Relevant national standards referenced by DC High Voltage Generator:
IEC 60-1: 1989 High Voltage Test Techniques - Part 1: General Test Requirements
DLT 848.1-2004General Technical Conditions for High Voltage Test Devices Part 1: DC High Voltage Generators
The DC High Voltage Generator adopts a medium frequency voltage doubling circuit. The new type of DC High Voltage Generator applies PWM pulse width modulation technology and high-power IGBT devices. According to electromagnetic compatibility theory, special shielding, isolation, and grounding measures are adopted. This enables high-quality, portable DC high voltage testing that can withstand rated voltage discharge without damage. The 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, ungrounded protection, etc. The drive signal fast shutdown protection uses a dedicated sensor at the output end for sampling, with a response time of nanoseconds. Through nanosecond-level optical isolation elements 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 in the event of an output short circuit. It refers to a high voltage power supply mainly used in insulation and leakage detection. There is no strict distinction between high voltage power supply and high voltage generator. The 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 divided into two sections as an example, when used as a single section, it can be used as 100kV/2mA for DC high voltage testing of electrical equipment in systems of 35kV and below, ensuring measurement accuracy and avoiding overkill; when used as two sections, it can be used as 200kV/2mA for DC testing of 220kV segmented, 110kV and below
zinc oxide arresters and DC withstand voltage testing of cross-linked cables. It truly achieves one machine with two uses, greatly facilitating on-site use for users. It is mainly used to study the insulation strength of electrical equipment under DC high voltage, the insulation strength of converter station equipment and insulating materials under DC high voltage, corona and ion flow of DC transmission lines and their effects, as well as leakage current tests of AC and DC power equipment. In addition, it can also serve as a power supply for other high voltage test equipment such as impulse voltage generators, impulse current generators, and oscillating circuits. In other scientific and technological fields, such as physics (accelerators, electron microscopes, etc.), electronic medical equipment (X-rays), industrial applications (exhaust gas precipitation, electrostatic painting, etc.), or electronic communications (television, broadcasting stations), it is also widely used.
DL/T 474.2-2006 "Guidelines for Implementation of On-site Insulation Tests Part 2: DC High Voltage Tests"
DL/T596-2005 "Regulations for Preventive Tests of Power Equipment"
GB1094.1-GB1094.6-96 "Degrees of Protection Provided by Enclosures"
GB2900 "Electrotechnical Terminology"
GB/T16927.1~2-1997 "High Voltage Test Techniques"
GB4793-1984 "Safety Requirements for Electronic Measuring Instruments"
GB191 "Packaging, Storage and Transportation Marking"
GB/T.311-1997 "Insulation and Coordination of High Voltage Transmission and Transformation Equipment"
