Your Professional Partial Discharge Test Equipment Supplier
Founded in 1992 and formally incorporated as Wuhan Moen Intelligent Electrical Co., Ltd. on November 12, 2012, with a registered capital of RMB 36 million, we are a professional technology company specializing in the research, development, and production of high-voltage test equipment. Our 8,000 m² facility in Wuhan East Lake High-Tech Development Zone houses dedicated production lines, R&D centers, and administrative facilities. With an experienced technical and production team, Moen focuses on core products including test transformers, series resonance systems, and other high-voltage testing equipment. Backed by years of industry experience, the company is committed to reliable manufacturing, continuous technical improvement, and providing practical solutions for global power utility and industrial customers.
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Why choose us
Our Certificate
We are certified in ISO 9001 (Quality), ISO 45001 (Health & Safety), and ISO 14001 (Environment), ensuring high standards in all aspects of our operations.
Strong R&D Capability
Committed to technological breakthroughs, including investments to develop 750kV reactor solutions.
Experienced Technical Team
A growing team of 61 employees supporting product development, production, and customer service.
Complete Pre & After-Sales Service
From solution design and technical support to installation, maintenance, and fast response service.
Partial Discharge Test Equipment
Partial discharge testing equipment identifies minute electrical discharges in high-voltage systems, revealing insulation weaknesses before they cause failures. Essential for manufacturers, suppliers, and industrial facilities, this equipment ensures operational safety, reduces maintenance costs, and guarantees high-quality electrical assets.
Main Parameter
|
Rated Capacity |
5-1000kVA |
Impedance Voltage |
10% |
|
Input Voltage |
AC 220V/AC 380V |
Output Voltage Waveform |
Power frequency, sine wave |
|
Output Voltage |
AC 0-1000kV |
Surface Temperature |
Oil immersed:<55ºC |
|
Partial Discharge |
Under rated voltage≤5PC |
No-load Loss |
0.2%-0.35% |
|
Insulation Mode |
Oil, Gas |
Allowed Continuous Operation Time |
1min as per |
Features of Partial Discharge Test Equipment
Detection of Partial Discharges: The primary task of a partial discharge measuring device is to accurately capture discharges within the insulation. These devices are designed to detect even the smallest discharge impulses, which are invisible to the naked eye.
Measurement of Discharge: Partial discharge measuring devices measure the strength and frequency of discharges that may indicate damaged insulation. These measurements help assess the condition of the insulation and determine the need for repairs or maintenance actions.
Determination of the Partial Discharge Level: The measurement results from a partial discharge measuring device provide important information about the severity of the partial discharge. A high value may indicate serious insulation issues, while a low value suggests that the insulation is still in good condition.
Frequency Analysis: Some advanced partial discharge measuring devices offer a frequency analysis of discharge impulses to precisely determine the source of the discharges. This helps identify potential weak points in the insulation or electrical components.
Localization of Discharges: For larger systems and devices, locating partial discharges can be critical. Some partial discharge measuring devices can pinpoint the location of the discharge within specific parts of the system or component, making maintenance and repair work more efficient.
Advantages of Partial Discharge Test Equipment
Partial discharges are often a precursor to future insulation failure. By identifying partial discharges early, companies can take action before more significant damage occurs and expensive repairs are needed.
By continuously monitoring and timely maintaining the insulation, companies can extend the lifespan of their high-voltage systems and reduce the likelihood of failures.
Partial discharges can, in the worst case, lead to a complete insulation breakdown, causing dangerous short circuits or fires. A partial discharge measuring device can detect such risks early and prevent them.
Through preventive maintenance based on partial discharge measurement results, downtime can be significantly reduced. This not only saves costs but also ensures the continuous operation of systems.
Many industries have strict regulations and standards that require regular measurement of partial discharges to ensure the safety and efficiency of electrical systems. Partial discharge measuring devices help meet these requirements and ensure compliance with standards.
Offline Partial Discharge Test Device
Tests equipment taken out of service and energized with an external voltage source. Allows precise control of test voltage and stress levels.
Permanently Mounted PD Sensors
Fixed sensors installed on equipment for continuous or periodic monitoring without shutdown. Long-term condition monitoring of substations, switchgear, cable terminations
Ultrasonic Partial Discharge Tester
Uses ultrasonic probes to detect high-frequency sound waves generated by PD in fluid or gas insulation.Oil-filled transformers, SF₆ gas compartments, sealed chambers
PD Surveyor
Handheld device for rapid on-site detection of PD activity in energized systems.Medium-voltage power cables and accessories
PD Scanner (PD Scan)
On-line handheld scanner that detects PD in operating MV and HV equipment without interrupting service. Switchgear, substations, cable systems, distribution networks
Applications Of Partial Discharge Test Equipment
Power Supply Industry: In the power supply industry, partial discharge measuring devices are used to test transformers, cables, and other high-voltage components. Monitoring partial discharges helps detect problems and ensures the operational safety of the power grid.
