| Message: | 110kV 115kV 132kV 138kV SF6 Current Transformer
For CT we have dry, oil, gas, here we mainly introduce our SF6 current transformer, balance types you can check with product list, it will have detailed information for each type and voltage level.
The enclosure, locating at the top, could be divided into "T" shape and "bell-cover" shape. T shaped enclosure is made of anticorrosive aluminum; Bell-cover enclosure is made of casting aluminum. The enclosure is checked by intensity and gas sealing and X ray.
The main body (primary winding and secondary winding) is fixed in the enclosure. SF6 is adopted as the insulating medium between the primary winding and secondary winding in which has the shield tube supported by epoxy resin for the secondary winding. The outgoing line for the secondary winding is lead to the connection box in pedestal through down-lead tube.
The insulating tube, dividing into porcelain tube that is sintered by high-strength porcelain and silicon-rubber tube, and silicon-rubber porcelain which has better performances in resisting pollution, water invasion and electric corrosion comparing with that high-strength porcelain.
The pedestal is designed with connection box,SF6 gas density controller and gas filling valve. The Sf6 gas density controller provideds the functions as temperature compensation, alarm and remote monitor to the gas pressure.
Rated voltage, kV 33 or 35 66 or 69 110 or 115 132 or 138 150 220 or 230
Highest voltage for equipment, kV 33 or 40.5 72.5 123 or 126 145 170 245 or 252
Rated frequency, Hz 50; 60
Rated power frequency withstand voltage, kV 95 160 230 275 325 460
Rated lightning impulse voltage, kV 200 350 550 650 750 1050
Flashover distance, mm 385 700 1100 1300 1500 2100
Cree. distance, mm
W1 W2 W3 810
1020
1260 1450
1820
2250 2520
3150
3910 2900
3630
4500 34000
4250
5270 5040
6300
7820
Mechanical load, N 3000 3000 3000 3000 3000 4000
Rated primary current, A 5~5000
Rated secondary ......url:http://www.hyee-current-transformer.com |
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