Catalogues: (Download )
Current Transformer, dead tank type 36~550kV .pdf 1.46M
Current transformer, Oil filled, (Dead tank/ upright/ Surpport/ Hair pin type CT)
36kV…550kV LB-series
550kV 525kV 362kV 300kV 245kV 170kV 145kV 123kV 72.5kV 52kV 36kV oil immersed current transformer, oil papaer insulated CT
Oil-filled current transformers is applied for metering and protect in 36~550kV High-voltage power transmission system.
——The features of the equipment comply withIEC 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: 36~550kV
· 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: CL0.15, 0.2S, 0.2, 0.5S, 0.5, 1
· 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: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 33kV High voltage oil immersed current transformer, high voltage Current transformer HV oil CT