The LVB-110 current transformer is an inverted transformer. Five secondary windings are combined into a suspended ring and fixed in the oil tank on the upper part of the porcelain bushing; The secondary lead passes through the porcelain sleeve and is led out from the secondary wiring board on the base; The main insulation adopts a capacitive oil paper insulation structure. A winding is composed of a copper rod and a concentric circular tube, which are connected in series or parallel outside the oil tank. The upper part of the oil tank is equipped with a metal expander, and the side is equipped with a pressure release device for 0.35 ± 0.02Mpa blasting. There is an oil drain valve installed on the base for taking oil samples.
Main technical parameters of LVB-110 high-voltage current transformer:
| Rated voltage (KV) |
one hundred and ten |
| Polarity, rated frequency (Hz) |
Reduce, 50 |
| Rated primary current (A) |
2 × 600/5 (secondary winding tap is 2 × 300/5) |
| Rated secondary current (A) |
five |
| Accuracy level and combination |
0.2/0.5/5P2/5P1/5P2 |
| Rated load (VA) |
50 (tap is 30) |
| Rated insulation level (KV) |
126/185/450 |
| Partial discharge level (PC) |
≤5PC |
| Instrument security factor |
FS≤5 |
| Accurate limit coefficient |
5P1:ALF≥20; 5P2:ALF≥15 |


LVB-110 High Voltage Current Transformer