30309828
Issue 1.02
Features
Automatically isolating short circuit part on the
loop and automatically restoring it when short
circuit is corrected.
Used as detector base.
Standard: EN54-17.
Description
In loop type fire alarm system, it often occurs that
partial short circuit of loop affects the whole system.
C-9504E Base Mount Short Circuit Isolator can isolate
the shorted circuit from the whole system to ensure
normal operation of the remaining parts and locate the
failed part by illuminating a yellow indicator. When the
short circuit fault is cleared, the shorted part will be
restored.
The isolator is applicable to all loop type fire alarm
systems, either Class A or Class B loop.
Connection and Cabling
Fig. 1 shows terminals on the isolator.
Fig. 1
Connection Description:
IN+, IN-: Input end of loop. IN+ is positive, and IN-
negative.
R+, R-: Remote indicator output. R+ is positive, and R-
negative.
OUT+, OUT-: Output of loop. OUT+ is positive, and
OUT- negative.
Recommended Cabling:
1.0mm
2
or above fire cable for loop, subject to local
codes.
Installation
The mounting of C-9504E isolator is shown in Fig. 2.
Isolator
Conduit
Back Box
Fig. 2
Application
Polarity-sensitive external connections, input and
output can be used inversely without direction. Electric
connection is shown in Fig. 3.
Loop Out-
Loop IN-
Loop IN+
Loop Out+
Fig. 3
C-9504E
Base Mount Short Circuit Isolator
布线管
86H50
预埋盒
B-9310
后备盒
布线管
模块
模块
Detector Isolator
548n/02
0832-CPR-F0034
GST-0017-01
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