PROVN OF S BY VOLTAGE STABILIZER AT AF STN VADSAR

Supply and install , testing and commission of outdoor type HT Auto Voltage Stabilizer (HT-HT Transformer) with AVR (automatic voltage regulator relay), RTCC (remote tap cubical changer), OLTC (on load tap changer) To Stabilize HT Voltage of input voltage variation between 9.9 KV to 12.1 KV and output voltage 11 KV in step of 1.25% capacity 1250 KVA , 3 Phase , 50 HZ , 3 wire minimum losses as per IS 2026 (Part-1)-2011 with mode of operation automatic /manual/hand control suitable for all power factors, suitable continuous duty cycle round the clock at full load , efficiency more than 98% , ONAN type oil immersed double copper wound, complete with first filling of IS: 335 ISI marked filtered & dehydrated transformer oil, suitable operation temperature 0 to 45 degree centigrade ambient temperature , Imported high grade graphite rollers and used laminations of low losses CRGO Laminations M4 grade , OEM general arrangements , terminal arrangements and other standard fittings / accessories with vector group dyn-11.Civil and foundation work, control and monitoring features complete as specified by OEM and directed by Engr-in-charge.

Supply, laying & testing XLPE insulated, screened ,PVC braided galvanized steel strip or wire armoured electric power cables (heavy duty) 11000 volts grade with stranded aluminium conductor for cross sectional area and size of size 95 sq mm 3.0 core complete all as specified and as directed by Engr-in Charge.

M & L for Earthing complete with galvanised steel earth plate electrode 60 cm x 60 cm x 6 mm thick burried in ground (earth pit not less than 2.25 Mtr deep below normal ground level with top edge of the plate not less than 1.5 Mtrs below normal ground level, connecting to the Galvanised iron earth lead 32 x 6 mm size by means of bolts, nuts check nuts and washers of galvanised iron and 32 x 6 mm earth lead protection by provision of GI medium grade pipe 40 mm bore including provision of concrete pit in PCC (1:2:4) type B1 using 20mm graded stone aggregate with 40mm thick cover of RCC (1:2:4) reinforced with XPM (wieght not less than 4Kg/Sqm) and frame of angle iron 25mm x 25mm x 6mm with lugs 02 Nos and with 6 mm dia MS bar handle made to shape, GI medium grade 20mm bore pipe for watering perforated at the bottom 1.75 meter long placed on top edge of earth plate common salt and charcoal filling test point made out of 40mm x 8 mm FI with fixing arrangements, funnel, wire mesh and earth work in hard dense soil, returning filling in and removal of surplus soil to a distance not exceeding 50 Mtrs all as per electrical Plate No.3 of SSR1991 Part I and connecting to earth test point all as specified or indicated including testing on completion Note :- Item of earthing includes the cost of 7.5 Mtr long galvanised iron 32 x 6 mm GI earth strip and protection pipe of 40mm dia GI medium grade.

Material and labour for cable jointing kit for 11 KV (Earthed) 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 95 sqmm complete all as specified and directed by Engr-in Charge.

Material and labour for cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete all as specified and directed by Engr-in Charge.

Material and labour for cable jointing kit for 11 KV (Earthed) grade cable for out door termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete all as specified and directed by Engr-in Charge.

M & L for Excavating in trenches, n exc 1.5 m wide and n exc 1.5 m in depth; for laying of electric cables for fixing on poles and stay or laying in pipes (where provided protection of cables) and getting out trimming the sides forming bottom surface to required level in soft/loose soil complete all as specified and directed.

M & L for Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm. in soft/loose soil complete all as specified and directed.