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HF-CH-204 Cable Fault Locator
This lightweight Cable Fault Locator supports three testing modes to detect short circuits, open circuits and high-resistance cable faults. With 400MHz high sampling frequency and 0.1m resolution, it features touch control, large sunlight-readable screen and long battery life for outdoor power cable maintenance.
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The cable fault distance tester is used to measure the distance to fault points on power cables. It boasts clear waveform recognition, high resolution and user-friendly interface. Equipped with both touch screen and physical button controls, it delivers easy operation.
It can work independently under the low-voltage pulse mode. The pulse current mode requires cooperation with a high-voltage signal generator, while the multiple pulse mode additionally needs a multiple pulse coupler for cable testing. After distance measurement, a digital multifunctional cable fault pinpoint instrument is required to locate the fault precisely. Combined together, they constitute a high-performance system offering diverse innovative functions for cable fault searching.
Functional Features
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Multiple distance measurement methods
- Low-voltage pulse method: Applies to accurate ranging of low-resistance faults, short circuits and open circuits. It can also measure total cable length, intermediate joints, T-joints, terminal heads, as well as calibrate wave velocity.
- Pulse current method: Suitable for ranging high-resistance and flashover faults. Signals are collected on test leads via a current coupler, achieving complete isolation from high voltage for maximum safety.
- Multiple pulse method: The world’s advanced ranging technology, an upgraded version of the secondary pulse method. Waveforms are easy to identify with superior ranging accuracy.
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400 MHz real-time sampling
It adopts the highest sampling frequency among domestic similar instruments, reaching international advanced standards.It provides a maximum ranging precision of 0.1 m with a small blind zone, ideal for near-end faults and short cables.
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Automatic measurement function
Automatically selects the optimal range and gain, and calculates fault positions to simplify testing.Only available for low-voltage pulse mode. -
Automatic pinpointing function
Analyzes characteristic waveforms of fault signals to output possible fault locations automatically.Only available for low-voltage pulse mode.
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Enhanced picture-in-picture waveform comparison
The interface adopts a picture-in-picture layout consisting of one main window and three pause windows, enabling simultaneous viewing of three stored waveforms. Waveform comparison is simpler, more intuitive and convenient.Supports waveform comparison between low-voltage pulse and pulse current modes, realizing multi-verification of fault positions for higher accuracy. -
Full-screen display function
When amplifying waveforms, the full waveform is displayed synchronously to facilitate fault pinpointing. -
Dual operation modes: touch control + physical buttons
Touch operation is flexible and supports gesture control.Users can drag and double-click cursors for simpler, more convenient fault positioning.
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High-brightness large color LCD display with friendly UI
Waveforms are distinctly displayed; different waveforms are marked with varied colors under multiple pulse tests for easy recognition.8-inch large LCD screen with brightness up to 1500 cd/m², ensuring clear visibility under direct sunlight; supports automatic brightness adjustment. -
Waveform storage & computer communication
Mass waveforms can be stored locally and exported via USB flash drive.Connectable to desktop or laptop computers for online communication.Comes with backend PC software for data management of files exported via USB or online transmission. -
Power management
The device dims the backlight after 1 minute of inactivity and powers off automatically after 30 minutes to reduce power consumption.It will shut down automatically upon low battery to protect the built-in lithium battery pack.Comes with a dedicated charger for reliable charging.Fully charged batteries support continuous operation for over 10 hours.
Technical Specifications
| Item | Parameters |
|---|---|
| Operating Modes | Low-voltage Pulse, Pulse Current, Multiple Pulse |
| Signal Gain Adjustment Range | 70 dB |
| Low-voltage Pulse Output Voltage | 30 V |
| Measurement Error | ± (0.5%×L + 1m), L ≥ 20m |
| Low-voltage Pulse Width | 40 ns ~ 20.5 μs |
| Maximum Resolution | 0.1 m |
| Max. Sampling Frequency | 400 MHz real-time sampling |
| Maximum Ranging Range | 100 km |
| Wave Velocity Setting Range | 100 m/μs ~ 300 m/μs |
| Ranging Blind Zone | 2 m |
| Waveform Storage Capacity | 100 waveforms |
| Communication Interface | USB, Bluetooth (Optional) |
| Power Supply | Lithium battery pack, rated 7.4 V / 6000 mAh |
| Battery Life | Over 10 hours of continuous use (will shorten gradually with battery aging) |
| Charger Parameters | Input: AC 220V, 50Hz; Charging Current: 2A; Charging Time: 6 hours |
| Dimensions | 274 × 218 × 81 mm |
| Weight (Main Unit) | 2.6 kg |
Operating Conditions
- Ambient Temperature: -10℃ ~ +40℃
- Humidity: 5% ~ 90% RH (at 25℃)
- Altitude: Below 4500 m
FAQ – Cable Fault Locator
Q1: What is a Cable Fault Locator used for?
A: It is a professional testing instrument designed to measure the distance of underground power cable faults. It locates open circuits, short circuits, low-resistance and high-resistance insulation faults efficiently for power distribution cables.
Q2: What three working modes does this cable fault tester support?
A: It features low voltage pulse mode, pulse current mode and multiple pulse mode to adapt to different types of cable faults.
Q3: When can I use the low voltage pulse mode alone?
A: It can work independently without extra auxiliary devices. It is mainly applied to test short circuits, broken lines, cable total length, cable joints and calibrate wave velocity.
Q4: Do I need additional equipment for pulse current and multiple pulse modes?
A: Yes. Pulse current mode needs a high voltage signal generator. Multiple pulse mode requires both a high voltage generator and a multi-pulse coupler for complete testing.
Q5: What is the maximum sampling frequency of this device?
A: It adopts 400MHz real-time sampling frequency, which is top-tier among domestic counterparts and meets international advanced standards.
Q6: What is the ranging accuracy and minimum resolution?
A: The highest resolution is 0.1m; measurement error is ±(0.5%×cable length +1m). It performs excellently for short cables and near-end faults with only a 2m blind zone.
Q7: How many waveforms can the instrument store?
A: It can save up to 100 groups of test waveforms locally. Waveforms can be exported to a computer via USB flash drive.
Q8: Can the tester connect to a laptop for data analysis?
A: Yes. It supports USB and optional Bluetooth communication. Matched PC software is provided for waveform viewing, data storage and report management.
Q9: Does the device have automatic measurement and automatic positioning functions?
A: Yes. It automatically selects gain and measuring range to calculate fault positions. Automatic waveform analysis is available under low voltage pulse mode for quick fault judgment.
Q10: Is the display screen suitable for outdoor field work under sunlight?
A: Equipped with an 8-inch high-brightness color LCD screen up to 1500 cd/m², it is clearly visible in direct sunlight and supports automatic brightness adjustment. Different colors are used to distinguish various waveforms for easy identification.
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