2. Characteristics of the Series-Parallel Resonance Test Device:

2.1 The series-parallel resonance test device has large output capacity, high output voltage, and can arbitrarily combine reactors for AC withstand voltage tests on different test objects.

2.2 The series-parallel resonance test device is compact in size, light in weight, and especially convenient for field tests.

2.3 The series-parallel resonance test device has good protection functions, including overvoltage protection, overcurrent protection, time protection, flashover protection, overheating protection, module protection, and other functions.

2.4 The series-parallel resonance test device is extremely simple to operate and has both manual and automatic modes.

2.5 The series-parallel resonance test device uses a large screen, making test data clear at a glance, and can print test results.

2.6 The series-parallel resonance test device has no risk of overvoltage after the test object breaks down, causing relatively little damage to the test object.

2.7 The series-parallel resonance test device requires only a small power supply capacity, which is only a fraction of that required for power frequency transformer tests, solving the problem of difficulty in finding a power source on site.

3. Applicable Scope of the Equipment

3.1 Satisfy the AC withstand voltage test for 300mm2/10KV cables with a length of 3 kilometers.

4. Standards Referenced and Implemented in Equipment Manufacturing

DL/T849.6—2004      《High Voltage Resonant Test Device》

GB 6450—1986        《Dry-type Power Transformer》

DL/T848.2—2004      《Test Transformer》 

GB/10229—1988       《Reactor》 

GB/T11920—1989      《General Technical Conditions for Control Devices》

GB/T16927.1—1997    《High Voltage Test Techniques》

IEC358—1990         《Coupling Capacitors and Capacitor Dividers》

GB311.1              《Insulation Coordination for High Voltage Transmission and Transformation Equipment》

DL/T846—2004        《General Technical Conditions for High Voltage Test Equipment》

Q/CSG10007—2004    《Preventive Test Regulations for Power Equipment》

GB7328—87          《Measurement of Sound Level of Transformers and Reactors》

DL474.4—1992      《AC Withstand Voltage Test》