This instrument generates high voltage output up to 6kV for external test. Any incorrect or mistaken procedures in using this instrument may cause injury or death. Thus for your safety, be sure to read through the notices described in this chapter and memorize them to prevent any accidents from happening.
lnduction and electric shock
To avoid electric shock, we suggest you to put on the insulation rubber gloves before performing any electricity related work.
Grounding
There is a safety grounding terminal at the hipot tester rear panel. Ensure to use appropriate tools to connect the grounding terminal surely. if it is not grounding correctly, the chassis of test machine may contain high voltage when the power circuit or the connecting line of any devices short-circuited with the grounding terminal. This is very dangerous as it may cause electric shock if anyone touches the instrument under the circumstances. Therefore, it is necessary to connect the safety grounding terminal to earth correctly.
Rear Panel for detail information.
Connecting test cable to the “Common Test Terminal”
Please connect the test cable to Common Test Terminal”actually. Always check if the test cable is connected properly during test. When you need to connect the test cable to the unit for test, use the one on Common Test Terminal first to connect the DUT. It is very dangerous if the test cable on Common Test Terminal is not connected completely or loose as the entire DUT may contain high voltage.Refer to section 2.1 Front Panel.
Connecting test cable to the “High Voltage Output Terminal”
Follow the procedures below to connect the high voltage output line after the “Common Test Terminal” is connected.
Press [STOP] button first.
Ensure the DANGER indicator is off.
Short circuit the “Common Test Terminal”test cable and “High Voltage OutputTerminal”, and ensure there is no voltage output.
Last, connect the “Common Test Terminal” test line to the DUT and then the hipot tester cable to the DUT.
Plug in the high voltage test cable to the “High Voltage Output Terminal”.
End test
When tests are done and the test instrument is not in use or need to leave for a whileduring usage, make sure to turn off the power switch (to O). See section 2.1 Front Panelfor detail information.
Dangerous places when the instrument is in test mode
lt is very dangerous to touch the area with high voltage such as the DUT, test cable, probe, and output terminal when the instrument is in test mode.
DO NOT touch the alligator clip as shown below on the test cable when the system is in test mode as the rubber insulation is not good enough and may cause danger if touched.
End test confirmation
You may touch the DUT, high voltage test cable or high voltage output area like outputterminal in order to alter the layout or perform particular test request, thus be sure to turnoff the power before doing it. For testing the DC hipot tester insulation resistance, the DUT may contain high voltage after completing the test, so you need to carefully follow theinstructions described in this chapter to perform the work.