Full-Function Turn-to-Turn Surge Withstand Tester

The inter-turn impulse withstand voltage tester (i.e., digital inter-turn tester ) can efficiently and non-destructively perform electrical tests on components with coil windings. Its principle is to apply the same pulse voltage to a standard coil winding and the winding under test, comparing their transient waveforms to test the quality of the coil under test. The transient waveform is the waveform of damped oscillations occurring within the coil . It can simultaneously determine the inductance, quality factor, difference in the number of turns, and inter-turn short circuit conditions of the winding. In the case of an iron core, it can also determine differences in its material. Under the application of a high-voltage pulse, the occurrence of corona discharge can also indicate poor insulation. In short, all the elements indicating coil quality can be checked in a very short time.

Our MOEORW-GZ series inter-turn impact withstand voltage tester uses microcomputer technology to quantify various parameters of the waveform, and then displays and judges them intuitively. It is simple to operate, accurate in judgment, and highly automated. The instrument is small in size, lightweight, and easy to carry.

I. Core Functional Features

• Non-destructive testing: Enables efficient and non-destructive electrical testing of coil winding components.
• Waveform comparison technology: Applying the same pulse voltage to the standard coil and the winding under test, and judging the quality by comparing the transient waveforms.
• Multi-parameter comprehensive judgment: It can simultaneously judge inductance, quality factor, turn count difference, inter-turn short circuit and insulation failure, etc.
• Corona discharge detection: Applying a high-voltage pulse can help identify insulation problems.
   

II. Detection and Judgment Mode
Judgment Method Function Description

• Waveform area comparison: Compare the waveform area of the standard coil and the measured coil within a specified range.
• Comparison of waveform area: The difference between the area of the waveform deviation portion and the standard area.
• Waveform corona measurement is used to detect the high-frequency components in corona discharge spikes to determine insulation performance.
• The waveform phase comparison compares the oscillation period (zero crossing point), with a focus on checking the inductance L value.
• The four modes can be used in combination or individually, and the judgment threshold can be set arbitrarily.
   

III. Test Mode

• Standard coil testing mode: Single winding coil quality inspection
• Quick Test Mode: Suitable for ordinary coils and three-phase motors, quickly detects faults.
• Multi-winding test mode: Supports automatic or manual switching testing of single-phase motors (2-4 windings) and three-phase motors (star/delta).
• External control mode: RS232 multi-winding, PC control
• Foot control mode: Controlled by a foot switch, freeing up your hands.
   

IV. Ease of Operation
5.1-inch LCD screen (320×240 resolution) for intuitive display of waveforms and parameters.

With the ability to store 100 waveforms and parameters, it facilitates batch product management.

• Rapid detection function: 7 winding test modes (ABC/AB/AC/BC/A/B/C), continuous pulse output, quickly locate the fault point.
• Multiple triggering methods: manual control, foot control, PC control
• Sound prompts: Selectable options are: acceptable sound / unacceptable sound / silent.
   

V. Interfaces and Extensions

• HANDLER sorting interface: Outputs test results (pass/fail), supporting automated production line sorting.
• RS232C communication interface: Connects to a PC, enabling data transmission and remote control.
• External multi-channel converter support: adapts to three-phase/single-phase motor testing
   

VI. Safety and Reliability

• High voltage indicator and status indicator: Real-time display of test status
• Multi-level safety protection: Good grounding requirements; do not touch the test terminal before the test stop light illuminates.
• Highly adaptable to various environments: suitable for temperatures ranging from 20℃ to 30℃ and humidity levels from 20% to 80% RH.
• Small in size and light in weight (approximately 10kg), making it easy to carry.

I. Coil Winding Production Inspection

• Motor winding manufacturers: Conduct batch quality screening of coils before they leave the factory.
• Transformer coil manufacturing: Detection of inter-turn short circuits and poor interlayer insulation
• Inductor manufacturing: Judging the consistency of inductance and Q value

II. Motor Repair and Testing

• Three-phase motor repair: Checking the balance of the three-phase windings and quickly identifying faulty phases.
• Single-phase motor repair: Testing the main winding and auxiliary winding separately.
• Power tool motor troubleshooting: Identifying inter-turn short circuits and insulation aging

III. Home Appliance and Electronic Product Manufacturing

• Air conditioner/refrigerator compressor motor: Incoming and outgoing quality inspection
• Washing machine motor: Winding quality inspection
• Fan motors: rapid batch screening
• Voice coil: Polarity test (optional function)

IV. Auto Parts Industry

• Automotive alternator windings: Testing for inter-turn short circuits and insulation performance
• Starter armature: interlayer insulation test
• Car window motors and wiper motors: Quality control of small motor windings

V. On-site inspection and rapid fault location

• On-site equipment maintenance: Portable design, easy to carry to the site.
• Rapid detection mode: Continuous pulse output for quick location of short circuits or insulation faults.
• Motor fault diagnosis: Determine if the equipment malfunction is caused by a winding problem.

VI. Scientific Research and Teaching

• University Electrical Engineering Laboratory: Demonstration of the Principle of Inter-turn Short Circuit Test for Coils
• Vocational and technical training: Motor repair training equipment
• Research and Development Testing: Verification of New Product Winding Design

VII. Automated Production Line Integration

• Online inspection on the production line: HANDLER sorting interface, automatically outputs pass/fail signals.
• PC remote control: RS232 communication enables unmanned testing.
• Automatic multi-winding switching: Supports automatic testing of winding sequence for three-phase/single-phase motors.