ABB REQ650 User Manual

12.4 Measurements
12.4.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Measurements CVMMXN
P, Q, S, I, U, f
SYMBOL-RR V1 EN
-
Phase current measurement CMMXU
I
SYMBOL-SS V1 EN
-
Phase-phase voltage measurement VMMXU
U
SYMBOL-UU V1 EN
-
Current sequence component
measurement
CMSQI
I1, I2, I0
SYMBOL-VV V1 EN
-
Voltage sequence measurement VMSQI
U1, U2, U0
SYMBOL-TT V1 EN
-
Phase-neutral voltage measurement VNMMXU
U
SYMBOL-UU V1 EN
-
12.4.2 Application
Measurement functions is used for power system measurement, supervision and
reporting to the local HMI, monitoring tool within PCM600 or to station level for
example, via IEC 61850. The possibility to continuously monitor measured values of
active power, reactive power, currents, voltages, frequency, power factor etc. is vital
for efficient production, transmission and distribution of electrical energy. It provides
to the system operator fast and easy overview of the present status of the power
system. Additionally, it can be used during testing and commissioning of protection
and control IEDs in order to verify proper operation and connection of instrument
transformers (CTs and VTs). During normal service by periodic comparison of the
measured value from the IED with other independent meters the proper operation of
the IED analog measurement chain can be verified. Finally, it can be used to verify
1MRK 505 291-UEN A Section 12
Monitoring
261
Application manual

ABB REQ650 Specifications

General

Brand	ABB
Model	REQ650
Category	Protection Device
Language	English