405KVA/200KV Series Resonance
Darui Electric recommends
Specific configuration of the equipment:
Test requirements:
1. AC withstand voltage test for 300mm2/10kv cable with a length of 1 kilometer. Test time 5min, test voltage 22kv, test frequency 30～300Hz, equivalent capacitance is 0.418uF/km.
Design of the reactor:
1. AC withstand voltage test for 300mm2/10kv cable with a length of 1 kilometer, test time 5min, test voltage 22kv, test frequency 30～300Hz, equivalent capacitance is 1.254uF. When the frequency is 35Hz.
Test current I=ωCXU test =2×3.14×35×1.254×22×10-3=6A
Corresponding reactor inductance L=1/ω2C =16.5H
Environmental conditions for use:
1. Ambient air temperature:
Temperature: +45℃ Minimum temperature: -10℃;
Maximum daily temperature difference: 35k Sunshine intensity: 0.1w/cm2
2. Altitude: ≤2000m ;
3. Relative humidity: ≤90 %
4. The installation site should be flat, and the inclination of the reactor installation should not be less than 50 ;
5. There should be no gas vapor, chemical deposition dust, dirt, or other explosive media that seriously affect equipment insulation around.
Product Introduction
405KVA/200KV series resonance test complete set of devices, various large power transformers, power cables, steam and hydro generators and other capacitive equipment AC withstand voltage tests must be strictly carried out regularly according to test procedures.
Under power frequency conditions, due to the large capacitance of the test object, or the high test voltage requirements, the power supply capacity of the test device also has correspondingly higher requirements. Traditional power frequency withstand voltage devices often have large single-piece volume, heavy weight,
not easy to carry on site, and not easy to combine arbitrarily, with poor flexibility. A better method is to use the series resonance method for withstand voltage test.
Product features:
1. 405KVA/200KV series resonance test complete set of devices, with large output capacity, high output voltage, and can arbitrarily combine reactors for AC withstand voltage tests of different test objects.
2. It has small size, light weight, especially convenient for field tests.
3. It has good protection functions, including overvoltage protection, overcurrent protection, time protection, flashover protection, overheating protection, module protection and other functions.
4. It is extremely simple to operate, and has both manual and automatic gears.
5. Adopting a large screen, making test data clear at a glance, and can print test results.
6. It has no risk of overvoltage after the test object breaks down, and the damage to the test object is quite small.
7. The power supply capacity required for the test is small, only a fraction of that required for power frequency transformer tests, solving the problem of difficulty in finding power sources on site.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
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