MY-140 Portable Trolley Cable Fault Detector, Integrated HV Pulse Cable Fault Locating Equipment for Substation Buried Cable Fault Inspection

MY-140 Portable Trolley Cable Fault Detector, Integrated HV Pulse Cable Fault Locating Equipment for Substation Buried Cable Fault Inspection

Product Description

This device is used to detect main insulation faults of power cables with voltage levels of 35kV and below; calibrate cable
length; accurately detect cable burial direction and depth.
This device integrates a cable fault tester(pre locator), a cable routing device launch module, a high-voltage pulse generator, and a large capacity.
The cable fault location system integrated with the battery pack is mainly composed of four parts.
Cable fault tester(pre locator), simple operation software interface, single-chip centralized control, touch operation mode,
built-in large-capacity lithium-ion battery, stable and reliable, easy to use. Independent power supply and power supply system are used to prevent power supply interference during shock discharge. For details, see the cable fault tester section.
The cable path meter is powered by an internal battery pack, which is easy to use and includes functions such as overload
protection and amplitude adjustment. See the Cable Router section for detailed instructions.
The high-voltage pulse generator is powered by an internal battery pack or 220VAC, including DC withstand voltage, single pulse, and periodic pulse output functions, including a signal feedback device to facilitate sampling of the cable instrument host; including zero position protection, automatic discharge when shutdown and other functions. See the High Voltage Pulse Generator section for details.
Large-capacity battery pack: 12.6V battery pack, which provides power for high-voltage pulse generator and cable routing
instrument.
This cable fault location system is suitable for low-resistance, short-circuit, open-circuit and disconnection faults of power
cables, high-frequency coaxial cables, street light cables, and buried wires of various materials with different cross-sections and different media, as well as high-resistance leakage and high-resistance flashing. network failure.

Product Alias

Trolley‑type HV Pulse Cable Fault Locator / Mobile Underground Cable Fault Test System / Wheeled Cable Breakdown Detector / High‑voltage Pulse Generator for Cable Fault Testing / On‑site Buried Power Cable Fault Point Locator / Cable Fault High‑voltage Pulse Discharge Unit

Features

1.  Industrial grade 7″ LCD display, working temperature –20℃～+60℃;
2.  Single-chip centralized control, touch operation mode, strong anti-interference ability; 3.  With the functions of distance measurement, speed measurement, resistance measurement, etc.;
4.  Fully automatic continuous sampling, without missing any discharge waveform;
5.  Test method: flashover sampling, low voltage pulse sampling.

