ZGF Series DC Hipot Tester
The ZGF Series DC Hipot Tester utilizes advanced PWM technology and closed-loop feedback to deliver highly stable DC voltage with minimal ripple.
Equipped with a dedicated 0.75U one-key button, it is the standard instrument for testing zinc oxide surge arresters and power cables.
Product Overview
The ZGF Series DC Hipot Tester (DC High Voltage Generator) is precisely engineered to provide a stable, high-voltage direct current source for insulation diagnostics. It is extensively used in power utilities, metallurgy, and mining industries to perform DC withstand voltage and leakage current tests on critical high-voltage electrical equipment, including power cables, generators, and transformers.
Functions and Value:
1. Dedicated MOA Test: Features a smart 0.75U/1mA button specifically designed for rapid and accurate zinc oxide surge arrester (MOA) assessments.
2. Exceptional Stability: Utilizes high-frequency PWM and double closed-loop feedback for smooth voltage regulation and extremely low ripple (≤ 0.5%).
3. Fast-Action Protection: Built with nanosecond-level sensors for instantaneous over-voltage, over-current, breakdown, and zero-position start protection.
4. Integrated & Portable Design: Employs imported high-power IGBT devices to minimize the weight and volume of the control host and insulating cylinder.
5. Direct Digital Display: Direct load voltage and current readings on the host dashboard completely eliminate the need for external voltage dividers.
Technical Details
| Parameter | Specification |
|---|---|
| Model | ZGF Series |
| Rated Voltage | 60kV, 120kV |
| Rated Current | 2mA, 3mA, 5mA |
| Output Voltage Accuracy | ±(1.0% + 2 digits) |
| Output Current Accuracy | ±(1.0% + 2 digits) |
| Ripple Coefficient | ≤ 0.5% |
| Overload Capacity | 1.1 times max voltage for 10 min (No-load) |
| Power Supply | AC 220V ±10%, 50Hz |
| Operating Temperature | -10°C to +40°C |
Model Selection Guide
| Model | Rated Voltage | Rated Current | Rated Power |
|---|---|---|---|
| ZGF-60/2 | 60kV | 2mA | 120W |
| ZGF-60/5 | 60kV | 5mA | 300W |
| ZGF-120/2 | 120kV | 2mA | 240W |
| ZGF-120/5 | 120kV | 5mA | 600W |
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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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Frequently Asked Questions
Contact our engineers for technical support and application guidance.
This intelligent button is specifically designed for testing zinc oxide surge arresters. When pressed, it automatically drops the output voltage to exactly 75% of the original DC 1mA reference voltage, keeping it stable so you can easily read the leakage current.
No. The main host’s digital voltmeter directly displays the true high voltage value applied to the load, making on-site wiring and operation incredibly straightforward and reducing equipment clutter.
For paramount safety, the internal software requires the voltage adjustment potentiometer to be returned to the absolute zero position before the high-voltage circuit can be engaged. This definitively prevents sudden high-voltage shock to the test object upon startup.
Yes, it is fully capable of testing cables. However, a current-limiting resistor must be connected in series during the test, and operators must use a specialized 100 ohm/V discharge rod to safely release the residual charge after testing.
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