SPECIAL REPAIRS OF 03 NOS TRANSFORMER INSTALLED IN BUILDING P196 OF DAG DEPARTMENT AT NAVAL DOCKYARD UNDER GE NW KUNJALI 2ND CALL

Amount

Supply and fixing of outdooor step down tranformer of 630 KVA dual ratio 11000 and 6600/433 volts,50 Hz copper wound with off load tap changer on H.T side of taps +/- 2.5% to +/- 5% variation of voltage at steps all as specified in IS 2026 complete and as directed by Engineer-in-Charge. Make of manufacture :- ITL, Pactil, Voltamp, Crompton Greaves, Bharat Bijili

(a) Winding Material : Copper (b) Type of Cooling : ONAN (c) Class of Insulation : Class “A” (d) Primary Connection [HV] : Delta (e) Primary Volts : 11000 (OR) 6600V (f) Primary Wires : 3 (g) Primary rated current : 33.07 (OR) 55.11 A (h) Secondary Connection [LV] : Star (j) Secondary Volts : 433V (k) Secondary Wires : 4 (l) Secondary rated current : 840.02 A (m) Rating & Terminal Marking Plate -01 (n) Earthing Terminals -02 (o) Lifting Lugs -04 (p) Drain Valve with blanking plate -01 (q) Filter Valve with blanking plate-01 (r) Conservator -01 (s) Conservator Oil filling hole with cap -01 (t) Oil Level indicator with min. marking-01 (u) Dehydrating Breather-01 (v) Conservator Drain Plug -01 (w) Air Release Device -01 (x) Thermometer Pocket -01 (y) Pressure relief valve -01

(z) Roller Bi directional -04 (aa) Radiators (Weldable) -04 (ab) Cable Box HV -01 (ac) Cable Box LV -01 (ad) Separate Neutral Terminal -01 (ae) Off Circuit Tap Changer -01 (af) O.T.I with Alarm & Trip Contacts -01 (ag) Buchholz relay with Alarm & Trip Contacts -01 (ah) Marshalling Box -01 (aj) W.T.I with Alarm & Trip Contacts -01 (ak) W.T.I. Pocket One 25 Current Transformer -01 (al) Transformer oil to be filled up to the normal level as specified by the engineer in charge (am) Platform for mounting the transformer shall be as per manufacturer instructions and shall be deemed to be included in the quoted rates. Note :- Routine tests such as Ratio test, Polarity, Phase angle error measurement, Vector group test, B D V of oil, I R Values, Winding resistance, Open circuit test, Short circuit & Impedance test, Separate source voltage test, Induced over voltage test etc shall be carried out at factory before despatch in presence of Rep detailed by accepting officer necessary arrangements shall be done by the contractor and shall quote his rates accordingly.

Supply and fixing of outdooor step down tranformer of 1000 KVA dual ratio 11000 and 6600/433 volts,50 Hz copper wound with off load tap changer on H.T side of taps +/- 2.5% to +/- 5% variation of voltage at steps all as specified in IS 2026 complete and as directed by Engineer-in-Charge. Make of manufacture :- ITL, Pactil, Voltamp

(a) Winding Material : Copper (b) Type of Cooling : ONAN (c) Class of Insulation : Class “A” (d) Primary Connection [HV] : Delta (e) Primary Volts : 11000 (OR) 6600V (f) Primary Wires : 3 (g) Primary rated current : 33.07 (OR) 55.11 A (h) Secondary Connection [LV] : Star (j) Secondary Volts : 433V (k) Secondary Wires : 4 (l) Secondary rated current : 840.02 A (m) Rating & Terminal Marking Plate -01 (n) Earthing Terminals -02 (o) Lifting Lugs -04 (p) Drain Valve with blanking plate -01 (q) Filter Valve with blanking plate-01 (r) Conservator -01 (s) Conservator Oil filling hole with cap -01 (t) Oil Level indicator with min. marking-01 (u) Dehydrating Breather-01 (v) Conservator Drain Plug -01 (w) Air Release Device -01 (x) Thermometer Pocket -01 (y) Pressure relief valve -01 (z) Roller Bi directional -04 (aa) Radiators (Weldable) -04

