be included in the unit rate quoted against this item. Make:- 3M / Denson / Raychem

All as per Sl Item No. 13.00 but suitable for cable of size of 240 to 400 Sqmm

M&L cable jointing kit for 11 KV (Earthed) grade 3 core XLPE armoured aluminium conductor cable of size 120 to 185 sqmm for indoor termination, heat shrink type joint complete with jointing material and accessories including taking down complete all as specified and directed. Note:- (i) The cost of Disconnecting and reconnecting the cable with HT network is deemed to be included in the unit rate quoted against this item. (ii) The cost of re-arranging the cable if needed is deemed to be included in the unit rate quoted against this item. Make:- 3M / Denson / Raychem

All as per Sl Item No. 15.00 but suitable for cable of size of 240 to 300 Sqmm

M&L cable jointing kit for 11 KV (Earthed) grade 3 core XLPE armoured aluminium conductor cable of size 240 sqmm to 400 sqmm for straight through, heat shrink type joint with jointing material and accessories including taking down complete all as specified and directed. Note:- (i) The cost of excavation is deemed to be included in the unit rate quoted against this item. Make:- 3M / Denson / Raychem

All as per Sl Item No. 17.00 but suitable for cable of size of 120 to 185 Sqmm

S&F in repair busbar/CT supporting insulator of rating 400 to 1250A, 25KA, suitable for 11kV VCB panel complete all as specified and as directed. Make:- ABB / Schneider / Siemens / Areva

S& F in repair service / test position limit switch 1NO+1NC, suitable for 400A to 1250A 11 KV VCB complete all as specified and directed. Make:- ABB / Schneider / Siemens / Areva

S&F in repair rectifier unit (Monoblock) 16A for spring charging motor of rating 400 to 1250A suitable for 11kV VCB complete all as specified and as directed. Make:- ABB / Schneider / Siemens / Areva

S&F in repair spring charging universal motor with gear box 220V AC/DC of rating 400 to 1250A suitable for 11kV VCB complete all as specified and as directed. Make:- ABB / Schneider / Siemens / Areva

S&F 3 ph multifunction meter, digital type (displaying A, V, PF, Hz, KVA, KW, KVAR, KWh, Karsh etc.) Class 1/0.5 with RS485 port for communication in Modbus protocol, accuracy class-1, e- navigator, including taking down old one complete all as specified and as directed. Make:- L&T / Schneider / HPL / AE

S&F in repair LED indication lamps, 110 V of various colours complete all as specified and directed.

S&F in repair programmable numerical inverse time over current / earth fault relay having IDMT / NI / VI / DT curves with minimum time delay zero with respect to I>>, I>>>, Ie>>, Ie>>> settings, suitable for VCB of capacity 11/12 KV with all original / Retrofitting arrangements complete all as specified and directed. Make:- ABB / Schneider (Micom P127) / Siemens

All as per Sl Item No. 32.00 above but suitable for RMU of capacity 11/12 KV

S&F in repair epoxy resin body of rating 400 to 1250 A, suitable for 11KV VCB & of make as per OEM complete all as specified and as directed.

S & F in repair Insulating cover for R/Y/B phase, 400-1250 Amps, suitable for 11KV VCB & of make as per OEM complete all as specified and directed.

S & F in repair brass nut / Racking Nut suitable for 400-1250 Amps rating, 11KV VCB & of make as per OEM complete all as specified and directed.

S & F in repair Epoxy Resin Spout bushings for busbar single pole R/B phase, 400-1250 Amps, suitable for 11KV VCB panel & of make as per OEM complete all as specified and directed.

All as per Sl Item No. 30.00 above but Y phase

S & F in repair Epoxy Resin Spout bushings for CT/PT/Circuit spout single pole R/Y/B phase, 400-1250 Amps, suitable for 11KV VCB panel & of make as per OEM complete all as specified and directed.

S & F in repair Isolating contact any type of single pole Incoming / Outgoing , 400-1250 Amps, suitable for 11KV VCB & of make as per OEM complete all as specified and directed.

S & F in repair flexible connection, 400-1250 Amps, suitable for 11KV VCB & of make as per OEM complete all as specified and directed.

