Low Price Adjustable Resonant Frequency Device
Withstand Voltage AC Resonant Test System
Frequency conversion series resonance test device is the use of series resonance principle, the use of excitation transformer to excite the series resonant circuit, adjust the output frequency of the frequency conversion controller, so that the circuit inductance L and test article C series resonance, the resonant voltage is added to the test article voltage. The device is mainly composed of frequency controller, excitation transformer, high voltage reactor, high voltage divider, etc. Inverter controller is divided into two categories, 20KW and above for the control table, 20KW below for the portable box type.
Variable frequency series resonance test device is suitable for 10KV, 35KV, 110KV, 220KV, 500KV polyhexene power cable AC withstand voltage test; for 60KV, 220KV, 500KV GIS AC withstand voltage test; for large transformers, generator sets frequency withstand voltage test, power transformer induction withstand voltage test.
Features
1>Embedded touch screen control, easy to operate.
2>Automatic frequency sweeping to find resonance point. Frequency range 20-300Hz, can be manually set to sweep the frequency range, sweeping the maximum time consuming 3 minutes (full frequency sweep). Frequency resolution 0.1Hz.
3>Automatic test, automatically track the resonance state of the system, to ensure that the system works in the optimal output state during the whole process.
4>Automatic tracking voltage when withstanding voltage; full voltage output protection: during voltage regulation, strictly ensure that the inverter power supply will not output full voltage.
5>Automatically save the test data, and query the previous test data according to the query conditions.
6> LCD display can show the power supply voltage and current; frequency, voltage and current of high voltage output.
7>Protection function: with power failure, overcurrent, overvoltage and flashover protection function;
8> inverter power supply internal structure and its components after normal road and rail transport, mutual position unchanged, not damaged, fasteners do not loosen.
Configuration
| For substation equipment |
For cables |
For generators |
| variable frequency source |
variable frequency source |
fixed reactor |
| exciting transformer |
exciting transformer |
adjustable reactor |
| reactors |
reactors |
capacitive divider |
| capacitive divider |
capacitive divider |
|
| power supply |
380V±10% three-phase 50HZ |
| rated output voltage |
0-1000KV |
| maximum output capacity |
6400KVA |
| working frequency range |
30-300HZ |
| quality factor |
30-80 |
| frequency adjustment resolution |
0.1HZ |
| output waveform |
sine wave, waveform distortion rate <1% |
| ambient temperature |
-15 ºC - 50 ºC humidity: ≤ 90% RH |
| Full power output, continuous working time of 60min |
| system with over-voltage, over-current, discharge and other fully automatic protection functions |
| Applicable scope: cable frequency resonance device, generator AC withstand voltage device, substation electrical equipment AC withstand voltage resonance device, CVT test with resonant boost device |
| Note: Frequency series resonance system configuration can be customized according to the test object and user use. |
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