Kehui International

Hertford,  Hertfordshire 
United Kingdom
http://www.kehui.com
  • Booth: 449

Founded in 1991, Kehui provides a selection of cable and transmission line fault locators, also suitable for HVDC and submarine cables. Subsequently, it produced an extensive range of electricity distribution automation equipment including GPS synchronisation, remote terminal units and SCADA systems. Substation digital fault recorders complete the T&D equipment catalog.

Kehui also produces Switched Reluctance Motors in various sizes from 5 – 500kW. These extremely efficient machines avoid some of the disadvantages of VFD and are suitable for a wide range of applications.

Brands: Kehui, cable fault location, low voltage, transmission line fault location, traveling wave, switched reluctance, HVDC, submarine cable fault location, DC system fault location


 Products

  • T-P23 low voltage cable fault locator
    The T-P23 have been designed to locate all types of low voltage cable faults, including intermittent faults. It can be applied to the system without disconnecting consumers...

  • The T-P23 has been designed to locate all types of low voltage cable faults, but especially difficult and troublesome intermittent faults. It is controlled locally or remotely over a GSM phone channel. The unit is connected  to all 3 phases of an LV cable, from which it derives its power. It injects TDR signals on to any combination of phases and measures the response. It includes a three-channel transient recorder used to obtain information about the behaviour of intermittent faults. The signals acquired by the transient recorder are also used to detect “trigger” conditions, based on voltage distortion resulting from the fault. Several cycles of data can then be examined, including the TDR traces from before and during the fault, allowing the distance to the fault to be calculated.  Alternatively, two units can be used in a quasi-traveling wave configuration (designate TRS) which increases the range and gives several operational advantages, including improved accuracy based on the measurements from two devices.

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