Siemens 7SR45 Argus User Manual page 106

Relay
Applications
7SR45 Argus 1. CT circuits shown are
Relay with connected to 1 A or 5 A of
Phase and
7SR45 Argus Relay.
CBCT
Measurement
2. CT and Earth connections are
typical only.
3. Measures the phase current
and earth current of the Primary
CT only.
4. Application shows the use of
50/51/50N/51N/50LC/50G/51G
protection functions.
5. Remote trip via Communication
(through BO with Auxiliary input
present) and Binary input is
possible.
7SR45 Argus
Relay with 1. CT circuits shown are
Earth Fault connected to 1 A or 5 A of
Application 7SR45 Argus Relay.
2. CT and Earth connections are
typical only.
3. Measures the earth current of
the Primary CT only.
4. Application shows the use of
50G/51G protection functions.
5. Remote trip via Communication
(through BO with Auxiliary input
present) and Binary input is
possible.
© 2018 Siemens Protection Devices Limited
Description
Figure 1-17 7SR45 Argus Relay with Phase and CBCT Measurement Application
Figure 1-18
Chapter 5 - 7SR45 Installation Guide
Connections
IL1 IL2 IL3
Standard release
IL1 IL2 IL3
Standard release
7SR45 Argus Relay with Earth Fault Application
7SR45
L
IL1
24 V to 60 V DC
60 V to 240 V DC/AC
N
IL2
BO
IL3
IL4
Battery
7SR45
L
IL1
24 V to 60 V DC
60 V to 240 V DC/AC
N
IL2
BO
IL3
IL4
Battery
Chapter 5 Page 12 of 12