Technical data

1MRS751108-MUM
REX 521
57
Protection Relay
Technical Reference Manual, General
5.2.6. Terminal connections
A051921
Fig. 5.2.6.-1 Rear view of REX 521 Basic
1
A051922
Fig. 5.2.6.-2 Rear view of REX 521 Medium
1
1. Service Pin is mounted if the HW version contains LON
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X4.2
X4.1
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X1
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Service pin
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X3.1
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CE
Made in Finland
X3.2
Tx
X3.3
Rx
Data A
Data B
RS-485
RearViewMedium
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X4.2
X4.1
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X1
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1
Service pin
X3.1
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10
CE
Made in Finland
X3.2
Tx
X3.3
Rx
Data A
Data B
RS-485