Digital Acoustic-Magnetic Cable Fault Pinpointer|XHDD503C+
Product Overview
The XHDD503C+ is a precision cable fault pinpointer utilizing acoustic-magnetic synchronization technology for accurate fault location within the pre-located rough measurement range. The instrument captures and analyzes the acoustic and magnetic time difference generated by impact discharge at the fault site, combining vibration pickup and electromagnetic induction principles to deliver pinpoint accuracy. Equipped with a 1.5-inch high-brightness touchscreen LCD (480x850 resolution, 350 nits), the XHDD503C+ ensures clear visibility even under direct sunlight during outdoor field operations.
Suitable for low-resistance, short-circuit, open-circuit, broken-circuit, high-resistance leakage, and flashover faults across power cables, coaxial cables, and low-voltage cables of various voltage levels, cross-sections, and dielectric media. Compliant with DL/T 849.2-2019 and GB/T 18268.1 standards.
Key Features
- Acoustic-magnetic synchronous positioning with automatic time difference calculation
- 1.5-inch touchscreen high-brightness LCD (480x850, 350 nits) — sunlight readable
- Automatic and manual gain/trigger adjustment for both acoustic and magnetic channels
- Four selectable filter modes: Full Pass, Band Pass, Low Pass, and High Pass
- BNR background noise reduction and mute noise reduction for challenging field environments
- Fifth-order superposition filtering for enhanced signal clarity
- Path deviation indication with approaching fault point prompt
- Highly sensitive, noise-resistant, fully digital fixed-point probe
- Multi-layer physical isolation signal sensors with IP65 waterproof rating
- Built-in high-capacity lithium battery with over 8 hours standby and fast charger
- Compact and lightweight design — main unit 0.82 kg, probe 2.2 kg
Technical Specifications
| Positioning Method |
Acoustic-Magnetic Synchronization |
| Detection Accuracy |
Positioning: ≤ 0.1 m; Path: ≤ 0.5 m |
| Detection Range |
0.00 - 99.99 ms |
| Filter Modes |
Full Pass (100Hz-1600Hz), Band Pass (200Hz-600Hz), Low Pass (100Hz-300Hz), High Pass (160Hz-1600Hz) |
| Filtering Method |
Fifth-Order Superposition Filter |
| Channel Gain |
8 Levels (Sound & Magnetic); Trigger Threshold 0-99 Levels |
| Sound Output |
16 Levels Gain (0-112 dB), 350Ω Impedance |
| Display |
1.5-inch Touchscreen LCD, 480x850, 350 nits |
| Waterproof Rating |
IP65 (Multi-Layer Physical Isolation Sensors) |
| Power Supply |
3.7V 3200mAh 18650 Battery x4 |
| Standby Time |
> 8 Hours |
| Operating Temperature |
-25°C to 65°C; RH ≤ 90% |
| Case Dimensions |
428L x 350W x 230H mm |
| Total Weight |
7.5 kg |
| Main Unit |
190L x 75W x 135H mm, 0.82 kg |
| Probe |
200 Dia. x 130H mm, 2.2 kg |
| Compliance |
DL/T 849.2-2019 / GB/T 18268.1 |
Packing List
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Instrument Component List and Diagram
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name
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quantity
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Graphics
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name
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quantity
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Graphics
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Cable Fault Locator
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1
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probe
(Including connecting rod, base, ground pin , probe connector, and disc connector )
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1
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|
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7-core shielded signal cable
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1
|
|
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charger
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1
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Headphones
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1
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|
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Multifunctional
Flower wrench
|
1
|
|
Frequently Asked Questions
Q1: How does acoustic-magnetic synchronization improve fault location accuracy?
The acoustic-magnetic method simultaneously detects the electromagnetic signal (which travels at near-light speed) and the acoustic signal (which travels at sound speed through soil). By measuring the time difference between these two signals, the instrument calculates the precise distance to the fault point with accuracy within 0.1 meters, eliminating guesswork from traditional audio-only methods.
Q2: Which filter mode should I select for different field conditions?
Four modes are available: Full Pass (100Hz-1600Hz) for general use with minimal interference; Band Pass (200Hz-600Hz) for balanced noise rejection; Low Pass (100Hz-300Hz) for soft soil or sandy terrain where high frequencies attenuate quickly; High Pass (160Hz-1600Hz) for hard pavement or concrete surfaces close to the fault point where low-frequency background noise is dominant.
Q3: What types of cable faults can the XHDD503C+ detect?
The XHDD503C+ is suitable for low-resistance faults, short-circuit faults, open-circuit (broken-circuit) faults, high-resistance leakage faults, and flashover faults across power cables, high-frequency coaxial cables, street light cables, and buried wires of various materials, cross-sections, and dielectric media.
Q4: Is the IP65 rating sufficient for wet and dusty environments?
Yes. The IP65 rating means the instrument is fully dust-tight and protected against low-pressure water jets from any direction. The multi-layer physical isolation sensors provide additional protection for the sensitive probe components, making the XHDD503C+ reliable in rain, mud, construction dust, and high-humidity environments.
Q5: How long does the battery last during continuous field use?
The built-in 3.7V 3200mAh 18650 lithium battery pack (4 cells) provides over 8 hours of continuous standby operation. A full charge takes approximately 4 hours with the included fast charger. The instrument can be used while partially charged without damaging the battery.
Q6: Can the XHDD503C+ be operated by a single technician?
Absolutely. The total system weight is 7.5 kg with the main unit weighing only 0.82 kg and the probe at 2.2 kg. The compact dimensions and intuitive touchscreen interface allow a single operator to carry, set up, and perform fault pinpointing independently in most field scenarios.
Q7: What standards does the XHDD503C+ comply with?
The XHDD503C+ meets the acoustic-magnetic positioning requirements of DL/T 849.2-2019 (General Technical Conditions for Special Testers for Power Equipment — Cable Fault Pinpointer) and GB/T 18268.1 (Anti-interference requirements for test equipment used in industrial sites).
Q8: What accessories are included with the instrument?
Standard accessories include the main unit, digital probe with connecting rod and tripod base, 7-core shielded signal cable, professional monitoring headphones, fast charger, multifunctional wrench for assembly, and a rugged carrying case. All items are packed in the 428L x 350W x 230H mm protective case.
Q9: Can the XHDD503C+ work with any high-voltage pulse generator?
The XHDD503C+ is compatible with standard high-voltage pulse generators used for cable fault pre-location. It requires a periodic discharge cycle of 3-5 seconds for optimal acoustic-magnetic time difference measurement. For best results, pair it with XZH TEST's XHHD523L or XHHG521A pre-locators for a complete fault-finding workflow.
Q10: What warranty and after-sales support is provided?
XZH TEST provides a standard product warranty covering manufacturing defects. Comprehensive English user manuals are included, and remote technical support is available for operational guidance. On-site commissioning and operator training can be arranged for bulk orders. Spare parts and accessories are kept in stock for rapid dispatch.
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