EN
RE-TRL Portable Synchronous Cable Fault Pinpointer
RE-TRL Digital Intelligent Acoustic-Magnetic Synchronous Cable Fault Pinpointer with Path Detection Function, High-Sensitivity Dual Sensors, Multi-Stage Filtering, for Power Cable Fault Precise Location and Route Tracing.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
RE-TRL is a professional high-precision cable fault pinpointing instrument designed for final precise location of various cable faults in power operation and maintenance teams, cable construction companies, industrial enterprises and municipal engineering departments. It strictly complies with DL/T 849.2-2004, GB/T 12706.1-2020 and DL/T 596-2021 standards, adopting the acoustic-magnetic synchronous time difference positioning principle that uses the propagation speed difference between electromagnetic wave and sound wave to accurately locate fault points, effectively filtering environmental noise and greatly reducing misjudgment rate.
The instrument integrates high-sensitivity piezoelectric acoustic sensor and electromagnetic induction magnetic sensor for synchronous dual-channel acquisition, achieving ±0.1m positioning accuracy. It is equipped with 4 programmable digital filter modes and 80dB continuously adjustable gain, which can effectively suppress on-site environmental noise and clearly capture weak discharge sound signals. It also integrates electronic compass cable path detection function, which can simultaneously complete cable route tracing and fault pinpointing, eliminating the need for an additional path finder. The 3.5-inch high-brightness LCD display is clearly visible under direct sunlight, and the high-fidelity noise-canceling headphone provides dual confirmation of visual waveform and auditory monitoring.
Specifications
| Parameter | Specification |
|---|---|
| Compliance Standards | DL/T 849.2-2004, GB/T 12706.1-2020, DL/T 596-2021, DL/T 2530.1-2022 |
| Positioning Principle | Acoustic-magnetic synchronous time difference method |
| Positioning Accuracy | ±0.1m |
| Acoustic Sensor | High-sensitivity piezoelectric ceramic type |
| Acoustic Frequency Band | 80Hz ~ 1500Hz (4 filter modes: full pass / low pass / band pass / high pass) |
| Magnetic Sensor | Electromagnetic induction type, detection distance ≥5m |
| Acquisition Channels | 2 independent synchronous channels (acoustic + magnetic) |
| Gain Range | 0 ~ 80dB, continuously adjustable |
| Path Detection | Built-in electronic compass, displays cable direction and relative position |
| Display | 3.5-inch high-brightness color LCD, visible under direct sunlight |
| Monitoring Mode | Waveform visual display + high-fidelity noise-canceling headphone monitoring |
| Special Functions | Auto mute, peak hold, automatic gain control |
| Power Supply | Built-in 7.4V rechargeable lithium battery |
| Battery Life | ≥8 hours continuous working |
| Probe Protection Grade | IP65 (waterproof and dustproof) |
| Operating Temperature | -10℃ ~ +50℃ |
| Ambient Humidity | ≤90% RH (non-condensing) |
| Host Dimensions | 240 × 180 × 100mm |
| Host Weight | ~1.8kg (including battery) |
| Enclosure | Shockproof engineering plastic portable case |
Applications
Core Test Objects
- Cable fault types: Flashover faults, high-resistance grounding faults, low-resistance short-circuit faults, disconnection faults, intermediate joint faults, outer sheath damage faults
- Cable types: 0.4kV ~ 110kV XLPE power cables, oil-impregnated paper cables, PVC cables, control cables, mine cables
- Matching equipment: High-voltage signal generators, cable fault flash testers, cable fault burners
Typical Usage Scenarios
- Power operation and maintenance departments: Cable fault rush repair precise location, daily patrol inspection, fault troubleshooting
- Cable construction companies: Post-laying fault pinpointing, completion acceptance, construction quality verification
- Industrial and mining enterprises: Internal power cable fault maintenance, equipment regular inspection, emergency rush repair
- Municipal and property: Street lamp, community, municipal pipeline cable fault location and maintenance
- Third-party testing institutions: Cable fault detection service, equipment performance verification, construction acceptance test
Advantages
Compliance with Professional Industry Standards
Fully meets DL/T 849.2-2004 general technical conditions for cable fault pinpointers → test methods and indicators comply with power industry specifications, results are authoritative and reliable
Acoustic-Magnetic Synchronous High-Precision Positioning
Magnetic signal as time reference + sound wave distance calculation → filters 90%+ environmental noise, ±0.1m accuracy, greatly reduces misjudgment and excavation workload
Path + Pinpointing All-in-One
Integrated electronic compass path detection function → no need for additional path finder, one instrument completes two tasks, improves on-site work efficiency
Multi-Stage Anti-Interference Design
4 digital filter modes + 80dB gain adjustment + signal matching verification → works stably in noisy urban roads and industrial areas, clearly captures weak discharge signals
Auditory-Visual Dual Judgment
Waveform display + headphone monitoring dual confirmation → reduces the dependence on operator experience, improves first-time pinpointing success rate
FAQ
Q: How does the acoustic-magnetic synchronous pinpointer work?
A: When the high-voltage signal generator breaks down the cable fault point, the discharge simultaneously generates electromagnetic wave and mechanical sound wave. The electromagnetic wave propagates close to the speed of light and reaches the instrument almost instantaneously as the time zero reference; the sound wave propagates slowly in soil and cable media. The instrument calculates the propagation distance of the sound wave by measuring the time difference between the two signals. The closer to the fault point, the smaller the time difference and the louder the sound. The position with the smallest time difference and the loudest sound is directly above the fault point. This method effectively filters out irrelevant environmental noise and has high positioning accuracy.
Q: What types of cable faults can RE-TRL locate?
A: RE-TRL is suitable for almost all common cable fault types, including: flashover faults that break down under high voltage, high-resistance grounding faults, low-resistance short-circuit faults, disconnection faults, intermediate joint faults, etc. It is applicable to power cables of 0.4kV to 110kV voltage grades. With optional step voltage probe, it can also locate outer sheath damage faults of high-voltage cables. It needs to be used with a high-voltage signal generator (or DC high-voltage power supply) to make the fault point discharge.
Q: What is the advantage of acoustic-magnetic method compared with traditional pure acoustic method?
A: The traditional pure acoustic method only judges by sound, which is easily disturbed by environmental noise such as traffic and construction, with high misjudgment rate and high requirements for operator experience. The acoustic-magnetic synchronous method uses the magnetic signal as the time reference to match and verify the sound signal, which can filter out more than 90% of irrelevant noise, has stronger anti-interference ability, more accurate positioning, lower dependence on operator experience, and higher first-time pinpointing success rate.
Q: Can this instrument detect the cable path by itself?
A: Yes. RE-TRL integrates the electronic compass cable path detection function. It can not only pinpoint the fault point, but also detect the laying direction and approximate position of the cable, which is convenient for operators to find the cable path quickly when the cable drawing is missing or inaccurate. One instrument completes path tracing and fault pinpointing, eliminating the need to carry an additional path finder and improving on-site work efficiency.
