![ABB Relion REC615 Technical Manual Download Page 582](http://html.mh-extra.com/html/abb/relion-rec615/relion-rec615_technical-manual_3045253582.webp)
Table 591: 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
8.1.4.7
Technical revision history
Table 592: CMMXU Technical revision history
Technical revision
Change
B
Menu changes
C
Phase current angle values added to Moni-
tored data view. Minimum demand value
and time added to recorded data. Logarith-
mic demand calculation mode added and de-
mand interval setting moved under Measure-
ment menu as general setting to all demand
calculations.
D
Internal improvement.
E
Internal improvement.
8.1.5
Three-phase voltage measurement VMMXU
8.1.5.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE
C37.2 device
number
Three-phase voltage measure-
ment
VMMXU
3U
3V
8.1.5.2
Function block
Figure 295: Function block
8.1.5.3
Signals
Measurement functions
1MRS758755 C
582
REC615 & RER615
Technical Manual