Schweitzer Engineering SEL-351P, Quick Start Manual

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Settings
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 39
Settings Descriptions
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WARNING:
Anytime an EZ setting is changed, review all the EZ settings before enabling the new settings. Pay close
attention in circumstances where a setting was once set to OFF or N and then later turned on (enabled) – other related
settings may need to be turned on, though may still be set to OFF or N.
Settings Groups 1 (Main) and 2 (Alternate) EZ Settings
No. Setting Default Range Incr.
1 Control Identifier RECLOSER R1 0 - 9, A - Z, - , / , . , space
The Control Identifier setting contains the control installation designation (e.g., RECLOSER R1). This
identifier is listed at the top of event, history, meter, and status reports (see Table 2).
•
This setting may be up to 30 characters long.
•
This setting cannot be made via the front-panel interface.
No. Setting Default Range Incr.
2 Circuit Identifier FEEDER 2101 0 - 9, A - Z, - , / , . , space
The Circuit Identifier setting contains the greater circuit or substation designation (e.g., FEEDER 2101).
This identifier is listed at the top of event, history, meter, and status reports (see Table 2).
•
This setting may be up to 30 characters long.
•
This setting cannot be made via the front-panel interface.
No. Setting Default Range Incr.
3 CT Ratio 200.0 1.0-6000.0 0.1
The CT Ratio (current transformer [ct] ratio) setting programs the SEL-351P to operate with a recloser ct
ratio (e.g., for the common recloser ct ratio 200:1, the setting CT Ratio = 200.0 is made).
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WARNING: The following settings change in accordance to the CT Ratio setting:
Min. trip - phase (No. 5)
Min. trip - ground (No. 6)
Min. trip - SEF (No. 7)
No. Setting Default Range Incr.
4 PT Ratio 100.0 1.0-10000.0 0.1
The PT Ratio setting is the potential transformer (pt) ratio.
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For applications where single-phase 120 Vac power is the only voltage brought to the SEL-351P, the
pt ratio should still be entered, otherwise the SEL-351P voltage metering information will not be
accurate. Enter the effective power transformer ratio, relative to the 120 Vac secondary winding.
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When calculating the PTR, verify that the unit for the power transformer primary voltage is Vac not
kVac.