Electrical Industry and Mechanical Engineering: In the electrical industry, partial discharge measuring devices are used to monitor electrical systems, machinery, and equipment. These measurements are crucial for quality control and maintaining electrical safety.
Automotive Industry: In the automotive industry, particularly with electric and hybrid vehicles, partial discharge measuring devices are used to monitor high-voltage batteries and electrical systems, ensuring they are properly insulated.
Medical Devices: In medical technology, partial discharge measuring devices are used to monitor the insulation of medical devices that operate with high voltage, such as X-ray machines, MRIs, and defibrillators.
Research and Development: In research and development for high-voltage systems and new technologies, partial discharge measuring devices are used to test the insulation of prototypes and new devices.
How To Choose Partial Discharge Test Equipment
Ensure that the partial discharge measuring device covers the required measurement range and sensitivity for your applications. The measurement range can vary depending on the device type.
The company is a 'Member of China Interior Decoration Association', 'National Excellent Enterprise in Air Interior Decoration', and was rated as 'Top Ten Brands of Electric Curtains', with 7 product patents, and it is well-known in the industry.
If you need detailed information about the source of partial discharges, choose a device that offers frequency analysis and the ability to locate discharges.
Ensure that the partial discharge measuring device complies with relevant safety standards and is certified for reliable and accurate measurement.
If you need to use the device on-site, ensure that it is portable and durable to provide reliable performance even in harsh conditions.
Working Principle of Partial Discharge Test Equipment
Pulse Current
Nanosecond transient current pulses in grounding wires or neutral points.
Electromagnetic Waves
Wide-spectrum EM radiation (from LF to VHF/UHF bands).
Ultrasound
Acoustic/ultrasonic waves emitted at the discharge site.
Light
Visible/UV light (e.g., from corona discharges).
Gas Generation
Characteristic gases (e.g., H₂, C₂H₂ in oil-insulated equipment).
Heat
Minor localized temperature rise.
Install of Partial Discharge Test Equipment
Initial Set-up
User should first locate the main testing area, ideally next to where the PD sources are likely to be found. Then they should set up the main testing device on a steady surface. PD testers normally need to be plugged into the main power, so users should ensure there is an outlet nearby to avoid any interruptions.
Attach External Sensors
Buyers should connect any external sensors, such as HFCTs or capacitive couplers, to the PD tester according to the manufacturer's guidelines. They should ensure the sensors are attached securely so nothing disrupts the signal. After that, they should run the tester's calibration routine to ensure all the attached equipment is working properly.
Connecting to the Power System
Users should connect the capacitive couplers or HFCT sensors to the insulated surfaces of the cables or other electrical equipment that they want to monitor. They should use appropriate personal protection equipment and follow safety precautions to ensure the connections are made without exposing themselves to high voltage.
Setting Parameters
Before starting the test, the testers normally have configurable parameters like voltage level and sensitivity. Customers should adjust these settings based on the equipment they are monitoring and the standards they want to meet. They should refer to the PD tester's guidelines for recommendations on test parameters.
Commence Testing
After completing all the above steps, buyers should click on the start button on the PD tester to begin monitoring. The equipment should then live track any partial discharges occurring within the power system. During testing, users can check the real-time data display for any signs of PD activity.
Maintain
Keep the Device Clean
Cleaning the device regularly will help ensure the equipment performs at its best. Users can use a soft, dry cloth to clean the device. They should completely avoid using any abrasive materials consuming any chemicals that may have an effect on the device's casing and void the warranty.
Monitor Battery Health
In cases where the equipment has a battery, users should ensure they often check the battery level before carrying out any tests. They should also charge the battery fully overnight to last them for the following day's tests. If the battery is old and no longer providing long usage hours, they should consider replacing it.
Inspect Cables and Connectors
To maintain the PD test tools, customers should routinely check all cables, sensors, and connectors for wear or damage. They should replace any frayed cables or faulty connectors before there is equipment downtime. A visual inspection before each use is normally enough to catch most common problems.
Calibrate Annually
For businesses that test large quantities of PD equipment, they should ensure they take the devices for calibration once each year. Professional calibration ensures the device measures accurately according to industry standards. It also prevents equipment monitoring problems.
Update Software
Many PD testers these days come with software that needs users to update it occasionally to give them new features. Businesses also update software to patch any bugs that could affect testing procedures. Users should check regularly for updates on the manufacturer's site and install them on their devices.
Certificates
FAQ
As one of the most professional partial discharge test equipment manufacturers in China, we're featured by quality products and good price. Please rest assured to buy high quality partial discharge test equipment in stock here and get quotation from our factory. Customized orders are welcome.
