High Voltage Bridge Cable Fault Locator
Murray bridge fault locator with a built-in 15 kV constant-current source, for cable sheath faults, high-resistance breakdowns and low-insulation defects.
MODEL HUAC-803
Portable Cable Fault Locator (TDR and Pulse Current)
Portable cable fault distance tester: low-voltage pulse (TDR) up to 8 km and pulse current method up to 128 km, 200 MHz sampling, sunlight-readable screen.
- Low-voltage pulse (TDR) and pulse current methods
- Finds open circuits, low-resistance, high-resistance and flashover faults
- Range up to 8 km (TDR) and 128 km (pulse current)
- Better than ±1 m below 1 km; error < 0.5 % above 1 km; 2 m blind zone
- 200 MHz sampling; pulse width 10 ns – 10 µs
- 7-inch sunlight-readable TFT display, 750 cd/m², 160° viewing angle
- Automatic and manual test modes; rotary encoder for cursor control
- Waveform storage and USB transfer to PC
- 7.4 V lithium-ion battery with adjustable backlight and auto shutdown
- English user interface; English operating system available
Overview
The HUAC-803 measures the distance to faults in power cables, so repair crews know where to look before they dig. It finds open circuits, low-resistance faults, high-resistance faults and flashover faults in cables at substations, power plants and industrial sites, and helps utilities and electrical contractors restore supply faster and keep excavation to a minimum.
Two measuring methods
- Low-voltage pulse (TDR): the instrument sends a pulse down the cable and measures the time until the reflection from the fault returns. It is used for open circuits and low-resistance faults, over cable lengths up to 8 km.
- Pulse current method: for high-resistance and flashover faults, which do not reflect a low-voltage pulse, a high-voltage surge generator breaks the fault down and the instrument records the current transient travelling between the fault and the test end. Range up to 128 km.
Sampling at 200 MHz and pulse widths adjustable from 10 ns to 10 µs give a resolution of better than ±1 m on cables under 1 km, and an error below 0.5 % on longer cables, with a blind zone of only 2 m. Automatic mode finds the fault quickly; manual mode lets experienced engineers adjust the parameters and cursors with the rotary encoder.
The 7-inch TFT display, at 750 cd/m² with a 160° viewing angle, stays readable in direct sunlight. Waveforms are stored in the instrument and can be copied to a PC over USB for analysis and reports. A 7.4 V lithium-ion battery, adjustable backlight and automatic shutdown give a long working time in the field, and the instrument comes in a rugged carrying case.
For prelocation and pinpointing of high-resistance faults with a complete system, see the HUAC-2163 multi-pulse cable fault location system; for sheath faults, the high voltage bridge cable fault locator.
Technical specifications
| Measurement | |
|---|---|
| Methods | Low-voltage pulse (TDR), pulse current |
| Range, low-voltage pulse | up to 8 km |
| Range, pulse current | up to 128 km |
| Accuracy | < ±1 m below 1 km; < 0.5 % above 1 km |
| Blind zone | 2 m |
| Sampling rate | 200 MHz |
| Pulse width | 10 ns – 10 µs, adjustable |
| Display | |
| Screen | 7-inch TFT LCD, 750 cd/m², 160° viewing angle |
| Data | |
| Interface | USB (data transfer and storage) |
| Power | |
| Battery | Lithium-ion, 7.4 V nominal |
| Charger input | 220 V AC, 50 Hz |
| Charging current | 1 A |
| Charging time | approx. 6 h |
| Environment | |
| Operating temperature | -10 – +40 °C |
| General | |
| Interface language | English |
Specifications may change without notice. Contact us for the latest datasheet.
Applications
Power cables in substations and power plantsDistribution networksIndustrial cable networksFault repair and maintenance crews
Downloads
The datasheet and user manual for this instrument are sent on request, usually within one business day.
Frequently asked questions
Which method should I use?
Use the low-voltage pulse (TDR) method for open circuits and low-resistance faults. High-resistance and flashover faults do not reflect a low-voltage pulse, so use the pulse current method together with a high-voltage surge generator that breaks the fault down.
How accurate is the distance?
Better than ±1 m on cables under 1 km, and an error below 0.5 % on longer cables. The blind zone near the instrument is 2 m.
Does it pinpoint the exact spot to dig?
The HUAC-803 measures the distance along the cable. To find the exact spot on the ground, follow up with an acoustic pinpointer, such as the one supplied with the HUAC-2163 system.
Can the waveforms be saved?
Yes. Waveforms are stored in the instrument and can be copied to a PC over USB for analysis and reports.
Have another question? Ask our application engineers.
Request a quote
Get pricing for the Portable Cable Fault Locator (TDR and Pulse Current)
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Related products
Often ordered together
HUAC-2163
Multi-Pulse Cable Fault Location System
Complete cable fault locator for power cables up to 110 kV: TDR, multi-pulse and arc reflection prelocation, 32 kV surge supply and acoustic pinpointer.
HUAC-212C
Cable Reel Multi-Parameter Field Tester
Field tester for cable on the reel: conductor DC resistance, length (30 m–50 km), resistance per metre and effective cross-section, Bluetooth, battery.
GB/T 3956-2008GB/T 6587-2012