3UG4625 residual current monitoring relay with 3UL23 transformer
8.6 Circuit diagrams
3UG4 / 3RR2 monitoring relays
206 Manual, 05/2016, NEB927043002000/RS-AC/004
Internal circuit diagrams
Internal circuit diagrams 3UG4625
3UG4625-.CW30 residual current monitoring relay, 24 to 240 V
residual current monitoring relays are suitable for operation with 3UL23 residual
current transformers for external ground
-fault monitoring. The output signal of the
residual current transformer is connected to terminals C1 and C2 of the monitoring
relay. To avoid interference injection, which could result in incorrect measurements, these
connecting lines must be routed as
parallel as possible and twisted, or shielded cables must
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