ABB RELION Series User Manual

8.1.4.6 Technical data
Table 572: 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 573: 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.
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 measurement VMMXU 3U 3V
8.1.5.2 Function block
GUID-5B741292-7FA6-4DEA-8D16-B530FD16A0FE V1 EN
Figure 296: Function block
1MRS758755 A Section 8
Measurement functions
REC615 and RER615 565
Technical Manual

ABB RELION Series Specifications

General

Product Series	RELION
Category	Control Unit
Analog Outputs	Up to 8
Product Type	Protection and Control IED
Communication Protocols	IEC 61850, Modbus, DNP3
Input Voltage	24-250 V DC / 110-230 V AC
Protection Functions	Overcurrent, Overvoltage, Undervoltage, Earth fault, Frequency