Applicable to the power equipment field test special high-voltage generating equipment
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ZGF series Series dc high voltage generators adopts high frequency voltage doubler circuit, adopts advanced PWM high frequency pulse width modulation technology, closed loop adjustment, and adopts large voltage feedback, which greatly improves voltage stability. Use high-power IGBT devices and drive technology with superior performance, and adopt special shielding, isolation and grounding measures according to electromagnetic compatibility theory. The Series dc high voltage generators are made of high quality, portable, and capable of withstanding rated voltage discharge without damage. It has the characteristics of large output power and small volume, reliable over-voltage, over-current and zero-closing protection, with 0.75 times voltage switching function. It is mainly used in the power sector, industrial and mining, metallurgy, steel and other enterprise power departments to conduct DC withstand voltage test or DC leakage current test on high-voltage electrical equipment such as zinc oxide surge arresters, power cables, transformers, circuit breakers and generators.
Product nickname: High voltage generator, dc high voltage generators, Portable Series dc high voltage generators, zgf Series dc high voltage generators, Power frequency high voltage generator, High voltage generator Series dc high voltage generators
| Specifications | 200/2 | 200/3 | 200/5 | 300/2 | 300/3 | 300/5 | 400/2 | 400/3 | 400/5 |
| Rated voltage(kV) | 200 | 200 | 200 | 300 | 300 | 300 | 400 | 400 | 400 |
| Rated current(mA) | 2 | 3 | 5 | 2 | 3 | 5 | 2 | 3 | 5 |
| rated power(W) | 400 | 600 | 1000 | 600 | 900 | 1500 | 800 | 1200 | 2000 |
| Control box quality(kg) | 5.5 | 6.0 | 6.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.8 |
| Pressure cylinder quality(kg) | 8.7 | 9 | 9 | 24 | 24 | 24.5 | 33.5 | 33.5 | 33.5 |
| Double cylinder height(mm) | 970 | 970 | 970 | 1250 | 1250 | 1250 | 1650 | 1650 | 1650 |
| Voltage accuracy | ±(1.0%Reading + 2 words) | ||||||||
| Current accuracy | ±(1.0%Reading + 2 words) | ||||||||
| Ripple coefficient | ≤0.5% | ||||||||
| Voltage stability | When the power supply voltage changes by ±10%≤1% | ||||||||
| Overload capability | No-load voltage can exceed 10% of rated voltage for 10 minutes | ||||||||
| The maximum charging current is 1.25 times the rated current | |||||||||
| power supply | Single phase communication 50Hz 220V±10% | ||||||||
| Way of working | Intermittent use: rated load 30 minutes | ||||||||
| 1.1 times rated voltage usage: 10 minutes | |||||||||
| Way of working | temperature：-10℃～+40℃ | ||||||||
| Relative humidity: no more than 85% at room temperature of 25 °C (no condensation) | |||||||||
| Altitude: below 1500 meters | |||||||||
| With capacitive load capacity | The tested product has unlimited capacity | ||||||||
| Charged with 1.5 times rated current | |||||||||
| Structural features | Electrical insulation doubler | ||||||||
| Air insulation, no leakage | |||||||||
| Operating box features | High-precision 0.75UDC1mA one-touch button (accuracy ≤1.0%), suitable for zinc oxide lightning arrester test | ||||||||
| Overvoltage protection using digital dial switch, at a glance | |||||||||
| Portable chassis, more convenient on site | |||||||||
1. The appearance of the product is subject to the actual product. The Technical Parameters and model numbers are subject to change without notice. If there is misappropriation or copying, legal liability will be pursued.
