Controllable Discharge High Voltage Surge Generator for Distribution Cable Testing

Controllable Discharge High Voltage Surge Generator for Distribution Cable Testing

Product Description

The high-voltage impulse generator fully complies with DL/T846-2016 "General Technical Conditions for High Voltage Test Equipment" and DL/T474-2017 "Guidelines for the Implementation of Field Insulation Tests". It is mainly used for impact discharge during fault testing of cables with voltage levels of 35kV and below; it can also be used for DC withstand voltage tests of other electrical equipment.
This device integrates DC high-voltage source, energy storage capacitor, and discharge ball gap into one. This equipment
completely replaces the traditional test transformer weighing hundreds of kilograms, operation box and pulse energy storage capacitor (generally a set of 5kVA transformer weighs more than 60 kg, and the control box more than 30 kilograms, and more than 20 kilograms of pulse energy storage capacitors).
The power supply adopts high-precision, high-stability special high-voltage electronic components and high-frequency high-voltage technology, which makes the whole machine simple in structure and ultra-light in weight. The pulse generator adopts humanized design and operation mode, which is safe and reliable. It really achieves the effect of not being damaged by impact, and it can also work normally when the high voltage is short-circuited to the ground. It is currently the lightest and most user-friendly portable DC impact high-voltage equipment. It is an ideal product for power cable fault detection.
Product Alias

High Voltage Surge Generator / High Voltage Pulse Generator / Cable Fault Surge Power Supply
Features

1. Has a high voltage side, low voltage side and supply-side triple over-current, over-voltage and over-heating protection functions;
2. Absolutely uniform impulse discharge, controllable.
3. Super function of short circuit protection, high voltage output can work short circuit to ground directly;
3. With current, voltage dual 1.5 scale pointer table display, intuitive clear, impact-discharge process at a glance;
4. High side voltage measurement, accurate real-time display, connecting microampere meter high side can act as DC high voltage generator
5. With function of overheating protection ,zero start protection, potential meter return to zero output ,safe and reliable;
6. The unique design of self-discharge, output voltage in the stop mode is zero; voltmeter indicates real-time capacitance and voltage
Product Parameters

Application Scenarios

FAQ

Question 1: No surge output / Surge discharge does not trigger
Customer: The machine powers on normally, voltage adjustment works, but there is no surge discharge and no impact sound when testing cable faults. What should I check?
Manufacturer: First inspect the high-voltage discharge wiring and discharge gap, confirm the discharge electrode is not stuck or oxidized. Check if the tested cable has serious short-circuit or open circuit that cannot form a discharge loop. Verify the charging and triggering control circuit status, restart the device after discharging all residual voltage. If the fault still exists, stop operation immediately and contact technical support. Do not disassemble the internal high-voltage components by yourself.
Question 2: Instrument overvoltage protection alarm frequently during operation
Customer: When boosting the voltage for cable fault pinpointing, the device triggers overvoltage protection alarm frequently and cannot keep stable working. What are the possible reasons?
Manufacturer: Confirm that the cable insulation condition is not seriously damaged, which may cause unexpected breakdown and instantaneous overvoltage. Check whether the ground wire is thick enough and well connected to the grounding grid, poor grounding will induce abnormal voltage feedback. Reduce the boosting speed and try lower output voltage first. Do not shield the cooling fan. If the alarm repeats continuously, cut off the power supply and wait for professional inspection.
Question 3: Output voltage meter shows unstable, voltage reading fluctuates wildly
Customer: After adjusting the voltage knob, the voltage pointer shakes continuously and cannot stay at a fixed value, which affects the cable fault test work. What causes this phenomenon?
Manufacturer: Check if the high-voltage connection line is loose, aging or damp, damp insulation will lead to leakage current and unstable voltage. Confirm the grounding terminal is tightly connected without virtual connection. Keep the instrument away from strong electromagnetic interference sources. Clean the surface of high voltage components to remove dust and moisture. If the reading remains unstable, stop using and contact technical team.
Question 4: Cooling fan does not work after power on
Customer: The host can charge and output surge normally, but the built-in cooling fan does not rotate at all, worried about overheating damage during long-time test. How to deal with it?
Manufacturer: First check whether the fan power supply wiring is loose or disconnected. Check if foreign matter blocks the fan blades and causes jamming. Do not run the machine continuously for a long time without cooling function. Turn off the power and wait for the equipment to cool down. It is forbidden to continue high voltage test when the fan fails, otherwise the high voltage module may be burned. Please contact technical support for fan replacement.
Question 5: Discharge spark is weak, pinpoint signal is too faint to locate fault
Customer: The surge discharge can happen, but the spark is weak, the signal captured by the path finder is too small, and it is hard to find the fault point accurately. What can I do?
Manufacturer: Confirm the working voltage matches the required level for this cable fault, properly increase the output voltage within the rated range. Check the high voltage cable and discharge rod for insulation aging and leakage. Confirm the grounding resistance meets the requirement, high grounding resistance will consume surge energy. Check whether the fault point is buried too deep or covered by thick metal layer. Adjust the discharge interval properly, do not repeatedly discharge in a short time to avoid equipment overheating. If the effect is still poor, communicate with the supplier to confirm whether the power specification matches your test demand.

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.
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