REPAIRS / MAINTENANCE TO EXTERNAL ELECTRIFICATION SYSTEM OH HT AND LT LINES UG CABLES APFC PANELS TRANSFORMERS AND ALLIED WORKS AT AF STATION BEGUMPET UNDER GE AF HAKIMPET

Amount

Dismantling and taking down Steel pole/ Struts of any Size complete all as specified and as directed

Supply , fix and erect steel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts & screws as specified type 410 SP-31 (9.00 metres long) including painting of poles with two coats of aluminium paint over a coat of red oxide primer on all exposed surfaces and black bituminous paint on embedded portion complete all as specified and as directed

Supply , fix and erect steel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts & screws as specified type 410 SP-55 (11.00 metres long) including painting of poles with two coats of aluminium paint over a coat of red oxide primer on all exposed surfaces and black bituminous paint on embedded portion complete all as specified and as directed

Dismantling and taking down Air Break Gang operated swith complete all as specified and as directed

Supply and fix switch air break, gang operated, triple pole, mechanically operated, vertical type, mounted on insulators and steel frame, with operating mechanism worked from ground level for current rating upto 200 Amps suitable for 11000 volts grade complete all as specified and as directed.

Servicing of gang operated switch on Two/ four pole structure at elevated height and repairing faulty components like knife, connecting copper strip, nut, bolts & washers of GI/brass as and providing suitable lubrication to component of switch air break, gang operated, triple pole, vertical or horizontal type mechanically operated for current rating upto 200 Amps suitable for 11000 Volts grade complete all as specified and as directed.

Taking down HT UG cable any size and in any position complete all as specified and as directed

Supply, laying HT ,U/G Cable , connecting and testing of XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts grade (earthed) of cross sectional area 95 Sqmm 3 core complete all as specified and as directed.

Description all as per Ser item No 8 above but cable size 150 sqmm 3 core complete all as specified and as directed

Dismantling and taking down insulators of any type complete all as specified and as directed

Supply and Fix in Pin type ,Polymer insulator 11KV 320 cd5Kn for 11000 Volts grade complete including all accessories yoke,clamps,Nuts,bolts etc complete all as specified and as directed

Supply and Fix Disc type ,Polymer insulator 11KV 320 cd 45Kn for 11000 Volts grade complete including all accessories yoke,clamps,Nuts,bolts etc and including dismantling of old unserviceable insulator complete all as specified and as directed

S & F, in replacement, LED post top lantern with aluminium die-cast housing cum heat sink with PMMA diffuser in IP- 65 protection with 30 W LED Lamp complete all as specified and as directed

Dismantling unserviceable ACSR conductor and S&F new ACSR conductor in OH lines of HT / LT / street light conductor (Squirrel / Weasel) including binding with aluminium wire, in between every span complete all as specified and as directed

M&L for preparation of old painted surfaces of HT 11 KV four pole structure and painting with two coats of 1st quality aluminium paint over a coat of red oxide primer on all steel surfaces such as poles, channels, angles and clamps of any description complete all as specified and as directed

Description all as per Ser item No. 15 above but of two pole structure. complete all as specified and as directed

M&L for preparation of old painted surfaces of HT 11 KV, 11.00 metres long pole and painting with two coats of aluminium paint over a coat of red oxide primer above 1.5M height from ground level and on all steel surfaces such as channels, angles, clamps, nuts, bolts and washers and zebra marking using reflective tape, two layers each of black & Yellow colour upto 1.5 metres height from ground level, numbering the poles with letters of height not less than 4 cm, complete all as specified and as directed.

Description all as per Ser item No. 17 above but of LT poles of 8 / 9 metres long poles complete all as specified and as directed

Taking down unserviceable lightning arrestors and Supply and fix new lightning arrestors, 10kA, expulsion type complete with all fittings, transmission class, max. discharge capacity 65 kA suitable for 11000 Volts grade supply, complete all as specified and as directed.

Locating and pin point electric Fault precisely on high voltage (11KV) Under Ground Cable Falt Locating System which is the most Advanced system in power cable fault detection combining the best-in market technologies in to a single fully automatic centralized setup with high reliabiliy and Multi-levei safty standards complete all as specified and as directed

Description all as per Ser item No 20 above but fault finding at different site on same visit of fault detecting team complete all as specified and as directed

Taking down the failed cable from its position, supply, prepare and connect cable jointing kit for 11KV (Earthed) grade cable, for outdoor end termination, cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE, armoured aluminium conductor cable of size 50 Sqmm to 95 Sqmm complete all as specified and as directed.

