Your Professional Turn-to-turn Tester 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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Full-Function Turn-to-Turn Surge Withstand TesterThe MOEORW-WGZ10 Impulse Winding Tester uses high-voltage pulse waveform comparison to quickly and non-destructively detect turn-to-turn shorts, insulation defects, and inductance deviations in coil -
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120kV-2mA DC High Voltage GeneratorThe MOEORW-W3505C(120kV-2mA) DC high voltage generator for turn-to-turn insulation test, closed-loop PWM regulation, ultra-low ripple (≤0.5%), solid-state sealed design. Supports 75% arrester one-key -
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25kA Impulse Current GeneratorThe Wuhan Moen Intelligent MOEORW-W320-25kA Impulse Current Test System is designed for indoor high-voltage testing. It has a rated impulse current of 25kA and is compatible with national/IEC -
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![Turn-to-Turn Surge Withstand Tester]()
Turn-to-Turn Surge Withstand TesterTurn-to-turn Insulation breakdown Three-channel synchronous testing, four judgment methods to quantify waveforms, accurately identifying problems such as inter-turn short circuits and poor insulation. -
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5kV Turn-to-turn Impulse Withstand Voltage TesterMEZJ-W5A Turn-to-Turn Impulse Withstand Voltage Tester employs the impulse waveform comparison method, supporting both multi-connection and single-phase winding tests to accurately diagnose various
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.
An interturn impulse withstand voltage tester is an instrument used to test the ability of the insulation in electrical equipment to withstand high voltage impulses between adjacent turns of a winding. This is important in applications such as transformers, motors, and generators, where the insulation between winding turns must be able to withstand the high voltage stress that occurs during normal operation.The interturn impulse withstand voltage tester applies a high voltage impulse between adjacent turns of a winding and measures the resulting current. If the insulation between the turns is insufficient, the current will be high and may lead to insulation breakdown or other damage.
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Pulse peak voltage |
500 to 5000 V (100 V increments) |
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Pulse capacitance |
0.01 μF |
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Rise time |
0.5 μs |
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Test accuracy |
< 5% (1kV–5kV) |
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LCD display |
Resolution;320×240; 5.1 inches; blue background with white text |
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Power consumption |
90 W |
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Power Supply |
AC 220V ±10%, 50Hz |
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Ambient Temperature |
0°C to 40°C |
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Relative Humidity |
≤85% |
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Dimensions |
380(W) × 190(H) × 470(D) mm |
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Weight |
12.25 kg |
Advantages of Turn-to-Turn Surge Withstand Tester
The tester can detect any weak spots or defects in the insulation of electrical equipment, which could lead to breakdowns or electrical faults. This allows for preemptive maintenance and repairs, preventing potentially dangerous and costly failures.
Interturn impulse withstand voltage testers have a high level of accuracy in detecting insulation weaknesses, making them a reliable tool for testing the integrity of electrical insulation.
The tester is easy to operate and does not require extensive technical knowledge. This makes it a valuable tool for technicians and engineers who need to test electrical equipment.
Testing with an interturn impulse withstand voltage tester is quick and efficient, taking only a few minutes to complete. This allows for more frequent and thorough testing, ensuring that electrical equipment is always in good condition.
The tester uses non-destructive testing methods, which means that it does not cause any damage to the equipment being tested. This is particularly important when testing high-voltage electrical equipment, as it can be dangerous to perform tests that could damage the equipment.
Types of 5kV Turn-to-turn Impulse Withstand Voltage Tester
Standard Lightning Impulse Tester
Simulates high-energy surges caused by natural lightning strikes, featuring a rapid rise time (1.2 µs) and short decay (50 µs) — commonly referred to as the 1.2/50 µs waveform.
Switching Impulse Tester
Generates longer-duration surges (typically 250/2500 µs) that simulate voltage transients from circuit breaker operations, load shedding, or fault clearing in high-voltage grids.
Combined Impulse Tester
Integrates both lightning and switching impulse capabilities into a single, versatile system, allowing sequential or independent testing modes within one setup.
Full Wave Rectified Impulse Tester
Produces an impulse waveform resembling the output of a full-wave rectified AC source, used to assess components in DC power systems and power electronics.
Damped Oscillatory Impulse Tester
Generates a rapidly decaying sinusoidal waveform that replicates transient oscillations caused by faults, resonance, or switching in inductive-capacitive circuits.
