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Product Features:
① Smaller size, lighter weight, more aesthetically pleasing, more reliable, easier to operate, and fully featured, making it the ideal replacement product for the power system in the 21st century.
② Manufactured with advanced technology. Pulse train logic array modulation, using high-power IGBT devices, phase fuzzy control, resulting in higher output stability, lower ripple, and frequency up to 100kHz.
③ Designed for maintenance-free operation, with main components imported from Germany, the USA, and Japan, durable and able to withstand continuous direct short-circuit discharge to ground.
④ High precision and accurate measurement. The output voltage adjustment uses a single multi-turn potentiometer, with smooth voltage rise and high adjustment precision, and features coarse and fine adjustment functions. The instrument measures leakage current at both high and low voltage ends. The high-voltage end uses a spherical shielded digital display, resistant to discharge impact. Strong anti-interference performance, suitable for field use.
⑤ The voltmeter on the control box directly displays the voltage applied to the load test object, eliminating the need for an external voltage divider and current-limiting resistor, simplifying wiring and operation.
⑥ Negative polarity output, zero-start, continuously adjustable, with various protection functions such as overvoltage, overcurrent, return-to-zero, grounding protection, and disconnection protection. Strong automatic protection, safe operation, and all technical indicators are superior to industry standards and similar products.
⑦ Equipped with a 75% function, providing great convenience for zinc oxide arrester measurements. The control box has a 75% voltage switch function. When the current rises to 1000uA, press the 75% button, and the values displayed on the voltmeter and ammeter are the 75% data. After completion, immediately return the voltage adjustment knob to zero and the fine adjustment knob to zero. Also, immediately switch the 75% button back to the normal position before conducting other tests.
Precautions:
1、300kV/2mA DC High Voltage Generator, personnel using the high-frequency DC high-voltage generator must be professionals with a "High Voltage Test Certificate".
2. When using this instrument, users must comply with Article 168 of the "Electric Power Safety Regulations" and install two obvious disconnection points before the working power enters the test device. When changing test objects and wiring, first clearly disconnect the two power disconnection points.
3. Before testing, check that all test wiring, control box, voltage doubler cylinder, and test object grounding wires are properly connected. The test circuit grounding wire should be connected at a single point as per the instrument manual.
4. For discharging large capacitance test objects, use the PSZGF dedicated discharge resistor rod. When discharging, do not immediately touch the test object with the discharge rod. Gradually approach the test object until air gap ionization discharge occurs with a hissing sound. When no sound is heard, use the discharge rod to discharge, and finally connect directly to the ground wire for discharge.
5. When DC high voltage is 200KV or above, even if test personnel wear insulating shoes and are in a safe distance area, due to the spatial electric field distribution of high-voltage DC ions, nearby standing individuals may carry different DC potentials. Test personnel should not shake hands with each other or touch grounding bodies, otherwise, slight electric shock may occur. This phenomenon is more obvious in dry areas and winter, but generally does not cause harm to the human body due to the small energy.
6. The control box power supply for the PSZGF series high-frequency DC high-voltage generator is AC220V±10%, 50Hz. If the power supply is through a 1/1 isolation transformer or on-site self-generated power, one point of the power supply must be artificially connected to the earth.
Technical Specifications:
1. Output voltage polarity: Negative polarity
2. Working power supply: AC220V±10%, 50HZ
3. Voltage measurement error: Full scale 2%±1d, maximum resolution 0.1KV
4、300kV/2mA DC High Voltage Generator with superior quality Current measurement error: Full scale 1%±1d, maximum resolution 0.1UA
5. Ripple coefficient better than 1%
6. Voltage stability: Random fluctuation, grid variation ±10% ≤0.5%
7. Working mode: Intermittent duty, working time not less than 30 minutes at rated voltage and current
8. Ambient temperature: -10℃~50℃
9. Relative humidity: ≤85% (25℃)
10. Altitude: 2000 meters
