Name of Work:- Residual life assessment test of different transformers under O&M Division, PTCUL, Almora.
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Item Description
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The following tests are to be carried out for \\"Work of residual Life assessment Test of transformers\\":-(a) Capacitance & TanDelta of Bushings & Windings. (b) Turns ratio test.(c) Vector grup test.(d) Short circuit impedance test.(e) Magnetizing current test.(f) Magnetic balance test.(g) Winding resistance test.(h) Insulation Resistance measurement.(i) Sweep Frequency Response Analysis (SFRA).(j) Frequency Response on Stray Load (FRSL).(k) Leakage reactance & Impedance Measurement.(l) Online partial discharge measurement test.(m) Thermographic Measurement.(n) Noise measurement test.(o) Vibration measurement test.3X5MVA, 132/33KV T/F Bank-I (GEC make) & 3X5MVA, 132/33KV T/F Bank-II (Bharat Bijlee Make ) at 132/33KV S/s, Ranikhet - 06 Nos.20MVA, 132/33KV T/F-II (Alstom make) & 20MVA, 132/33KV T/F-III (Crompton Greaves make) at 132/33KV S/s, Almora - 02 Nos.3x5MVA, 132/33KV T/F Bank- I (GEC make) & 3X5MVA, 132/33KV T/F Bank-II (Kanhor make) 20MVA, 132/33KV T/F (NGEF make) at 132/33KV S/s, Pithoragarh - 07 Nos.
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Work of opening and re-jumpering of both HV & LV side jumpers including opening & reconnection of earthing of both HV & LV sides.132/33KV S/s, Ranikhet - 24 Nos.132/33KV S/s, Almora - 12 Nos.132/33KV S/s, Pithoragarh - 30 Nos.
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The following Oil Testing of Transformers.DGA of Transformer Oil (a) Methane (CH4).(b) Ethylene (C2H4).(c) Ethane (C2H6).(d) Acetylene (C2H2).(e) Hydrogen (H2).(f) Carbon Monoxide (CO).(g) Carbon Dioxide (CO2).The work Should be carried out as per procedure of relevant IS/IEC standard. The collection of transformer oil sample at site including all T&P for sample collection shall be in the scope of contractor. The testing shall be carried with NABL or CPRI approved lab/ equipment.Note:- 02 Nos. Sample shall be collected for each Transformers and 01 No. Sample from bottom & second from Top.132/33KV S/s, Ranikhet - 12 Nos.132/33KV S/s, Almora - 04 Nos.132/33KV S/s, Pithoragarh - 14 Nos.
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