| Place of Origin: | China (Mainland) |
|---|---|
| Brand Name: | SIHU |
| Model Number: | LGB-66W(1,2,3) |
| Usage: | Potential |
| Phase: | Single |
| Coil Structure: | Toroidal |
| Coil Number: | |
| Quality warranty: | 18 months |
| Rated primary current: | 50-2500A |
| Rated output: | 20-40VA(customized) |
| Rated voltage: | 66 kV |
| Rated secondary current: | 5A or 1A |
| Frequency: | 50 or 60Hz |
| Highest voltage for equipment: | 72.5.kV |
Quick Details
Specifications
Product Name: Dry-type High Voltage Current Transformer
The dry-type current transformer, assemblying by a bushing-type primary winding and secondary winding(s).Possessing those advantages of light frame, oil-free, gas-free, porcelain-free, fire-proof and explosion-proof etc,used for current measurement and relay protection in the power system with the rated voltage of 66kV.
2.1 Accuracy classes and their combinations
Steady accuracy classes are 0.2S, 0.2, 0.5S, 0.5, 5P, 10P, PR and PX; transient accuracy classes are TPS, TPX,
TPY and TPZ. There are 1~6 pcs secondary winding(s) in a CT.
2.2 Instrument security factor (FS) of measuring class 5 or 10
2.3 Accuracy limit factor (ALF) of protective class is 5, 10, 15, 20, 30 or 40
2.4 Rated continuous thermal current Icth is 1.2In
2.5 For rated short-time thermal current Ith (r.m.s.) and rated dynamic current Idyn (peak), please see Table 1.
| Primary Current (A) | 50～1600 | 2000~2500 |
| Rated Short-time Thermal Current (r.m.s.) (kA) 3s | 31.5 | 40 |
| Rated Dynamic Current (peak) (kA) | 79 | 100 |
2.12 System earthing conditions.
Non-effectively earthed neutral system
2.13 Arcing distance is ≥720mm
2.14 Creepage distance of outer insulation please see Table 2
| Pollution Level | Class Ⅱ (W1) | Class Ⅲ (W2) | Class Ⅳ (W3) | ||
| Creepage Distance (mm) | ≥1450 | ≥1813 | ≥2248 | ||
Notes: Detailed technical data and outline drawing should be ptovided upon request.