Description all as per Ser item No 22 above but of size 120 Sqmm to 185 Sqmm complete all as specified and as directed

Taking down the failed cable from its position, supply, prepare and connect cable jointing kit for 11KV (Earthed) grade cable for Indoor end termination, cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 Sqmm to 95 Sqmm complete all as specified and as directed

Description all as per Ser item No 24 above , but of size 120 Sqmm to 185 Sqmm complete all as specified and as directed

Taking down the failed cable from the excavated trench, material and labour for straight through cable jointing kit for 11KV (Earthed) grade cable, cold shrink type complete with accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 Sqmm to 95 Sqmm complete all as specified and as directed

Description all as per Ser item No 26 above but of size 120 Sqmm to 185 Sqmm complete all as specified and as directed

Excavation in trenches not exceeding 1.5 m in wide and not exceeding 1.5m in depth for laying of cables / stay assembly / pipe lines and getting out in soft / loose soil complete all as specified and as directed in soft loose soil

Description all as per Ser item No 28 above but Hard / dense soil complete all as specified and as directed

Description all as per Ser item No 28 above but Soft/ disintegrated rock complete all as specified and as directed

Excavation in trenches not exceeding 1.5 m in wide and exceeding 1.5 mtr in depth but not exc 3.0 mtr in depth for laying of cables / stay assembly / pipe lines and getting out in soft / loose soil complete all as specified and as directed in soft loose soil

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

Removing excavated soil to a distance not exceeding 50 mtr and depositing where directed at a level not exc. 1.5 mtr above the starting point complete all as specified and as directed.

Supply and spreading clean, fine, dry river sand in trenches for cushioning of under ground cable / inside transformer yard complete all as specified and directed by Engineer-in-Charge. Note: - Only punned thickness shall be measured for payment purpose.

Supply and laying un-reinforced pre-cast concrete cable covers, Class HV, type 1, flat, of size 300 x 180 x 40 mm for cable protection complete all as specified and as directed.

Supply and lay common burnt clay building bricks sub class 'B' of designation 75 laid in trenches as protection to cables complete all as specified and as directed.

Supply and fixed Danger Notice board of 1.6mm thick mild steei sheet vitreous enamelled white with letter, figures and conventional skull and bones in a single Red colour anf fixed with MS clamps ,bolts and nuts of approved size for LT 20 cm X 15 cm Size complete all as specified and as directed.

Description all as per Ser Item No 37 above but for HT 11 KV installation of size 25 cm X 20 cm complete all as specified and as directed.

Taking down unserviceable GI tubing and S&F for new galvanized steel tubing, light grade, of 100 mm dia with all fittings for protection of cable complete all as specified and as directed .

Taking down unserviceable GI tubing and S&F for new galvanized steel tubing, light grade, of 80 mm dia with all fittings for protection of cable complete all as specified and as directed .

Taking down unserviceable GI tubing and S&F for new galvanized steel tubing, light grade, of 50 mm dia with all fittings for protection of cable complete all as specified and as directed .

Taking down unserviceable GI tubing and S&F for new galvanized steel tubing, light grade, of 40 mm dia with all fittings for protection of cable complete all as specified and as directed .

M&L for repair of transformer by carefully dismantling the HT / LT and earth connections, draining out the oil from transformer to the required level and storing in cleaned containers, opening the top cover and conservator tank from transformer, for rectifying the defects and dismantling and replacing burnt out LT/ HT bushes and fixing back the same using new oil seal, gaskets, GI nuts, bolts & washers of suitable size, making all HT / LT connections as per the original, re-filling the transformer oil to the required level and testing on completion for capacity upto 400 KVA complete all as specified and directed. NOTE:- (i) LT/ HT bush, transformer oil for topping up will be measured and paid separately as supply only under relevant items complete all as specified and as directed .

Disconnecting the HT / LT connections, taking out the transformer from its plinth at any situation with the help of suitable crane and transporting the transformer to workshop for carrying out necessary repairs and bringing back and re-install in its original place, of capacity upto 400 KVA complete all as specified and as directed .

Disconnecting the Electric cable connections, taking out the voltage stabilizer from its position at any situation with the help of suitable pully / crane and transporting the voltage stabilizer to workshop for carrying out necessary repairs and bringing back and re-install in its original place, of capacity upto 75 kVA complete all as specified and as directed .

Taking out complete core from transformers / Voltage stabilizer of capacity upto 400 KVA, cutting and removing burnt out winding and re-winding the same with super enamelled copper conductor of existing gauge using proper insulating materials, applying varnish, drying in heating chamber, re-assembling the transformer as per the original and testing on completion complete all as specified and as directed. Note:- Shifting of transformers / Voltage stablizer from installed position to Civil workshop and back will be measured and paid seperately under relevant items.

