Led Status Indicators - GE Multilin 350 Series Instruction Manual

CHAPTER 3: INTERFACES

3.1.4 LED status indicators

350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
Courtesy of NationalSwitchgear.com
The ESCAPE key is also dual purpose. It is used to exit the sub-pages and to cancel a
setpoint change. The MESSAGE ◄ key can also be used to exit sub-pages and to cancel
setpoint changes.
The VALUE keys are used to scroll through the possible choices of an enumerated setpoint.
They also decrement and increment numerical setpoints.
The RESET key resets any latched conditions that are not currently active. This includes
resetting latched output relays, latched Trip LEDs, breaker operation failure, and trip / close
coil failures. The Autoreclose Scheme is also reset with the shot counter being returned to
zero and the lockout condition being cleared.
The MESSAGE ▲ and MESSAGE ▼ keys scroll through any active conditions in the relay.
Diagnostic messages are displayed indicating the state of protection and monitoring
elements that are picked up, operating, or latched.
• IN SERVICE: Green
This LED will be continuously "ON", when the relay is set to "Ready" under S1 RELAY
SETUP/INSTALLATION/RELAY STATUS, and no major self-test errors have been
detected.
• TROUBLE: Amber
This LED will turn "ON", when the relay is not programmed (Not Ready) state under S1
RELAY SETUP/INSTALLATION/RELAY STATUS, or upon detection of a major self-test
error. The relay will turn back to "IN-SERVICE" if no major self-test error is present.
• SETPOINT GROUP 1, 2: Green
These LEDs indicate the group of active protection elements. If setpoint group 1 is lit
green, only the protection elements under group 1 will be active. The protection
elements from group 2 will be inactive. The settings for each protection element can
be edited and displayed regardless of the active group.
• TRIP: Red
This indicator turns on when the relay detects a fault and sends a trip command to the
trip output relay. The LED will reset by initiating a reset command from either the
RESET pushbutton Breaker Control, or communications; in all cases after the fault
condition has cleared.
• ALARM: Amber
This LED will flash upon detection of an alarm condition, with element functions
selected as "alarm". The LED will automatically turn off if the alarm condition clears.
The LED will remain steady "ON", if the function of the operated protection was
selected as "latched alarm".
• PICKUP: Amber
This indicator will light ON upon pickup condition generated by any of the relay
features. The indicator will turn off if no pickup condition is detected.
• BREAKER OPEN: Red/Green – programmable
When the breaker is open, this indicator will be on continuously.
• BREAKER CLOSED: Red/Green – programmable
When the breaker is closed, this indicator will be on continuously.
Breaker status indication is based on the breaker's 52a and 52b contacts. With both
contacts wired to the relay, closed breaker status is determined by closed 52a contact
and opened 52b contact. Visa-versa the open breaker status is determined by opened
FRONT CONTROL PANEL INTERFACE
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