SET.20
of 32
SEL-351A Settings Sheets
Global Settings (Serial Port Command SET G and Front Panel)
SEL-351A Relay Instruction Manual Date Code 20080213
Date________________
Global Settings
(Serial Port Command SET G and Front Panel)
To avoid lost settings, enter global settings first if global settings PTCONN or VSCONN are going to
be changed. Refer to subsection In Some Applications, Make Global Settings (SET G) First on
page 9.1.
Voltage Input Configuration (See Settings for Voltage Input Configuration on
page 9.36)
(Changing the setting value of PTCONN or VSCONN will cause the relay to display the following
message:)
WARNING! The PTCONN or VSCONN setting was changed, which will cause the Group, Logic, and
Report settings to be reset to default values.
Save Changes(Y/N)? Y <Enter>
Are you sure (Y/N)? _
Phase Potential Transformer Connection (DELTA,WYE) PTCONN =
VS Channel Input (VS, 3V0)
VSCONN =
Settings Group Change Delay (See Multiple Setting Groups on page 7.18)
Group change delay (0.00–16000.00 cycles in 0.25-cycle steps) TGR =
Power System Configuration and Date Format (See Settings Explanations on
page 9.34)
Nominal frequency (50 Hz, 60 Hz) NFREQ
Phase rotation (ABC, ACB)
PHROT
Date format (MDY, YMD)
DATE_F
Front-Panel Display Operation (only on models with LCD—See Section 11)
Front-panel display time-out (OFF, 1–30 minutes in 1-minute
steps)
FP_TO =
[If FP_TO = OFF, no time-out occurs and display remains on last display screen (e.g., continually display metering).
Setting FP_TO = 0 is the same as OFF and is stored internally as OFF.]
Display update rate (1–60 seconds) SCROLD =
Front-panel neutral/ground display (OFF, IN, IG)
FPNGD =
Event Report Parameters (See Section 12)
Length of event report (15, 30 cycles) LER =
Length of prefault in event report
(1 to LER-1 cycles in 1-cycle steps)
PRE =
Courtesy of NationalSwitchgear.com
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