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1. The intelligent DC high voltage generator is the first in the industry to adopt a segmented structure, which can be used for both high voltage levels and lower voltage levels while maintaining its accuracy. Taking 100/200kV/2mA as an example with two segments, when used as a single segment, it can be used as 100kV/4mA for DC high voltage tests on electrical equipment of 35kV and below systems, ensuring measurement accuracy and avoiding overkill; when used with two segments, it can be used as 200kV/2mA for DC tests on zinc oxide arresters of 220kV segmented, 110kV and below, and DC withstand voltage tests on cross-linked cables. It truly serves dual purposes, greatly facilitating on-site use for users.

2. It is the first to adopt computer control technology, controlling PWM pulse width modulation, measurement, protection, and display. The LCD displays output DC high voltage, current, overvoltage setting, timing, and protection information. The intelligent DC high voltage generator also has an RS232 interface for communication with a computer.

3. The intelligent DC high voltage generator pioneers intelligent poor grounding protection and alarm function (cannot boost voltage if grounding is poor), voltage measurement circuit disconnection protection (cannot boost voltage if the voltage measurement circuit is disconnected), and an emergency stop button, greatly improving operator safety during work.

4. The intelligent DC high voltage generator uses a 30-50kHz high-frequency voltage doubling circuit, pioneering the application of the latest PUM pulse width modulation technology and high-power IGBT devices. Based on electromagnetic compatibility theory, it adopts special shielding, isolation, and grounding measures to achieve high quality. The intelligent DC high voltage generator can withstand rated voltage discharge without damaging the machine.

5. The intelligent DC high voltage generator uses large voltage feedback, greatly improving voltage stability. It is specially designed with a 0.75UDC-1mA trigger button for zinc oxide arrester tests, and the frequency is increased to 30-50KHz, significantly reducing the volume and weight of the control box and voltage doubling cylinder, making it more convenient for on-site use.

6. The intelligent DC high voltage generator uses components with advanced technology from the United States, Japan, etc., and an internationally styled series chassis manufactured in Germany, combining practicality and aesthetics.

7. The voltage doubling cylinder of the intelligent DC high voltage generator is developed with German technology; the intermediate frequency transformer is specially designed by experts, with small size and large capacity. The base of the voltage doubling cylinder has a built-in △-Y support leg, which expands into a Y shape when in use for stable support, and contracts into a △ shape when packed, hidden inside the base.

8. The intelligent DC high voltage generator has multiple protection functions, such as: low-voltage overcurrent, low-voltage overvoltage, high-voltage overcurrent, high-voltage overvoltage, zero position protection, and non-grounding protection. Fault sampling uses dedicated sensors with nanosecond response time, and the optical isolation components are also nanosecond-level. The action time is generally within 10 microseconds to completely cut off the DC main circuit. The drive signal fast shutdown protection uses dedicated sensors at the output end for sampling, with nanosecond response time. Through nanosecond-level optical isolation components and nanosecond-level analog switches, the drive signal of the power amplifier circuit is cut off within 2 microseconds, ensuring that power devices are not damaged even in the case of output short circuit.

9. The fully shielded automatic range-switching high-voltage microammeter equipped with the intelligent DC high voltage generator uses a metal shell, and the LCD display is connected to the shell with conductive glass. There are no buttons on the shell, and the test wire and shield wire are coaxially led out, achieving true full shielding; the ammeter is a 4 1/2 digit display, with 0-200-2000μA automatic range switching, greatly improving the resolution of leakage current.

IEC 60-1: 1989 High-voltage test techniques - Part 1: General test requirements

GB/T 16927.1-1997 High-voltage test techniques - Part 1: General test requirements

IEC 60-1: 1994 High-voltage test techniques - Part 2: Measuring systems

GB/T 16927.1-1997 High-voltage test techniques - Part 2: Measuring systems

DL 474.2-92 Implementation guide for on-site insulation tests - DC high voltage test

ZBF 24002 Guide for the use of on-site DC and AC withstand voltage test voltage measuring devices

◆Overcurrent protection: When the high-voltage output is short-circuited, the instrument should immediately cut off the output, and the instrument should not be damaged.

It has overcurrent protection, with Chinese alarm prompts and audible prompts.

◆Overvoltage protection: When the high-voltage output exceeds the overvoltage setting value, the instrument should automatically cut off the output immediately, ensuring that the test object is not damaged due to overvoltage.

It has overvoltage protection, with menu-style setting, and Chinese alarm prompts and audible prompts.

◆Zero position protection: The potentiometer should be returned to zero before boosting voltage, to prevent harm to personnel and the instrument due to voltage at the high-voltage end.

It has zero position protection, with Chinese alarm prompts and audible prompts.

◆Grounding protection: When the instrument is not grounded or poorly grounded, it should have a grounding alarm and corresponding prompts, and cannot boost voltage, to prevent harm to personnel and the instrument.

It has grounding protection, with Chinese alarm prompts and audible prompts. In special situations (such as cable test sites, generator power supply occasions), when tests must be conducted without reliable grounding, the protection can be released by long-pressing the 75% function key, facilitating on-site testing for users.

◆Internal voltage measurement circuit open circuit protection: When the internal voltage measuring resistor is open, the voltage measurement signal line is disconnected, or the cable terminal has poor contact, without protection, the instrument's voltmeter would have no indication while voltage is present at the high-voltage end, which could cause personal injury accidents.

It has internal voltage measurement circuit open circuit protection, with Chinese alarm prompts and audible prompts.