Power Frequency Spark Test Machine Wire And Cable Testing Equipment

I-suntop wire and cable Testing machine20220301.pd...

1.Description of Power Frequency Spark Test Machine Wire And Cable Testing Equipment

The power frequency spark tester is actually a kind of cable or wire weak point detection instrument. It periodically loads the set voltage value on the insulated wire according to a certain rule, and the conductor part is grounded, thus forming a voltage difference between the conductor and the insulating surface. Therefore, it is possible to detect whether the insulating layer is defective. The tested cable passes through the high voltage pole of the bead chain, and the test voltage is generated by the power frequency high voltage transformer. When there is a defect in the cable insulation, a breakdown occurs, that is, a high-voltage sparkover short circuit occurs in the output of the high-voltage transformer. The short-circuit current forms a loop from the output end of the high-voltage transformer via the electrode-insulation defect, the cable core, and the earth-high-voltage transformer. Therefore, both the spark tester and the wire core must be well grounded, otherwise the short-circuit current will not be able to form a loop, and may result in a dangerously high voltage on the spark tester housing or the cable core.

2.Features for Power Frequency Spark Test Machine Wire And Cable Testing Equipment

• This series of products are beautiful in appearance, easy to use, compact in structure, strong in mechanical load, and equipped with mechanical grounding and safety protection springs.

• The key part of the high-pressure chain is made of stainless steel, full copper beads, more durable and anti-corrosion

• Excellent breakdown performance, no error in breakdown times, high sensitivity, strong anti-interference, obvious breakdown point, automatic counting and alarm when breakdown

• The high-voltage transformer adopts epoxy resin footnote, which has the characteristics of moisture-proof, anti-interference, etc. It can carry water detection and has a self-checking device.

• Sound and light alarm function, can set remote online control, stop the test after the breakdown and alarm, connect 3s breakdown, stop the test and alarm

3.Technical of Power Frequency Spark Test Machine Wire And Cable Testing Equipment