| Coil Number: | Autotransformer |
|---|---|
| Phase: | Single |
| Model Number: | LB-33 |
| Brand Name: | HYEE |
| Place of Origin: | China (Mainland) |
| Name: | 33kv current transformer |
| Standard: | IEC/IEEE/GB |
| Type: | Oil Immersed |
| Internal insulati: | Oil |
| External insulation: | Porcelain |
| Color: | Brown/White |
Quick Details
Specifications
33kv current transformer
 |
Purpose Standards Service condition LB-33GY(W1,W2,W3) less than 3500m |
Technical Data
| Rated voltage | 33/35kV | Rated primary current | Rated short-time thermal current | Rated dynamic current |
| Highest voltage for equipment | 36/40.5kV | |||
| Rated frequency | 50/60Hz | |||
| Rated transformer ratio | 5-2000/5 or 1A | A | KA | KA |
| Number of secondary windings | 1-4 | 5 | 0.5 | 1.28 |
| Accuracy of measuring winding | 0.2. 0.2S. 0.5. 0.5S | 10 | 1.0 | 2.56 |
| Accuracy of protection winding | 5P or 10P | 15 | 1.5 | 3.83 |
| Rated secondary output | 20-50VA | 20 | 2.0 | 5.1 |
| Accuracy limit factor | 0.2. 0.2S. 0.5. 0.5S | 30 | 3.0 | 7.65 |
| Instrument security factors | ≤5 or 10 | 40 | 4.0 | 10.2 |
| Patial discharge, under 1.2Um/√3kV | ≤5pC | 50 | 5.0 | 12.75 |
| Dielectric dissipation factor tgδ, under 10kv-Um/√3kV | ≤0.02 | 75 | 7.5 | 19.13 |
| External insylation creepage distance | W1/810mm W2/1020mm W3/1260mm |
100 150 200 |
10 15 20 |
25.5 38.3 51 |
| Power frequency withstand voltage on primary windings | 95kV rms | 300 | 30 | 76.5 |
| Rated lighting impulse withstand voltage | 185kV peak | 400 | 40 | 102 |
| Power frequency withstand voltage between primary section | 3kV rms | 500 | 40 | 102 |
| Power frequency withstand voltage on secondary winding and secondary windings to earth | 3kV rms | 600 | 40 | 102 |
| Secondary winding inter-turn withstand voltage | 4.5kV peak | 750 | 40 | 102 |
| Mechanical strength (three dire3ction) | 1250N | 800 | 40 | 102 |
| 1000 | 40 | 102 | ||
| 1500 | 40 | 102 | ||
| 2000 | 40 | 102 |
Outline drawing
