High voltage DC generator

measurement accuracy 

New generation portable DC high-voltage generator. Mainly applicable to power departments, industrial and mining, metallurgy, steel and other enterprises for conducting DC withstand voltage tests on high-voltage electrical equipment such as zinc oxide lightning arresters, power cables, transformers, generators, and high-voltage switches.

(A) The low-voltage side adopts automatic shifting mode, with a total current of 1.0% (full scale) ± 2 words

(B) The high-voltage side is equipped with a fully shielded automatic shift high-precision microampere meter, which adopts a 4 1/2 digital display meter. The microampere meter display screen is connected to the metal shell through conductive glass, with excellent shielding performance. The range is 0-200-2000uA, and the accuracy is 1.0% ± 2 words

(C) Optional infrared transmission microampere meter and handheld infrared receiver. When the display of the high-voltage microampere meter cannot be clearly seen, the leakage current value at the high-voltage end can be directly read through the handheld infrared receiver.

Using computer control technology to control PWM pulse width modulation, measurement, protection, and display, the display screen adopts a large LCD display, displaying output voltage, leakage current, overvoltage setting value, timer, and Chinese alarm prompts, with backlight; Equipped with a timer, displayed on the display screen, and the timing time can be adjusted. When the timing time is almost over, there will be an audible alarm.

Working frequency: 40kHz, using closed-loop large feedback

Ripple coefficient: ≤ 0.5%

0.75 Function: When conducting zinc oxide lightning arrester tests, press the 0.75 function key, and the voltage will automatically drop to 75% with an accuracy of ≤ 1.0%.

The grounding wire of the test circuit must be in good contact, otherwise the machine will refuse to work and sound a prompt. If the test power supply is powered by a 1:1 isolation transformer or a portable small generator on site, please manually ground either end of the power supply, otherwise an audible alarm will sound. If there is no reliable ground wire on site, press the "75% UDC/1mA" button on the panel for 2-3 seconds to release the alarm, and the instrument can still work normally at this time.

Overvoltage setting error: ≤ 1.0%, software setting used

Voltage regulation accuracy: 0.1%

Voltage adjustment rate: When the power supply voltage changes within the range of 220V ± 10%, the fluctuation range of the output voltage does not exceed 1.0%

The ZGF2000 (200KV/2mA) series DC high-voltage generator adopts pulse width modulation (PWM) technology, IGBT, and advanced electronic circuits and components. It has output that is not affected by grid fluctuations, and has protection measures such as zero position, overcurrent, breakdown, and overvoltage. Regardless of overcurrent, breakdown, or overvoltage protection circuits, they can quickly act, effectively ensuring the safety of equipment and personnel. The ZGF2000 (300KV/2mA) series DC high-voltage generator uses LCD display for output, which is much lighter in size and weight than the original KGF model, making it very suitable for on-site use. The newly designed "0.75U" LCD display can directly display and lock 0.75U1mA without manual calculation during on-site testing. This instrument has the advantages of small size, high power, light weight, easy portability, easy operation, safety and reliability.

Model type

According to technical parameters, DC high-voltage generators can be divided into:

1. PSZGF-A DC High Voltage Generator High Frequency Voltage Doubling Circuit

2. PSZGF-B DC High Voltage Generator - PWM High Frequency Pulse Width

3. PSZGF-C DC High Voltage Generator - Portable

4. PSZGF-D Intelligent DC High Voltage Generator - Computer Control

5. PSZGF-F type water-cooled generator dedicated DC high-voltage generator

6. PSZGF-60/2 portable DC high-voltage generator.

The selection principle of high-voltage DC generators is widely applicable to the power testing departments of power departments, industrial and mining, metallurgy, steel and other enterprises. Conduct DC high-voltage tests on high-voltage electrical equipment such as zinc oxide lightning arresters, power cables, transformers, and generators. It is an important equipment for high-voltage testing, and its selection and use should follow the following principles: