By hvhipot 
HV Hipot Electric Co., Ltd. specializes in producing series resonance (also known as cable withstand voltage tester). Next, we will share the series resonance indicators with you.
The frequency modulation series resonance test device is mainly designed and manufactured for the AC withstand voltage test of all electrical main equipment such as 10kV, 35kV, 10kV, 20kV, substations, and lines. The reactor adopts multiple separate designs, which can meet the requirements of high voltage and low current equipment testing conditions, as well as the requirements of low voltage AC withstand voltage testing. It has a wide range of applications and is an ideal withstand voltage equipment for high voltage testing departments and power installation and maintenance engineering units at the prefecture, city, and county levels. Self production offers better prices, with free one-year after-sales warranty and lifetime maintenance. Welcome to place an order.
The device mainly consists of a variable frequency control power supply, excitation transformer, reactor, and capacitive voltage divider.
Technical specifications of frequency modulation series resonance test device
1. Distortion rate of output voltage waveform:<1.0%
2. Allowable continuous working time: work for 15 minutes at a time under rated conditions.
3. Quality factor of the device itself: Q>50
4. Quality factor under full load during cable and generator testing: Q>30 (load dependent)
5. Quality factor of main transformer and line test at full load: Q>30 (load dependent)
6. Input power supply: three-phase 380V or single-phase 20V. When the power supply is 380V, a rated load test can be conducted; When the power supply is 20V, only a 1/2 load test can be conducted.
7. Frequency adjustment range: 20Hz~300Hz
8. System measurement accuracy: 1.5% 9. The device has protection functions such as overvoltage, overcurrent, zero start, and flashover protection