EN
GDZJ-5S Inter-Turn Withstand Voltage Tester | Surge Voltage Generator
GDZJ-5S Digital Inter-Turn Surge Withstand Voltage Tester with Pulse Waveform Comparison Method, 500-5000V Adjustable, Built-in Oscilloscope Display, for Motor Winding Inter-Turn Insulation Strength Test
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
GDZJ-5S is a professional desktop inter-turn surge withstand voltage tester designed for inter-turn and layer-to-layer insulation strength test of coil windings in single-phase/three-phase motors, micro motors, special motors, power tools, transformers, relays and other electromagnetic winding products. It strictly complies with IEC 60034-1:2017, GB/T 755-2019 and GB 14711-2013 standards, adopting the standard pulse waveform comparison method to apply equivalent overvoltage impulse to windings, and judge insulation quality by comparing the attenuation oscillation waveforms of tested windings.
The instrument features 500V~5000V continuously adjustable peak output and 0.2μs / 0.5μs fast front rise time, which truly simulates the overvoltage stress suffered by windings in actual operation. It is equipped with a built-in CRT oscilloscope display and a digital peak voltmeter, supporting continuous adjustment of Y-axis amplitude and X-axis scanning rate, so that operators can intuitively observe and compare waveform differences. It can accurately identify various winding faults such as inter-turn short circuit, corona discharge, local short circuit, wrong wiring, turn number difference and winding disconnection.
Specifications
| Parameter | Specification |
|---|---|
| Compliance Standards | IEC 60034-1:2017, GB/T 755-2019, GB 14711-2013, JB/T 9615.1-2017 |
| Test Principle | Pulse waveform comparison method |
| Peak Output Voltage | 500V ~ 5000V AC, continuously adjustable |
| Peak Voltage Accuracy | ≤5% (1kV ~ 5kV range) |
| Waveform Rise Time | 0.2μs or 0.5μs (optional) |
| Test Objects | Single-phase/three-phase motors, transformers, relays and other winding products |
| Detectable Faults | Inter-turn short circuit, corona discharge, wrong wiring, turn difference, winding disconnection, local short circuit |
| Display Mode | Built-in CRT oscilloscope + digital peak voltmeter |
| Waveform Adjustment | Y-axis amplitude, X-axis scanning rate, focus, brightness continuously adjustable |
| Phase Switching | Three-phase phase switching function |
| Control Mode | Panel button + foot switch control |
| Input Power | AC 220V±10%, 50Hz |
| Power Consumption | ≤100W |
| Protection Functions | Zero-start protection, dual fuse protection, overheat protection |
| Cooling Method | Built-in axial fan forced cooling |
| Operating Temperature | 0℃ ~ +40℃ |
| Humidity | ≤85% RH (non-condensing) |
| Dimensions (L×W×H) | 480 × 260 × 390mm |
| Weight | ~24kg |
| Enclosure | Cold-rolled steel spray desktop chassis |
Applications
Core Test Objects
- Motor windings: Single-phase motors, three-phase small and medium motors, micro motors, special motors, power tool motors
- Transformer windings: Power transformers, switching power transformers, pulse transformers
- Other winding devices: Relays, contactors, solenoid valves, inductors and other products with electromagnetic wire windings
Typical Usage Scenarios
- Motor manufacturers: Production line incoming inspection of enameled wire, finished motor inter-turn insulation test, repair workshop fault diagnosis
- Transformer factories: Winding layer-to-layer insulation test, finished product quality control
- Electrical appliance factories: Power tools, household electrical appliances motor batch test
- Third-party testing institutions: Electrical product insulation performance certification and inspection
- Maintenance workshops: Motor winding rewinding quality verification, fault detection and analysis
Advantages
Compliance with International & National Standards
Fully meets IEC 60034-1, GB/T 755, GB 14711 → test results comply with motor and transformer product quality standards
Standard Pulse Waveform Comparison Principle
Consistent with international general test methods, simulates actual overvoltage stress → test results are authoritative and comparable
0.2μs Ultra-Fast Rise Time
Truly restores the steep wave impact suffered by windings in operation → effectively finds weak points of inter-turn insulation
Intuitive Waveform Comparison Judgment
Built-in oscilloscope + digital voltmeter dual display → faults are clear at a glance, reduces operator skill requirements
Comprehensive Fault Identification Capability
One test detects multiple faults such as short circuit, wrong wiring and turn difference → improves test efficiency by 300%
Foot Switch Control & Simple Operation
Hands-free operation, no complex settings → suitable for batch testing on production lines, reduces labor intensity
Cost-Effective Desktop Design
Stable performance, low failure rate, affordable price → ideal choice for small and medium-sized factories and repair workshops
FAQ
Q: How does the pulse waveform comparison method judge inter-turn insulation faults?
A: The instrument outputs a standard high-voltage pulse to the tested winding, which generates a damped oscillation waveform on the winding. If the winding has inter-turn short circuit, the oscillation frequency, amplitude and attenuation speed of the waveform will change significantly. By comparing the waveform of the tested winding with the standard good winding waveform, we can intuitively and quickly judge whether there is an insulation fault.
Q: What is the significance of 0.2μs fast rise time?
A: In actual operation, motor windings often suffer from steep wave overvoltage caused by lightning strikes and switching operations, with a very fast front rise time. The 0.2μs fast rise time of the instrument can truly simulate this working condition, effectively find the weak points of inter-turn insulation that cannot be detected by power frequency withstand voltage test, and avoid early insulation failure of motors in actual use.
Q: Can GDZJ-5S test three-phase motors?
A: Yes. The instrument is equipped with a three-phase phase switching function. After one wiring, the test of three-phase windings can be completed by switching phases, which is convenient for comparing the consistency of three-phase winding waveforms and finding phase-to-phase differences and faults.
Q: Is this instrument suitable for production line batch testing?
A: Yes. GDZJ-5S is designed for both laboratory and production line use. It supports foot switch control, simple operation, fast test speed, stable performance and low failure rate, which can fully meet the needs of batch testing on the production line. At the same time, the waveform comparison method is intuitive and easy to judge, which reduces the skill requirements for operators.
