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Parameter
Energy LED pulse
rate, Wh/pulse
Energy LED Test
Energy LED Pulse
source
Volts Scale, V
POWER CALCULATION MODES
The power calculation mode option allows you to change the method for calculating reactive and apparent powers in presence of
high harmonics. The options work as follows:
1. When the reactive power calculation mode is selected, active and reactive powers are measured directly and apparent
power is calculated as:
2
2
S = √ ( P
+ Q
)
This mode is recommended for electrical networks with low harmonic distortion, commonly with THD < 5% for volts, and THD <
10% for currents. In networks with high harmonics, the following method is preferable.
2. When the non-active power calculation mode is selected, active power is measured directly, apparent power is taken as
product S = V x I, where V and I are the RMS volts and amps, and reactive power (called non-active power) is calculated
as:
2
2
N = √ ( S
− P
)
Channel Assignments
The Channel Assignments setup allows you to link the device current terminals to submeters so they can monitor them.
Additionally, this setup allows you to specify the primary current rating of the current transformers connected to the device
terminals. The number of the selected current inputs for a submeter specifies if it will be a single-, two-, or three-phase meter.
Always select your submeters (both metering and totalization) in a sequence without gaps so that your device does not
occupy unnecessary network addresses.
To enter the setup dialog, select the device site from the list box on the Power Software toolbar, select General Setup from the
Meter Setup menu, and then click on the Channel Assignments tab.
Options
0.01-100.00
Disabled,
Wh Pulses,
varh Pulses
SubMeter 1,
SubMeter 2,
...
SubMeter 40
60-600 V
Default
5.40 Wh/pulse
LED pulse constant - the amount of accumulated energy (in
(one equivalent
secondary readings) giving one pulse via "Wh".
disk revolution)
Disabled
The type of accumulated energy giving pulses via "Wh" LED.
The submeter uses as source of accumulated energy giving
SubMeter 1
pulses via "Wh" LED.
The maximum voltage scale allowed, in secondary volts. See
600 V
Data Scales in Appendix E
31
MULTI-MON
Description
31-00035—01
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