GE Industrial Solutions Entellisys 5.0 Administrator Manual - Manual (Page 27)

RELT Groups 27
5
5.2 RELT Groups
RELT Groups are designed to offer protection options to the user. RELT Groups is a method by
which the administrator can setup breaker associations. This enables users, when selecting a
single breaker, the option of automatically selecting all other associated breakers.
When a user requests Single-point RELT on a breaker configured as an “initiating” breaker, the
user is offered a choice between Load Protection and Breaker Protection.
Initiating Breaker: The breaker which, when issued a Single-point RELT command, will give
the user the option of also changing the settings on the Member Breakers to RELT settings.
Member Breaker: Breakers associated with the Initiating Breaker.
Load Protection
When a user enables/disables Single-point RELT on a specific breaker AND selects Load
Protection only the selected breaker will use RELT settings.
Breaker Protection
When a user enables/disables Single-point RELT on a specific breaker AND selects Breaker
Protection, all grouped breakers will also be enabled/disabled at the same time. (See
Setup of
RELT Groups on page 27 )
NOTE: In order to turn off the entire group, the RELT “key” must be removed from the initiating
breaker.
Examples
•
In a lineup where a breaker is feeding downstream equipment, an operator can select Load
Protection on the feeder breaker before approaching the downstream equipment. Only the
feeder breaker will be operating on RELT settings.
•
In a double ended substation, the administrator may group the tie (the initiating breaker) and
both main breakers (the member breakers) together. This may be useful when the operator is
racking the tie breaker, the associated source breakers on either side of the tie will operate
on RELT settings. In this case the operator, when putting the tie into RELT, would select
Breaker Protection.
Setup of RELT Groups
1. On the Main Menu, click User Settings.
2. Click Overcurrent Protection, and then click RELT Groups.
3. Configure Member Breakers. For each “Initiating Breaker,” add select the Member Breakers
from the list of installed breakers.