Product Overview
The XZH TEST Portable Trolley Cable Fault Location System (Model: 502+503C+507+535-4TS) is a complete four-in-one mobile diagnostic station purpose-built for municipal utility maintenance crews and distribution network field service teams. Mounted on a rugged portable trolley, this system integrates a 2000J multi-level surge generator, TDR pre-locator, acoustic-magnetic pinpointer, and an all-digital cable path tracer into one seamlessly coordinated platform — enabling a complete fault location workflow from initial pre-location through exact site pinpointing, with full cable route mapping and live cable identification capabilities that no other system in its class provides.
Target Audience: Municipal power utility maintenance departments, electrical distribution network contractors, and professional cable testing service providers — teams that need to locate faults on complex underground cable networks where identifying the correct cable, tracing its route, and pinpointing the fault with minimal excavation are all equally critical to job efficiency.
System Components
1. XHHV535-4TS — 2000J Multi-Level Surge Generator
Impulse Energy Source
Delivers 2000 Joules of surge energy with 3-stage voltage selection (8kV / 16kV / 32kV) for precise energy control across different cable types and fault conditions. Provides the high-energy impulses needed for arc reflection pre-location and acoustic-magnetic pinpointing on 35kV and below underground cables.
- Surge Energy: 2,000 Joules
- Voltage Levels: 8 kV / 16 kV / 32 kV (three-stage selectable)
- Mounting: Trolley-integrated for single-operator mobility
2. XHGG502 — Digital TDR Cable Fault Pre-Locator
Multi-Method Ranging
High-resolution reflectometer supporting three complementary test methods: low-voltage pulse (TDR) for open/short circuits, Impulse Current Equipment (ICE) for high-resistance faults, and multi-shot ARC reflection for complex insulation failures. Large color display with waveform storage and automatic comparison for rapid distance measurement.
- Methods: TDR, ICE, ARC multi-shot reflection
- Display: Color LCD with waveform storage & comparison
- Target: 35kV and below underground power cables
3. XHGX507 — All-Digital Cable Path Tracer & Identifier
Route Mapping & Cable ID
A multi-function digital locator that performs cable route tracing, buried depth measurement, and live/de-energized cable identification. Graphical operation interface provides clear visual guidance, making it easy to distinguish the target cable from adjacent lines — especially critical in congested urban substations and cable galleries where multiple cables run in parallel.
- Functions: Path tracing, depth detection, live cable identification
- Interface: All-digital graphical display
- Advantage: Prevents costly excavation on wrong cables
4. XHDD503C — Acoustic-Magnetic High-Precision Pinpointer
Centimeter-Level Fault Location
Dual-channel synchronous acoustic-magnetic receiver for precise fault pinpointing. Detects the acoustic vibrations and electromagnetic signals generated by surge impulses at the fault location. Synchronized display and headphone audio output enable confident pinpointing to within centimeters — dramatically minimizing the required excavation area and associated road restoration costs.
- Detection: Dual-channel acoustic-magnetic synchronous
- Accuracy: Centimeter-level pinpointing
- Output: Visual meter + headphone audio
Complete System Specifications
| Parameter |
Specification |
| Model |
502 (XHGG502) + 503C (XHDD503C) + 507 (XHGX507) + 535-4TS (XHHV535-4TS) |
| Surge Energy |
2,000 Joules |
| Surge Voltage |
8 kV / 16 kV / 32 kV (three-stage) |
| Pre-Location Methods |
TDR, ICE, ARC multi-shot |
| Path Tracing |
Route tracing + depth measurement + live cable ID |
| Pinpointing Method |
Acoustic-magnetic synchronous dual-channel |
| Target Cable Range |
35kV and below underground power cables |
| Configuration |
Trolley-mounted portable mobile workstation |
| Brand |
XZH TEST |
| Certification |
CE, ISO |
| Warranty |
12 months |
Key Advantages
- Complete 4-in-1 Mobile Workstation: Pre-locator + surge generator + path tracer + pinpointer — every tool needed for a complete fault location mission is integrated on one trolley, eliminating multiple separate equipment cases and setup time.
