Withstand voltage testing of power cables and generators is an essential skill for everyone engaged in the power industry. Sometimes, the voltage levels of these devices are not very high. If series resonance is used, it will cause a great waste of resources. Therefore, it is necessary to use an ultra-low frequency high voltage generator for testing.
The ultra-low frequency high voltage generator is a relatively conventional high-voltage power test equipment. Power workers need to use it according to actual conditions in their daily work and set the test parameters properly to achieve test accuracy. So how to set the limit parameters of the ultra-low frequency high voltage generator?
On the parameter limit setting interface, you can set the output frequency, test time, test voltage, overcurrent protection value on the high-voltage side, and overvoltage protection value according to the test needs. The modification method is as follows:
1. Click the "Select" key to cyclically move the special selection box among parameters. The selected parameter can be modified using the "Change" key.
2. Click the "Change" key to cyclically modify the parameter selected by the special selection box in an increasing manner:
There are three frequency options: 0.1, 0.05, 0.02. It specifies the output frequency of the instrument. The unit is Hz.
Timing modification range: 0-99 minutes (it specifies the duration of the test, in minutes).
The test voltage range is from 0 to the rated value, in kV. It specifies the test voltage we need to raise to. When the instrument reaches this set voltage value, it stops raising the voltage and maintains a constant-amplitude sine wave output at this peak value.
The voltage protection value setting range is from 0 to the rated value, in kV. It specifies the upper limit of voltage through the test object. When the voltage exceeds this setting, the instrument automatically cuts off the output and performs a shutdown operation.
The current protection value setting range is from 0 to the rated value, in mA. It specifies the upper limit of current through the test object. When the current exceeds this setting, the instrument automatically cuts off the output and performs a shutdown operation.
The above voltage and current are all peak values. The measurement data displayed by the instrument, as well as the voltage and current values on the printed report, are all peak values.
