Large capacity variable frequency series resonance test device

Introduction:

With the advancement of technology and the rapid development of the power industry, especially in recent years, the "urban and rural two network transformation", high-voltage cross-linked cables and GIS (composite electrical equipment) have been widely used, and the capacity and length of cables continue to rise. The previous DC withstand voltage test cannot accurately reflect the actual insulation performance of the above equipment, and the ordinary power frequency test equipment used as a test method appears extremely bulky in large capacity situations and is not suitable for on-site use. Therefore, in response to this on-site testing requirement, our company has developed a variable frequency series resonant device that is intelligent, compact, easy to carry, simple to operate, safe and reliable, greatly reducing the physical labor of the testing personnel and improving work efficiency.
The complete set of frequency conversion series resonance test equipment is widely used in industries such as power, metallurgy, petroleum, and chemical. It can not only test various specifications of XLPE and other power cables GIS、 Circuit breakers and bushings are subjected to AC withstand voltage tests, and through certain frequency limitations, the withstand voltage level of electrical equipment such as large generator sets, power transformers, and transformers can also be tested.

Key Features:
Internally controlled by ARM, optimized operational functions, and easy to operate.
Automatic frequency scanning to find resonance points, frequency range of 30-300Hz, can be manually set for frequency scanning range, the most time-consuming time for frequency scanning is 2 minutes (full frequency scanning), frequency resolution is 0.01Hz
Users can set the test program for automatic testing, which is divided into 5 sections. The system automatically completes the test process according to the set program.
The setting values for test voltage, pressurization time, overvoltage and overcurrent protection, voltage divider ratio, excitation transformer ratio, etc. can be set
Can automatically or manually scan the frequency, and can freely set the scanning range
It has protection functions such as overcurrent, overvoltage, power-off, breakdown and flashover

Product Parameters

1Rated test capacity: 0～5000kVA
2Resonant voltage: 0～1000kV
3Frequency adjustment range:20～300Hz
4System measurement accuracy: 1.0level
5Frequency adjustment resolution:0.01Hz
6Instability:≤0.05%
7Output waveform: sine wave
8Waveform distortion rate:≤0.5%
9Noise Voice:≤60dB
10ReactorQValue: 30～90
11Work schedule: Continuous working time at full power output60min

12Environmental temperature: -10℃～45℃
13Working humidity:≤ 90%
14Altitude:≤3000m
15Power input:380V±10%Three phase or220V±10%single-phase(10kWbelow),50Hz