Intelligent DC High Voltage Generator 200KV5mA - Technical Standard for Five-Level Commissioning Equipment
Suitable for power departments of factories and mines, power departments, scientific research units, railways, chemical industry, power plants, etc., for the measurement of conduction current of high-voltage zinc oxide arresters and magnetic blow arresters, DC withstand voltage test of power cables, DC withstand voltage test 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, controlling 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 intelligent poor grounding protection and alarm function (cannot boost voltage if grounding is poor), and can cancel the poor grounding protection alarm function once (such as when using a generator as power source or when on-site grounding is poor but testing can still be conducted). An emergency stop button is added, greatly improving the safety of operators during work.
3. The GS103E fully automatic intelligent DC high voltage generator adopts a 30—50kHz intelligent voltage doubler circuit, significantly reducing the volume and weight of the control box and voltage doubler 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, capable of withstanding 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 is specially designed with a 0.75UDC/1mA manual trigger button for zinc oxide arrester tests.
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 doubler cylinder is made using German technology developed epoxy winding technology, reducing the instrument's self-leakage; the medium-frequency transformer is specially designed by relevant experts, with small size and large capacity. The base of the voltage doubler cylinder contains a hidden Δ—Y support leg, which unfolds into a Y shape when in use, providing stable and convenient support, and folds into a Δ shape when packed, hidden inside 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-level action time, and the optical isolation components 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 the nanosecond level. Through nanosecond-level optical isolation components 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. 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, nearby 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. First, 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 dustproof devices in various places. If damage or loose connections are found, handle them promptly to prevent sand and dust from mixing in and damaging the equipment.
