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Capacitor Self-Healing Test
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Capacitor Self-Healing Test
This experimental device meets the requirements of standards GB/T 17702-2013 and GB/25121-2010, suitable for self-healing test projects of power electronic capacitors used in rail transit locomotives and vehicles. It uses parallel reactors for precise compensation to reduce total circuit current. The digital display shows test voltage, capacitor current under test, and total circuit current in real time. During the test, the system automatically collects and records the number of self-healing events, and when reaching 5 times or the set voltage value, the test voltage automatically drops to 0.8 times and delays for 10 seconds before automatically stopping.
1. Test AC voltage: 0～1750V Digital display ±2% FS
Maximum self-healing voltage can be set separately: resolution is 1V
Voltage rise speed: about 10～200V/min, accuracy about ±10V
2. Capacitor current: 1～83A Digital display ±1% FS
Inductor current 1～83A Digital display ±1% FS
Total current 0.1～5A Digital display ±2% FS
3. Load: 1 unit
Rated voltage ≤500V, capacitance 1～100uF
4. Number of self-healing times: 1～9999 times can be set
5. Test box: volume about 5 liters, with door-open power-off protection function
6. Inter-electrode withstand voltage mode: automatic voltage rise, timing starts when voltage reaches set value, automatic when time is up
Self-healing test mode: first test inter-electrode withstand voltage, then automatically control voltage rise speed (about 100V/min), when self-healing times or voltage reach set value, automatically reduce voltage to 0.8 times and run for set time (usually set to 10 seconds), then stop
7. Control instrument description: automatically control the rate of voltage rise and fall, automatically record self-healing times, self-healing voltage, and time, automatically determine if the sample fails, data records can be queried and printed
A. PLC + LCD touch screen control design, elegant and easy to operate.
B. Automatically control voltage rise and fall rate, time control, automatic voltage reduction and output cut-off when stopping;
C. Can automatically perform inter-electrode withstand voltage test first, then self-healing test;
D. Automatically collect and record the voltage value when the set number of self-healing times is reached or the set voltage value is reached, test voltage automatically drops to 0.8 times, delays 10 seconds, then automatically stops.
8. Introduction to self-healing times collection method:
A high-frequency pulse detection device is installed in the test box, using pulse method to test the waveform of capacitor self-healing; when one self-healing occurs, the self-healing count automatically increases by one.
9. This equipment can also be used for inter-electrode withstand voltage test of capacitor lead wires.
10. The equipment can automatically compensate according to the input compensation amount, with automatic voltage regulation and timing functions; has overcurrent, overvoltage protection and delay protection; has leakage protection to ensure safe operation of the test.
11. Approximate equipment dimensions: width 1800mm, depth 900mm, height 1600mm, weight about 600kg.
12. Operating environment: 0～40℃, relative humidity ≤90% without condensation, no steam or corrosive gases.
13. Power supply: AC220V, 50/60Hz, 10KVA
14. The main control components of the equipment use imported brands and well-known domestic brands, reliable control, and stable performance.
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Dongguan Zhongjia Testing Equipment Technology Co., Ltd
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86135 8090 9432(Mr. Guo, Manager)
Building 1, Guanghui Zhigu, No. 86, Yinkang Road, Hengli Town, Dongguan City
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