ABB Relion RES670, Technical Manual, Page: 812 / 934

The NUM is equipped with a real time clock. It uses a capacitor to keep track of the
time when the IED is not energized.
The NUM is passively cooled, which is possible due to its low power dissipation.
23.2.2.3 Technical data
SEMOD55319-1 v1
SEMOD55310-2 v11
Table 630: SFP - Optical ethernet port
Quantity Rated value
Number of channels Up to 6 single or 3 redundant or a combination of
single and redundant links for communication using
any protocol
Standard IEEE 802.3u 100BASE-FX
Type of fiber 62.5/125
m
m multimode fibre
Wave length 1310 nm, Class 1 laser safety
Optical connector Type LC
Communication speed Fast Ethernet 100 Mbit/s
Table 631: SFP - Galvanic RJ45
Quantity Rated value
Number of
channels
Up to 6 single or 3 redundant or a combination of single and redundant links for
communication using any protocol
Standard IEEE 802.3u 100BASE-TX
Type of cable Cat5e FTP
Connector Type RJ45
Communication
Speed
Fast Ethernet 100 Mbit/s
GUID-96676D5D-0835-44DA-BC22-058FD18BDF34 v2
Table 632: NUM: Communication ports
NUM 4 Ethernet ports
1 Basic, 3 Optional
Ethernet connection type SFP Optical LC or Galvanic RJ45
Carrier modules supported OEM, LDCM
Section 23
1MRK 511 408-UUS A
IED hardware
806 Phasor measurement unit RES670 2.2 ANSI
Technical manual