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The PS-ZD20T Three-Phase Winding Resistance Tester is a high-precision diagnostic instrument engineered for the rigorous demands of power electrical equipment maintenance. Specifically designed for measuring the DC resistance of transformer windings, generators, and motors, this device ensures optimal electrical stability and safety by providing ultra-accurate resistance readings with minimal margin of error.
Combining a user-friendly colorful lattice LCD interface with versatile measurement modes, the PS-ZD20T supports both three-channel and single-channel testing. With its integrated data management capabilities, including USB and RS232 interfaces, it streamlines the process of recording and analyzing winding resistance, making it an indispensable tool for electrical engineers and power plant technicians.
Detailed Parameters
| Output Current | Automatic Selection (Max 20 A) | Measurement Range | 0-100 Ω |
|---|---|---|---|
| Accuracy Class | ±(0.2% + 2 words) | Minimum Resolution | 0.1 μΩ |
| Working Temperature | -20 to 40℃ | Ambient Humidity | ≤80%RH (Non-condensing) |
| Operating Altitude | ≤1000 meters | Power Supply | AC 220 V ±10%, 60 Hz ±1 Hz |
| Physical Dimensions | L 400mm W 340mm H 195mm | Net Weight | 8kg |
Key Advantages
High Precision
Achieve professional-grade accuracy of ±(0.2%+2 words) with a resolution down to 0.1 μΩ for precise fault detection.
Auto Current Selection
Intelligent automatic current adjustment up to 20A optimizes testing speed and accuracy across different loads.
Flexible Measurement
Supports both three-channel (Ia, Ib, Ic) and single-channel modes to accommodate various equipment configurations.
Intuitive Visuals
Equipped with a colorful lattice LCD that displays menus, real-time test data, and historical records clearly.
Enhanced Connectivity
Seamless data transfer via USB and RS232 interfaces for easy integration with host computers and storage.
Integrated Printing
Built-in printer allows for immediate hard-copy documentation of resistance values and test currents on-site.
Product Gallery
Management Platforms
Data Storage
Utilize the USB interface to export test logs for long-term digital archiving and trend analysis.
PC Integration
Connect via RS232 to a host computer for advanced data processing and remote monitoring.
Real-time Alerts
Immediate visual feedback on the LCD screen alerts operators to anomalies during the testing process.
Safety Grounding
Dedicated earthing rod ensures casing protection and operator safety in high-voltage environments.
Field Reporting
Direct printing of resistance results eliminates manual transcription errors during field audits.
Operational Control
Specialized function buttons allow for rapid navigation between menus and initial state resets.
Investment Return Comparison
| Feature | Standard Tester | PS-ZD20T Advanced |
|---|---|---|
| Measurement Speed | Manual Setup | Auto-Current Selection |
| Data Handling | Manual Logging | USB/RS232 Digital Export |
| Resolution | Milliohm Level | Microohm (0.1 μΩ) Level |
| Documentation | Handwritten Notes | Integrated Thermal Printer |
| Operational Cost | High Maintenance | Low Downtime / High Reliability |
Frequently Asked Questions
It is primarily used for measuring the DC winding resistance of three-phase transformers, power generators, and large electric motors to ensure winding integrity and balance.
Yes, the device features automatic current selection with a maximum output of 20A, ensuring the most accurate reading based on the resistance of the object under test.
The PS-ZD20T provides three ways to handle data: through a built-in printer for instant reports, a USB interface for file transfers, and an RS232 port for PC communication.
The instrument offers a high accuracy of ±(0.2%+2 words) and an exceptional minimum resolution of 0.1 μΩ, making it suitable for detecting minute deviations in windings.
It is designed to work in temperatures ranging from -20 to 40℃, humidity levels up to 80% (non-condensing), and altitudes up to 1000 meters.
The device includes a built-in 5A protective tube in the AC power plug and a dedicated earthing rod to protect the casing and the operator from electrical hazards.
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