The digital busbar protection REB500 is divided into several hardware units. Bay units measure
the line and bus-tie breaker currents and may be installed close to the respective CTs. They
communicate with the central unit via a process bus. The central unit processes the current
signals measured by the bay units and distributes the tripping signals back to the bay units in
the event of an internal busbar fault. The system can be controlled by a local HMI (LHMI) on the
Central unit and Bay units, by comprehensive external HMI software, or a remote HMI over a
station bus connection. Communication with the station automation system (SAS) is possible
via the central unit.
When configuring the IP-address for the LHMI Ethernet port to the fixed value
of 192.168.0.1, a DHCP server functionality will be activated on this port. A
maximum of 10 IP addresses will be assigned automatically, when connected.
This functionality is available on the LHMI port only. Information on how to
configure different IP-addresses can be found in
Section 3
1MRK 500 132-UEN B
System overview
10
Distributed busbar protection REB500
Operation manual
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