Filteration of transformer oil at site of 11KV / 433V, indoor / outdoor transformer / Voltage stabilisers of any capacity installed at various locations, with mobile type filtration plant to acheive minimum di-electric strength As IS 40 KV with 2.5 mm Gap gap, as per relevant I.S. and Topping up of transformer oil into the body / conservator tank of transformer upto required level, including testing and recording the values of di-electric strength of oil before and after filtration at site with transformer oil testing machine complete all as specified and as directed. NOTE:- Transformer oil will be measured and paid seperately as ''supply only'' items of schedule.

Supply only transformer oil for topping up in transformers complete all as specified and as directed . Make:- Power Oil / Transol / GET / Servo / Electrole / Savita

Supply only HT bush of capacity upto 250 KVA. complete all as specified and as directed .

Supply only HT bush of capacity above 250 KVA and upto 400 KVA.complete all as specified and as directed .

Supply only LT bush of capacity upto 250 KVA. complete all as specified and as directed .

Supply only LT bush of capacity above 250 KVA and upto 400 KVA. complete all as specified and as directed .

Supply only HT bush with copper rod of capacity upto 250 KVA. complete all as specified and as directed .

Supply only HT bush with copper rod assembly of capacity above 250 KVA and upto 400 KVA. complete all as specified and as directed .

Supply only LT bush with copper rod assembly of capacity upto 250 KVA. complete all as specified and as directed .

Supply only LT bush with copper rod assembly of capacity above 250 KVA and upto 400 KVA. complete all as specified and as directed .

M&L for preparation of old painted surfaces of 11 KV / 433 V outdoor type distribution transformer, painting with spray gun through out externally with two coats of synthetic enamel paint of best quality of approved colour and writing machine number in white colour on black background complete all as specified and directed for the capacitys of transformer 100 KVA complete all as specified and as directed .

Description all as per Ser item No 57 above but size above 100 KVA and upto 250 KVA. complete all as specified and as directed .

Description all as per item No 57 above Transformer of capacity above 250 KVA and upto 400 KVA. complete all as specified and as directed .

Disconnecting the HT / LT connections of a defective transformer of any capacity and shifting the trolley mounted mobile type transformer of capacity 200 KVA to the required location with tractor or crane if required and making all necessary HT and LT connections, testing and return back to the original location after completion of transformer repairs and reconnection complete all as specified and as directed ..

Taking down unserviceable breather and Supply & fix silica gel breather, suitable for transformer including sufficient quantity of silica gel complete all as specified and directed for capacity of transformer 100 KVA complete all as specified and as directed .

Description all as per Ser item No 61 above but Transformer of capacity above 100 KVA and upto 250 KVA. complete all as specified and as directed .

Description all as per Ser item No 61 above but Transformer of capacity above 250 KVA and upto 400 KVA. complete all as specified and as directed .

M&L for trimming of tree branches around HT / LT overhead lines, upto 3m on both sides of over head lines and depositing where directed at a distance not less than 50 mtr complete all as specified and as directed. Note:- The item will be measured in span length. The approx. span length is 30 M to 40 M.

Stringing and fixing only in position of existing sagged ACSR conductor in OH lines of HT / LT/ street light conductor including binding with aluminium wire complete all as specified and as directed.

M&L for loose filling with aggregate of gauge 40 to 80 mm of broken stone or boulders, deposited, spread and levelled in layers not exceeding 15cm thick, watered and rammed to a true surface of transformer and two pole / four pole structure complete all as specified and as directed.

Taking down the LT Cable damaged / punctured cable from the excavated trench for cutting and removing the damaged portion of the cable, jointing the serviceable part of the cable of the cross-sectional area 2 core x 10 Sqmm to 4 core x 16 sqmm complete all as specified and as directed. (Note: Excavation, jointing and relaying shall be measured separately under relevant items)

Description all as per Ser item No 67 above but size 3.5 core x 25 Sqmm to 3.5 core x 50 sqmm complete all as specified and as directed .

Description all as per Ser item No 67 above but 3.5 core x 70 sqmm to 3.5 core x 150 Sqmm complete all as specified and as directed .

Relaying the repaired and serviceable part of the cable in the same trench or new trench as per site conditions, of the following cross-sectional area odf size 2 core x10 Sqmm to 4 core 16 Sqmm complete all as specified and as directed. (Note :- Excavation, jointing and relaying shall be measured separately under relevant items)

Description all as per Ser item No 70 as above but size 3.5 core x 25 Sqmm to 3.5 core x 50 sqmm complete all as specified and as directed .

Description all as per Ser item No 70 above but size 3.5 core x 70 sqmm to 3.5 core x 150 Sqmm complete all as specified and as directed .

Supply &Laying only LT XLPE insulated heavy duty electric cables with aluminium conductor, 1100 volts grade, of cross-sectional area of size 2 core 10 Sqmm complete all as specified and as directed.

Description all as per Ser item No 73 above but size 16 Sqmm 4 Core complete all as specified and as directed .

Description all as per Ser item No 73 above but size 25 Sqmm, 4 Core complete all as specified and as directed .

