REPAIRS MAINTENANCE OF E M INSTALLATION AND EXTERNAL ELECTRICAL ITEMS AT VSN NAGPUR

Amount

Disconnecting and dismantling & complete overhauling of 33/11 KV power Transformer capacity 1500 KVA, Make CG ser No. DT3565/1 after disconnecting of electric supply and earth connections including transportation to work shop, drained out transformer oil, lifting/removing of top cover of transformer & cores with chain pully blocks/crane, cleaning of sludge and washed down with the help of spray of clean oil and re-assembling of transformer with S&F of new gasket set assembly, replacement of nuts, bolts and washers as required, re filling of Transformer oil after centrifuging at satifactory dielectric strength complete after electric connections and testing all as specified and directed.

M&L for Filling of new transformer oil having dielectric strength not less than 60 KV complete including centrifuging of oil (if required) up to getting dielectric strength near 60 KV all as specified and directed.

M&L for replacement of HV copper coil complete all as specified and directed.

M&L for replacement of LV copper coil complete all as specified and directed.

M&L for reinsulation of existing HV copper coil complete all as specified and directed.

M&L for reinsulation of existing LV copper coil complete all as specified and directed.

M&L for replacement of bushing, top gasket including nuts and bolts and etc all as specified and directed.

M&L for Ovan Drying complete all as specified and directed.

Taking out existing LT/HT cable off sizes up to 300 Sqmm 2 to 4 core from duct/wall/floor/trenches and re-laying the same serviceable cable after fault rectification in existing position with supply and fixing connecting materials such as thimbles, lugs, nuts, bolts and washers as required at site all as specified and directed.

Taking down, Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 33000 volts grade, of size 3 core 300 sq mm Complete all as specified and directed.

Supply and fix cable jointing kit for 33 KV grade cable for outdoor termination heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 3 Core 300 Sq mm complete all as specified and directed.

Taking down the unserviceable HT / LT cable of any size from trenches/ walls /floor etc Supply & laying of HT XLPE Insulated screened aluminium stranded conductor cable PVC bedded galvanized strip armoured heavy duty 11 KV cross sectional area 120 Sqmm 3 Core conforming to IS 7098 laid in duct/trenches complete all as specified and directed

Supply and fix heat shrinkable straight through cable jointing kit for 11 KV grade cable joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 Sq mm complete all as specified and directed.

Supply and fix cable jointing kit for 11 KV grade cable for indoor termination heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 Sq mm complete all as specified and directed.

Supply and fix cable jointing kit for 11 KV grade cable for outdoor termination heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 Sq mm complete all as specified and directed.

M&L for Lightning arresters expulsion type complete with fittings, transmission class, discharge capacity 65 kilo amp suitable for 33 KV supply all as specified and directed. Make : AREVA/Schnieder

Repair/Maintenance/Servicing of 33000 Volt CT & PT any type and size by taking shut down,cleaning and removing of carbon particles, rubbing of heated portion of bus bar and cleaning complete and fine setting, tightening of all joints in bus bar, earthing etc and welding of broken parts including Transformer Oil etc. and replacement of u/s nuts/bolts/washers and replacement of corroded glands, lugs/ thimbles and tightening them properly and testing all as directed.

Supply, installation, testing and commissioning of CT 11 KV epoxy type ratio 30/5+5 Amps accuracy Class-I 13 .1 K A for 1 sec for CT ratio = 30/5 A (including 50/5 A) single pole (Three core type) fixing on existing 11 KV panel including necessary connections, any modification required, addition/alteration required for fixing CT in existing 11 KV panel complete all as directed by Engineer-in-Charge.

Supply and fixing GI pipe light grade with necessary fittings in floor /piller/fixed on pole of size 80 mm dia complete all as specified and directed.

S & F in replacement of danger notice plate of 1.6mm thick mild steel sheet vitreous enamelled white with letters, figures and conventional skull and bones in signal red colour and fixed with M S Clamps of size 25x3mm, bolt and nut approved size for HT Panels, 25x20cm size including taking out old unserviceable danger notice plate complete.

Cutting of vegetation/grasses earth hips etc, cleaning and levelling of cutting areas in various electrical installation areas, surrounding of HT/LT poles panels complete all as specified and directed.

Material & Labour for Cement concrete in foundation, filling and mass concrete type B2 1:2:4 (40mm graded aggregate), not exceeding 15 cm in depth for plinth protection path including necessary excavation, form work and dismantling of old surface complete all as specified and directed.

M & L for PCC cable route indicator in mix of 1:2:4 type B1 of size 450x200x75mm with oval shape and writing the letter HT/LT cable with synthetic enamel paint and embedded with PCC foundation type D2 1:4:8 of size minimum 250 mm depth including necessary earth work complete all as specefied and directed.

Supply & fixing in replacement 100 AH, 12V Maintanance free dry battery including replacement connecting materials such as terminals,lead, thimbles, lugs, nuts, bolts and washers as required at site all as specified and directed. Make:- Exide, Amco.

M&L for preparing surfaces of electric HT 33 KV Structures complete at AF VSN, Nagpur of any make and height of pole up to 10 Mtrs above ground level including MS cross arms, AB Switch pipe, DO Fuse assembly,MS clamps, brackets, bracket clamps, cable protection pipe stay etc of any sizes and shape & dusting, cleaning the surface complete and applying one coat of aluminium paint completely as directed by Engr-in-Charge. ( Note :- The work has to be carried out within 6 hrs of electric shutdown, accordingly manpower shall be arranged )

Supply and replace Load break switch assembly 400A 3 Phase 11 KV in all compact Sub Station all as spectified and directed by Engineer-in-Charge. Make : MEGAWIN/CG Lucky

M&L for detection of fault through fault locating high voltage mobile machine to locate the fault in 11 KV HT cable by giving high voltage surge and to find out exact location of fault all as directed by the Engineer-in-Charge at site. (Note : The Item includes transportation, charging machine upto detecting fault at a time and fault should be immediately located after intimation from rep of this office)

Supply and fixing of Mild steel plates, plain or chequered, 5mm thick or over in thicknesas in available size Fe-410-W(Gde-E-250) quality as a cover of open ducts to avoide any incedents/acidents during repair works including cutting in sutable size. wherever required fixing with grouted nuts and bolt the charges for nuts and bolt grauting work and drilling holes in chequered plates are also included as specified and directed by Engr-in-Charge at site.

Material and labour for sand cushioning below/above and around cable in trenches/ducts with river sand all as specified and directed.

Supply & fixing Over current & Earth Fault protection relay CGI 14N/C etirely digitalized and integrated with microprocessor technology. It has a user friendly interface, a-button keypad & a 16x2 LCD display on the front panel and also provide quick protection against one or both over current & earth element and breaker failure protection technology as well for imphasizing safety. Make : CG (Model Number- CAL13E1F) / UniTech solution / IMT / ASHIDA or equivalent.

N. H. Saluji & Associates