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7. Others
7.7 Measurement Characteristics
■Metering actions in other than operation mode
Status
Several seconds just
after turning on the
auxiliary power supply
(Back light is lit, and
LCD is not lit.)
Setting mode,
Set value confirmation
mode
During power failure
■Metering actions in input status
Measurement items
Current (A)
At the 5A set of CT secondary current.
Current demand (DA)
: When input current is below 0.02A, it
At the 1A set of CT secondary current.
: When input current is below 0.008A, it
Voltage (V)
When input voltage is below 11V, it becomes
0V.
Active power (W)
When three-phase currents are all 0 or three-
Reactive power (var)
phase voltages are all 0, it becomes 0W,
Apparent power (VA)
0var and 0VA.
Power Factor (PF)
When three-phase currents are all 0 or three-phase voltages are all 0, it becomes 1.0.
Frequency (Hz)
When input voltage of phase 1 is 0V, it
becomes "----".
Harmonics
At measuring the RMS value
Voltage (HV)
: When input voltage is 0V, it becomes 0V.
: When the frequency is below 44.5Hz, "----"
Harmonics
At measuring the RMS value
Current (HI)
: When input current is 0A, it becomes 0A.
: When the frequency is below 44.5Hz, "----"
Note: Input current, input voltage and input power mean input to instrument. They are not to Primary sides of VT, CT.
■Analog output action
Output range
Measurement
No measurement
No display
Same actions
No display of
as in operation
measured
mode
value
No measurement
No display
becomes 0A.
becomes 0A.
(For each phase)
is displayed for all phases.
(For each phase)
is displayed for all phases.
Output limit setting is "ON".
Output limit setting is "OFF".
Display
Analog output
Output over
about 100% may
be made until
internal voltage
becomes stable.
Same actions
as in operation
mode
No output
Actions
When it exceeds the upper limit of the
display (9999), it becomes the upper limit of
the display (9999).
When N phase current exceeds the 150% of
the rating, it may not monitor the correct
measurements.
When it exceeds the upper limit of the
display (9999), it becomes the upper limit of
the display (9999).
When it exceeds the upper limit of the
display (9999), it becomes the upper limit of
the display (9999).
When it is below 44.5Hz or over 99.9Hz, "----"
is displayed.
At measuring the distortion ratio
: When input voltage is 0V, it becomes "----".
(For each phase)
: When the frequency is below 44.5Hz, "----"
is displayed for all phases.
At measuring the distortion ratio
: When input current is 0A, it becomes "----".
(For each phase)
: When the frequency is below 44.5Hz, "----"
is displayed for all phases.
Alarm contact point
Pulse output
Opened
No output
Status before
Same actions
getting into setting
as in operation
mode and set
mode
value confirmation
mode is kept.
Opened
No output
From -1% to 101% of span
From -5% to 105% of span
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