variable frequency series resonant test device with partial discharge
I. Product description
The Partial Discharge High Voltage Variable Frequency Resonance Test System is composed of partial discharge variable frequency power, partial discharge exciting transformer, pd free HV reactor and pd free capacitive voltage divider. The partial discharge level could be controlled within 5pC at rated voltage . The regular ac resonant test set is made up of variable frequency power source, excitation transformer, HV reactor and capacitive voltage divider. The capacitor and reactor of test object formed a serial resonance connection. The voltage divider is in serial connection with the test object and used for measuring the resonance voltage and acting as the overvoltage protection signal. The frequency modulation power output is coupled to series resonance circuit via excitation transformer to provide the exciting power. This high voltage test equipment does not have a problem of large starting current. The power supply with small capacity is capable of fulfilling the test equivalent to 30 to 60 times of the power supply. This greatly solved the problem of poor capacity of test power at site.
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II. Schematic diagram
III. Resonant Test System main specification
1.Rated output voltage: based on different test objects, max up to 1000kV. 2.Output frequency: 20- 300Hz. 3.Waveform: pure sine wave, THD <1.0%. 4.Max. capacity: Max up to 20000kVA 5. Duty Cycle: Continuous working time 60 mins at full power output. 6. Frequency adjustment sensitivity: 0.1Hz, instability <0.05%. 7. Power Supply: 380/220V ± 15%/50Hz ± 5%. 8. Partial discharge level:Less than 5 pC, If the voltage is up to 600kV or Above, less than 10pC.
VI. Application
V. Cases at site
FVI. FAQ 1.Can you provide the training for us? Yes, we can provide free training for our client at our factory. If you require the training on-site, we also can arrange accordingly. We have 10 seasoned engineers who become our technical team, they flied many countries for client's installation and commissioning!
2.What is your after-sale service We have 10 seasoned technical engineer as the after-sale service team.it is lead by our duty manager. We promise that our engineer can give answers within 1 hour and deal with equipment failure within 24 hours in time.
3.What's the warranty period ? Our warranty period is two year . The product can be replaced within 1 month, can be repaired for free charge for one year and maintenance for lifetime. What is more, our warranty can be extended only charged small warranty fee.
Complaint
