Mitsubishi Electric ME96NSR, Руководство пользователя

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53
7. Others
7.7 Measurement Characteristics
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Analog output action
Note: Input current, input voltage and input power mean input to instrument. They are not to Primary sides of VT, CT.
Current (A)
Current demand (DA)
Voltage (V)
Active power (W)
Reactive power (var)
Apparent power (VA)
Power Factor (PF)
Frequency (Hz)
Harmonics
Voltage (HV)
Harmonics
Current (HI)
At the 5A set of CT secondary current.
: When input current is below 0.02A, it
becomes 0A.
At the 1A set of CT secondary current.
: When input current is below 0.008A, it
becomes 0A.
When input voltage is below 11V, it becomes
0V.
When three-phase currents are all 0 or three-
phase voltages are all 0, it becomes 0W,
0var and 0VA.
When input voltage of phase 1 is 0V, it
becomes “----”.
At measuring the RMS value
: When input voltage is 0V, it becomes 0V.
(For each phase)
: When the frequency is below 44.5Hz, “----”
is displayed for all phases.
At measuring the RMS value
: When input current is 0A, it becomes 0A.
(For each phase)
: When the frequency is below 44.5Hz, “----”
is displayed for all phases.
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.
Measurement items Actions
When three-phase currents are all 0 or three-phase voltages are all 0, it becomes 1.0.
Output range
Output limit setting is “ON”.
Output limit setting is “OFF”.
From -1% to 101% of span
From -5% to 105% of span
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
No measurement
Same actions
as in operation
mode
No measurement
No display
No display of
measured
value
No display
Output over
about 100% may
be made until
internal voltage
becomes stable.
Same actions
as in operation
mode
No output
Opened
Status before
getting into setting
mode and set
value confirmation
mode is kept.
Opened
No output
Same actions
as in operation
mode
No output
Status Measurement Display Analog output Alarm contact point Pulse output
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Metering actions in other than operation mode
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Metering actions in input status