Cable fault locator HZ-E-I

HZ-E-I high-voltage bridge locator is based on the MURRAY bridge principle. It is used for positioning a variety of wire and cable breakdown point or no breakdown but low insulation resistance value defect point, and high-voltage cable protection sheath faults. It can also be used for cable factory to test cable defects. The device using SMPS to form high-voltage constant current source, no-load voltage is -15000V, short-circuit current is 30mA. Using a high sensitivity amplifier and galvanometer to indicate the balance, with the proportional potentiometer to form a balanced bridge and placed at high potential. Test line is the specially designed dual-core high-pressure rubber cable, use four-terminal resistance measurement to avoid the error arising from lead resistance, the test line is reliable grounding through braid shield, the panel operation button at the earth potential, operate the bridge through insulation bar. High voltage constant current sources and bridges are integrated in a portable industrial chassis. Therefore, the device voltage is high, light in weight, easy to operate and safe to use. Safety instructions for use 1. Read the instructions carefully before use and operate in strict accordance with the instructions. 2. This equipment produces 15000V high voltage, improper use may endanger personal safety. 3. At least two people operate, one for wiring and another for checking. Make sure it is safe before use. 4. The grounding end of the instrument is the safe grounding point of the shell, the grounding must be reliable, use special grounding wire connecting to test ground grounding column, electrical cabinet grounding row or mechanical equipment feet.