Technical data

1MRS751108-MUM
REX 521
43
Protection Relay
Technical Reference Manual, General
5.1.12.10. IEC 61850 communication by using SPA-ZC 402
REX 521 can communicate with the IEC 61850 protocol by connecting a
SPA-ZC 402 SPA/Ethernet adapter to the rear optical connection. The SPA-ZC 402
SPA/Ethernet adapter also offers the possibility to access the REX 521 relay with
the SPA protocol over TCP/IP using the same Ethernet link.
A060011
Fig. 5.1.12.10.-1 IEC61850-based substation automation system
5.1.12.11. Profibus-DPV1 communication by using SPA-ZC 302
The SPA-ZC 302 Profibus-DPV1/SPA Gateway is used to enable communication
between REX 521 and a Profibus system. The SPA-ZC 302 Gateway should be
connected to the RS485 port on REX 521 when used as a single SPA slave. If a SPA
loop is used, the optical rear port is used. In both cases, the SPA REAR parameter
should be set to the same baud rate as the SPA-ZC 302 Gateway.
A060012
Fig. 5.1.12.11.-1 Profibus-based substation automation system
REX 521
REF 543
REF 542plus
3rd party devices
SPA
GPS
Industrial
fiber-optic
Ethernet switch
To control
centers
Substation
Gateway
IEC61850-8
Station bus
SPA/Ethernet
adapters
SPA-ZC
400 and 402
Substation
Monitoring
And Controlling
System
REF 541
Uaux = 80...265 Vdc/ac
fn = 50 Hz
In = 1/5 A (I)
1MRS xxxxxx
98150
9509
Ion = 1/5 A (Io)
Un = 100/110 V (U)
Uon = 100/110 V (Uo)
21 kV
CB OK
AROFF
REX 521
READY START TRIP
FEEDER PROTECTION
Profibus DP
SPA RS-485
SPA-ZC 302
SPA-ZC 21
21
21
SPA-ZC 302
Single SPA slave
O
I
SPAC 331 C
SPA-ZC302
SPA-ZC302
Multiple SPA slaves on SPA Loop connection
Profibus
Master
REX 521
READY START TRIP
FEEDER PROTECTION
REX 521
READY START TRIP
FEEDER PROTECTION
Optical loop
REX 521
READY START TRIP
FEEDER PROTECTION