47
PVΩ Measurement Function (Model IR4055)
Power conditioner, Main switch
Disconnector devices
N terminal
(Black)
Ground
terminal
(Red)
P terminal
String
10
7
ON
9
OFF
7
Turn on the
MEASURE
key.
To make continuous measurements, pull up the
MEASURE
key.
Do not remove any test leads from the terminals until the resistance is
displayed. Doing so results in incorrect measurements.
8
Check the resistance displayed after 4 seconds.
Subsequently, the resistance will be updated every second.
If there is any deteriorated insulation and the resistance is lower than
the reference value, do not measure the terminal N of procedure
10
.
Doing so may damage the solar battery panel. Check the reference
insulation resistance with safety regulations.
9
Turn off the
MEASURE
key.
If the
MEASURE
key is on, turn it off. (p. 16)
Discharge starts and the icon blinks. The icon may not be cleared
even if the discharge is completed because a voltage is generated by
the solar battery.
10
When measuring terminal P and insulation has not
deteriorated, connect the red test lead to the terminal N
of the string side and repeat the procedures
7
to
9
.
1
2
4
5
6
7
付録
索引
3
Summary of Contents for IR4055
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