Repair and Maintenance of HT panels and allied works under GE Satwari

Amount

Maintenence,Overhauling and Servicing and calibration of VCB HT 11 KV grade of cap 400 Amp to 1250 Amp by fwg means (a)Check the hardware forwear and tear and also for its termination and tightness. (b) Tightening of complete VCB hardware and control wire.(Tightness test or SF6 gas leakage test). (c) Greasing of the various part of VCB (d) Testing of manual operation (e)Testing of electrical Operation (f) Applying Petrolium jelly on all contacts. (g) Carrying tools and tackles.(h) Checking of closing contact time. (j)Checking of tripping time. (k) Checking of contact resistence (l) Checking/testing of release operation and (m) Replacement of defective parts if needed perform the fwg test and generate the test report as per IE Rules-1956 or latest amendement. cont... as item no 1.01

(a) Contact resistance test (b) Dielectric withstand voltage test (c) Over current and Earth fault relay test (d) Insulation resistance test all as specified and directed. Note: Cost for replacement of defective parts has been measured and paid under relevent items.

Spring Charging motor 220 V AC

Closing Coil 24 V AC

Tripping Coil 24 V AC

Jaw contact

Rack in rack out Handle

Spring Charging Handle

Replacement of complete operating mechanism of SF 6 VCB HT 11 KV breaker vertical drop down horizontal draw out type of cap 630 Amp including testing all as specifiied and directed.

Replacement of power pack of input 220 V AC & output 24 V DC all as specified and directed.

Replacement of IDMT relay with MC 61 in VCB 11 KV all as specified and directed.

Servicing of ACB 800 Amp 430 volt grade including retrofitting and alteration of Al bus bar, sleeve, hardware and DMC support all as specified and directed.

Servicing and routine maintenance of ACB, Make: C&S, Model AH-8D-CS of capacity 800 Amp checking of fastener,checking of shock absorber for leakage,checking of top and bottom trip free mechanisam,closing and tripping spring assy & spit pin,spring cut off micro switches.,earth fault relays ,under voltage relays all as specified and directed. Note: Replacement of any spare part will be measured and paid separately under relevant items.

Servicing / routine maintenance of ACB, Make: C&S, Model AH-8D-CS of capacity 1000 Amp checking of fastener,checking of shock absorber for leakage,checking of top and bottom trip free mechanisam,closing and tripping spring assy & spit pin,spring cut off micro switches.,earth fault relays ,under voltage relays all as specified and directed. Note: Replacement of any spare part will be measured and paid separately under relevant items.

Charging motors 220 V AC.

Earth fault relay for 6D-16D/06N-20S of Cat part No EFR1164P C&S.

Closing coil (6-16 220 V DC) Cat Part No CS-AVH-C-1 C&S.

Shunt Trip 6D-16D/06N-20S(AHA) C&S.

Single phase polyester resin cast CTs for '' AH/AHA'' ACB for thermal release 8D/08N(AHA) 800/5A.

Compact UVT Coil 6D-16D/06N-20S(AHA) Cat part No CS-AUH-V-A C&S.

Auxiliary switch of type 14 way (7NO+7NC) 6D-16D/08N-20S(AHA) Cat part No is CS-AXH-7A7B-116.

Main moving contacts Assembly.

Lower Mechanism of 1600 Amp- 3 pole Cat No. LWRMECH6-16D.

Replacement of HT 11 KV outdoor type triple pole switch air break , gang operated mounted on insulator (15 Nos) and steel frame, with operating mechnisam worked from ground level for current rating upto 400 Amps for working 11000 volts with heavy duty gun metal or brass metal parts both top and bottom contracts with one copper ribon, brass/copper terminal clamps having six nuts & bolts for one connection point complete with locking arrengment and taking down of unserviceable and taking as credit all as specified and directed.

Cable jointing kit for 11 KV grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 240 Sqmm including taking down old joint all as specified and directed.

Cable jointing kit for 11 KV grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 240 Sqmm including taking down old joint all as specified and directed.

Cable jointing kit for 11 KV grade cable for indoor end termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50-95 Sqmm including taking down old joint all as directed.

