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| 1 | Material and labour forsub-main wiring of size (2 x 6.00) sq. mm + (1 x 6.00) sq. mm earth wire, FRLS, PVC insulated, multi stranded, copper conductor, single core cable concealed in walldrawing through and including non-metallic PVC conduit (medium grade) with all fittings and accessories ISI marked for conduits & sinkings for modular boxes & making good to walls, floors etc. including taking down of old unserviceable sub main wiring complete all as specified & as directed. Note:- (i) Two runs of PVC wire, one run of earth wire & one run of PVC rigid conduit (medium grade)/ Flexible hose will be measured as one length. (ii) Cutting chesses and making good, including necessary putty work for the disturbed surfaces is deemed to be included in the unit quoted rates. |
| 2 | Supply and fix in repair changeover 100 Amp capacity of frame size 2, with sheet steel enclosure with operating handle suitable for horizontal as well as vertical mounting, inbuilt two changeover auxiliary contact, confirming to IEC 60947-3, IS/IEC60947-3, flushing to wall and making good the disturbed surfaces with all other accessories including necessary connection complete all as specified and directed. |
| 3 | Supply and fix in repair 4 Way, IP43, IK-09 metal double Door, MCCB vertical DB fitted with bus bar and blanking plates, neutral link with 4 pole MCCB as Incomer and SP/ TP MCBs as out goings, blanking plates, flushing to wall/ fixing inside enclosure and making good the disturbed surfaces with all other accessories including necessary connection complete all as specified and directed. |
| 4 | Supply and fix in repair 6 ways TPN DB, 415V, double door, IP-43, Ik-09 with metal door, rated bus bars, earth bar, neutral links complete including blanking plates as required and fixed flush to wall/ other surface complete all as specified and as directed. |
| 5 | Supply and fix in repair 4 waysTPN DB, 415V double door, IP-43, Ik-09 with metal door, rated bus bars, earth bar, neutral links complete including blanking plates as required and fixed flush to wall/ other surface complete all as specified and as directed. |
| 6 | Supply and fix in repair MCCB, 4 pole, (63-80)Amp rating (Ics = 100% Icu), 415Volts,25 KA breaking capacity, with adjustable thermal and fixed magnetic setting and making cut in existing panel/ DB for fixing of MCCB, including spreader terminal, lugs, glandfor fixing the cable complete all as specified and as directed. |
| 7 | Supply and fix in repair MCB, TPN of capacity 63 Amps, 415V, \"c\" curve. Braking capacity of15KA,ISI marked complete all as specified and as directed. |
| 8 | Supply and fix in repair MCB, SP of capacity (6-32 Amps), C Series, 240 Volts breaking capacity 10 KA ISI marked complete all as specified and as directed. |
| 9 | Supply and fix in repair MCB, SPof capacity 40 Amps, C Series, 240 Volts as ordered breaking capacity 10 KAISI marked complete all as specified and as directed. |
| 10 | Supply and fix in repair MCB, SP&N of capacity (6-32 Amps), C curve; 240 Volts as ordered breaking capacity 10 KA ISI marked complete all as specified and as directed. |
| 11 | Supply and fix in repair MCB, SP&N of capacity 40 Amps, C curve, 240 Volts as ordered breaking capacity 10 KAISI marked complete all as specified and as directed. |
| 12 | Supply and fix in repair FRP meter box of size 1000mm (L) x 690mm (W) x 175mm (D) approx. or next higher size with locking arrangement and concealed to wall, fixing MCCB DB inside with suitable accessories orfixing the energy meters inside including making good the disturbed surface complete all as specified and directed. Note:- Cost for necessary cutting chases of wall for concealing FRP box and allied civil works deemed to be included in unit quoted rate. |
| 13 | Supply and fix in repair FRPmeter box of size 530mm (L) x 450mm (W) x 200mm (D) approx. or next higher size with locking arrangement and making concealed to wall, fixing MCCB DB inside with suitable accessories or fixing the energy meters inside including making good the disturbed surfacecomplete all as specified and directed. Note:- Cost for necessary cutting chases of wall for concealing FRP box and allied civil works deemed to be included in unit quoted rate. |
