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Variable Frequency Resonant Test System

type:ZCVF-6000kVA/1000kV

ZCVF-A series frequency conversion series resonant AC withstand voltage device is suitable for AC withstand voltage test of transformer, circuit breaker, switch, GIS system, cable, bushing, insulator and other equipment.

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  • Product Introduction

ZCVF-A series frequency conversion series resonant AC withstand voltage device is suitable for AC withstand voltage test of transformer, circuit breaker, switch, GIS system, cable, bushing, insulator and other equipment. It has the functions of high voltage over-voltage protection, low voltage over-current protection, detuning protection, zero position protection, flashover protection, emergency shutdown, under-voltage protection and so on. It not only meets the requirements of equipment test conditions for high voltage and small current, but also meets the requirements of equipment test conditions for low voltage and large current, and has a wide application range.

  • Product Parameters
Composition of complete set of equipments
DK-1500kVA/250kV  High Voltage Reactor        4sets
JLB-240kVA/5/10/40kV/0.35/0.4/0.45kV Excitation Transformer1 set
ZCVF-A-240kW/380V Variable Frequency Power Supply  1set
FRC-1000kV/1000pF Capacitive Voltage Divider         1 set
Main techinical parameters
Total rated capacity6000kVA
Rated frequency30~300Hz
Rated voltage1000kV
Total rated current6A
Inductance value of fixed reactor170H for each
DK-1500kVA/250kV  High Voltage Reactor
Rated capactity1500kVA
Rated voltage250kV
Rated current6A
Rated frequency30~300HZ
Inductance170H±5%
Total weight1500kg
Temperature35℃
Humidity78%RH
JLB-240kVA/5/10/40kV/0.35/0.4/0.45kV Exciting Transformer
Rated capactity240kVA
Rated input voltage350/400/450V
Rated input current685.7/600A/533A 
Rated output voltage5/10/40kV
Rated output current48/24/6A 
Working frequency30~300Hz
Total weight1600kg
ZCVF-A-240kW/380V Variable Frequency Power Supply 
Rated capactity240kVA
Phase numberthree phase
Rated input voltage380V 
Range of output voltage0~400V
Rated input current600A   
Rated output current600A
Input frequency50Hz
Output frequency30~300Hz
Weight240kg
FRC-1000kV/1000pF Capacitive Voltage Divider
Rated voltage1000kV
Electric capacity1000pF
Working frequency30HZ~300HZ
Total weight180kg
Dielectric losstgσ≤0.5%
Voltage division ratio12000:1  (Single section 3000:1;Two series of 6000:1;Three series of 9000:1;Four series of 9000:1  )


  • Product Features

1.Parameter display: Touch or external mouse large screen LCD interface display system

It can display resonance voltage (i.e. the target voltage set before the test), test frequency, measurement frequency, low-voltage voltage, low-voltage current, withstand voltage time, overvoltage protection, overcurrent protection, flashover protection, stage boosting and timing, operation mode switching, capacitance, inductance, frequency exchange calculation, parameter inquiry, etc. It can also display frequency curves, voltage curves, etc., which can intuitively judge the accuracy and stability of the resonance frequency in the current test;

2.Parameter settings: The large touchscreen LCD color screen and external mouse can directly complete various parameter settings. It can set or select parameters such as starting frequency, ending frequency, starting voltage, stage boosting and timing, measuring voltage divider ratio, excitation ratio, overvoltage protection, overcurrent protection, flashover protection, test mode, capacitance and inductance frequency exchange calculation, parameter setting prompts, and help;

3.Experimental mode: Touch screen and external mouse operation, with three operating modes: fully automatic, semi-automatic, and manual. Capable of boosting, tuning (including manual and automatic), segmented boosting and timing, operating status, mode switching, fault prompt, capacitance and inductance frequency exchange calculation functions, etc.

4.Protection function and information prompt: equipped with multiple protection functions such as high voltage overvoltage protection, low voltage overcurrent protection, overcurrent protection, as well as detuning protection, zero position protection, flashover protection, emergency stop, undervoltage protection, etc.

5.Data storage function: saving test results (manually), printing, uploading, reviewing, etc.

Test results: After the manual or automatic test is completed, the detailed parameters of the test can be displayed in the test results interface. When the test is interrupted, the interruption status can be prompted. The parameters can be saved in memory, which is a non-volatile memory that can store 50 test records;

Data query: It can display saved test result data on the screen, and has a USB interface to output and print the data;

6.Automatic voltage stabilization function: The system automatically tracks and maintains a stable test voltage based on the set test voltage or manual boosting results, with a voltage stability of up to 1.0%;

7.The frequency modulation range and frequency resolution can be set: the frequency modulation range can be set to 30-300Hz, 45-100Hz, 200-300Hz, as needed, to accelerate the tuning process; The frequency resolution can be preset to 0.1Hz, 0.2Hz, 0.5Hz, or 1.0Hz as needed, achieving an optimized balance between tuning efficiency and tuning accuracy;

8.Frequency adjustment is divided into coarse and fine adjustments, and can automatically find the test resonance point to ensure that the resonance frequency does not drift throughout the entire test process.


  • Product Video
  • Product Picture

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