Product Details

Product Features of Level 4 Electric Power Testing/DC High Voltage Generator:



1.  Smaller size, lighter weight, more aesthetically pleasing, more reliable, easy to operate, and fully functional, making it ideal for field use. It is the most ideal reliable product of the new century.

2.  Adopting advanced technology and manufacturing processes, it is the first to apply PWM high-frequency pulse width modulation technology and pulse train logic array modulation. It uses high-power IGBT devices and utilizes high-frequency technology to increase the frequency up to 100kHz, resulting in higher output voltage stability and smaller ripple coefficient.

3.  Designed for maintenance-free operation, the main components are selected from advanced technology components imported from the United States, Germany, Japan, and other countries, ensuring durability and resistance to continuous direct short-circuit discharge to ground.

4.  High precision and accurate measurement. Both voltage and current meters are digital displays, with voltage resolution of 0.1kV and current resolution of 0.1uA. The voltage meter on the control box directly displays the voltage value applied to the load test object, eliminating the need for an external voltage divider and simplifying wiring. The instrument has high and low voltage terminals for measuring leakage current. The high voltage terminal uses a circular shielded digital display, which is resistant to discharge impact and has good anti-interference performance, suitable for on-site use.

5.  High voltage adjustment stability, smooth voltage regulation across the full range. The output voltage adjustment uses an imported single multi-turn potentiometer, ensuring smooth boosting process and high adjustment precision, with coarse and fine adjustment functions. Voltage adjustment accuracy is better than 0.1%, voltage and current measurement error is less than 1.0%, and ripple factor is better than 0.5%.

6.  Negative polarity output, zero-start, continuously adjustable, with various protection functions such as overvoltage, overcurrent, return-to-zero, grounding protection, and unique disconnection protection. The automatic protection circuit has strong functions, providing complete and reliable protection, ensuring operational safety. All technical indicators are superior to industry standards and similar products.

7.  Added high-precision 75% VDC-1mA function, bringing great convenience for zinc oxide arrester measurement. A simple press, no calculation needed. The control box has a 75% voltage function key. During arrester testing, when the current rises to 1000uA, press the 0.75 button. The values displayed on the voltage and current meters are the 75% data. After completion, immediately return the boosting knob to zero, and also return the fine voltage adjustment knob to zero, then press the green button to cut off the high voltage and turn off the power switch. Then proceed with other tests.

8.  Convenient overvoltage setting function, using digital dial switches to visually display the set voltage value, making operation more flexible. The displayed value unit is kV.

9.  The voltage doubling cylinder has a segmented structure, making it flexible and convenient for field use. One machine can serve multiple purposes, providing economic benefits.

10. Three built-in support feet at the bottom increase the stability of the voltage doubling cylinder.

Product Introduction:

It is specially used to test the electrical insulation strength and leakage current of power devices. It is newly researched, designed, and manufactured according to the requirements of the Chinese industry standard ZBF 24003-90 "General Technical Conditions for Portable DC High Voltage Generators". It is a product of the new era. 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 also have nanosecond response time. The action time can completely cut off the DC main circuit within 10 microseconds, thereby maximizing the protection of the instrument from damage.

Technical Standards

DL/T 848.1-2004 "General Technical Conditions for High Voltage Test Devices Part 1: DC High Voltage Generators"

DL/T 474.2-2006 "Guide for Field Insulation Tests Part 2: DC High Voltage Tests"

DL/T596-2005 "Preventive Test Regulations for 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 Marks"

GB/T.311-1997 "Insulation and Coordination of High Voltage Transmission and Transformation Equipment"

Technical Parameters: