Scope of application of high voltage bridge fault tester

2022/06/17

Author: Noyafa–Cable Length Tester

Bridge fault tester manufacturer High voltage bridge fault tester Scope of application Bridge fault tester manufacturer 1. The high-resistance breakdown point of the cable after laying, especially the linear high-resistance breakdown point that is difficult to burn into low-resistance, such as the linear high-resistance breakdown of the intermediate joint of the cable (this is mainly caused by the poor manufacturing process of the cable joint. When high voltage is applied Only leak creeping arc without breakdown discharge). ,2. The high-voltage bridge balance method has no test dead zone and is used to determine the breakdown point of short cables and cable ends.

3. The high-voltage bridge method only requires the uniformity of the cable phase line resistance to be measured. And cables with poor traveling wave transmission characteristics, such as PVC low-voltage cables with large dielectric loss; ◎The equipment adopts high-frequency high-voltage switching power supply to form a high-voltage constant current source, with high voltage, stable current, small size and light weight. ◎Using a high-sensitivity amplifier and a galvanometer to indicate balance, and forming a balance bridge with a proportional potentiometer, the whole is placed at a high potential.

The operating button on the panel is at low potential, and the bridge is operated through the insulating rod. ◎Specially designed double-core high-voltage rubber measuring cable, the copper mesh braided shielding layer is reliably grounded, and it is safe to use. The four-terminal resistance measurement method avoids errors introduced by lead resistance.

◎The high voltage constant current source and bridge are integrated in a portable aluminum alloy box. The equipment has high voltage, light weight and easy operation. ◎Compared with the wave reflection method, the bridge balance method has no blind area, and is especially suitable for judging the breakdown point of short cables and near the end, and the operation is easy.

High voltage bridge fault tester scope of application Bridge fault tester manufacturer Shenzhen Noyafa Electronic Technology Co., Ltd.

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