5.3 Measurement specifications
143
Integration Measurement Specifications
Integration operation
modes
Switchable between fixed-range integration and auto-range integration.
Fixed-range integration
Integration can be performed for all voltage and current ranges.
The voltage and current ranges are fixed once integration starts.
Other settings continue to be in effect.
The current range keys are disabled.
Auto-range integration
Integration can be performed for all voltage ranges.
The current is set to auto-range operation using ranges from 200 mA to 20 A.
(The current AUTO lamp will light up.)
If the operating mode is set to auto-range integration, the AUTO lamp to the left of
the START/STOP key will light up.
When integration starts, the voltage range is fixed, and the timeout value is set to 0.1 s.
The integrated value for each range can be displayed by switching the current range
(200 mA to 20 A) while integration is stopped.
Measurement items and
display
Simultaneous integration of the following 6 parameters:
Positive current integrated value (displayed as Ah+ on panel display)
Negative current integrated value (displayed as Ah- on panel display)
Sum of current integrated values (displayed as Ah on panel display)
Positive active power integrated value (displayed as Wh+ on panel display)
Negative active power integrated value (displayed as Wh- on panel display)
Sum of active power integrated values (displayed as Wh on panel display)
When the TOTAL lamp is lit up on the integration display
In auto-range integration mode, the sum of integrated values for all ranges is dis-
played.
In fixed-range integration mode, the integrated value for the range being shown is
displayed.
When the TOTAL lamp is turned off on the integration display
The integrated value for the range being shown is displayed.
Measurement types Rectifiers: AC+DC, AC+DC Umn
Current: Displays the result of integrating current RMS value data (display val-
ues) once every display update interval as an integrated value.
Active power: Displays the result of integrating active power values by polarity cal-
culated once every cycle for the selected synchronization source as
integrated values.
Rectifier: DC
Displays the result of integrating instantaneous data obtained by sampling both cur-
rent and active power by polarity as integrated values (these values are not integrat-
ed values for the DC component when active power contains both DC and AC
components)
Integration time 1 min. to 10,000 hr., settable in 1 min. blocks
Default value: 10,000 hr. (0000.00 display)
Integration time accuracy ±0.01% rdg. ±1 dgt.
Integration measurement
accuracy
(Current or active power measurement accuracy) + (±0.01% rdg. ±1 dgt.)
Effective measuring range Until PEAK OVER U lamp or PEAK OVER I lamp lights up.
However, the range is defined only if the input voltage and current are 1% or more of
the corresponding ranges.
Display resolution 999999 (6 digits + decimal point)
Peak exceeded warning If PEAK OVER U lamp or PEAK OVER I lamp lights up during integration operation, the
unit (Ah, Ah+, Ah-, Wh, Wh+, Wh-) will flash.
Invalid data display Displays [- - - - -] when using the AC or FND rectifier.
* In auto-range integration mode, [- - - - -] will be displayed.
: Displayed −: Displays [- - - - -]
Rectifier Ah+ Ah- Ah Wh+ Wh- Wh
AC+DC, AC+DC Umn − − *
DC
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