PROCUREMENT OF 6NOS 220KV OUTDOOR TYPE CURRENT TRANSFORMER AND 3NOS 220KV CAPACITIVE VOLTAGE TRANSFORMER FOR THE JOB OF SHIFTING OF CONTROL AND RELAY PANEL WITH ASSOCIATED SYSTEM FROM RESERVE BUILDING TO UNIT7 ECR,DPPS,DPL

Procurement of 06 Nos. 220 KV Outdoor Type Current Transformer and 03 Nos. 220 KV Capacitive Voltage Transformer

220 KV Outdoor Type Current Transformer 5 Core, Ratio: 1600-1000 / 1-1-1-1-1 A, Technical Particulars: 1st Core: 1600–1000 / 1 A, 20 VA, Class 0.2 S, ISF < 5 Balance Cores: 1600–1000 / 1 A, PS Class KPV: 1000 V, Excitation Current at VK < 50 mA, Secondary Resistance at 75 °C < 8 Ω (at 1000 / 1 tap), Standard: IS: 2705 / IEC: 60044–1 / IEC: 61869, Highest System Voltage: 245 KV, Insulation Level: 460 KV / 1050 KVP, Frequency: 50 Hz, Short Time Current Rating: 40 KA for 3 Seconds, Extended Current: 120 %, Insulator: Porcelain with creepage 25 mm / KV, Terminal Connectors: Both side terminal connector suitable for CT stud to Twin Moose ACSR conductor (Universal Take-Off)

220 KV Outdoor Type Current Transformer: 5 Core, Ratio: 800-400-200 / 1-1-1-1-1 A Technical Particulars: 1st Core: 800-400-200 / 1 A, 20 VA, Class 0.2 S, ISF < 5 Balance Cores: 800-400-200 / 1 A, PS Class KPV: 1200 V (at highest tap), Excitation Current at VK < 60 mA (at lowest tap), Secondary Resistance at 75 °C < 5 Ω (at highest tap) Standard: IS: 2705 / IEC: 60044-1 / IEC: 61869, Highest System Voltage: 245 KV, Insulation Level: 460 KV / 1050 KVP, Frequency: 50 Hz, Short Time Current Rating: 40 KA for 3 Seconds, Extended Current: 120 %, Insulator: Porcelain with creepage 25 mm / KV, Terminal Connectors: Both side terminal connector suitable for CT stud to Twin Moose ACSR conductor (Universal Take-Off)

220 KV Capacitive Voltage Transformer: 8800 PF, 3 Winding, Frequency: 50 Hz, Single Phase, Type: Oil filled, Voltage Ratio: 220000 / √3 / 110 / √3 / 110 / √3 / 110 / √3 Burden / Accuracy Class: 100 VA / 3P, 100 VA / 3P, 50 VA /0.2, Total Simultaneous Burden: 50 VA for 0.2 & 100 VA for 3P accuracy class, Insulator: Porcelain Insulator with creepage 25 mm / KV, Power frequency withstand voltage for 1 minute: 460 KV–RMS, Lightning Impulse withstand voltage for 1.2 /50 s (KV peak): 1050, Short Time Current Rating: 40 KA for 3 seconds, As per-IEC: 60044-5 (Old 60186) / IS: 3156, IEC: 60358 / IS: 9348 / IEC 61869-1, 5