Features and Advantages
1. Successfully developed no partial discharge epoxy insulated cylinder, partial discharge value is low
2. Impedance voltage is low, better than the national standard
3. Adopt automatic control technology,high level of automation,strong anti-interference capability
4. Adopt Fast electronic protection device to achieve the high reliability
Parameter
- No Partial discharge transformer
- Capacitor voltage divider
- Protection resistance
- Power filter
| No Partial discharge transformer | Rated capacity | 5-1000kVA |
| Input voltage | AC220V/AC380V | |
| Output voltage | AC 0-1000kV,DC 0-1400kV | |
| Partial discharge | under rated voltage ≤5PC | |
| Impedance voltage | 10 % | |
| Output voltage waveform | power frequency, sine wave | |
| Surface temperature rise | <55℃ | |
| No-load loss | 0.2 % – 0.35 % | |
| Continuous running time allowed | 1 hour/time | |
| Intermittent running time | continuous |
| Capacitor voltage divider (double as coupling capacitor) | Gauge | 10~500KV/500PF, 1000PF |
| Rated frequency | 50HZ | |
| Nominal capacitance | 500pF, 1000pf | |
| Rated voltage | 10~500KV | |
| Nominal partial pressure ratio | 1000:1 | |
| Medium loss | < 0.2% | |
| Local discharge | < 3pC at rated voltage, < 2pC at 80% rated voltage | |
| Measuring accuracy | ≤±1% | |
| Permitted operating time | same as transformer |
| Protection resistance | Rated voltage |
| |
| Rated current | long-term current 0.1~1A | ||
| nominal resistance | 1 ~ 100 k Ω | ||
| Local discharge | < 3pC at 100% rated voltage, < 2pC at 80% rated voltage | ||
| Temperature rise | surface temperature of resistance in continuous operation under 100% rated current is less than 80K | ||
| Operating time | same as transformer |
| Power filter | Power filter | 0.38kv |
| Rated current | 150A | |
| Rated frequency | 50-60hz | |
| Number of routes | 1 | |
| quality factor of filter reactor | > 70 | |
| Background level of partial discharge | < 2pC | |
| Damping resistance power |
| |
| Attenuation characteristics | 40khz-100khz > 40DB | |
| Permissible operating time | the temperature rise of windings of the same transformer meets the national standard | |
| db Insulation level | no abnormal discharge at 5KV/1min |