2. For more information about Wuhan UHV, please enter product center . Service email：info@hvtest.cc
| Rated voltage of lightning arrester kV | 10 | 35 | 66 | 110 | 220 |
| DC reference voltage kV | 28 | 90 | 135 | 168 | 314 |
| Equipment selection kV/mA | ZGF - 60/2 | ZGF - 120/2 | ZGF - 200/2 | ZGF - 200/2 | ZGF - 400/3 |
| Substation voltage levels kV | 10 | 35 | 66 | 110 | 220 | 330 |
| Maximum test voltage kV | 47 | 105 | 135 | 192 | 305 | Over 400 |
| Equipment selection kV/mA | ZGF - 60/2 | ZGF - 120/2 | ZGF - 200/2 | ZGF - 200/2 | ZGF - 400/3 | ZGF - 800/10 |
| Maintenance and testing level | Level 5 | Level 4 | Level 3 | Level 2 | Level 1 |
| Maximum test voltage kV | 28 | 90 | 168 | 305 | Over 400 |
| Equipment selection kV/mA | ZGF - 60/2 | ZGF - 120/2 | ZGF - 200/2 | ZGF - 400/3 | ZGF - 800/10 |
| Rated voltage of cable Uo/U kV | 3.6/6 | 6/6 | 6/10 | 8.7/10 | 21/35 | 26/35 |
| DC test voltage kV | 17 | 30 | 40 | 47 | 105 | 130 |
| Equipment selection kV/mA | ZGF - 60/2 | ZGF - 60/2 | ZGF - 60/2 | ZGF - 60/2 | ZGF - 120/3 | ZGF - 200/5 |
| Rated voltage of cable Uo/U kV | 6/10 | 8.7/10 | 21/35 | 26/35 | 48/66 | 64/110 | 127/220 |
| DC test voltage kV | 26 | 37 | 63 | 78 | 144 | 192 | 305 |
| Equipment selection kV/mA | ZGF - 60/2 | ZGF - 60/2 | ZGF - 120/5 | ZGF - 120/5 | ZGF - 200/5 | ZGF - 200/10 | ZGF - 400/5 |
| Rated voltage of cable Uo/U kV | 48/66 | 64/110 | 127/220 | 190/330 | 290/500 |
| DC test voltage kV | 175 | 275 | 475 | 585 | 775 |
| Equipment selection kV/mA | ZGF - 200/3 | ZGF - 300/3 | ZGF - 500/5 | ZGF - 600/5 | ZGF - 800/10 |
1、 Series dc high voltage generators have small ripple coefficient, stable and reliable voltage output, no noise, and good reliability
2、 with overvoltage, overcurrent, zero voltage start and fault protection, voltage protection value can be set, display intuitive
3、 voltage, current using digital display, and power supply has a reading, easy to monitor the output status
4、 with 0.75 times voltage conversion, easy to test zinc oxide arrester
5、 the product structure is compact, small size, easy to carry
1、Portability: Its compact, modular design with a relatively lightweight control box and pressure cylinder makes it far easier to transport and maneuver in field environments compared to heavy AC test transformers.
2、Ease of Use: Features like digital displays, a simple 0.75U button, and a clear overvoltage setting dial make the instrument intuitive to operate, reducing the potential for operator error.
3、Inherently Safer for Certain Tests: As a DC source, it is the preferred method for leakage current testing and for performing withstand tests on oil-paper insulated (PILC) cables and cable outer sheaths where AC testing is not suitable or practical.
4、Reliable Protection: The built-in overvoltage, overcurrent, and zero-start protection ensure the safety of the equipment and operator during testing.
5、Cost-Effective: For its primary applications, the ZGF tester offers a high-performance, portable, and cost-effective solution compared to more complex AC resonant systems.
1、DC Withstand and Leakage Current Testing of Power Cables: It is used for testing oil-paper insulated (PILC) cables, as well as rubber and plastic insulated cables (including XLPE for specific applications, though AC is often preferred). The product provides detailed selection tables for cables up to 290/500kV.
2、Testing of Zinc Oxide Lightning Arresters: The 0.75U function is specifically designed to measure the leakage current at the reference voltage (U1mA) of zinc oxide arresters, a key diagnostic for their condition.
3、Testing of Other High-Voltage Equipment: It can also be used for DC withstand and leakage current tests on transformers, circuit breakers, and generators.
4、Substation Maintenance: It is used for routine maintenance and fault diagnosis on equipment in substations of various voltage levels (10kV up to 330kV and above), as indicated by the selection charts.
5、Industrial Applications: The tester is suitable for power departments in industrial sectors such as mining, metallurgy, and steel.
Enterprise products in strict accordance with international and national standards and rules of industry production, through the national, provincial and municipal electric power research institute and electric power authorities detection, measuring center, fully passed the ISO9001 international quality management system certification, the licence for manufacturing measuring instruments of the People's Republic of China, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, GB/T45001-2020 occupational health and safety management system requirements.
email： info@hvtest.cc
Skype： Tina Qiao
+8615172408058
