Settings
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 53
Setting Default Range Incr.
Activate high current trip -
ground
OFF OFF, 1-5 1
The Activate high current trip - ground setting determines when ground high current tripping is
enabled (e.g., if Activate high current trip - ground = 2, then ground high current tripping is enabled
for the second [2nd] trip operation and every following trip operation).
The setting range for Activate high current trip - ground adjusts according to Operations to
lockout - ground (e.g., if Operations to lockout - ground = 4, then the range for Activate high
current trip - ground is from 1 to 4).
• This setting is hidden and set to OFF if High current trip - ground is set to N.
No. Setting Default Range Incr.
31 High current lockout - phase N Y/N
The High current lockout - phase setting enables the following two settings for phase high current lockout, if
set to Y. Phase high current lockout is not affected by the cold load pickup scheme.
• This setting is hidden and set to N if Fast curve - phase (No. 8) and Delay curve - phase (No. 10) are
both set to OFF.
Setting Default Range Incr.
High current lockout - phase OFF OFF, 1.00-19.99 multiples of Min.
trip - phase
0.01
The High current lockout - phase (multiples of Min. trip - phase) setting determines the exceeded
phase current threshold at which the SEL-351P goes to the lockout state immediately when tripping.
Example: If High current lockout - phase = 13.00 (multiples of Min. trip - phase) and Min. trip -
phase (No. 5) = 200.00 Amps primary, then the phase current threshold for phase high
current lockout operates at a value equal to:
13.00 • 200.00 Amps primary = 2600.00 Amps primary
The upper limit of this setting (20.00 multiples) is calculated from the Amps secondary range upper
limit [20] and settings CT Ratio (No. 3) [200.0] and Min. trip - phase (No. 5) [200.00]:
(20 • 200.0)/200.00 = 20.00 multiples (upper limit)
Due to processor calculations and rounding techniques, displayed range numbers may appear slightly
different than expected (e.g., 19.99 instead of 20.00).
• This setting is hidden and set to OFF if High current lockout - phase is set to N.
Setting Default Range Incr.
Activate high current
lockout - phase
OFF OFF, 1-5 1
The Activate high current lockout - phase setting determines when phase high current lockout is
enabled (e.g., if Activate high current lockout - phase = 3, then phase high current tripping is
enabled for the third [3rd] trip operation and every following trip operation).
The setting range for Activate high current lockout - phase adjusts according to Operations to
lockout - phase (e.g., if Operations to lockout - phase = 4, then the range for Activate high current
lockout - phase is from 1 to 4).
• This setting is hidden and set to OFF if High current lockout - phase is set to N.
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