GE Multilin 469

56 469 MOTOR MANAGEMENT RELAY – QUICK REFERENCE GUIDE
SYSTEM DATA QUICK REFERENCE GUIDE
bus shot down; in most cases, the second trip command energizes a lock out relay (86)
which is used to trip the upstream breakers
ASSIGN BACKUP RELAYS: “Auxiliary3”
SHORT CIRCUIT TRIP BACKUP DELAY: “200 ms” - this time must be greater than the
total time required to trip the main breaker plus a margin
Since the specifications do not indicate values for the following features, they must be left
“Off”:
OVERLOAD ALARM: “Off”
MECHANICAL JAM: “Off”
UNDERCURRENT: “Off”
PHASE DIFFERENTIAL: “Off”
For the Ground Fault element, enter the following values in the
S6 CURRENT ELEMENTS ZV
GROUND FAULT
page. Press the MESSAGE T key after each setpoint is entered to move to
the next message.
GROUND FAULT OVERREACH FILETER: “Off” – no filtering of DC component is required
GROUND FAULT ALARM: “Off” – default setting, no Alarm is required
ASSIGN ALARM RELAYS: “Alarm” – default setting
GROUND FAULT ALARM PICKUP: “0.10 x CT” – default setting
INTENTIONAL GF ALARM DELAY: “0 ms” – default setting
GROUND FAULT ALARM EVENTS: “Off” – default setting
GROUND FAULT TRIP: “Latched” – the output relay will remind energized until the Reset
command executed
ASSIGN TRIP RELAYS: “Trip”
GROUND FAULT TRIP PICKUP: “0.20 x CT”
INTENTIONAL GF TRIP DELAY: “0 ms”
GROUND FAULT TRIP BACKUP: “On”
ASSIGN BACKUP RELAYS: “Auxiliary3” - same relay assigned for the Short Circuit Trip
Backup
GROUND FAULT TRIP BACKUP DELAY: “200 ms” - same time delay assigned to the Short
Circuit Trip Backup
For the Current Unbalance element, enter the following values in the
S6 CURRENT
ELEMENTS ZV CURRENT UNBALANCE page. Press the MESSAGE T key after each setpoint
is entered to move to the next message.
CURRENT UNBALANCE ALARM: “Unlatched”
ASSIGN ALARM RELAYS: “Alarm”
CURRENT UNBALANCE ALARM PICKUP: “10%”
CURRENT UNBALANCE ALARM DELAY: “10 s”
CURRENT UNBALANCE ALARM EVENTS: “On”
CURRENT UNBALANCE TRIP: “Latched” – the output relay will remind energized until the
Reset command executed
ASSIGN TRIP RELAYS: “Trip”
CURRENT UNBALANCE TRIP PICKUP: “20%”
CURRENT UNBALANCE TRIP DELAY: “5 s”