High Voltage Cable High Resistance Fault Location Bridge

Huazheng Electric Manufacturing (Baoding) Co., Ltd. is one of the leading manufacturers and suppliers of high voltage cable high resistance fault location bridge in China. Please feel free to buy high quality equipment for sale here from our factory. Good service and reasonable price are available.

HZ-MB10 High Voltage Cable High Resistance Fault Location Bridge

Introduction

The high-voltage bridge is an advanced fault location instrument that integrates two powerful technologies: burn-through and intelligent bridge. The burn-through function delivers a maximum output voltage of 60 kV with a short-circuit current of approximately 600 mA, rapidly converting high-resistance faults into low-resistance faults for easier detection. The intelligent bridge provides a maximum current of approximately 600 mA, significantly enhancing fault location accuracy.

This combination makes the instrument particularly well-suited for pre-locating insulation faults in complex cable systems characterized by high voltage, large cross-sections, and long lines. With the exception of certain open-circuit faults, the high-voltage bridge can be used to locate faults in the main insulation of virtually all cables.

Technical Features

High-Voltage Constant Current Source – The equipment employs a switching power supply to generate a high-voltage constant current source, ensuring both high voltage output and stable current delivery.

Safe Bridge Operation Design – The bridge detection module and large-screen LCD display are set to a high potential, while the control buttons on the panel remain at ground potential. The bridge is operated via an insulating rod, ensuring operator safety.

Specialized Measurement Cable – A specially designed four-core shielded high-voltage measurement cable is used, featuring a copper mesh braided shield that is reliably grounded for safe operation. The four-terminal resistance measurement method eliminates errors caused by lead resistance.

Portable and Integrated – The high-voltage constant current source and bridge circuit are housed together in a portable, trolley-mounted plastic enclosure. The device combines high voltage capability with light weight and ease of operation.

No Blind Zone – Unlike the wave reflection method, the bridge method has no blind zone, making it particularly effective for determining the breakdown point of short cables and faults located near the cable end.

Complex Cable System Capability – The high voltage and high current characteristics make this instrument especially suitable for pre-locating insulation faults in complex high-voltage cable systems with large cross-sections and long lines. For instance, it can quickly locate insulation faults in complex high-voltage cables with GIS terminals and cross-interconnections-without removing the GIS switch or requiring direct cross-interconnection at the beginning and end.

Technical parameters

Supply list

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