RFL Electronics RFL 9300 - Figure 3-17. Sub-Bus Protection

Remote breaker
(closed or open)
Open disconnect switch
(device 89)
Remote breaker
(closed or opened)
b. Remote terminal is single-breaker, with tapped load
(2-terminal system)
c. Remote terminal is double-breaker,
with or without tapped load
(2-terminal system)
d. Remote terminals are single-breaker, no tapped load
LOCAL REMOTE
Disconnect may or
may not open
May or may not have
tapped load
May or may not have
tapped load
LOCAL
REMOTE
REMOTE
Disconnect may or
may not open
LOCAL REMOTE
TAPPED LOAD
LOCAL
REMOTE
TAPPED LOAD
f. Remote terminals are double-breaker, or a combination
of double breaker and single breaker, with or without a
tapped load (3-terminal system)
e. Remote terminals are single-breaker, with tapped load
(3-terminal system)
(3-terminal system)
a. Remote terminal is single-breaker, no tapped load
(
2-terminal s
y
stem
)
Remote breaker
(closed or open)
Open disconnect
Switch (device 89)
LOCAL REMOTELOCAL REMOTE
STUB BUS
Figure 3-17. Sub-bus protection
RFL 9300 RFL Electronics Inc.
August 25, 2000 3 - 19 (973) 334-3100