— 21 —
Extension Leads 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.
•
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.
(
1
). Protective conductor resistance test.
RPE <
=
1
Ω
?
(
2
). Insulation resistance test between L/N and PE.
(
3
). Polarity test between L-L and N-N.
L-L & N-N <
=
10
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.
Light up in red
no
→
L-L
→
value or
no
→
n-n
→
value will
be repeated on the LCD.
Value of (
1
) and (
2
) will be
alternately displayed on LCD.
No
No
No
Yes
Yes
Yes
PASS
Light up in green
Light up in green
LnE >
=
1
M
Ω
?
