9-44
Setting the SEL-351P Recloser Control
Date Code 990430
SEL
-
351P Manual Técnico
Line length setting LL is unitless and corresponds to the line impedance settings. For example, if
a particular line length is 15 miles, enter the line impedance values (
Ω
secondary) and then enter
the corresponding line length:
LL
=
15.00
(miles)
If this length of line is measured in kilometers rather than miles, then enter:
LL
=
24.14
(kilometers)
Enable Settings
Refer to Settings Sheets 1, 2, and 18 of 23.
The enable settings on Settings Sheets 1 and 2 (E50P through EDEM) control the settings that
follow, through Sheet 11. Enable setting EBMON on Settings Sheet 18 controls the settings that
immediately follow it. This helps limit the number of settings that need to be made.
Each setting subgroup on Settings Sheets 2 through 12 has a reference back to the controlling
enable setting. For example, the neutral ground time-overcurrent elements settings on Sheet 5
(settings 51N1P through 51N1RS and 51N2P through 51N2RS) are controlled by enable setting
E51N.
Other System Parameters
Refer to Settings Sheet 18 of 23.
The global settings NFREQ and PHROT allow you to configure the SEL
-
351P to your specific
system.
Set NFREQ equal to your nominal power system frequency, either 50 Hz or 60 Hz.
Set PHROT equal to your power system phase rotation, either ABC or ACB.
Set DATE_F to format the date displayed in relay reports and the front-panel display. Set
DATE_F to MDY to display dates in Month/Day/Year format; set DATE_F to YMD to display
dates in Year/Month/Day format.
S
ETTINGS
S
HEETS
The settings sheets that follow include the definition and input range for most of the settings in
the SEL-351P. The settings sheets for the EZ settings are located at the end of the
Settings
section in the
SEL-351P Quick-Start Installation and User’s Guide
. See Table 9.1 for settings
sheets references.
Содержание SEL-351P
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