2-4 Relay Element Settings
Date Code 20020206 SEL-300G Instruction Manual
The relay protects the generator using one setting group at a time. You control which setting
group is enabled using serial port commands and settings provided in the Global setting category.
The relay always uses the Global settings, regardless of which setting group presently is enabled.
The Global settings define:
• SEL
OGIC Control Equations for setting group selection,
• Breaker monitor function settings,
• Optoisolated input debounce timer settings,
• Local bit settings,
• Front-panel display settings, and
• Display point settings.
Settings configuring the relay Sequential Events Recorder (SER) function are entered using the
SET R command. These settings are always active, regardless of whether setting Group 1 or
setting Group 2 is enabled.
This section of the instruction manual describes each protection function. The outputs from each
function are defined, and setting recommendations or guidelines for their calculation are
provided. Where appropriate, logic diagrams and element operating characteristic diagrams also
are provided.
Section 3: Auxiliary Function Settings describes settings for the demand meter, dc monitor,
setting group selection, breaker monitor, optoisolated input debounce timers, and the SER
function settings.
Section 4: SEL
OGIC
®
Control Equations describes SELOGIC Control Equations in general, and
the trip, close, event trigger, and output contact control equations in particular.
Refer to Section 6: Enter Relay Settings for complete relay Settings Sheets showing each of the
relay settings and their ranges in the order that they are entered.
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