S & F in repair dashpot assembly up to 25 KA, 400-1250 Amps, suitable for 11KV VCB & of make as per OEM complete all as specified and directed.

S & F in repair Nylon Breaker wheel , 400-1250 Amps, suitable for 11KV VCB & of make as per OEM complete all as specified and directed.

S & F in repair Top guide roller, 400-1250 Amps, suitable for 11KV VCB & of make as per OEM complete all as specified and directed.

S & F in repair Top guide bush, 400-1250 Amps, suitable for 11KV VCB & of make as per OEM complete all as specified and directed.

S & F in repair drive insulator with M10 Nyloc Nut suitable for 630 Amps rating, 11KV VCB & of make as per OEM complete all as specified and directed.

S & F in repair drive beam (Pair) suitable for 400-800 Amps rating, 11KV VCB & of make as per OEM complete all as specified and directed.

S&F in repair closing coil assembly, 110V DC suitable for 11KV VCB & of make as per OEM complete all as specified and directed. .

S&Fin repair tripping coil 110V DC suitable for 11KV VCB & of make as per OEM complete all as specified and directed.

S&F in repair T‐N‐C Switch (Breaker Control Switch) for control switches & control wiring, suitable for 11KV VCB Panel & make as per OEM complete all as specified and as directed.

S&F in repair vacuum interrupter of rating 400 A / 630 A / 800 A suitable for 11KV VCB & make as per OEM complete all as specified and as directed.

S&F in repairs bakelite HRC fuse base with carrier 32A, 415 V with HRC fuse 5 amps of make as per OEM complete all as specified and directed.

S&F in repairs buffer for closing spring suitable for 11KV VCB & make as per OEM complete all as specified and as directed.

S&F in repairs buffer for opening spring suitable for 11KV VCB & make as per OEM complete all as specified and as directed.

S&F in repairs Ratchet wheel suitable for 11KV VCB & make as per OEM complete all as specified and as directed.

S&F in repairs Trip Roller suitable for 11KV VCB & make as per OEM complete all as specified and as directed.

S&F in repairs Motor cut off switch Micro switch assembly suitable for 11KV VCB & make as per OEM complete all as specified and as directed.

S&F in repairs 12 way auxiliary switch (6 NO + 6 NC) suitable for 11KV VCB & make as per OEM complete all as specified and as directed.

S&F in repair push button actuator 1 No element, 22.5 mm dia assembly complete all as specified and directed.

Labour only for identifying, diagnosing, tracing, checking & rectifying High Tension (11KV) faults, tracing location by meggering the lines, faults in panels, VCB`s, Transformers and other switchgears at any location, any time round the clock and rectifying it to restore the supply within time limit at various locations using appropriate fault locator, cable route locator etc complete all as specified and directed. Note:- 1. All the activities to trace the fault, rectifying & restoring the supply shall be carried out within specific reasonable time as directed by the Engineer-in-charge. 2. The cost of required tools (T& P), minor items such as lugs, nuts, bolts, HT insulation tape and safety equipments required for the job shall deemed to be included in the unit rate quoted against this item & nothing extra shall be paid to contractor by the department on these ground. 3. Safety of manpower deployed for the job is contractor’s responsibility. In case of any accident / Fatal injury, contractor shall be held responsible to settle all claims and nothing extra shall be paid to the contractor on this account. 4. The cost of all manpower (any number) for the job is deemed to be included in the quoted unit rate. 5. The cost of Fault identification by use of fault locator (if needed) is catered in separate Items. 6. Minimum one VCB / RMU technician, one Transformer Technician & one cable Jointer must be available round the clock during rectification process of fault if respective fault occurs.

M&L for detecting HT / LT UG cable faults located in any stretch / depth with sophisticated cable fault locator consisting of microprocessor based pre-locator system, HV surge generator, fault pin point surge wave receiver, cable identification instrument , cable tracer for exact location of under ground cable routes complete all as directed. Note:- The rate quoted deemed to be inclusive of arrangement of necessary fault locator equipment, transportation of equipment & charges for service engineer.

S&F in repair 11 KV CT, epoxy resin cast, dry type, indoor, 200/100 (primary) -5 + 5 A (Secondary) , with core 1, class 0.5, core 2 class 5P10 for fixing with spout bushing complete all as specified and directed.

