Frequency conversion series resonance test device is designed and manufactured for alternating-current withstand voltage test of Possessing a wider application scope, it is the ideal withstand voltage equipment for prefecture-level, municipal-level and county-level high-voltage test departements as well as power installation and repair & testing engineering units. Frequency Conversion Series Resonance Test Device (I) Technical index 1. Rated voltage: 2. Quality factor under full load in test of fire power generator: Q10 (relating to load) 3. Quality factor under full load in cable test: Q 30 (relating to load) 4. Quality factor under full load in test of main transformer: Q 30 (relating to load) 5. GIS, the quality factor under full load in switch test and other tests: Q 50 (relating to load) 6. Input power supply: single phase of 380V 7. Frequency adjustment range: 20Hz 300Hz 8. Accuracy of system measurement: 1.5 9. The unit possesses protective functions, such as over voltage, over current and zero start. (II) Description for main configuration and technical data of equipment: 1. One set of variable-frequency power supply: Rated power: 10kVA; Input voltage: single phrase of 220V or three phase of 380V 10% and 45 65Hz Output voltage: 0 400V adjustable Output voltage frequency: 30 300Hz 0.1Hz adjustable stepping Instability degree of frequency 0.02% Output current: 0 25A 2. High-voltage resonane reactor (4sets in all): 27kV/1A Rated working voltage: 27kV Rated working current: 1A Rated inductance value: 120H Continuous working time: 60min Temperature rise should be less than 60 Working frequency: 30- 300Hz 3. One set of exciting transformer: Rated capacity: 10kVA Input voltage: 400V Output voltage: 1.2kV/3kV/5kV