7.1.4.6
Technical data
Table 406:
CMMXU Technical data
Characteristic
Value
Operation accuracy
Depending on the frequency of the measured
current: f
n
±2 Hz
±0.5% or ±0.002 × I
n
(at currents in the range of 0.01...4.00 × I
n
)
Suppression of harmonics
DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
RMS: No suppression
7.1.4.7
Technical revision history
Table 407:
CMMXU Technical revision history
Technical revision
Change
B
Menu changes
C
Phase current angle values added to Monitored
data view. Minimum demand value and time
added to recorded data. Logarithmic demand
calculation mode added and demand interval
setting moved under Measurement menu as
general setting to all demand calculations.
D
Internal improvement.
E
Internal improvement.
7.1.5
Three-phase voltage measurement VMMXU
7.1.5.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Three-phase voltage measurement
VMMXU
3U
3V
7.1.5.2
Function block
GUID-5B741292-7FA6-4DEA-8D16-B530FD16A0FE V1 EN
Figure 176:
Function block
1MRS757454 D
Section 7
Measurement functions
611 series
363
Technical Manual
Summary of Contents for Relion 611 Series
Page 1: ... RELION PROTECTION AND CONTROL 611 series Technical Manual ...
Page 2: ......
Page 22: ...16 ...
Page 30: ...24 ...
Page 308: ...302 ...
Page 400: ...394 ...
Page 506: ...500 ...
Page 516: ...510 ...
Page 522: ...516 ...
Page 528: ...522 ...
Page 533: ...527 ...
Page 534: ......
Page 535: ......