HZXB-1000kVA/500kV Variable Frequency Series AC Resonance Test System

Main functions and technical characteristics：

1. The device has protection functions such as overvoltage, overcurrent, zero start, system detuning (flishover). The protection value of overvoltage and overcurrent can be adjusted according to user needs. When the test product is protected and the flashover voltage value can be recorded for test analysis.

2. The single weight of the whole device is very light and easy to use on site.

3. The device has three working modes, which are convenient for users to choose flexibly according to the site situation and improve the test speed. Working mode is: automatic mode, manual mode, automatic tuning manual boost mode.

4. Can store and print data in different places, and the deposited data number is digital, which is convenient to help users to identify and find。

5. The frequency starting point of the device can be set within the specified range, and the direction of the frequency can be selected up and down. At the same time, the LCD screen displays the scanning curve, so as for users to intuitively understand whether to find the resonance point.

6. The adopted DSP platform technology can easily increase or decrease functions and upgrade according to the needs of users, and also make the man-machine switching interface more humanized.

Technical index of HZXB-1000kVA/500kV Variable Frequency Series AC Resonance Test System

1、rated voltage

22kV- - -meets the AC voltage withstand test of 10kV cable; working frequency: 30-300Hz,

Test voltage is 22kV, and the test time is 5min;

52kV- - -meet the AC withstand test of 35kV cable; working frequency: 30-300Hz,

Test voltage is 52kV, and the test time is 60min;

128kV- - -meet the AC withstand test of 110kV cable; working frequency: 30-300Hz,

Test voltage is 128kV, and test time is 60min;

216kV- - -Meet the AC voltage withstand test of 220kV cable; working frequency: 30-300Hz,

Test voltage is 216kV, and test time is 60min;

300kV- - -AC withstand voltage test of 110kV GIS, switch and circuit breaker; working frequency: 30-300Hz, test voltage not exceeding 265kV, the test time is 1min;

500kV- - -the AC voltage withstand test of 220kV GIS, switch and circuit breaker; working frequency: 30-300Hz, the test voltage does not exceed 495kV, and the test time is 1min;

200kV- - -AC withstand test of 110kV / 80000 kVA main transformer; working frequency: 45-65Hz, test voltage not exceeding 160kV, test time 1min;

2. Output voltage waveform distortion rate: <1.0%

3. Allowed continuous working time: 60 minutes of working once under rated conditions;

4. Quality factor of the device: Q 30 (f=45Hz)

5, the device output waveform: sine wave

6, input power supply: three-phase 380V or single-phase 220V

7. Frequency adjustment range: 30Hz~300Hz

8. Accuracy of the system measurement is: 1.5%

9, the device has overvoltage, overcurrent, zero start and other protection functions

（3）The equipment follows standards

《Electrical equipment handover test standard for electrical equipment installation engineering》 GB50150-2016

《High voltage resonance test device》 DL/T 849.6—2004

《 Reactor 》 GB10229.88

《Preventive test procedure for electric power equipment》 DL/T596-1996

《Coupling capacitors and capacitance dividers》 IEC358(1990)

（4）Description of the main configuration and technical parameters of the equipment

1. Frequency conversion power supply

2.Rated power: 37kW;

3.Input voltage: three-phase 380V or single-phase 220V ± 5% 50Hz

4.Output voltage: 0~400V is adjustable

5.Output voltage frequency: 30-300 Hz

6.The 0.1Hz step is adjustable

7.Frequency instability was 0.02%

8.Output current: 0~92.5A

High-voltage electric reactor (ten sets in total)

Rated working voltage: 50kV

Rated working current: 2A

Rated inductance amount: 95H

Continuous working time: 60min

Temperature rise: less than 65k

Operating frequency: 30~300Hz

9.Change the excitation voltage regulator

Rated capacity: 37 kVA

Input voltage: 400V

Output voltage: 4 / 8 / 25kV

Output current: 9.25/4.62/1.48A

10.Capacitance voltage divider (one set)

Self-electric capacity: 300 pF

Rated voltage: 500kV

Self-electric capacity: 300 pF

Rated voltage: 500kV

11.Test line one set