Warnings And Cautions When Operating The Tester; Connecting Of Test Lead-Wire On Low Side; Connection Of Test Lead-Wire On High-Voltage Output Side; Power Switch - Kikusui TOS8870A Operation Manuals

2.2 Warnings and Cautions when Operating the
Tester

2.2.1 Connecting of test lead-wire on LOW side

Fig.2-2 shows the connection of the test lead-wire on LOW side. Every time the Tester is used,
check if the lead wire is not damaged or disconnected. The lead-wire connection to the DUT shall
be made from LOW side. If the connection is incomplete, it is hazardous that the entire DUT may
be changed with high voltage.

2.2.2 Connection of test lead-wire on high-voltage output side

After connecting the lead-wire on LOW side, take the following procedure.
1.
2.
3.
4.
5.
6.

2.2.3 Power switch

The power switch shall be turned on after confirming that the TEST VOLTAGE dial has been turned
to the extreme left ("0" position).

2.2.4 Change of test condition

Change-over of the switches on the panel shall be made after confirming that the STOP switch has
been pushed in and that the TEST VOLTAGE dial has been turned to the extreme left ("0" position).
TOS8870A
LOW terminal
Test lead-wire (Black) to housing of
Device Under Test
Attach the test lead-wire fixuture,
as illustrated.
Fig.2-2 Connecting of test lead-wire on LOW side
Push the STOP switch.
Confirm if the indicator of the output voltmeter is at "0".
Confirm if the DANGER lamp has been off.
Connect the high-voltage test lead-wire with the HIGH VOLTAGE terminal.
Short the high-voltage test lead-wire with the LOW test lead-wire once, and con-
firm that no high voltage is output.
Lastly, connect the LOW test lead-wire and then the high-voltage output test lead-
wire to the DUT.
WARNINGS AND CAUTIONS FOR OPERATING THE TESTER 7