Basic Measurements - ABB 615 series Technical Manual

1MAC059074-MB A
Section 8
8.1
8.1.1
615 series ANSI
Technical Manual
Measurement functions

Basic measurements

Functions
The three-phase current measurement function IA, IB, IC is used for monitoring and
metering the phase currents of the power system.
The three-phase voltage measurement function VA, VB, VC is used for monitoring and
metering the phase-to-phase voltages of the power system. The phase-to-ground voltages
are also available in VA, VB, VC.
The ground current measurement function IG is used for monitoring and metering the
ground current of the power system.
The ground voltage measurement function VG is used for monitoring and metering the
ground voltage of the power system.
The sequence current measurement I1, I2, I0 is used for monitoring and metering the
phase sequence currents.
The sequence voltage measurement V1, V2, V0 is used for monitoring and metering the
phase sequence voltages.
The frequency measurement f is used for monitoring and metering the power system
frequency.
The single-phase power and energy measurement SP, SE and the three-phase power and
energy measurement P, E is used for monitoring and metering the active power P, reactive
power Q, apparent power S, power factor PF and for calculating the accumulated energy
separately as forward active, reverse active, forward reactive and reverse reactive. P, E
calculates these quantities with the fundamental frequency phasors, that is, the DFT
values of the measured phase current and phase voltage signals.
The information of the measured quantity is available for the operator both locally in
LHMI or WHMI and remotely to a network control center with communication.
If the measured data in LHMI or WHMI is within parentheses, there are
some problems to express the data.
Section 8
Measurement functions
897