Handheld Partial Discharge Tester
The ZWPD92 is a highly portable, Android-based diagnostic tool designed to detect and locate partial discharges in high-voltage equipment like GIS, switchgear, and transformers.
Weighing just 0.85kg, it offers a complete suite of sensors (TEV, Ultrasonic, UHF, and HFCT) for comprehensive, non-intrusive on-site evaluation.
Product Overview
The ZWPD92 Handheld Partial Discharge Tester is built for modern substation maintenance. Utilizing an integrated Android OS, it seamlessly merges acoustic and electrical detection technologies without requiring any equipment shutdowns.
Featuring a built-in 5-megapixel camera for site recording and RFID/Bluetooth capabilities, it offers a smart, all-in-one solution for evaluating insulation defects early and accurately.
Functions and Value:
1. Comprehensive Multi-Sensor Detection: Supports TEV, Ultrasonic (both contact and non-contact), UHF, and HFCT sensors. This versatile combination ensures you can inspect everything from sealed GIS units to open switchgear and grounding cables.
2. Advanced Analytical Modes: Features sophisticated data processing modes including WaveMode, PRPD (Phase Resolved Partial Discharge), PRPS (Phase Resolved Pulse Sequence), and PulseMode to accurately distinguish true PD signals from background noise.
3. Smart Android Operation: Navigating the device is as easy as using a smartphone. The 5.0-inch true-color touch screen provides real-time 2D and 3D graphs, while the built-in discharge type library helps engineers instantly verify complex fault conditions.
4. Non-Intrusive & Safe: All tests are conducted externally (non-invasive). There is absolutely no impact on the live operation of high-voltage equipment, ensuring both grid stability and operator safety.
5. Field-Ready Portability: Weighing only 0.85kg with a powerful built-in 4800mAh lithium battery offering up to 7 hours of operation, it drastically reduces operator fatigue during long substation patrol inspections.
6. Intelligent Data & Reporting: Equipped with RFID for IoT integration, a 5MP camera for visual logging, and a Type-C USB port to effortlessly export data to the PC software for professional inspection report generation.
Technical Details
| Parameter | Specification |
|---|---|
| Model | ZWPD92 |
| Measurement Channels | Measurement Channels |
| TEV Detection | 3MHz-100MHz range, 0-60dB measuring range |
| Ultrasonic (US) Detection | Non-Contact (40kHz center) / Contact (20kHz-300kHz) |
| UHF Detection (Optional) | 300MHz-1.5GHz range, sensitivity less than -60dBm |
| HFCT Detection (Optional) | 100kHz-50MHz range, -20~80dB measuring range |
| Display | 5.0-inch TFT true color LCD touch screen |
| Working System | Android OS |
| Data Interfaces | USB Type-C, Bluetooth, WIFI, RFID, 5MP Camera |
| Synchronization | External, Internal, Light synchronization |
| Power Supply | Built-in 4800mAh 7.4V battery (Approx. 7 hours working time) |
| Dimension & Weight | 180mm x 110mm x 40mm ; 0.85 kg |
Model Selection Guide
| Feature | ZW5320 | ZW8320 |
|---|---|---|
| Max Output Current | 20A | 20A |
| Max Resistance Range | Up to 200Ω | Up to 25kΩ (Includes 10mA, <1mA steps) |
| 3-Phase Auto Test | Supported | Supported |
| Auto Degaussing | Supported | Supported |
| Magnetic Assist | Not available | Supported |
| Best Application | Standard distribution & medium power transformers. | Large power transformers requiring rapid LV winding tests. |
Recent Work
Parts List
| Item NO. | Max Current | Measuring Range | Main Features | Recommended Application |
|---|---|---|---|---|
| GDZR-10A | 10A | 100μΩ - 20KΩ | Portable, built-in discharge alarm | Small to medium distribution transformers |
| GDZR-20A | 20A | 10μΩ - 10KΩ | High-speed testing, heat dissipation | Medium-sized power transformers |
| GDZR-40A | 40A | 1μΩ - 2KΩ | Dual-channel measurement, high current | Large-scale power transformers |
| GDZR-40A | Three-Phase 10A | 100μΩ - 10KΩ | Three-phase simultaneous measurement | Yn-type transformers, time-saving |
Product Video
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Certificate
Frequently Asked Questions
Contact our engineers for technical support and application guidance.
For standard metal-clad switchgear, a combination of TEV (Transient Earth Voltage) and Ultrasonic (US) sensors is highly recommended. TEV detects internal electromagnetic emissions on the metal casing, while US detects acoustic signals from surface or gap discharges.
No. The ZWPD92 is a completely non-invasive, live-testing device. Sensors are placed on the exterior metal casing of the equipment or clamped over grounding cables (using HFCT), allowing you to perform safe inspections without interrupting the power supply.
PRPD (Phase Resolved Partial Discharge) is a 2D map showing the relationship between discharge amplitude and power frequency phase. PRPS (Phase Resolved Pulse Sequence) is a 3D visualization adding the “time” axis. Both modes are critical for distinguishing true PD from environmental noise and identifying the exact type of defect (e.g., corona, particle, or void discharge).
The device stores testing data, extreme values, and even site photos via its built-in Android system. You can easily export this database using the included Type-C USB cable to our dedicated PC software, which automatically edits and generates detailed inspection reports.
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