Tyco MX4428 - Cable Selection Considerations

MX4428 MXP Engineering / Technical Manual Document: LT0273
Analog Loop Design Considerations
Page 4-6 24 March 2006 Issue 1.5
MXP
MX DETECTOR LOOP
AL AR
+VE
+VE
-VE
-VE
S
P
U
R1
S
P
U
R2
S
P
U
R
3
S
P
U
R4
4 Isolator
Bases
(with or without
detectors)
L1 L1 L1 L1
MMM M
L2 L2 L2 L2
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
Universal Bases
,
Sounder Bases,
Relay Bases
NOTE : Total cable length < 2000m
Figure 4.2 STAR CONNECTION ON MXP
4.3 CABLE SELECTION CONSIDERATIONS
Selection of cable to implement the Analogue Loop requires specification of .....
(i) CABLE TYPE
(i.e. construction and choice of materials)
This is determined from consideration of .....
MECHANICAL - For instance, does the application
REQUIREMENTS specification, or prevailing standards, call for
fire rated, armoured, etc.