— 15 —
Class I Test Flowchart
Start
#
CAUTION
•
Short-circuit between L/N and PE is doubt when "no" and "OFF"
appears on the LCD in turns at the insulation resistance measurement
of the Extension leads test for Class I & II while DUT is on. Testing
should be immediately suspended.
•
Follow the procedure described in 5.2-3 and do NULL setting before a
measurement.
•
Alligator clip must make good contact with the enclosure of the DUT.
•
When the terminal is open or the resistance value exceeds measuring
range, OL mark (over range display) appears on the LCD.
•
Do not touch the device under test while testing is in progress. Since
a high voltage of 500V, user may get electrical shock.
⑴
. Protective conductor resistance.
RPE <
=
1
Ω
?
⑵
.Appliance switch test
(
3
). Insulation resistance between L/N and PE.
LnE >
=
1
M
Ω
?
Light up in red
no
→
Con
→
value will
be repeated on the LCD.
Light up in red
no
→
LnE
→
value will
be repeated on the LCD.
Value (
1
). and (
3
). will be
alternately displayed on LCD
When the resistance between
LN is about
100
k
Ω
or more
no
→
OFF is displayed
alternately on the LCD.
No
No
No
Yes
Yes
Yes
PASS
Light up in green
Light up in green
Is the Switch
turning on?