Product Parameters

Scenarios

FAQ

Question 1: Cannot trigger cable breakdown, fail to locate cable fault point
Customer: We use this wheeled cable fault tester for underground buried cable fault location on‑site. After setting test parameters, high‑voltage pulse cannot break down the cable fault point, and fault position cannot be found. What are the possible reasons?
Manufacturer: This issue frequently occurs during field power‑grid maintenance work. Please perform step‑by‑step troubleshooting: First, double‑check all high‑voltage output wiring and ground connection, ensure high‑voltage cable clips and ground terminals are tightly fastened without loose connection, rust or dirt. Second, confirm that selected test voltage level matches actual cable insulation grade and fault resistance condition. Third, verify cable type, total cable length and fault‑mode selection in software menu are correctly configured. If above checks cannot resolve the problem, please get in touch with our technical team immediately. Do not open the cabinet cover by yourself for high‑voltage component inspection.
Question 2: Measured fault distance has large deviation vs actual cable fault position
Customer: The tester boots and outputs high‑voltage pulse normally without alarm prompts. However, the calculated fault distance reading shows obvious deviation from real fault location. How should we handle this situation?
Manufacturer: Large positioning deviation is generally caused by poor contact of test cables, wrong parameter setup or strong site electromagnetic interference. Please follow these operations: First, clean oxide and dirt on cable end terminals and all test clamp contact surfaces, make every connection reliable. Second, correctly input actual cable total length, cable wave velocity and cable type parameters into test system. Third, keep high‑voltage pulse output cables far away from other heavy‑current power lines to reduce electromagnetic interference. If deviation still remains, re‑confirm cable laying route and joint distribution status of the tested underground cable.
Question 3: Over‑temperature protection alarm triggers during continuous pulse discharging; fan stops working
Customer: After repeated high‑voltage pulse discharge operations for cable breakdown, the cooling fan stops running and over‑heat protection alarm pops up. Alarm still exists after power‑off restart. Does it mean internal hardware is damaged?
Manufacturer: Please do not worry. In most scenarios, it is thermal protection activation instead of permanent component damage. Repeated continuous high‑energy pulse discharge will raise internal cabinet temperature and trigger thermal lock‑out protection. If reset operation is not executed, control circuit will keep locked status. Recommended operation steps: Cut off main input power supply, keep unit powered‑off for about 30 minutes for sufficient natural cooling. Re‑energize the test bench, press cabinet reset button to release protection lock, then restart your cable fault test. If cooling fan still cannot operate properly after cooling process, please contact our technical support team; cabinet disassembly is strictly forbidden.
Question 4: Unit triggers unexpected shutdown and tripping during high‑voltage pulse output
Customer: When performing multiple groups of cable fault breakdown tests in field substation site, the wheeled tester will occasionally shut down automatically and input power trips intermittently, which interrupts field fault‑locating work. How to avoid this issue?
Manufacturer: Unexpected shutdown and tripping are mainly caused by unstable power‑supply input, severe on‑site electromagnetic interference or unqualified protective grounding. It is recommended to adopt independent power supply with sufficient power capacity; do not share power circuit with other large‑power field equipment. Ensure complete and reliable protective grounding for the whole trolley‑type test system with qualified grounding electrode. Place the test cabinet away from high‑current interference‑generating equipment. For tripping faults, check whether site input power capacity meets equipment technical requirements. If trouble persists after completing above troubleshooting, send us detailed on‑site condition description, we will arrange remote technical guidance service.
Question 5: Transportation, handling and on‑site high‑voltage operation precautions
Customer: This wheeled cable fault tester is heavy trolley‑mount high‑voltage equipment. What critical points shall we pay attention to for transportation, moving, wiring and field test operation?
Manufacturer: Please comply with the following important requirements: First, this is high‑voltage pulse test equipment. Reliable protective grounding must be completed before any test operation. At least two skilled high‑voltage operators are required, strictly follow local high‑voltage safety operation regulations. Never connect the device to live power cable. Second, all high‑voltage output cables and ground wires shall be wired strictly according to user manual; mis‑wiring may damage test unit and bring personal safety hazard. Double‑check all wiring connections before pulse discharge. Third, avoid heavy collision, violent shaking and drop impact during trolley transportation and moving, to prevent damage to internal high‑voltage insulation assemblies. Fourth, clean cable end terminals and keep them dry before connecting test clamps, avoid surface leakage affecting pulse discharge effect and positioning accuracy. Fifth, store the trolley‑type cabinet in dry and ventilated warehouse environment, keep away from rain, moisture and corrosive substances. Read full instruction manual thoroughly before first‑time operation, and assign experienced high‑voltage testing staff to carry out all field work.
Question 6: Shipping Method
Customer: If we place an order, how do you typically ship the goods? Will there be any issues with transporting bulky items such as reactors?
Manufacturer: We default to using dedicated logistics lines or brand-specific express shipping services; small-sized main units and accessories may also be shipped via standard courier services. Large items, such as reactors and excitation transformers, are packed using wooden crates or wooden frames for reinforcement to prevent bumps and moisture exposure during transit; a packing list is included with each package to facilitate item-by-item counting for you. Logistics costs are typically determined by both parties in accordance with the contract terms; after shipment, we will send you both the tracking number and the carrier's contact phone number for easy tracking.If your project site is remote or if delivery to the site is required with a specified logistics company, please inform us in advance when placing your order; we can then coordinate and arrange accordingly.
Question 7: Delivery Lead Time
Customer: Our project is under tight deadlines; how long will it take for the order to be shipped after we place it? Can we request expedited shipping?
Manufacturer: Standard specifications – stock available; typically delivered upon receipt of the order. Orders can be shipped within [X] working days; for non-standard products requiring customized voltage levels, capacities, or reactor combination configurations, the production cycle typically ranges from [X] to [Y] days.The delivery time will be approximately 7-15 working days; the specific timeline shall be subject to the sales confirmation provided upon order placement. If your project has a tight schedule, please inform us of the latest expected delivery date before placing your order; we will first verify the production schedule and inventory status, and where possible, will coordinate expedited production and prioritize shipment. However, it is recommended to allocate sufficient transit time for logistics to avoid delaying on-site testing.
Question 8: After-sales Service and Warranty
Customer: What is the warranty period for this equipment? If any issues arise during on-site use, how will your after-sales service respond?
Manufacturer: We provide a two-year free warranty on the entire unit and lifelong technical support services. During the warranty period, if issues arise due to defects in the equipment itself, we will provide free repair or replacement of components; when problems occur on-site, we commit to responding within 24 hours; most wiring and parameter configuration issues can be resolved through remote guidance via video or telephone; for cases where an on-site visit is necessary, we will arrange for our technicians to arrive at the location to resolve the issue. After the warranty period expires, we still offer repair services, with spare parts supplied at cost price for the long term, and software updates provided free of charge for life. Upon delivery of the equipment, we also offer free operational training (video operation guides)to ensure that your testing personnel can operate the equipment independently and proficiently; should you have any further questions, please feel free to contact our dedicated after-sales hotline directly.
Question 9: Shipping methods for each region (Sea freight)
Customer: Our projects are distributed across several states, and our procurement volumes are substantial; are the shipping methods consistent across all states? How is the delivery time calculated?
Manufacturer: The specifications are identical; however, it should be specifically noted that this equipment set is large in size and heavy in weight—components such as the reactor and excitation transformer are all classified as heavy components. Therefore, regardless of which state or region the shipment is destined for, we will uniformly utilize sea freight transportation. The packaging employs export-grade wooden crates with reinforced structures, along with moisture-proof and rust-proof treatments; the design of these wooden crates is optimized for long-distance sea transport and multiple lifting and transshipment operations. Upon arrival at the destination, simply unpack the goods and conduct an inspection before putting them into use. Regarding delivery time, the sea freight transit period depends on the port of destination: near-sea routes are generally faster, whereas ocean routes may take longer; the exact number of days will be confirmed based on the shipping schedule specified in the bill of lading. We have a dedicated freight forwarding agency to handle booking of shipping space, customs declaration, insurance, and other related procedures; once the vessel departs, we will send you documents such as the bill of lading and the packing list, enabling you to arrange for the receipt of goods at the port of destination and their inland transshipment in advance

Shipping scenario

Scene (One)

Scene (Two)

Attachment Directory

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