49
PVΩ Measurement Function (Model IR4053 and IR4055 only)
Power conditioner, main switch
Disconnector devices
N terminal
(Black)
Ground
terminal
(Red)
P terminal
String
10
7
ON
9
OFF
7
Press and hold 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. (p. 68)
8
Check the resistance displayed after approx. 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
mark blinks. The mark 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
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