P.2.26
SEL-411L Relay Protection Manual Date Code 20151029
Installation
Connection
Rear-Panel Layout
Figure 2.22–Figure 2.26 show some of the available relay rear panels.
All relay versions have screw terminal connectors for I/O, power, and battery
monitor.
You can order the relay with fixed terminal blocks for the CT and PT
connections, or you can order SEL Connectorized rear-panel configurations
that feature plug-in/plug-out PT connectors and shorting CT connectors for
relay analog inputs. Figure 2.26 shows the Connectorized 6U horizontal
configuration of the SEL-411L.
The screw terminal connections for the INT2 and the INT7 I/O interface
boards are the same. The INTE I/O interface board has control output
terminals grouped in threes, with the fourth terminal as a blank additional
separator (Terminals 4, 8, 12, 16, 20, 24, 28, and 32). The INTC high speed
(marked HS) and INTE I/O interface boards both contain high-speed,
high-current interrupting control outputs, but use a different terminal
layout—see Control Outputs for details.
For more information on the I/O interface board control inputs and control
outputs, see I/O Interface Board Jumpers.
Figure 2.22 5U Rear, Main Board With EIA-422 Serial Communications Card in Bay 1, INT2 (200 Slot) and INTE
(300 Slot) Interface Boards
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