Measurement
Conditions
Copyright © Itech Electronics Co., Ltd.
8
When the crest factor is 3:
Figure: Voltage Range
Figure: Current Range
NOTE
When EX1 or EX2 is installed, the power meter has more current range options. See details
in IT9121 Installation Instructions.
Voltage and current range
Set the measurement range according to the level of the effective value. When
the voltage or current signal is input into the input unit, there are two types of
range: fixed and automatic.
Fixed range
Select the required range from a number of options. After selection, the range
will not change with the input signal. For the voltage range, when the crest
factor is 3, the maximum option is “600V” and the minimum option is “15V”.
When the crest factor is 6, the maximum option is “300V” and the minimum
option is “7.5V”.
