AC-DC high-voltage test transformer In the process of boosting or withstanding voltage test, if the following abnormal conditions are found, it should be immediately stepped down to cut off the power supply. Stop the test and find out the reasons: 1 The pointer of the voltmeter swings a lot; 2 The scorch or smoke is found in the insulation; 3 There is an abnormal sound in the sample.
AC and DC high voltage test transformer operation method:
1, connected to the operation box (Taiwan) power indicator light.
2. Press the start button, and the running indicator light is on (otherwise, that is, the pressure regulator is not in the zero position, please turn the pressure regulator hand wheel counterclockwise to zero), indicating that the test operation can be performed.
3. Turn the pressure regulator hand wheel clockwise to make the adjustment speed better than 2KV/S. Watch the high voltage meter rise to the required voltage value. If the sample is tested during the boosting process, it will cause a breakdown short circuit and overcurrent. Overcurrent relay action, automatically cut off the power.
4. If the test requires over-current control, prior to operation, the over-current relay shall be adjusted to the current value of the power supply required for the test. During operation, the current relay will be over-current protected according to the test requirements.
5, while monitoring the high-voltage meter, can be used in the instrument side plus 0.5 voltage meter monitoring.
(6) The insulation resistance shall be measured before and after the pressure test to check the insulation.
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