Oil filled current transformer, Oil-paper insulated CT, Dead tank type, Hair pin type CT, 12kV--550kV
Product details: 12kV…550kV LB-series current transformer Oil-filled current transformers is applied for metering and protect in 12~550kV High-voltage substation. ——The features of the equipment comply with IEC 60044-1, IEC 61869-2, IEEE/ANSI C57.13, CAS, AS ——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: 12~550kV · Rated frequency: 50Hz or 60 Hz · Polarity：Negative · Rated primary current: 1~3000A · Rated secondary current: 1A or 5A · Accuracy class of the windings for measurement: IEC CL0.15, 0.2S, 0.2, 0.5S, 0.5, 1, ANSI 0.15S, 0.15 · 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, C800 · Security factor of the instrument (Fs):5, 10 · Accuracy limit coefficient：5, 10，15，20，25，30，40 · Accuracy limit conditions of the TPY class: a. Symmetrical multiple of the short time current Kssc=20 or 25 b. Time constant of primary windings Tp: 100ms c. Direct Current Amount of short circuit current 100% (full migration) d. Stipulated operating cycle C-0.1S-O-0.5S-C-0.1S-O or C-0.1S-O-0.4S-C-0.1S-O e. The guaranteed transient error time during reclosing：40ms or 50ms f. Remanence coefficient≤0.1 500kV, 400kV, 330kV, 275kV, 230kV, 220kV, 161kV, 150kV, 138kV, 132kV, 115kV, 110kV, 88kV, 69kV, 66kV, 46kV, 34.5kV, 33kV, 22kV, 13.8kV, 10kV oil filled current transformer, high voltage Current transformer High voltage CT.
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