4
SEL-FT50/SEL-FR12 Fault Transmitter and Receiver System
Instruction Manual
Date Code 20210405
System Overview
System Overview
Figure 2
provides an overview of the SEL-FT50/SEL-FR12 system and illus-
trates how to apply it across a distribution power system.
The SEL-FT50/SEL-FR12 system components are easy to use, and they contain
many powerful and innovative features. Use programmable logic in the
SEL-651R or in connected relays to incorporate the new protection capabilities
and achieve the benefits shown in
Figure 2
.
Figure 3
depicts the key components of the FT50-0001/FT50-0003/FT50-0005/
FT50-0006 models. The other product variants FT50-0004/FT50-0007 have
identical interior features and similar exterior features.
Figure 2
SEL-FT50/SEL-FR12 System
-- need updated drawing
NOTE:
The SEL-RP50 is not available
in all markets. See
Table 13
.
Figure 3
SEL-FT50 Overview
Shotgun stick loop
Current transformer
Twistlock housing
for setting access
Omnidirectional antenna for
the radio transmitter
Left control (DIP)
switch bank
SW 1–4 Unit ID
SW 5–8 Network ID
Right control (DIP)
switch bank
SW 6–8 fault pickup
Conductor stop
Spring for secure installation
