ABB REG316 4 Series - Measurement Function; Measurement Functions

REG 316*4 1MRB520049-Uen / Rev. F ABB Switzerland Ltd
3-323
3.7. Measurement functions
3.7.1. Measurement function (UIfPQ)
A. Application
Measurement of voltage, current, real and apparent power and
frequency, e.g. for display on the monitor of the control unit or for
transferring to a high level station control system for further
processing.
B. Features
· single-phase measurement (1 voltage and 1 current I/P)
· phase-to-ground or optionally phase-to-phase voltage meas-
urement (providing three-phase Y connected v.t’s are in-
stalled)
· evaluation of the fundamental frequency components
· high accuracy in the frequency range (0.9 ... 1.1) f
N
· frequency of voltage measured unless voltage too low, in
which case current is measured; if both are too low, the result
is set to rated frequency
· at least 1 measurement per second
· filters for voltage and current DC components
· filters for voltage and current harmonics
· provision for compensation of connection and measurement
phase errors.
C. Inputs and outputs
I. C.t./v.t. inputs
· voltage
· current
II. Binary inputs
· none
III. Binary outputs
· none
IV. Measurements:
· voltage (unit UN)
· current (unit IN)
· real power (unit PN (P))
· apparent power (unit PN (Q))
· frequency (unit Hz).