Cable Fault Locator

Because of the extreme complexity of the power cable laying environment, the precise fixed point has always been a critical step in the cable fault test. Even if there is an accurate coarse measurement distance, it is difficult for us to locate quickly and accurately due to the influence of the external environment. Super silent intelligent fixed-point instrument is a portable, super mute, visualization, including path indication of the impact discharge receive precise fixed-point instrument, with high voltage impact generator, using the impact discharge in the cable fault point of the magnetic field signal and sound signal time difference to determine the precise location of the cable fault point, and new technology, the background intelligent sound tracking noise reduction continuous optimization, perfect sound effect, by the headset discharge sound, can be used to assist to determine the position of the cable fault point, error within the diameter of the probe. With the function, it ensures the fast positioning.

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.

The HZ-4000 underground cable fault detector can accurately locate and measure the buried depth of underground pipelines, cables, and optical cables without excavation, and accurately find the location of the damaged point of the outer anti-corrosion layer of the underground pipeline and the fault point of the buried cable.  and is suitable for various underground The detection and inspection of metal pipelines, pipeline management and maintenance, municipal planning and construction, power supply and other departments are the necessary instruments for pipeline maintenance units.

It is applicable to testing all types of faults of power cables with 35kV and lower voltage, test kV cables/wires with above double-core (including coaxial),test open circuit and low resistance faults, calibrating length of cables/wires and transmission speed of electric wave in the cables.

At the Flashover sample test method, HZ-501B cable fault locator, working with HZ-503 cable fault pin-pointer,HZ-504 cable route tracer, HZ-508-35/2 or HZ-506 series High Voltage pulse generator, to complete the measurement of cable fault by "flashover method".