Cable jointing kit for 11 KV grade cable for outdoor end termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50-95 Sqmm including taking down old joint all as specified and directed.

Cable jointing kit for 11 KV grade cable for indoor end termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120-185 Sqmm including taking down old joint all as specified and directed.

Cable jointing kit for 11 KV grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120-185 Sqmm including taking down old joint all as directed.

Outdoor type cable jointing kit heat shrinkable Straight through complete with all accessories and jointing materials for 3 core 240 sqmm XLPE HT cable complete all as specified and directed.

Taking out unserviceable LT/HT cable of any size from trenches/duct etc carefully including bricks and keeping in safe custody either for relaying or disposal all as specified and directed.

Supply, laying & testing HT cable XLPE insulated, screened PVC bedded, galvanized steel strip or wire armoured electric power cables (heavy duty) with aluminum conductor, 11000 volts grade cross sectional area 240 Sqmm,3 core all as specified and directed.

Supply, laying & testing HT cable XLPE insulated, screened PVC bedded, galvanized steel strip or wire armoured electric power cables (heavy duty) with aluminum conductor, 11000 volts grade cross sectional area of size 85 Sqmm 3 core complete all as specified and directed.

Excavating in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth for laying of cables & foundation of poles ,stay assembly and getting out in any type of soil complete all as specified and directed .

Returning, filling in excavated approved soil, including spreading, leveling, watering and well ramming in layers not exceeding 25cm each complet all as specified and directed.

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

Sand cushioning to under ground cables ( 8 cm deep before laying of cable and 15 cm deep over the cable ) & punning gently complete all as specified and directed .

Bricks, klin burnt, well burnt, whole , old size of compressive strength not less than 50 kg per sq cm laid in trenches as cable cover / protection complete all as specified and directed .

Taking out old aggregate of any size upto 150 mm deep from 33/11 KV yard and scrubing of shurbs, roots, grass from wall/ floors and filling of yard with 40 mm graded coarse aggregate of 150 mm thickness through out the yard all as specified and directed.

Spreading of pestiside to protect from unwanted shurbs, grass, roots in monthly basis on 33/11 KV switch yard (Area Appx 100 sqm) all as specified and directed.

Replacement of on load change over switch with sheet steel enclosures of cap 800 Amp three phase 430 V including all necessary electrical connection all as specified and directed .

Lighting arresters explusion type complete with all fittings, distribution class, discharge capacity 65 kilo Amp suitable for 11 KV including work steel work reqd for mounting on steel structure all as specified and directed.

Earthing complete with galvanised steel earth plate electrode 600 x 600 x 6mm thick, burried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of the plate not less than 1.5m below normal ground level, connected ot galvanised iron strip of size 25 x 4 mm earth lead by means of bolt, nuts, washers of galvanised iron or steel, earth strip protected by and including GI pipe 40mm bore (light grade) and connected to main test point as directed including concrete pit in PCC (1:3:6) type C-1, precast RCC (1:1½:3) type A-1 cover slab of size 54 x54 x 5 cm reinforced with 8mm dia TMT bars @ 150 mm C/C both ways with one handle for lifting, made out of 8mm dia TMT bar embedded in precast cover slab, funnel, wire mesh. cont... as item no 43.01

20mm bore GI pipe (medium grade) for watering, charcoal and salt in alternate layers, including necessary excavation and earth work in any type of soil complete all as shown on electrical plate No 5 of SSR Part-I and testing complete all as specified and as directed.

Earth continuity conductor or main earthing lead fixed on pole with MS clamp and porcelene insulator by nuts, bolts and washer on any other indicated situation for loop earthing etc. as required of size 25 x 4 mm galvanised strip complete all as specified and as directed.

Test point terminal block made of gun metal or phasphorus bronze size 75X75X25 mm on pole and screwed including 3 Nos. 8 mm dia 25mm long hex. head screw complete all as specified and as directed.

Dismantling cross-arms of M.S. channel or angle sections etc. complete and setting aside for re-use with in 50m complete all as specified and as directed.

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.

vishesh engineers

M/S S K Electricals Regd

M/S RAJ ENGINEERS