GE M60 Instruction Manual page 341

5 SETTINGS 5.7 CONTROL ELEMENTS
In most breaker control circuits, the trip coil is connected in series with a breaker auxiliary contact which is open when the
breaker is open (see diagram below). To prevent unwanted alarms in this situation, the trip circuit monitoring logic must
include the breaker position.
Figure 5–114: TRIP CIRCUIT EXAMPLE 1
Assume the output contact H1 is a trip contact. Using the contact output settings, this output will be given an ID name; for
example, "Cont Op 1". Assume a 52a breaker auxiliary contact is connected to contact input H7a to monitor breaker status.
Using the contact input settings, this input will be given an ID name, for example, "Cont Ip 1", and will be set "On" when the
breaker is closed. The settings to use digital element 1 to monitor the breaker trip circuit are indicated below (EnerVista UR
Setup example shown):
5
The setting should be greater than the operating time of the breaker to avoid nuisance alarms.
PICKUP DELAY
NOTE
GE Multilin M60 Motor Protection System 5-203