UNIGEAR DIGITAL PRO T E CTION RE LAYS
1VLG5 00007 E 11
2.2 Protection relays
UniGear Digital is supported by the following types of protection relays, shown in table
below.
Table 2: Protection relay key functionality overview for UniGear Digital
* Only available with IEC 61850-9-2LE
The above-mentioned protection relays support IEC 61850 Ed.2 and Ed.1 communication with
GOOSE messaging (performance class P1 / 1A) and 9-2LE stream (sample rate 4 kHz in case
of 50 Hz, 80 samples per cycle, 1 ASDU per frame). The IEC 61850-9-2LE interface is sup-
ported by the Relion
®
615, 620 and 640 series, including the PRP1 / HSR redundancy (RED615
only via fiber optic interfaces). The 615, 620 and 640 series work as a redundancy box
(Redbox) between the HSR / PRP1 networks and single attached devices or networks not
aware of PRP1 / HSR.
The 615, 620 and 640 series support the IEEE 1588 (PTPv2) and Power profile as defined in
IEEE C37.238 standard to reach the required timing accuracy over an Ethernet network. The
615, 620 and 640 series work as an ordinary clock (capable of acting as either a Master or a
Slave clock). There is no need to design a substation with two Grandmaster clocks to reach
redundancy because the 615, 620 and 640 series can work as Master clock. For more details
see 615, 620 and 640 series manuals.
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