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Cable fault locator UHV-500
transmission line

Cable fault locator - UHV-500 - Wuhan UHV Power Technology Co.,Ltd. - transmission line
Cable fault locator - UHV-500 - Wuhan UHV Power Technology Co.,Ltd. - transmission line
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Go to the Wuhan UHV Power Technology Co.,Ltd. website for more information

Characteristics

Type
for cables, transmission line

Description

Overview
  • UHV-500 cable fault locator is a portable diagnostic instrument for locating and characterizing faults in power and communication cables. It detects low- and high-resistance faults, short/open circuits, leakage and flashover faults, and provides waveform and distance measurements.


Applications and uses
  • Test and locate faults on power cables (1 kV–35 kV), telephone cables, FM communication cables and coaxial cables; detect shorts on metallic overhead lines, grounding faults, high-resistance leakage, high-impedance flash-over, cable disconnection and poor contacts; measure cable length and signal propagation velocity for maintenance and line diagnostics.


Pathfinder (transmitter)
  • Operation mode: intermittent fixed-frequency square-wave output
  • Output power: Pomax ≥ 100 W
  • Output impedance: 1 Ω–∞
  • Output signal frequency: 16 kHz
  • Output signal amplitude: 15 V–340 V
  • Power supply: AC 220 V ±10%


Fault locator
  • Approx. measurement error: < 10%
  • Fixed-point error: < ±10 cm
  • Electromagnetic channel gain: > 110 dB
  • Electromagnetic receiver sensitivity: < 5 μV
  • Sound channel audio amplifier gain: < 120 dB
  • 50 Hz power frequency rejection: > 40 dB
  • Power consumption (receiver): < 120 mA (≈0.7 W)
  • Buried depth detection: ≤ 3 m


Pulse capacitor
  • Fully sealed metal case; compact and lightweight; suitable for inrush current generators, laser equipment, lightning rod test equipment and similar lines.
  • Parameters/standard: GB/T4704-92; ambient temperature -40 °C–55 °C; rated voltage 1 kV–15 kV; nominal capacitance 0.1 μF–8 μF; tolerance ±5%/±10%; loss tangent ≤ 0.01; insulation resistance ≥ 2000 Ω; withstand voltage 1.1UR–1.5UR.


Dry-type AC test transformer (GTB-3kVA/50kV)
  • Compact, low-maintenance design with reliable insulation and built-in over-current protection.
  • Example specification: capacity 3 kVA; high voltage 50 kV; high current 60 mA; low-voltage input 200 V; size 330 × 280 × 510 mm.


Features and highlights
  • Detects faults using low-voltage pulse and high-voltage pulse flash-over methods; can locate flash-over faults without burning through cables.
  • High precision A/D sampling up to 100 MHz, enabling 1 m reading resolution and 1 m blind-zone detection.
  • Large LCD displays waveform and data; dual-trace display and waveform comparison; adjustable transmission speed for different cable types; non-volatile storage retains waveform/data; built-in rechargeable battery for portable field use.


Technical specifications
  • Maximum test distance: 15 km (open wire up to 100 km)
  • Detection blind area: 1 m
  • Data-reading resolution: 1 m
  • Power dissipation: 5 VA
  • Operating temperature: 0 °C–40 °C (limit -10 °C–50 °C)
  • Relative humidity: 20%–90% RH (at 40 °C)
  • Atmospheric pressure: 86–106 kPa
  • Main unit volume: 275 × 220 × 160 mm
  • Main unit weight: 1.8 kg

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Catalogs

Go to the Wuhan UHV Power Technology Co.,Ltd. website for more information

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Cable Tester

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.