Applications of 5kV Turn-to-turn Impulse Withstand Voltage Tester
Utility and Power Distribution
Electric utility companies rely heavily on high voltage testers to maintain the reliability and safety of power generation, transmission, and distribution networks. These testers are used to evaluate the insulation strength of critical infrastructure components such as transformers, high-voltage cables, switchgear, and circuit breakers.
Manufacturing of Electrical Equipment
In the production of motors, generators, capacitors, and other electrical machinery, impulse testers are integral to quality assurance processes. Manufacturers perform impulse testing during final inspection to verify that insulation materials can withstand voltage spikes encountered during operation.
Telecommunications
Telecom infrastructure—Including satellite communication systems, fiber-optic networks, and long-distance transmission lines—Is vulnerable to voltage surges from lightning and electromagnetic interference. Impulse testers are used to assess the insulation integrity of high-voltage cabling, repeaters, and signal processing units.
Aerospace and Defense
The aerospace and defense sectors use impulse testers to validate the performance and safety of avionics, radar systems, navigation equipment, and onboard power systems. These components must operate reliably under extreme conditions, including rapid altitude changes and electromagnetic stress.
Testing and Certification Laboratories
Independent and accredited laboratories use impulse testers to conduct third-party evaluations of electrical products for safety, durability, and regulatory compliance.
Renewable Energy Sector
While not originally listed, the renewable energy industry—Including wind, solar, and energy storage systems—Increasingly relies on impulse testing to ensure the reliability of inverters, transformers, and grid interconnection equipment.
How to Use Turn-to-Turn Surge Withstand Tester
Equipment wiring
First, ground the ground wire grounding network and the interturn impact voltage tester, and connect the two parts of the impact voltage tester in the direction of the arrow with the connecting wire and fasten the lock. Then the high-voltage test line is connected to the tester and the subject, the foot switch is connected to the control end part of the tester, and finally the power line part of the tester is connected.
Test demonstration
After the instrument power supply is turned on, first preheat the instrument for five minutes and observe whether the work indicator light is on. If it is not on, press the phase change button to wake up the indicator light. When the work indicator light is on, press the foot switch and adjust the high voltage knob to 2kV. After the judgment is completed, release the foot switch to adjust the high pressure knob to reduce the pressure.
Waveform analysis
Different subjects are compared with the same operation method. If the waveform does not coincide, it indicates that the subject is unqualified, and the waveform of the short-circuit subject is often a straight line; The waveform of the short circuit between turns is slightly lower than that of the standard subject.
How to Test for Power Surges
Determine the applicable standards and specifications for the power supply, including the required surge voltage levels, waveforms, and test criteria.
Set up the test equipment, including the surge generator and any necessary coupling networks, as specified in the relevant standards. Ensure the generator can produce the required voltage and current waveforms.
Connect the power supply to the surge generator, ensuring proper grounding and isolation to prevent damage to test equipment. Use appropriate coupling networks to apply surges to different ports and terminals as required.
Apply the specified surge pulses to the power supply, typically at different voltage levels and between various combinations of input and output terminals. Ensure the proper surge close time is used between pulses to allow for adequate recovery.
Monitor the power supply’s performance during and after the surge test, looking for any signs of malfunction, such as output voltage fluctuations, tripping of protection circuits, or complete failure. Use oscilloscopes and other measurement equipment as necessary to capture any transient events.
Record the test results and compare them against the specified pass or fail criteria to determine if the power supply meets the surge withstand requirements. Document any observed anomalies or failures for further analysis.
Maintenance
Routine Inspection
Examine probes, leads, and connectors for wear, fraying, or corrosion. Look for warning signs like intermittent readings or dim indicators.
Functional Testing
Verify operation using a known live source or dedicated test bench before each critical use.
Cleaning
Wipe down the exterior with a soft, dry cloth; use isopropyl alcohol for stubborn dirt. Avoid solvents that may degrade plastic or rubber components.
Calibration
Perform periodic calibration (typically annually or per organizational policy) to ensure measurement accuracy, especially in industrial or laboratory settings.
Basic Repairs
Replace worn probes or batteries promptly. Only qualified personnel should perform internal repairs to maintain safety certification.
Environmental Protection
Keep testers away from moisture, dust, and extreme temperatures. Use protective caps on probes when not in use.
Certificates
FAQ
As one of the most professional turn-to-turn tester manufacturers in China, we're featured by quality products and good price. Please rest assured to buy high quality turn-to-turn tester in stock here and get quotation from our factory. Customized orders are welcome.
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