The generator combines the advanced technology of modern digital frequency conversion, adopts microcomputer control, the voltage boosting, bucking, measurement and protection are fully automated, and manual intervention can be performed during the automatic boosting process. It is small in size, light in weight, large-screen LCD display, clear and intuitive, and can display output waveforms and printer output test reports. In addition, it has following features:
1) The current, voltage and waveform data are directly obtained by sampling on the high-voltage side, so the data is true and accurate.
2) Overvoltage protection: When the output exceeds the set voltage limit value, the instrument will stop for protection, and the action time is less than 20 milliseconds.
3) Overcurrent protection: designed as high and low voltage dual protection, the high voltage side can perform precise shutdown protection according to the set value; when the current on the low voltage side exceeds the rated current, it will perform shutdown protection, and the action time is less than 20 milliseconds.
4) The high-voltage output protection resistor is designed in the booster body, so there is no need to connect another protection resistor outside.
5) Since the high and low voltage closed-loop negative feedback control circuit is used, the output has no capacity rise effect.
General technical indicators
1. Rated output capacity: 300kVA
2. Rated output voltage: 350kV
3. Rated output current: 0.85A
4. Rated input voltage: 0.38kV
5. Short circuit impedance: <6%
6. Partial discharge level of complete set: ≤5pc under 100% rated voltage, ≤2pc under 80% rated voltage
7. Running time: continuous operation for 60 minutes under 100% rated voltage and 100% rated current; continuous operation under 2/3 rated voltage and rated current
8. The waveform distortion rate of the complete set of equipment: when the input voltage waveform distortion rate of the voltage regulator is less than 3%, the output voltage waveform distortion rate of the complete set of equipment is less than or equal to 3%.
9. Ultra-low frequency series products
ITEM NO. | Rated Voltage | Load capacity | Power fuse | Weight | Function |
WDVLF-30/1.1 | 30KV (PEAK) | 0.1Hz,≤1.1µF | 10A | Controller: 4㎏ Booster: 25㎏ | 10KV cable generator |
0.05Hz,≤2.2µF | |||||
0.02Hz,≤5.5µF | |||||
WDVLF-50/5 | 50KV (PEAK) | 0.1Hz,≤5µF | 55A | Controller:5㎏ Booster:55㎏ | Burn-through for cable faults |
0.05Hz,≤10µF | |||||
0.02Hz,≤25µf | |||||
WDVLF-80/1.1 | 80KV (PEAK) | 0.1Hz,≤1.1µF | 30A | Controller:5㎏ Booster:45㎏ | 35KV cable generator |
0.05Hz,≤2.2µf | |||||
0.02Hz,≤5.5µf |
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