| 14 | Supply and fix in repair FRP meter box of size 700mm (L) x 480mm (W) x 210mm (D) approx. or next higher size with locking arrangement and concealed to wall, fixing MCCB DB with enclosure inside with suitable accessories and fixing the energy meters 01/02 Nos inside including making good the disturbed surface complete all as specified and directed. Note: Cost for necessary cutting chases of wall for concealing FRP box and allied civil works deemed to be included in unit quoted rate. |
| 15 | Material and labour for earthing in repairs complete with galvanized earth plate electrode in 60cm x 60cm x 6mm thick buried directly in ground vertically at a depth not less than 2.25 meter belowground level with top edge of earth plate at depth not lessthan 1.5 mtrbelow ground level connecting to and including GI wire 4 mm diaby means of GI bolts, nuts, check nuts and washerlight grade20 mm dia GI protectionpipeandconnected toswitchboard/ test point, GI pipe mediumgrade20 mm dia forwatering an including funnel wire mesh and including common salt of required quantity, charcoal dust, RCCpitcovernot less than 7 kg and PCC 1:2:4type B-1 includingexcavationand earth workin any type of strata disposalof surplussoil al as specified and shown as plateNo 3of SSR part - I2009 complete all as specified and as directed. Note: Above item will be measured and paid after completion of successful testing. |
| 16 | Taking down old/ unserviceable earthing from Panel/ DB, TPN and other equipment complete all as specified and directed. |
| 17 | Supply, installation, commissioning and testing of maintenance free chemical copper bonded steel earth rod of 3 meter length and 14.2mm diameter. Auger ahole of 3 inch diameter and 3 mtr depth in the soil, placing the earth rods in to the augured hole, hammering the rods to 1 feet depth, removing excavated material, filling with Ground Enhancement Material (GEM) of not less than 22 Kgs, conforming to IEC 62561-7 Standard,premixing the GEM into slurry form using water(not more than 10 Ltrs), pouring the GEM mixture in the augured hole and filling, including of PVC heavy duty earth chamber of size 250mm dia , 260mm height with round cover and minimum 5 ton load bearing capacity, marking of earth resistance value on it by painting, complete all as specified and as directed. |
| 18 | (A) Properties of copper bounded steel earth rod:- (aa) The outer surface must be molecularly bonded with uniform layer of 250 micron Copper, 99.9% pure electrolytic coating. (ab) Nickel interface must be provided between the copper and steel to avoid the galvanic corrosion. (ac) Must be capable of withstanding fusing current of 20 KA @ 1 Sec. (ad) Earth rod must be in compliance with IEC 62305- 2, NBC 2010 and IEEE 80. Rod should be tested as per IEC-62561-2 standard. (ae) Tensile strength greater than 80000 PSI on 12 mm. (af) High resistance to corrosion. (ag) Rod shall be tested as per IEC 62561- 2 standard in compliance with IEC 62305 standard. |
| 19 | (B) Properties of GEM: - (Ground Enhancement Matrills) (ba) Must be carbon based superior conductive material. (bb) Resistivity must be less than 2 Ω-cm. (bc) Must not cause corrosion to copper when in contact. (bd) Must not expand or experience any shrinkage once set. (be) Must not depend on the continuous presence of water/ moisture/ salt to maintain its conductivity. (bf) Must not decompose or leach out with time. (bg) Must not contain hazardous chemicals as per IEC 62561-7 standard. (bh) Flexural and possess compressive strength as per relevant standard. (bj) Sulphur content must be less than 2%. (bk) material shall be in line with IEEE 80 clause 14.5.d. (bl) Corrosion test shall be conducted on the material under both aggressive and non-aggressive conditions. |
| 20 | (C) Properties of terminal connection:- Stainless steel terminal connections to equipment body connection from maintenance free earth pit by mechanical connection using nuts, bolts and all other accessories complete all as specified and as directed.(D) Properties Cadweld Materials:- Cadweld materials for connections between ground rod with CBSC conductor by exothermic reaction connections to be made with a semi-permanentgraphite mould, which shall hold the conductors to be welded. Weld metal must be a mixture of copper oxide and aluminium, should be compliant with IEEE 80 standards and tested as per IEEE 837 -2014 standard.(E) Properties of common bus bar:- Size of 250mm x 50mm x 3mm bus bar for earth connection with suitable baseclamps & insulators, providing \"DD\" universal pattern for 8 Nos of holes for connections. |
