Variable Frequency AC Resonant Withstand Voltage Test Set , Variable Frequency Resonant Control Unit

I. Product Description :

FKVF series variable frequency power source is main measurement and control unit and host machine for Variable Frequency AC Resonant Withstand Voltage Test Set .Which also called variable frequency converter.

The variable frequency power source adopts ARM and FPGA digital signal processor with high-speed, receiving order from remote computer, which realizes high-level control of the whole test procedure. FPGA digital signal processor with high-speed real-time calculates and changes output waveform, real-time test high voltage value and main circuit parameters of converter power, and return test parameters, operating status to upper machine, real-time sample protecting signals, fast close power output and its waveform generator.

II. Appication and usage

• The measurement and control unit for varable Frequency AC resonant withstand voltage test circuit.
• Replace the old traditional console to increase the efficiency of high-voltage test and enhance monitoring and protection during resonant withstand voltage testing.

III. Main Components of the unit:

• FKVF host machine of variable frequency power source
• Optional remote control computer with English testing software
• Optional external sole emergency stop box
• Connection cables group
• Optional External alarm lights

IV. Test priciple (FKVF-300KW for example)

V. Technical Parameters

1.Rated capacity: 5KW, 10KW, 20KW, 30KW, 50KW, 100KW,

150KW, 200KW, 250KW, 300KW,

350KW,400KW,500KW optional

2.Input power: above 20KW Voltage 380V±10% three phase;

below 20KW Voltage 220V±10% single phase;

3.Working input Frequency: 50Hz/60Hz

4.Output voltage: above 20KW: 0-500V (Input 380V) continuous adjustable

below 20KW: 0-250V(input 220V) continuous adjustable

5.Rated output current : decided by model

6.Output waveform: square wave

7.Adjustable range of output frequency: 20-400Hz

8.Output Frequency resolution: 0.03Hz

9.Output Frequency instability: less than 1%

10.Output Frequency step value: 5Hz, 2Hz, 1Hz, 0.1Hz, 0.03Hz

11.Output Voltage resolution: 0.01kV

12.Output Voltage instability: less than 1%

13.Output Voltage step value: U/45000 full range

14.Continuous operating time: 60 min, temperature raise is no more than 45K

15.Working conditions: temperature -10 degrees centigrade to 40 degrees centigrade

16.Altitude: less than＜1000m

17.Weight: less than＜ 20 kg(5~20KW);

less than ＜ 30 kg(30~50KW);

less than ＜ 650 kg(100~400KW);

less than ＜ 650 kg(400~500KW);

VI. Main functions:

• Waveform is square wave regulated by pulse width voltage
• Continuously monitor voltage in operating process, when HV voltage fluctuates, which is caused by fluctuation of power voltage and power frequency, system will fine-adjust voltage to setting voltage automatically.
• Automatically scanning frequency, searching for resonant point. Frequency range is 20-300Hz. You can manually set scanning-frequency range. Maximum time-consumption of scanning is 2 minutes (full frequency scanning). The frequency resolution is 0.03Hz.
• Automatically test. You can set test program, test program can be divided into 5 segments. System will finish test process according to setting program automatically.
• When at automatical test, you can change into manual control status at any time to manually regulate frequency and voltage
• Automatically trace voltage when withstanding. Automatically regulate voltage to object voltage when voltage normally fluctuate, warn when abnormal fluctuation. Users can operate for practical test situation.
• Real-time rendering U-t curve (voltage-time curve) when voltage regulation and withstanding.
• Real-time displaying test status. You can make corresponding operation according to test status
• Strong protection and warning function: over current protection, over voltage protection and flashover protection, high voltage abnormal protection, software/hardware simultaneous protection indication. Make sure the safety and form report file for checking
• Save test data and form test report automatically, you can print test report in time and also you can save the report and print in other places.
• Data-inquiring function. According to your conditions to inquire past test data.