(ab) Cable Box HV -01 (ac) Cable Box LV -01 (ad) Separate Neutral Terminal -01 (ae) Off Circuit Tap Changer -01 (af) O.T.I with Alarm & Trip Contacts -01 (ag) Buchholz relay with Alarm & Trip Contacts -01 (ah) Marshalling Box -01 (aj) W.T.I with Alarm & Trip Contacts -01 (ak) W.T.I. Pocket One 25 Current Transformer -01 (al) Transformer oil to be filled up to the normal level as specified by the engineer in charge (am) Platform for mounting the transformer shall be as per manufacturer instructions and shall be deemed to be included in the quoted rates. Note :-Routine tests such as Ratio test, Polarity, Phase angle error measurement, Vector group test, B D V of oil, I R Values, Winding resistance, Open circuit test, Short circuit & Impedance test, Separate source voltage test, Induced over voltage test etc shall be carried out at factory before despatch in presence of Rep detailed by accepting officer. necessary arrangements shall be done by the contractor and shall quote his rates accordingly. Old unserviceable transformer shall be deposited to disel and gas turbine department at Naval Dockyard as directed by Engineer-in-Charge. No transformer shall be given to the contractor under Sch of credit

Supply & fix cable end joining kit HT 11 KV earth (gird cable) or indoor termination heat shrink type joint complete with jointing materal and acessriesses sutaible for 3 core XLPE armoured aluminium conductor cable of size 240 sqmm to 300 sqmm complete all as specified and directed by Engineer-in-Charge. Make :- RAYCHEM / DENSON / MSEAL

Material & labour for earthing complete with galvanised steel earth plate electrode 600x600x6mm thick buried directly in ground (earth pit not less than 2.25 mtr below normal ground level) with top edge of the plate not less than 1.5 mtr below ground level connected to the GI strip 32x6mm dia means of bolts, nuts check nut & washers of galvanised iron Earth wire protectted byprovision of GI light grade pipe 40mm incl provision of concrete pit nin PCC (1:2:4) type B-1 using 20 mm graded stone aggregated with 40mm thick cover with RCC (1:2:4) reinforced with XPM (weight not less than 4 kg/sqm) and frame of angle iron 25mm x 25mm x 3mm with lugs 2 Nos and 6mm dia MS bar handle to shape, GI light grade 20mm bore pipe for watering perforated at bottom 1.75 mtr long placed on top edge of earth plate, common salt and charcoal filling, teste point made out of phosphorus bronze with fixing arrangement, funnel, wire mesh and earth work in hard/dense soil, returing filling in and removal of surplus soil to a distance not exceeding than 50 mtr all as per electric plate No 3 of SSR part 2009 and connection to earth test point all as specified incl testing on completion.

Supply & fix in replacement of earth continuity conductor with adequate size saddle fixed to wall on batten or recess or any other indicated situation for loop earthing etc as required 32mm x 6mm GI strip complete all as specified and directed.

Material & labour for dismantling the existing old BER transformer complete including Electrical HT/LT cable and connected assecessories etc. and handing over to the DAG dept Store yard as directed by Engineer-in-Charge

Supply & fix XLPE insulated screened,PVC bedded, galvanised steel strip or wire armoured electric power cable (heavy duty) with aluminium conductor,11000 volts, grade cross sectional area 3 core 185 sqmm Make KEI industries / Havells / Polycab / Asian all as specified and directed by Engineer-in-Charge

Supply & fix PVC insulated, armoured,heavy duty electric cable with aluminium conductor, 1100 volts grade, cross-sectional area 3.5 core 400 sq. mm Make KEI industries / Havells / Polycab / Asian all as specified and directed by Engineer-in-Charge

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