Digital AC/DC High Voltage Generator - Yangzhou DARUI
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1.Digital AC/DC High Voltage Generator High precision and accurate measurement. The voltage and current meters are both digital displays, with voltage resolution of 0.1kV and current resolution of 1uA. The voltage meter on the control box directly displays the voltage value applied to the load test object, no external voltage divider is needed, and wiring is simple. The instrument has the ability to measure leakage current at both high and low voltage ends. The high voltage end uses a circular shielded digital meter display, which is not afraid of discharge impact, has good anti-interference performance, and is suitable for on-site use.
2、A high-precision 75% VDC-1mA function has been added, bringing great convenience to zinc oxide arrester measurements. A simple press is all it takes, no calculation needed. The control box has a 75% voltage function key. When performing arrester tests, when the current rises to 1000uA, press the 0.75UDC--1mA button, and the values displayed on the voltage and current meters will be the 75% data. After completion, immediately return the voltage regulator potentiometer to zero, and immediately press the green button to cut off the high voltage and turn off the power switch. Then proceed with other tests.
3、Adopting advanced technology and manufacturing processes, it is the first to apply the latest PWM intermediate frequency pulse width modulation technology and pulse train logic array modulation, using high-power IGBT devices and voltage feedback, resulting in higher output high voltage stability and smaller ripple coefficient.
4、Negative polarity output, zero start, continuously adjustable, with various protection functions such as overvoltage, overcurrent, return to zero, grounding protection, and special disconnection protection. The automatic protection circuit has strong functions, complete and reliable protection, making operation safe, and all technical indicators are superior to industry standards.
5、Convenient overvoltage setting function, using digital thumbwheel switches, which can display the set voltage value directly, making operation more flexible, and the displayed value unit is kV
The indicator lights, switches, knobs, etc. on the control box are clearly marked. When reading this operation manual, please refer to the component names on the control box panel.
On the side of the high-voltage tower chassis, there is a seven-core socket for connecting the control box cable. On the side of the chassis, there is a copper terminal for grounding connection.
The accompanying high-voltage shielded current meter is a digital microammeter. The jack on the top of the meter is for connecting the test object's wire, and it also serves as the power switch. When not in use, unplug the plug to automatically turn off the power. To replace the battery, open the top cover screw, replace the battery, then close the cover and tighten the screw. For the flat round meter, open the back cover to replace the battery.
Operation Instructions
1、Connect the grounding terminal on the control box panel to the grounding terminal on the high-voltage tower using the grounding wire, and securely connect to the ground of the site or laboratory. To ensure the safety of you and the equipment, please repeatedly check the grounding wire to ensure all parts are well grounded.
Use the provided seven-core cable to connect the control box and the high-voltage tower. Both ends of the cable have the same quick aviation plug. Note to align the notch on the side of the plug with the thick convex part inside the socket, insert, and tighten clockwise. (Either end of the cable can be used to connect to the control box or the high-voltage tower.) Connect the power cord; the power supply is single-phase AC 220V, 50Hz.
2、Turn on the power switch. At this time, the power switch light (green) and the panel meter light up. Then the high voltage indicator light (green) lights up. If the high voltage buzzer is in the on position, it will sound to remind the operator that high voltage is being applied. At this time, turn the high voltage output adjustment knob clockwise to increase the voltage. The voltage meter displays the voltage KV value on the load test object, and the current meter displays the sum of the current flowing through the test object and all leakage currents, but does not include the current of the built-in high voltage divider. The current is displayed in microampere units (uA).
If the power switch is turned on, the high voltage indicator light (green) does not light up, and the "return to zero" light (red) in the fault display is on, it means the high voltage output adjustment knob is not at the zero position. Please turn the knob counterclockwise to the "zero" position, and also return the fine voltage adjustment knob to zero. Then the "return to zero" light goes off, and you can turn clockwise to increase the voltage.
3、If voltage regulation protection within the rated output voltage range is not needed, turn the overvoltage protection setting knob clockwise to the maximum value. At this time, when the output voltage exceeds the rated output voltage, automatic protection will cut off the high voltage. If voltage regulation protection within the rated output voltage range is required, please increase the voltage without load following the above steps to the predetermined protection voltage, then slowly turn the overvoltage protection setting knob counterclockwise to the required voltage. When overvoltage protection action occurs, the "overvoltage" indicator light lights up. Keep the overvoltage protection setting knob at this position, return the voltage increase knob to zero, and turn off the power. After connecting the test object, if the voltage exceeds the predetermined voltage in the future, the high voltage will be automatically cut off.
The ZGF digital DC high voltage generator complies with the ZBF24003-90 "Portable DC High Voltage Generator General Technical Conditions" standard, and has been verified by Zhongshi High Voltage Testing Electric Co., Ltd. and the National Testing Center of the National Electric Power Department, strictly implementing legal standards to ensure the safety of users of the DC high voltage generator.
Note: The above information and technical parameters are compiled and released by Yangzhou DARUI Electric Co., Ltd.
