The series resonance under Wuhan UHV can help many power workers conduct various power tests more conveniently.

The advantages of DC withstand voltage test are mainly reflected in the following aspects:

Effectively detect insulation defects:

The DC withstand voltage test can effectively detect overall defects such as insulation moisture and dirt.

Under direct current voltage, the insulation resistance is used to divide the voltage, which can more effectively detect end insulation defects than alternating current.

By analyzing the relationship curve between current and leakage current, local defects in insulation can be further discovered.

Less destructive to insulation:

Under direct current voltage, there is basically no dielectric loss in insulation, so the destructive effect of direct current withstand voltage on insulation is relatively small.

Small capacity of experimental equipment:

DC withstand voltage only requires a small leakage current supply, so the required testing equipment has a small capacity and is easy to carry.

Stable performance of DC high-voltage generator:

DC high-voltage generators have the advantages of low ripple coefficient, stable and reliable voltage output, no noise, and good reliability.

The equipment has overvoltage, overcurrent, zero voltage starting and fault protection functions, and the voltage protection value can be set and displayed intuitively.

Voltage and current are displayed digitally for easy monitoring of output status.

Easy to test:

It has a 0.75 times voltage conversion function, which is convenient for testing equipment such as zinc oxide lightning arresters.

The product has a compact structure and small volume, making it more suitable for on-site testing.

No capacity rise effect:

In certain types of tests, such as variable frequency series resonant withstand voltage tests, the DC voltage does not produce capacitance rise effects, ensuring the accuracy of the test results.

In summary, DC withstand voltage testing has multiple advantages, including effective detection of insulation defects, minimal damage to insulation, small capacity of testing equipment, stable performance of DC high-voltage generators, ease of testing, and no capacity rise effect. These advantages have made the DC withstand voltage test widely used in insulation performance testing of power systems and electrical equipment.