Settings
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 55
No. Setting Default Range Incr.
33 Cold load pickup scheme N Y/N
The Cold load pickup scheme setting enables the cold load pickup scheme when set to Y.
• This setting is hidden and set to N if Delay curve - phase (No. 10) is set to OFF and Delay curve -
ground (No. 11) is set to OFF.
• If Cold load pickup scheme is set to Y, then you are prompted to program the following settings:
Setting Default Range Incr.
Cold load pickup - phase OFF OFF, 1.00-19.99 multiples of Min.
trip - phase
0.01
The Cold load pickup - phase setting determines the phase current threshold for overcurrent detection
when the Cold load pickup scheme is active.
Example: If Cold load pickup - phase = 1.70 (multiples of Min. trip - phase), Min. trip - phase
(No. 5) = 200.00 Amps primary, and the cold load pickup scheme is active, then the phase
current threshold for overcurrent detection operates at a value equal to:
1.70 • 200.00 Amps primary = 340.00 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).
• If Cold load pickup - phase is set to OFF, then the phase current threshold for overcurrent
detection remains unchanged (threshold remains equal to Min. trip - phase [No. 5]).
• This setting is hidden and set to OFF if Cold load pickup scheme is set to N or
Delay curve -
phase (No. 10) is set to OFF.
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