ABB REF610 Technical Reference Manual page 141

1MRS755535
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Fig. 5.2.1.-1 Rear view of the relay with the fibre-optic communication module for plastic and glass fibrewith light
sensor inputs
Feeder Protection Relay
Technical Reference Manual - ANSI Version
X3.1
X4.1
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X2.1
REF610 REF610
A040188
141