ABB REB611 The relay is equipped with a four-line liquid crystal display

Local HMI

The relay is equipped with a four-line liquid crystal display.

Depending on the chosen font and language, the number of

visible lines may vary. The display is designed for entering

parameter settings of the protection and control functions. It is

also suited for remotely controlled substations where the relay

is only occasionally accessed locally via the front panel user interface.

The display offers front-panel user interface functionality with

menu navigation and menu views. Depending on the

configuration, the relay displays the related measuring values.

The local HMI includes a push button (L/R) for local/remote

operation of the relay. When the relay is in the local mode, it can

be operated only by using the local front-panel user interface.

When the relay is in the remote mode, it can execute

commands sent from a remote location. The relay supports the

remote selection of the local/remote mode via a binary input.

This feature facilitates, for example, the use of an external

switch at the substation to ensure that all relays are in the local

mode during maintenance work and that the circuit breakers

cannot be operated remotely from the network control center.

Mounting methods

By means of appropriate mounting accessories, the standard

relay case can be flush mounted, semi-flush mounted or wall

mounted. The flush mounted and wall mounted relay cases can

also be mounted in a tilted position (25°) using special accessories.

Further, the relays can be mounted in any standard 19”

instrument cabinet by means of 19” mounting panels available

with cut-outs for one or two relays.Alternatively, the relays can

be mounted in 19” instrument cabinets by means of 4U

Combiflex equipment frames.

For routine testing purposes, the relay cases can be equipped

with test switches, type RTXP 18. which can be mounted side

by side with the relay cases.