EQUIPMENT:
T1216W-C
PUBLICATION:
MARINEW-P-I
ISSUE No. & DATE:
1
11/12
© 2012 Thorn Security Ltd
PAGE 35 of 39
Registered Company: Thorn Security Ltd. Registered Office: Dunhams Lane Letchworth Garden City Hertfordshire SG6 1BE
12. Wiring Diagrams
L
N
L
N
AC OUT
AC
O
UT
L
N
L
N
EMERGENCY
EM
ER
GE
NC
Y
L
N
L
N
PRIMARY
PR
IM
AR
Y
0V DC
+24V DC
0V
D
C
+2
4V
D
C
TB
4
TB
3
TB
2
TB
1
A1715 Mains AC Change-Over Unit
Motherboard
INCOMING
EMERGENCY
AC MAINS
SUPPLY
INCOMING
PRIMARY
AC MAINS
SUPPLY
OUTGOING
AC MAINS
SUPPLY TO
PANEL
INCOMING
24Vdc
SUPPLY
FROM PANEL
24V 0V
AUX D.C.
24V 0V
+
-
4
S
IL
E
V
A
C
R
S
T
.
Panel Motherboard
Auxiliary 24Vdc Terminals
Mains Terminal Block
On Panel Chassis
Mains fuse
INCOMING AC
MAINS SUPPLY
FROM AC
SWITCH-OVER
UNIT TO PANEL
OUTGOING
24Vdc to AC
SWITCH-OVER
UNIT
T1216W-C Panel
Mains AC
Change-Over
Unit
L
N
L
N
Live & Neutral
Connections to Power
Supply Unit
Use Cable ties
to keep mains
cores together
Use Cable ties
to keep mains
cores together
Use Cable tie
to keep mains
cores together
Figure 17
– Mains AC Change-Over Unit Electrical Installation Diagram
