Intelligent DC High Voltage Generator 200KV5mA - Technical Standard for Level 5 Commissioning Equipment
Suitable for power departments of factories and mines, power departments, scientific research institutions, railways, chemical industry, power plants, etc., for measuring the conductivity current of high-voltage zinc oxide arresters and magnetic blow arresters, DC withstand voltage tests of power cables, DC withstand voltage tests of large-capacity generator sets, and other occasions requiring DC high voltage power supply.
Technical Features
1. The GS103E fully automatic intelligent DC high voltage generator adopts computer control technology to control AIPWM pulse width modulation, measurement, protection, and display. It displays output DC high voltage, current, voltage setting, current setting, timing, and protection information on the LCD screen, and is equipped with a USB interface and printer for real-time storage or printing of test data.
2. The GS103E fully automatic intelligent DC high voltage generator pioneers the intelligent poor grounding protection and alarm function (cannot boost voltage when grounding is poor), and can cancel the poor grounding protection alarm function once (such as when using a generator as power supply or when on-site grounding is poor but testing can still be carried out). An emergency stop button is added, greatly improving the safety of operators during operation.
3. The GS103E fully automatic intelligent DC high voltage generator adopts a 30—50kHz intelligent voltage doubling circuit, which greatly reduces the volume and weight of the control box and voltage doubling cylinder, making it more convenient for on-site use. AIPWM technology is applied to adjust the inaccurate linearity of PWM technology, greatly improving the instrument's accuracy. AI technology is used to set overvoltage protection and overcurrent protection, replacing the digital dial switch that can only set voltage value but not current value and the problem of voltage drift; and according to electromagnetic compatibility theory, special shielding, isolation, and grounding measures are adopted to achieve high quality of the DC high voltage generator, which can withstand rated voltage discharge without damaging the machine.
4. The GS103E fully automatic intelligent DC high voltage generator adds AI fully automatic zinc oxide arrester measurement and oil-immersed or transformer measurement functions, and has a manual trigger button specially designed for zinc oxide arrester testing at 0.75UDC/1mA.
5. The GS103E fully automatic intelligent DC high voltage generator adopts large voltage feedback, greatly improving voltage stability, and selects advanced components from the United States, Japan, etc.; the voltage doubling cylinder is made with German technology epoxy winding technology, reducing the instrument's own leakage; the intermediate frequency transformer is specially designed by relevant experts, with small size and large capacity. The base of the voltage doubling cylinder contains a hidden △—Y support leg, which expands into a Y shape when in use for stable and convenient support, and contracts into a △ shape when packed, hidden in the base.
6. The GS103E fully automatic 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 elements are also nanosecond-level, with action time generally within 10 microseconds to completely cut off the DC main circuit. The push signal fast shutdown protection uses dedicated sensors for sampling at the output end, with response time at nanosecond level, and through nanosecond-level optical isolation elements and nanosecond-level analog switches, the push signal of the power amplifier circuit is cut off within 2 microseconds, ensuring that power devices are not damaged in the case of output short circuit.
Safety Warnings for Use
1. The personnel conducting DC high voltage tests must be professionals with a "High Voltage Test Work Certificate"
2. When using the RTZG-II series DC high voltage generator 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 tester.
3. When DC high voltage is 200KV and above, even if test personnel wear insulating shoes and are outside the safe distance, due to the influence of high-voltage DC ion distribution, adjacent human bodies may carry different DC potentials. Test personnel should not shake hands with each other or touch grounding bodies with hands, otherwise there may be slight electric shock, which generally does not cause harm to people. Cable tests must use current limiting resistors.
4. When discharging large capacitor test objects, do not immediately contact the test object with the discharge rod. Instead, gradually approach the test object with the discharge rod. When the air gap begins to ionize and discharge with a hissing sound at a certain distance, and when there is no sound, the discharge rod can be used for discharge, and finally directly ground the wire for discharge.
Instrument Maintenance
1. If electronic instruments are not used for a long time, they should be powered on for more than 10 minutes each month;
2. When used outdoors for a long time, keep the exterior of the instrument clean;
3. The instrument warehouse should be kept dry and ventilated;
4. Regularly check the dust prevention devices in various places. If damage or loose connections are found, handle them in time to prevent sand and dust from mixing in and damaging the equipment.
