ZGF-40KV/2mA DC High Voltage GeneratorIt is mainly suitable for power departments, industrial and mining, metallurgy, steel and other enterprises to conduct DC withstand voltage tests or DC leakage current tests on high-voltage electrical equipment such as zinc oxide lightning arresters, power cables, transformers, circuit breakers, generators, etc.
ZGF-40KV/2mA DC high voltage generator.By applying AIPWM technology, the inaccurate linearity of PWM technology has been adjusted, resulting in a significant improvement in instrument accuracy. And AI technology is used to set overvoltage protection and overcurrent protection, replacing the problem of digital dial switches only being able to set voltage values, not current values and voltage drift. On the basis of maintaining the manual 0.75UDC1mA function button, AI fully automatic zinc oxide arrester measurement, cable segmented voltage withstand test, automatic voltage withstand test functions are added, and the test report can be directly printed and saved, avoiding the problem of handwritten errors in the test report. The manual mode is retained, and the printing function at any voltage and current, as well as the total time T1 and segmented timing T2 functions are added. The instrument has added perpetual calendar and time functions, and the experimental report includes time and date.

1. Adopting a human-machine dialogue interface and a large LCD display, the operation is more user-friendly and can display voltage and current values in real time.
2. Fully automatic testing function of zinc oxide lightning arrester. Accuracy with printing function ≤ 1%, ripple coefficient: ≤ 0.5%. Maintain manual 0.75UDC/1mA function.
3. Segmented voltage withstand: Automatic voltage boosting (cable automatic testing) can be completed according to the user's set segmented voltage and measurement time for each segmented voltage.
4. Single withstand voltage: Set a test voltage value, and the instrument can automatically increase to that voltage (transformer automatic testing).
5. Automatic measurement function for insulation resistance. Realize the automatic measurement function of insulation resistance value of the test sample.
6. Wireless transmission function of microampere meter: It can achieve wireless transmission of high-voltage side current data, making measurement data more accurate and reliable; Can improve the personal safety of operators.
7. Pioneering digital protection for voltage and current. Replaced the problem that digital dip switches can only set voltage values and cannot set current values and voltage drift, with an error of ≤ 1%.
8. Equipped with functions such as perpetual calendar, time, storage, printing, etc.
9. Grounding protection alarm function: Failure to ground or poor grounding will result in a "wiring fault" and an alarm prompt.

1. Voltage output 0-40kV accuracy ± 1% ± 1 word
2. Current output 0-2000uA accuracy ± 1% ± 1 word
3. Equipped with high-precision 0.75UDC-1mA single touch button, accuracy ≤ 1.0%
4. It has the functions of fully automatic testing of zinc oxide lightning arresters, segmented voltage resistance of cables, and automatic voltage resistance
5. It has the function of manually adjusting voltage output.
6. Working mode: intermittent use: rated load 30 minutes, 1.1 times rated voltage use: 10 minutes
7. Working environment: Temperature: -10 ℃ to+40 ℃
8. Relative humidity: not exceeding 85% at room temperature of 25 ℃ (no condensation)
9. Altitude: below 1500 meters

We use a 10kV zinc oxide lightning arrester as the test sample to illustrate, and its wiring diagram is as follows:

Figure 2 Lightning arrester test wiring diagram
As shown in Figure 2, the black high-voltage wire of the instrumentRed clipClamp onto the high-voltage side of the lightning arrester. Insert the white high-voltage head on the other side of the high-voltage line into the L high-voltage line output socket, and clip the small red clip onto the E high-voltage line shielding column.
The low-voltage side of the lightning arrester is connected to the instrument grounding column through a transparent grounding wire, while ensuring that the grounding column is grounded.