Technical Data - ABB RELION REX640 Technical Manual

1MRS759142 C
8.1.7.8
8.1.8
8.1.8.1
8.1.8.2
8.1.8.3
8.1.8.4
REX640
Technical Manual

Technical data

Table 1243: RESCMMXU Technical data
Characteristic
Operation accuracy
Suppression of harmonics
Residual voltage measurement RESVMMXU
Identification
Function description
Residual voltage measurement
Function block
GUID-23C4EBAA-DBF1-4BD7-8F1D-D685C6C4C9EF V2 EN
Figure 707: Function block
Functionality
The residual voltage measurement function RESVMMXU provides limit value
supervision output (HIGH_ALARM, HIGH_WARN). Setting parameters On delay time
and Off delay time are used for controlling the activation and, respectively, the
deactivation of alarm and warning outputs.
Instantaneous residual voltage in volt is available for application configurations
through output U_INST_RES. The residual voltage demand value in volt is for
connecting to Load profile recorder (LDPRLRC) through output U_DMD_RES.
Analog channel configuration
RESVMMXU has one analog group input which must be properly configured.
Table 1244: Analog inputs
Input
URES
Measurement functions
Value
At the frequency f = f
±0.5% or ±0.002 × I
(at currents in the range of 0.01...4.00 × I
DFT: -50 dB at f = n × f
RMS: No suppression
IEC 61850 IEC 60617
identification identification
RESVMMXU Uo
Description
Residual voltage (measured or calculated)
Section 8
n
n
)
n
, where n = 2, 3, 4, 5,...
n
ANSI/IEEE C37.2
device number
VG/VN
1313