Sel 411L - Applications

P.1.8
SEL-411L Relay Protection Manual Date Code 20151029
Introduction and Specifications
Applications
Applications
Use the relay in a variety of transmission line protection applications. For
information on connecting the relay, see Section 2: Installation.
The relay has two sets of three-phase analog current inputs, IW and IX, and
two sets of three-phase analog voltage inputs, VY and VZ. The drawings that
follow use a two-letter acronym to represent all three phases of a relay analog
input. For example, IW represents IAW, IBW, and ICW for A-, B-, and C-
phase current inputs on Terminal W, respectively. The drawings list a separate
phase designator if you need only one or two phases of the analog input set
(VAZ for the A-phase voltage of the VZ input set, for example).
87L Communication: 850 nm IEEE C37.94, Serial
Communications Medium: fiber
Connector Type: ST
Bay Position: Bay 1 or 2
Model Option Table Digit: C
87L Communication: 1300 nm, Serial
Communications Medium: fiber
Connector Type: ST
Bay Position: Bay 1 or 2
Model Option Table Digit: D
87L Communication: 1550 nm, Serial
Communications Medium: fiber
Connector Type: ST
Bay Position: Bay 1 or 2
Model Option Table Digit: E
87L Communication: 1300 nm IEEE C37.94, Serial
Communications Medium: fiber
Connector Type: ST
Bay Position: Bay 1 or 2
Model Option Table Digit: H
Table 1.1 Communications Cards Options (Excluding EIA-232 Card) (Sheet 2 of 2)
Card Description
850nm IEEE C37.94 FIBER
TX
RX
TX RX
1300nm FIBER
TX
RX
TX RX
1550nm FIBER
TX
RX
TX RX
1300nm IEEE C37.94 FIBER
TX
RX
TX RX