S&F in repair 11 KV CT, epoxy resin cast, dry type, indoor, 100/50 (primary) -1 + 1 A (Secondary), with core 1, class 0.5, core 2 class 5P10 for fixing with spout bushing complete all as specified and directed.

S&F resin Cast 11kV /√3 / 110v/√3 potential transformers, make as per OEM suitable for 11kV VCB panel including taking down old one complete all as specified and as directed.

S & F in repair under voltage coil kit 24 Vcc/Vdc suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM complete all as specified and directed.

S & F in repair circuit-breaker trip coil kit 24 Vcc/Vdc suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM complete all as specified and directed.

S & F in repair circuit-breaker closing coil kit 24 Vcc/Vdc suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM complete all as specified and directed.

S & F in repair 1/2 AA lithium battery, 3.6V DC, suitable for 11KV, 400 to 800 Amp RMU relay & of make as per OEM complete all as specified and directed.

S & F in repair AA/AAA lithium battery, 1.5V DC, suitable for 11KV, 400 to 800 Amp RMU relay & of make as per OEM complete all as specified and directed.

S&F in repair motor for motorized mechanism 24 Vcc/Vdc suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM complete all as specified and directed.

S & F in repair isolator switch position indication suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM complete all as specified and directed.

S & F in repair circuit breaker position indication suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM complete all as specified and directed.

S & F in repair CB Fault Tripping Indication suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM complete all as specified and directed.

S & F in repair flair 22D lithium dua Fault Passage Indicator (FPI) suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM complete all as specified and directed.

S & F in repair VPIS Standard, 3.3 to 7.7 KV suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM complete all as specified and directed.

S & F in repair heat resistor for I switch operating mechanism suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM complete all as specified and directed.

S & F in repair heat resistor for D/B circuit breaker operating mechanism suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM complete all as specified and directed.

S & F in repair cable cover boots for RMU of suitable make complete all as specified and directed. Make:-As per OEM

M&L for taking down 11KV, 400 to 800 Amp RMU, transporting to workshop from sub station (OEM Factory), opening including filling of SF6 gas, re-assembling by authorised technical rep of OEM, bringing back to site safely and re-installing, testing and commissioning the same complete all as specified and directed.

M&L for applying silicone High Voltage Insulator coating (Si-COAT 570 RTV) solution using electric airless sprayer to the inside surface of cable chamber alongwith busbar chamber & breaker chamber including all Spout bushings, insulators, CTs complete of 11 KV Indoor VCB panel including all dis-connection & re-connection of cables etc. complete all as specified and directed. Note:- (i) Quantity of solution consumed per VCB panel shall not be less than 6.8Kg (ii) Each VCB whether I/C or O/G should be treated as one unit.

M&L with replacement of 6mm thick synthetic rubberized cork sheet gasket for top cover, HT/LT bushes for transformer of capacity 100 to 800 KVA including tightening all the bushings and top cover to avoid any oil leakages complete all as specified and directed.

S&F in repairs off load tap changer assembly suitable for transformer of capacity upto 800 KVA as per existing with 5 tapping position including opening top cover, conservator etc complete all as specified and as directed.

M&L for transportation of faulty transformer of any capacity from sub station to factory (approx distance 20 to 30 Kms) after disconnecting, closing the transformers for loading into transporting vehicle with the help of crane, transportation to factory, bringing back the same transformer safely after necessary repair / tests, unloading, re-installation, making necessary HT/LT connections, earth connections and restoration of power supply including all T&P required complete all as specified and as directed.

M&L for isolating the HT supply of outdoor type transformer of capacity 100 to 800 KVA, disconnecting HT and LT connections by opening clamps, bus bar extension and isolating the cables, keeping all the cables out from the HT/LT sides, physically checking of transformer for healthiness such as checking pressure release valve, oil condition etc. and performing transformer tests such as HV/LV megger test, ratio test, magnetic balance test, checking the lead condition from winding to bus rods, necessary soldering / jointing etc complete all as specified and as directed. Note:- (i) All testing shall be done in presence of Engr-in-Charge or his accredited rep and test reports shall be signed by contractor and Engr-in-Charge and kept on record. (ii) If the transsformer found satisfactory then HT/LT connections, assembly etc shall be done by the contractor and transformer shall be charged. (iii) If the transformer fails in these tests then the contractor has to shift the transsformer for winding / overhauling which shall be measured and paid separately. (iv) Cost of winding / overhauling if required shall be measured and paid separately.

