
2.23
Date Code 20170814
Instruction Manual
SEL-700G Relay
Installation
AC/DC Control Connection Diagrams
Figure 2.13
Analog Output Wiring Example
AC/DC Control Connection Diagrams
This section describes fail-safe versus nonfail-safe tripping, describes voltage
connections, and provides the ac and dc wiring diagrams.
Fail-Safe/Nonfail-Safe
Tripping
Figure 2.14 shows the output
OUT103
relay coil and Form C contact. When the
relay coil is de-energized, the contact between
A07
and
A08
is open while the
contact between
A07
and
A09
is closed.
Figure 2.14
Output OUT103 Relay Output Contact Configuration
The SEL-700G provides fail-safe and nonfail-safe trip modes (setting
selectable) for all output contacts. The following occurs in fail-safe mode:
➤
The relay coil is energized continuously if the SEL-700G is
powered and operational.
➤
When the SEL-700G generates a trip signal, the relay coil is de-
energized.
➤
The relay coil is also de-energized if the SEL-700G power
supply voltage is removed or if the SEL-700G fails (self-test
status is FAIL).
Figure 2.15 shows fail-safe and nonfail-safe wiring methods to control
breakers.
Analog Output
Relay Chassis Ground
Meter
or
PLC
AO_0 1
02
0 1
NOTE:
When using fast hybrid
output contacts, do not use the
FAILSAFE mode.
NOTE:
Fast hybrid contacts are
designed for fast closing (50
s) only.
Fail-safe mode operating time (time
to open the contacts) for fast hybrid
contacts is <8 ms (the same time as
for a normal output contact).
Contacts shown with
OUT103 relay coil de-energized
A07
A08
A09
OUT103
Relay Coil
Содержание SEL-700G Series
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