- Unique Path Tracing Capability: The XHGX507 cable path tracer is the defining differentiator — enabling route mapping, depth measurement, and live cable identification that prevents costly mis-excavation of healthy adjacent cables in congested urban cable corridors.
- Three-Stage Energy Control: 8/16/32kV selectable output provides optimal surge energy for different cable lengths, insulation types, and fault conditions — from short service cables to long distribution feeders.
- Trolley-Mounted Portability: Single-operator mobility — wheel the entire diagnostic station from the service vehicle to the test point without multiple trips or heavy lifting.
- Multi-Method Pre-Location: TDR, ICE, and ARC multi-shot methods in one unit cover all fault types — open circuits, short circuits, low-resistance, high-resistance, and intermittent faults.
Applications
- Municipal Utility Networks: Complete cable fault location workflow for city distribution networks (10kV–35kV) — from substation feeder identification through route tracing to precise excavation-point pinpointing.
- Underground Cable Corridors: Essential for diagnosing faults in congested cable galleries and tunnels where multiple circuits run in parallel and accurate cable identification is mandatory.
- Industrial Park & Campus Distribution: Comprehensive diagnostics on buried HV/MV distribution cables serving industrial complexes, university campuses, and large commercial developments.
Packaging & Delivery
| Item |
Detail |
| Packaging |
Reinforced wooden case with internal foam cushioning |
| Delivery Time |
8 – 15 working days |
| Supply Capacity |
1,200 units per year |
| Payment Terms |
T/T |
| Warranty |
12 months (warranty certificate included) |
| Customization |
Available upon request |
Frequently Asked Questions
Q1: What is the main advantage of the trolley-mounted configuration over standard suitcase kits? The trolley design means one technician can move the entire diagnostic station from the service vehicle to the fault site in a single trip — no need to carry separate instrument cases for the pre-locator, surge generator, pinpointer, and path tracer. All four instruments are mounted and interconnected on the trolley, reducing setup time by approximately 50% compared to assembling individual instruments at the test point. This is particularly valuable for municipal crews responding to multiple callouts per shift.
Q2: Why does this system include a dedicated path tracer when other systems do not? The XHGX507 path tracer addresses a critical real-world challenge: in urban substations and cable corridors, 5–15 cables often run in parallel, and excavating the wrong cable wastes time and money while potentially creating new faults. The 507 enables your crew to positively identify the faulted cable, trace its exact route underground, and measure its burial depth — ensuring excavation occurs only at the correct location on the correct cable. This capability is unique to the 4-in-1 system and is a core differentiator from 3-component alternatives.
Q3: Can the XHGX507 identify live (energized) cables without disconnection? Yes. The XHGX507 supports both passive (50Hz) detection for live cables and active signal injection for de-energized cables. In congested cable galleries, this dual-mode capability allows your team to first identify which cables are live, then trace the specific target cable — a safety-critical function that prevents accidental excavation of energized circuits.
Q4: How does the three-stage 8/16/32kV voltage selector benefit field operations? Different cable types and fault conditions require different surge energy levels. Lower voltages (8kV) are sufficient for short, low-resistance faults while minimizing stress on healthy cable sections. Mid-range (16kV) handles typical distribution cable faults. Maximum output (32kV) provides the energy needed for long cables, high-resistance faults, and aged insulation systems. The three-stage selector lets your crew match the energy to the fault — optimizing results while protecting cable integrity.
Q5: Is on-site training available for the complete system? Yes. XZH TEST provides comprehensive support tailored to this 4-in-1 configuration: 12-month warranty covering all components, remote technical assistance via video call/email, on-site commissioning with hands-on operator training delivered at your facility or substation, detailed English operation manuals with step-by-step workflow guides, and spare parts dispatched within 3–5 working days. We recommend a one-day training session covering the full workflow — from cable identification and route tracing through to precision pinpointing.