YOKOGAWA WT1800, Руководство пользователя

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2-11
IM WT1801-01EN
Current Range (RANGE UP/DOWN (A))
The current range can be fixed (when auto range is set to off) or determined automatically (when auto range is
set to on).
Fixed Ranges
When the current range is fixed, you can select a range from the available options. The selected current range
does not change even if the amplitude of the input signal changes. Set the range in reference to the rms value of
the input signal.
For 5 A Input Elements
• When the
Crest Factor Is Set to CF3
You can select from 10 mA, 20 mA, 50 mA, 100 mA, 200 mA, 500 mA, 1 A, 2 A, and 5 A.
• When the Crest Factor Is Set to CF6
You can select from 5 mA, 10 mA, 25 mA, 50 mA, 100 mA, 250 mA, 500 mA, 1 A, and 2.5 A.
For 50 A Input Elements
• When the Crest Factor Is Set to CF3
You can select from 1 A, 2 A, 5 A, 10 A, 20 A, and 50 A.
• When the Crest Factor Is Set to CF6
You can select from 500 mA, 1 A, 2.5 A, 5 A, 10 A, and 25 A.
Auto Range
This is the same as the auto range feature for voltage.
Click here.
• When the secondary output of a CT (current transformer) or a clamp-type current sensor that outputs
current is being applied to the current input terminal, set the current range according to the maximum value
of the CT or current sensor output. Then, use the scaling feature to set the CT ratio or the conversion ratio
of the clamp-type current sensor that outputs current.
Auto Current Range (AUTO (A))
This is the same as the auto range feature for voltage.
Click here.
2 Fundamental Measurement Conditions