36-765kv Oil-immersed Current Transformers

Oil immersed current transformer (Live tank type, Top head, Top core, Inverted type)36kV…765kV LVB-series 765kV 550kV 525kV 420kV 362kV 300kV 245kV 170kV 145kV 123kV 72.5kV 52kV 36kV Oil immersed current transformer, Oil CTOil-immersed inverted tank current transformers is applied for metering and protect in 36~765kV High-voltage power transmission system.——The features of the equipment omply with IEC 60044-1, IEC61869-2, IEEE/ANSI C57.13, CAS, AS and etc. standards.——Modern and compact design,good insulation performance,high mechanical strength——There are various options on output and accuracy class——The most modern manufacturing technology on oil-paper-insulation manufacture——Strict quality control and routine inspection

Main technical parameters· Highest system voltage: 36~765kV· Rated frequency: 50Hz or 60 Hz· Polarity:Negative· Raetd primary current: 5~5000A· Rated secondary current: 1A or 5A· Accuracy class of the windings for measurement: 0.15,0.2S, 0.2, 0.3,0.5S, 0.5· Accuracy class of the windings for protect: 5P, 10P, 5PR, 10PR, TPY, TPS, TPX, TPZ, PX· No. of the secondary windings: 1~8· Rated output: 5~200VA· Security factor of the instrument (Fs): 5, 10· Accuracy limit coefficient:10,15,20,25,30,35,40, 50· Accuracy limit conditions of the TPY class:a. Symmetrical multiple of the short time current Kssc =20 or 25b. Short circuit time constant of primary windings Tp -100msc. Direct Current Amount of short circuit current 100%(full migration)d. Stipulated operating cycleC-0.1S-O-0.5S-C-0.1S-O or C-0.1S-O-0.4S-C-0.1S-Oe. The guaranteed transient error time during reclosing:40ms or 50msf. Remanence coefficient≤0.1750kV 500kV 400kV 330kV 275kV 230kV 220kV 161kV 150kV 138kV 132kV 115kV 110kV 88kV 69kV 66kV 63kV 46kV 33kV oil immersed current transformer, high voltage Current transformer HV oil CT