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- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDZJ-35S (Ball Gap Switch) is a high-reliability, industrial-grade interturn insulation test instrument exclusively designed for harsh industrial environments and high-volume production lines. It fully complies with GB/T 22714-2008 and IEC 60034-15:2005, adopting the proven ball gap discharge switch technology instead of semiconductor switches, delivering extremely strong anti-electromagnetic interference capability, large output current, no warm-up required, excellent overload resistance, and long service life.
Equipped with dual independent high-voltage circuits and a 7-inch color touch screen, it supports simultaneous testing of two windings and real-time overlay display of impulse waveforms for direct visual comparison. The system automatically analyzes waveform similarity, provides clear pass/fail judgment, and stores all test data for traceability. With comprehensive safety protection including over-voltage, over-current, short-circuit, emergency stop, and door interlock, it ensures safe and stable operation 24/7 in electromagnetic interference-intensive workshops. Ideal for 100% quality control testing of 35kV and below AC/DC motors, power transformers, reactors, inductors, and current transformers.
Specifications
|
Parameter |
Specification |
|
Input Power |
Single-phase AC220V±10%, 50Hz |
|
Impulse Voltage Range |
0–35kV peak (continuous adjustable) |
|
Voltage Accuracy |
±5% F.S |
|
Pulse Energy |
60J |
|
Wavefront Time |
0.1–0.5μs (standard-compliant) |
|
Pulse Repetition Frequency |
6.25–50 times/second (adjustable) |
|
Switch Type |
High-precision adjustable ball gap discharge switch |
|
Test Circuits |
2 independent high-voltage output circuits |
|
Display |
7-inch color touch screen |
|
Waveform Comparison |
Real-time overlay display + automatic similarity calculation |
|
Test Modes |
Single test, Continuous test, Timed test |
|
Data Storage |
1000 groups (with time stamp) |
|
Data Export |
USB flash drive |
|
Protection Functions |
Over-voltage, Over-current, Short-circuit, Emergency stop, Door interlock, Automatic discharge |
|
Dimensions (mm) |
650×550×1700 (W×H×D) |
|
Weight |
~100kg |
|
Power Consumption |
≤1000VA |
|
Operating Temperature |
0℃ ~ +40℃ |
|
Operating Humidity |
≤80%RH (non-condensing) |
|
Compliance |
GB/T 22714-2008, JB/T 10098-2000, JB/T 9615.1-2000, IEC 60034-15:2005, IEC 61010-1 CAT III 1000V |
Applications
Core Test Objects
- Electric motors: 35kV and below AC induction motors, DC motors, servo motors (stator and rotor windings)
- Transformers: distribution transformers, power transformers, instrument transformers (CT/PT)
- Reactors & inductors: power reactors, filter inductors, choke coils
- Electrical appliances: contactors, relays, solenoid valves, ignition coils
- Generators: small and medium-sized synchronous generators, alternators
Typical Usage Scenarios
- High-volume production lines: 100% interturn insulation test of finished motors and transformers
- Motor repair workshops: post-overhaul insulation verification
- Substation maintenance: 35kV transformer and reactor winding inspection
- R&D laboratories: new product development and performance testing
- Third-party inspection: compliance testing according to national and international standards
Advantages
Ball Gap Switch Technology
Extremely strong anti-interference capability, no warm-up required, excellent overload resistance, long service life → stable and reliable operation 24/7 in harsh industrial environments
60J High Energy Output
Large output current；suitable for large-capacity and low-impedance windings → no under-testing, ensures accurate results
Standard-Compliant Impulse Waveform
0.1–0.5μs wavefront time meets all major national and international standards → ensures test result validity and comparability
Dual Circuit Synchronous Comparison
Eliminates need for reference coils；direct comparison of two windings → faster test speed and higher accuracy
Automatic Waveform Analysis & Judgment
Intelligent algorithm calculates waveform similarity；reduces human error and improves test efficiency → ideal for high-volume production lines
Comprehensive Safety Protection
Multiple protection layers + door interlock + automatic discharge → maximum safety for operators and test equipment
FAQ
Q: What is the difference between ball gap switch and semiconductor switch interturn testers?
A:
- Ball gap switch: Extremely strong anti-interference capability, no warm-up required, excellent overload resistance, long service life (>10 million discharges), suitable for harsh industrial environments and high-volume production lines
- Semiconductor switch: Smaller size, lower noise, more precise voltage control, suitable for laboratories and clean environments
Q: What products can GDZJ-35S (Ball Gap) test?
A: It can test all types of coil-based electrical equipment including 35kV and below AC/DC motors, distribution transformers, reactors, inductors, current transformers, relays, and ignition coils.
Q: Does the wavefront time meet international standards?
A: Yes. The wavefront time of 0.1–0.5μs fully complies with the requirements of GB/T 22714-2008 and IEC 60034-15:2005.
Q: Does it require a reference coil for testing?
A: No. The dual high-voltage circuit design allows direct comparison of two identical windings, eliminating the need for pre-prepared reference coils.