Description all as per item No 73 above but size 95 Sqmm, 3.5 Core complete all as specified and as directed .

Taking down change over switch and S&F new onload change over switch with sheet metal enclosure, TPN, 415 volts, 50 Hz, AC of 100 Amps capacity complete all as specified and as directed.

Description all as per Ser item No 77 above but capacity 200 Amps complete all as specified and as directed .

Supply anf fix in repair MCCBs of any description from the panel board and S&F new MCCBs, 3 pole, 415 volts, to suit in the panel as existing type and model, including modification to the panel as required, of capacity from 25 to 100 Amps, breaking capacity 25 KA,Thermal type , complete all as specified and as directed.

Supply and fix in repair MCCBs of any description from the panel board and S&F new MCCBs, 3 pole, 415 volts, to suit in the panel as existing type and model, including modification to the panel as required, of capacity 125 Amps, breaking capacity 25 KA, Thermal type complete all as specified and as directed. Make: Siemens / L&T / Schneider / GE Controls.

Supply and fix in repair MCCBs of any description from the panel board and S&F new thermal adjustable MCCBs, 3 pole, 415 volts, as existing type and model, including modification to the panel as required, of capacity 160 Amps, breaking capacity 36 KA ,Thermal type complete all as specified and as directed.

Supply and fix in Repair MCCBs of any description from the panel board and S&F new thermal adjustable MCCBs, 3 pole, 415 volts, to suit in the panel as existing type and model, including modification to the panel as required, of capacity 200 Amps with breaking capacity 36 KA complete all as specified and as directed. Make: Siemens / L&T / Schneider / GE Controls.

Supply and fix in repair MCCBs of any description from the panel board and S&F new thermal adjustable MCCBs, 3 pole, 415 volts, to suit in the panel as existing type and model, including modification to the panel as required, of capacity 250 Amps, breaking capacity 36 KA complete all as specified and as directed. Make: Siemens/L&T/Schneider/GE Controls.

Supply and fix in repair MCCBs of any description form the panel board and S&F new MCCBs, 3 pole, 415 volts, of existing type and model suitable for panel mounting of capacity 315 Amps, breaking capacity 36 KA complete all as specified and as directed. Make: Siemens / L&T / Schneider / GE Controls.

Supply and fix in repair MCCBs of any description form the panel board and S&F new MCCBs, 4 pole, 415 volts, of existing type and model suitable for panel mounting of capacity 400 Amps, breaking capacity 36 KA complete all as specified and as directed. Make: Siemens / L&T / Schneider / GE Controls.

M & L Earthing complete with galvanised steel earth plate electrode 60 cm × 60 cm.× 6.0 mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less'than 1.5 metres below normal ground level, connected to galvanised earth lead wire 25 mm X 4 mm dia by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 connected to earthing test point all as specified or indicated including testing on completion complete all as specified and as directed .

M & LEarth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 25 X 4 mm size galvanised iron strip complete all as specified and as directed .

Cutting and removing the damaged portion of the LT cable, supply, prepare and connect cable jointing kit for 1.1 KV grade cable for cold shrink type straight through joint complete with jointing material and accessories suitable for XLPE, armoured aluminium conductor cable of size 4 x 16 Sqmm complete all as specified and as directed. Make:3M/Reychem/Dension. Note:- Earth work will measured and paid seperately under relevant items.

Description all as per Ser item No.88 above but for cable of size 3.5 /4 x 25 sq mm to 3.5 x 50 sq mm complete all as specified and as directed ..

Description all as per Ser item No.88 above but for cable of size 3.5 x 70 sq mm to 3.5 x185 sq mm . complete all as specified and as directed .

Supply, mix and pouring the Magnesium sulphate either through the existing watering pipe or by making holes sorrounding the earth pit, at the rate of 5Kgs per pit, for charging the earth pit, for improving the ER values including measuring and recording the values complete all as specified and as directed ..

M & L for Road cutting / hard standing for taking up or laying of LT UG cable upto a depth of 15 cm, after laying of cable, well ramming to the excavated soil and repair the exvcavated portion of roads as existing or by providing suitable mixture of PCC complete all as specified and as directed .

M&L for PCC 1:4:8, type D-2 mix using 40 mm graded stone aggregate as in foundation for erection of poles / stay assembly etc complete including breaking and removing the old concrete complete all as specified and as directed .

M&L for PCC 1:3:6, type C-1 mix using 40 mm graded stone aggregate as in mass foundation to pole etc., including breaking and removing the old concrete necessary form work complete all as specified and as directed.

M&L for PCC 1:2:4, type B-1 mix using 20 mm graded stone aggregate as in coping to pole etc., including breaking and removing the old concrete necessary form work complete all as specified and as directed.

Srinivash Engineers