DX8780 Cable Withstand Voltage Tester for Precise Results

AC/DC test switching:
1. The high-voltage output of this instrument is AC voltage. The method of obtaining direct current is to connect a high-voltage silicon stack in series in the original circuit, making the test circuit a pulsating direct current voltage. The implementation process is that the silicon stack is already in the high-voltage insulation tower of the high-voltage transformer, and a short-circuit pole is usually used to short circuit the high-voltage silicon stack. When a DC test is required, remove the short-circuit rod and connect the high-voltage silicon stack to the test circuit. At this time, the voltage of the circuit is a pulsating DC voltage.
2. The switching of AC/DC voltage in the experiment mainly depends on whether the short-circuit rod in the high-voltage insulation tower is removed. When the short-circuit rod is removed, the voltage on the high-voltage equalizing ball is DC voltage, and when the short-circuit rod is inserted, the voltage on the high-voltage equalizing ball is AC voltage.
3. Front panel DC AC selection button. The status of this button cannot change the voltage nature of the device output. Pressing this button only connects the DC alarm circuit to the device. Instruct the user that when opening the box door, you need to discharge the high-voltage equalizing ball. Press the discharge device on the panel to make the end of the discharge rod contact the high-voltage equalizing ball. It is recommended that the user press the copper ball for more than five seconds each time it comes into contact with high voltage during discharge.
4. During the DC test, the computer should also choose the DC state, otherwise the measurement results will be incorrect. Simply put, there is a fold relationship between AC voltage and DC voltage.
Performance characteristics:
(1) Door limit protection: Do not close the door, even if the power point experiment starts, the device has no response, and the software has a warning that the safety door is not closed.
(2) Voltage zeroing protection: If there is a sudden power outage during the experiment, it will automatically return to the zero position after the next startup, ensuring that the initial voltage is at zero position
(3) Termination voltage protection: The termination voltage can be set through software to ensure that if there is an abnormal rise to the specified voltage during the boosting process, it will automatically terminate and return to zero
(4) High voltage mechanical limit: If the software system loses control and the voltage continues to rise, it will automatically return to zero after reaching the high voltage limit. If it does not stop after breakdown, the overcurrent protector will collect data to ensure that the voltage automatically returns to zero. There is a high voltage indicator light to observe the status of the indicator light to determine whether the voltage is really rising or at zero. If an experiment is conducted for a long time, in order to ensure the good operation of the equipment, a transformer exhaust port is left on the equipment to ensure the good operation of the transformer and increase its service life. If there is an odor or combustion and smoke phenomenon in the sample during the experiment, it can be eliminated through the exhaust system.
(5) Independent grounding protection
(6) Short circuit protection
(7) Software Misoperation Protection
(8) Leakage protection
(9) End of experiment discharge protection.