Settings
52
SEL-351P Quick-Start Installation and User's Guide (Portuguese)
Setting
Default
Range
Incr.
Time delay - phase high
current trip
0.00
0-16000.00 cycles
0.25 cyc.
The
Time delay - phase high current trip
setting programs an intentional time delay for the phase
high current tripping. If set to zero (0), phase high current tripping operates instantaneously.
•
This setting is hidden and set to zero (0) if
High current trip - phase
is set to N.
Setting
Default
Range
Incr.
Activate high current trip -
phase
OFF OFF,
1-5
1
The
Activate high current trip - phase
setting determines when phase high current tripping is enabled
(e.g., if
Activate high current trip - phase
= 2, then phase high current tripping is enabled for the
second [2nd] trip operation and every following trip operation).
The setting range for
Activate high current trip - phase
adjusts according to
Operations to lockout -
phase
(e.g., if
Operations to lockout - phase
= 4, then the range for
Activate high current trip -
phase
is from 1 to 4).
•
This setting is hidden and set to OFF if
High current trip - phase
is set to N.
No.
Setting
Default
Range
Incr.
30
High current trip - ground
N
Y/N
The
High current trip - ground
setting enables the following three settings for ground high current tripping,
if set to Y. Ground high current tripping is not affected by the cold load pickup scheme.
•
This setting is hidden and set to N if
Fast curve - ground
(No. 9) and
Delay curve - ground
(No. 11) are
both set to OFF.
Setting
Default
Range
Incr.
High current trip - ground
OFF
OFF, 1.00-79.99 multiples of Min.
trip - ground
0.01
The
High current trip - ground
(multiples of
Min. trip - ground
) setting determines the ground
current threshold for ground high current tripping.
Example: If
High current trip - ground
= 44.00 (multiples of
Min. trip - ground
) and
Min. trip -
ground
(No. 6) = 50.00 Amps primary, then the ground current threshold for ground high
current tripping operates at a value equal to:
44.00
•
50.00 Amps primary = 2200.00 Amps primary
The upper limit of this setting (80.00 multiples) is calculated from the Amps secondary range upper
limit [20] and settings
CT Ratio
(No. 3) [200.0] and
Min. trip - ground
(No. 6) [50.00]:
(20
•
200.0)/50.00 = 80.00 multiples (upper limit)
Due to processor calculations and rounding techniques, displayed range numbers may appear slightly
different than expected (e.g., 79.99 instead of 80.00).
•
This setting is hidden and set to OFF if
High current trip - ground
is set to N.
Setting
Default
Range
Incr.
Time delay - ground
high
current trip
0.00
0-16000.00 cycles
0.25 cyc.
The
Time delay - ground
high current trip
setting programs an intentional time delay for the ground
high current tripping. If set to zero (0), ground high current tripping operates instantaneously.
•
This setting is hidden and set to zero (0) if
High current trip - ground
is set to N.
Содержание SEL-351P
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