Chapter 5 Configuring the PM130 PLUS General Meter Setup
PM130 PLUS Powermeter Series_Installation Operation and Manual 90
Figure 5-7: General Setup Dialog Box – Device Options Tab
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:
• When the reactive power calculation mode is selected, active and reactive powers are measured
directly and apparent power is calculated as:
• 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 second
method is preferable.
• 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:
DC/AC Mode Setup
This device option is applicable for HACS CT device. Configures device for measuring either AC or DC
power supply. The DC/AC mode can be configured from the Front Display only.
Select OPtS from the main menu and choose the device option C.Mod. Select the mode for device
operation: aC for AC mode, dC for DC mode.
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