| 21 | IMPROTANT NOTES :- (i)Any items missed out in the technical specification, but technically required for efficient working of the system is deemed to be included in the unit quote rates. (ii) The contractor/ Firm is required to visit the site prior to quoting of the subject items/ work so as to ascertain the actual ground requirements.Any further query at a later date shall not be entertained & responsibility of the same shall rest on the contractor/ firm. (iii) The cost of making good the disturbed surfaces (Substation yard stones and gravel, walls, pavement etc.) is deemed to be included in the unit quoted rate of relevant items. (iv) On testing if the desired earth resistance is not found more than 01 Ohms earthing is to be redone to the entire satisfaction of Engr-in-Charge at no extra cost to the Dept. After completion of work contractor should submit a detailed report of earth resistance test result. (v) If any damage to any electrical/ communication cables or any pipe lines or any other installations occurs during execution of the work then the same shall be made good by the contractor to the entire satisfaction of the concerned & the cost of the same is deemed to be included in the unit quoted rates. |
| 22 | Supply, laying, installing and commissioning copper bonded steel round conductor of size 10mm, minimum copper bonding shall be 250 microns having continuous coin form, the conductor core consists of a low carbon steel grade for improved flexibility. The copper surface of the conductor should provide high conductivity and corrosion resistance properties, should not crack or tear when conductor is bend well‐suited as a earth lead conductor or equipotential bonding conductor in accordance with the IEC 62305- which shall betted as per IEC 62561 - 2:2012 standard,for laying of conductor in ground/ on wall including connected holder/ clamp including made up of 304 grade SS with SS bolt and nut at every 1 mtr distance of round Rod. The clamp should be suitable copper bonded steel round conductor size of 10-mm complete all as specified and as directed.Note:- Necessary earth work etc. shall be measured & paid separately under relevant items of works. |
| 23 | Supply and fix Surge Protector Transient Discriminating (TD) Technology with Thermal Disconnector fuse of 315 A in build, Operating Voltage 300-305 V, Maximum Surge Rating 50KA @ 8/20 Micro sec. with Status indication flag per mode, audible alarm and voltage-free contacts TDS, 3PH, 50KA/PH, 240V, TT Contacts as per 1449 Edition & IEC 61643 -1 (including interconnection copper conductor & Fixing accessories) in the existing DB/ TPN/ Panel complete all as specified and as directed. |
| 24 | Note:- SURGE PROTECTION SYSTEM: Class –II (Point of Entry Protection Sub Circuit Panel) (a) Enhanced Din Rail Surge Protector Transient Discriminating (TD) Technology. (b) Technology with Thermal Disconnect fuse of 315 A in build. (c) Operating Voltage 300-305 V, Maximum Surge Rating 50KA @ 8/20 Micro sec. (d) Status indication flag per mode, audible alarm and voltage-free contacts. (e) Standard: UL 1449 Edition & IEC 61643 -1. (f) Including Interconnection Conductor with Suitable Sockets Conduit of distance 20 Mtrs. |
| 25 | Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth for taking out/ laying of UG Cables, GI Pipe etc. and getting out in hard dense soil complete all as specified and directed. |
| 26 | Returning, filling in including spreading, levelling, watering and well ramming in layers not exceeding 25cm thick complete all as specified and directed. |
| 27 | Removing of excavated material not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed. |
| 28 | Material and labour for cutting the existing hard standing/ Tails/ PCC/ WBM road at a depth not less than 30cm and 30 cm inwidth for passing of pipeline/ cable through pipe, returning, filling in complete including finishing the top surfaces by providing20cm thickplain cement concretetypeC2 , 1:3: 6 using40mm graded crushed stone aggregate on top and surface shall befinished to a uniform smooth surface, bottom filled with excavated earth complete all as specified and directed. |
| 29 | Supply and laying GI pipe light grade (ISI Marked) of size 25 mm for cable/ rod protection to be fixed on wall /pole/ road crossing with necessary clamps complete all as directed and specified by Engr-in-Charge. |