Supply and topping up of transformer oil with di-electric strength not less than 60 KV in 2.5mm rodgap into the conservator tank / body tank of the transformer / OCB / FRMUs etc at various locations complete all as directed by the Engineer-in-Charge. Make: Apar (Power Oil) / Savita (Transol) / Asian

Filtration of transformer oil of transformers / FRMUs installed at various locations to achieve di-electric strength not less than 60 KV at 2.5mm gap as per relevant IS with portable filtration plant, testing of the oil for the di-electric strength before filtration and after filtration complete all as directed by the Engineer-in-Charge.

S & F in repair brass spindle / studs for terminal on HT side threaded complete with nut, washers etc of suitable dia for transformer capacity of 100 - 400 KVA complete all as directed by the Engineer-in-Charge.

All as per Sl item No. 80.00 but suitable for 500 to 800 KVA transformer

S & F in repair brass spindle / studs for terminal on LT side threaded complete with nut, washers etc of suitable dia for transformer capacity of 100 - 400 KVA complete all as directed by the Engineer-in-Charge.

All as per Sl item No. 82.00 but suitable for 500 to 800 KVA transformer

M&L for replacement of silica gel breather assembly complete suitable for 100 to 400 KVA transformer as per existing with breather unit and silica gel including connecting with proper necessary gaskets if necessary & removing the unserviceable breather assembly complete all as specified and as directed.

All as per Sl item No. 84.00 but suitable for 500 to 800 KVA transformer

Supply and replacement of silica gel in breather of transformers all as specified and as directed.

S & F HT bushings made out of porcelain, as per existing and suitable for distribution transformer of capacity 100 to 400 KVA including dismantling old and complete all as specified and as directed. Make:- Pactil / BHEL / Jaipuria Brothers

All as per Sl item No. 87.00 but suitable for 500 to 800 KVA transformer

S & F LT bushings made out of porcelain, as per existing and suitable for distribution transformer of capacity 100 to 400 KVA including dismantling old one and complete all as specified and as directed. Make:- Pactil / BHEL / Jaipuria Brothers

All as per Sl item No. 89.00 but suitable for 500 to 800 KVA transformer

M&L for preparation of old exposed painted surfaces of indoor / outdoor type transformer of capacity 100 to 400 KVA and painting the same with two coats of synthetic enamel paint including writing details of transformer on transformer plinth / base with white synthetic enamel paint on black synthetic enamel paint back ground complete & including one coat of white wash on exposed surface of transfomer plinth / base complete all as specified and as directed. Note :- Colour of paint shall be as decided by Engr-in-Charge. Make:- Jotun India Pvt Ltd / Apcolite (Asian) / Luxol (Berger) / Jenson & Nicholson Paints Ltd (Borolac) / Shalimar Paints Ltd (Superlac)

All as per Sl item No. 91.00 but 500 to 800 KVA transformer

M&L for rewinding of distribution transformers of any capacity / size / type by strip opening & rewinding the HV coils (i.e. primary coils) from core assembly safely, removing old defective insulation paper, re-winding the coils with new copper wire as per I.S. of same gauge and existing size together with new insulated materials / bracings before placing in to the transformer and assembling the coil with new DPC insulation and fitting the coils in the chamber, testing and commissioning the transformer and recording the test results complete all as directed. Note: M&L for re-insulation of serviceable coils will be measured & paid separately under relevant items.

All as per Sl item No. 93 but for LV coils

M&L for reinsulation of distribution transformer LV & HV winding of any capacity/size/type fitting the coils in the chamber, testing and commissioning the transformer winding and recording the test results complete all as specified and as directed.

S&F gun metal drain valves suitable for transformer of capacity 100 to 800KVA including dismantling old one complete all as specified and as directed. Make :- Upadhyay / Leader / Zoloto

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