ARC Multi-Pulse Cable Fault Pre-Locator 400MHz 120km Range 0.07m Resolution with DC 35kV Coupler XHGG502A

The XHGG502A is a professional ARC cable fault pre-locator built around an industrial 10.1-inch touch all-in-one computer with embedded system architecture. It integrates modern electronic and computer technologies to perform signal filtering, high-speed A/D acquisition, data processing, graphic display, and waveform analysis — completing cable wave velocity, length, and fault distance measurement in a single workflow. The instrument covers the full spectrum of cable fault types: low-resistance short circuits, open circuits, disconnections, leakage high-resistance, and flashover high-resistance faults on power cables, high-frequency coaxial cables, street light cables, and buried wires of all materials, cross-sections, and dielectric media. All technical indicators comply with GB/T 18268.1, DL/T 849.1-2019, and JJF1042-2020.

What distinguishes the XHGG502A from conventional pre-locators is its proprietary eight-pulse ARC multi-pulse method. When connected to the included DC 35kV pulse coupler, the instrument fires 8 sequential pulses at the cable fault point, simultaneously displaying 8 groups of high-voltage and low-voltage comparison waveforms on the 10.1-inch screen. The system mathematically converts any high-resistance fault trace into a clean low-resistance short-circuit equivalent waveform — making interpretation virtually unambiguous and enabling automatic distance calculation that requires no expert waveform analysis skills. This technology, combined with three test modes (TDR low-voltage pulse, ICE impulse current, and ARM arc reflection multi-pulse), delivers the highest fault detection success rate and test precision available in its class.

No additional accessories required. No separate coupler purchase. No missing cables. Everything needed for TDR, ICE, and ARM multi-pulse testing is included in the standard shipment.

• 10.1-inch High-Brightness TFT Touch Display: 1024*600 resolution, 280nit ultra-bright LED backlight. Waveforms remain sharp and readable under direct sunlight. Touch + coded push-button dual operation — touch for software navigation, physical buttons for gloved-hand control in wet conditions.
• 400MHz Sampling, 0.07m Resolution, 120km Range: Variable 1MHz~400MHz A/D conversion with industry-leading 0.07m minimum resolution — over 7* finer than conventional 100MHz instruments. 10 selectable range presets from 100m to 100km, plus ≥120km maximum capability.
• Eight-Pulse ARC Multi-Pulse with Included DC 35kV Coupler: 8 sequential pulses generate comparison waveform sets that convert complex high-resistance faults into simple short-circuit equivalents. Automatic distance calculation with manual analysis override. No extra coupler purchase required.
• Three Integrated Test Methods: TDR (low-voltage pulse: 300V±15%, 8 widths from 0.1μs to 10μs), ICE (impulse current flashover), and ARM (arc reflection 8-pulse multi-pulse). One instrument covers every cable fault scenario.
• Fully Automatic Operation: Automatic continuous sampling — never misses a transient discharge waveform. Automatic range setting selects the optimal test preset. Automatic waveform analysis identifies the fault reflection and displays the distance — no manual cursor placement required.
• 8,000+ Waveform Storage with USB Export: Save and name waveforms by job site, cable ID, or date. Recall and compare historical traces against current faults. USB export to PC software for formal report generation, archival management, and advanced comparative analysis.
• Embedded System — Rock-Solid Stability: Purpose-built embedded architecture — no Windows overhead, no software licensing, no unnecessary processes. Full English menu. Fast boot, low power consumption, crash-resistant operation.
• IP54 Protective Chassis: Dust-protected and splash-proof. Functions reliably from -20℃ sub-zero substation maintenance to +65℃ desert cable trench diagnostics.
• Built-in 11.1V Lithium Battery: Approximately 2-hour fast charge delivers over 5 hours of continuous field operation. Dual AC/DC — plug into AC 110V~240V mains or operate entirely on battery.

Method	Best For	Typical Application
TDR — Low-Voltage Pulse	Low-resistance, short-circuit, open-circuit, disconnection faults	Routine cable maintenance, pre-splice verification, cable length & wave velocity calibration
ICE — Impulse Current Flashover	High-resistance leakage faults (above several hundred Ω); flashover high-impedance faults	Post-withstand-voltage-test failure analysis, aging cable diagnostic assessment
ARM — 8-Pulse ARC Multi-Pulse	All high-resistance faults — converts any complex trace to short-circuit equivalent	Difficult-to-interpret single-pulse results; faults on mixed-dielectric cables; multi-joint long-distance cables

packing list

Instrument Component List
name	quantity	Graphics	name	quantity	Graphics
Cable Fault Tester	1		Coupler	1
Single Q line	1		Double Q line	1
Sampler	1		power cord	1
Coupler high voltage line A	1		Coupler high voltage line B	1
ground wire	1		USB communication cable

Q: Does the coupler come with the instrument?
A: Yes. The DC 35kV pulse coupler (430*380*220mm, 10kg) is included as standard in every XHGG502A shipment, along with coupler high-voltage connection cables A and B.

Q: Can it test XLPE (cross-linked polyethylene) cables?
A: Yes. The XHGG502A is suitable for all cable insulation types — XLPE, oil-impregnated paper, rubber, and PVC — across low-voltage (6kV and below), medium/high-voltage (6kV~35kV), and high-voltage (66kV+) power cables.

Q: Does the instrument work without mains power?
A: Yes. The built-in 11.1V lithium battery supports low-voltage pulse testing for open-circuit and low-resistance faults without external power. For high-voltage flashover and multi-pulse methods, connect to AC 110V~240V or a generator.

Q: Can waveforms be exported to a computer?
A: Yes. All 8,000+ stored waveforms can be exported via USB to PC software for archival management, comparative analysis, and formal report generation.

Q: Is training included?
A: Each shipment includes a comprehensive user manual. Contact us for on-site training, remote video support, or extended warranty options tailored to your team's requirements.