|
| 1 | Repair / servicing to HT Switch gear having Ring Main Unit capacity 11 KV rating of capacity up to 630 A by replacing defective/wornout parts of screw, nut bolt , washer and spring to adjustment of gaps for smooth operation all as detailed below:-(a) Opening the metal enclosure and checking the external factors of moisture , dust and heat for protecting the switch gear and controll components(b) Cleaning of RMU with air blower and removing dust particals.(c) Cleaning of insulating places of RMU by using CTC/CRC/Thinner as required and recommended by the manufacturer.(d) Checking the Movable contact gap mechanism if gap exceeds the permissible limis, readjust as recommended.(e) Cleaning the main contacts to remove carbon or any other unwanted particals if visible.(f) Dismentling and cleaning the insulated surfaces with CTC and CRC.(g) Checking/repair replacement of all electrical wiring for electrical/manual operation of panel including measuring IR values.(h) Checking of all nuts/bolts, springs, levers, latches, connnectors etc and adjustments as required and recommended by the manufacturer.(j) Checking the SF6 (Sulfur hexafluride) gas /Oil/air level) for maintaining proper insulating switch gear system.(k) Checking the incoming and out going cable termination's insulation.(l) Checking of all moving Gear mechanism for proper functioning of RMU and adjustment as per manufacturer recommendations of protection and control of power ditribution system.(m) Checking the Circuit breaker working of overload and fault curreant interuption. , load break switch and earthinng switch and fuse switch (n) Checking the Load break switch working as isolate the faulty section of the network.(o) Checking Earthing switch for safe path for flow of electricity incase of earth fault. |
| 2 | Material and labour for primery injection test and secondery injection test include record the primery injection test as inject the multiple of the fault rated currunt of the breaker for measuring the tripping time. Secondery injection test as injects a ratio of fault rated current to measure how long take period to trip. |
| 3 | Suppy and Refilling the SF6 gas as per manufacrare recommendation and checking the leakage and insulated level after refilling all as specified and directed by Engr in Charge. |
| 4 | Repair and Replacement of shock absorber of door assy of RMU unit any type /capacity including servicing, dusting, cleaning , greasing , tighting the nut /bolt of moveable and unmovable parts of the complete encosure door, all as specified and directed. |
| 5 | Supply and fix in replacement of U/S CM CT 20/5 current rated primer current is 20Amp and secondery rated current is 5Amp , burden of current transformer is 1 VA suitable precision all as per site including testing and commissioning after fixing of CT and sample all as specified and directed by Engr in charge. |
| 6 | Supply and fix in replacement of U/S CM CT 50/5 current rated primer current is 50Amp and secondery rated current is 5Amp , burden of current transformer is 1 VA suitable precision all as per site including testing and commissioning after fixing of CT and sample all as specified and directed by Engr in charge. |
| 7 | Supply and fix in replacement of U/S CM CT 100/5 current rated primer current is 100Amp and secondery rated current is 5Amp , burden of current transformer is 1 VA suitable precision all as per site including testing and commissioning after fixing of CT and sample all as specified and directed by Engr in charge. |
| 8 | Servicing and repairing of LT Air Circuit Breaker by drawing out mechanically ACB from cabinet clearing entire parts greasing, oiling tightening of nuts/bolts and replacing following unserviceable spare parts and reassembling the same. complete all as specified and as directed(a) Supply only under voltage release coil 230 Volts(b) Supply only Shunt release coil 230 Volts(c) Supply only closing coil 230 Volts |
| 9 | Repair / servicing to HT pannel of having vacuum circuit breaker 11 KV rating of capacity current rating up to 800 A by replacing defective/wornout part, adjustment of gaps for smooth operation all as detailed below:-(a) Cleaning of VCB with air blower and removing dust particals(b) Cleaning of insulating places of VCB by using CTC/CRC/Thinner as required and recommended by the manufacturer.(c) Checking the acring contact gap of vaccum intrupter if gap exceeds the permissible limis, readjust as recommended(d) Cleaning the main contacts to remove carbon or any other unwanted particals if visible.(e) Dismentling and cleaning the insulated surfaces and arc barrier with CTC and CRC.(f) Checking/repair replacement of all electrical wiring for electrical/manual operation of panel including measuring IR values.(g) Checking of all nuts/bolts, springs, levers, latches, connnectors etc and adjustments as required and recommended by the manufacturer.(h) Recording IR values of CTs and PTs.(j) Cleaning of bus bar spout.(k) Checking of all moving parts for proper functioning of VCB and adjustment as per manufacturer recommendations. |
| 10 | Program the existing numerical relay any model and type for over load and earth fault settings with respect to trip settings of HT panels sub station or other sub stn in such a way that faults are arrested locally including arranging or cracking of existing password all as required for smooth functioning of the HT panels complete all as specified and directed. |
| 11 | Supply and fix in replacement of U/S relay any type and make with Numerical relay microprocesser based model including retrofiting to the existing panels and programming the relays for overlaod and earthfault setting with respect to trip settings of HT panels Sub station or other sub station insuch a way that fault are arrested locally the tip testing carry over suitable with 11KV sub station/other complete all as specified and directed. |
| 12 | Excavation in trenches not exc. 1.5 m wide not exc. 1.5 m in depth; for laying of cables not exc. 10 Sqm on plan and getting out , trimming sides, forming bottom surface to required level complete in hard/dense soil all as specified and as directed. |
| 13 | Returning, filling in, including spreading, levelling, watering and well ramming in layers n.exc. 25cm thick as in soils all as specified and as directed. |
| 14 | Removing of excavated soil to a distance not exc. 50m and depositing where directed at a level n.exc 1.5m above starting point all as specified and as directed. |
| 15 | M&L for laying precast concrete cable covers, class HV, type 1, flat size 300mm x 180mm x 40mm complete all as specified and as directed. |
| 16 | M & L for dry sand cushioning to PVC under ground cable with screened and washed sand and punning to provide a required cover complete all as specified and directed.Note :- Thickness after punning shall be considered for payment. |
| 17 | Supply only ROUNDUP HERBICIDE CHEMICAL for grass killing agent in E/M Installation maintenance for all as specified and directed. |
| 18 | Supply and spread graded coarse aggreagate 20mm graded loose staking inside the chain fencing area of transformer. |
| 19 | Supply and spread graded coarse aggreagate 40mm graded loose staking inside the chain fencing area of transformer. |
| 20 | PCC 1:3:6 type C1 using 20mm graded stone aggregate for coping of poles/plinth blocks of HT poles etc including fair finishing the exposed surfaces even and smooth without using extra cement including necessary form work complete all as specified and as directed. |
| 21 | Taking down existing 11 KV grade cable and providing new XLPE insulated, screened, bedded galvanised steel strip/wire armoured heavy duty with aluminium conductor of cross sectional area 120 Sqmm 3 core with cable protection works (as aplicable) laid in trenches/ducts/fixed on pole/wall/laid under road /path/culvert/drains/encased in pipe, including necessary lugs,joiniting and tesing complete all as specified and directed. |
| 22 | All as per item No 22 in above but 95 Sqmm x 3.core all as speicified Please Enable Macros to View BoQ information |
| 23 | All as per item No 22 in above but 95 Sqmm x 3.core all as speicified Please Enable Macros to View BoQ information |
