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- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDZJ-35S is a cost-effective, high-precision interturn insulation test instrument designed for turn-to-turn insulation strength verification of coils and windings in 35kV and below electrical equipment. It fully complies with GB/T 22714-2008 and IEC 60034-15:2005, adopting the pulse waveform comparison method to apply equivalent overvoltage impulses to windings, enabling fast and accurate detection of interturn short circuits, partial discharges, wiring errors, coil imbalance, and other insulation defects.
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 operation in both production lines and maintenance workshops. Ideal for quality control, commissioning, and overhaul testing of AC/DC motors, distribution transformers, reactors, inductors, current transformers, and other coil-based electrical equipment.
Specifications
|
Parameter |
Specification |
|
Input Power |
Single-phase AC220V±10%, 50Hz |
|
Impulse Voltage Range |
0–35kV peak (continuous adjustable) |
|
Voltage Accuracy |
±5% F.S |
|
Wavefront Time |
0.1–0.5μs (standard-compliant) |
|
Pulse Energy |
30J |
|
Pulse Repetition Frequency |
6.25–50 times/second (adjustable) |
|
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) |
700×600×1600 (W×H×D) |
|
Weight |
~140kg |
|
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
- Production line quality control: 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
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
User-Friendly Touch Screen Interface
Intuitive graphical operation；one-click parameter recall → easy to use for non-professional technicians
FAQ
Q: What is the difference between GDZJ-35S and GDZJ-45S?
A: GDZJ-35S has a maximum output voltage of 35kV, suitable for 35kV and below electrical equipment；GDZJ-45S has a maximum output voltage of 45kV, suitable for 45kV and below equipment. Both have dual high-voltage circuits and automatic waveform comparison functions.
Q: What products can GDZJ-35S 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.
