Rockwell
Automation
1606-XLE240EP 24V, 10A; Single Phase Input
10000126343
(Version 00)
www.ab.com
Page 18
25.9.
E
XTERNAL
I
NPUT
P
ROTECTION
The unit is tested and approved for branch circuits up to 20A. External protection is only required if the supplying branch has an ampacity greater than
this. In some countries local regulations might apply. Check also local codes and local requirements.
If an external fuse is necessary or utilized, a minimum value is required to avoid undesired tripping of the fuse.
B-Characteristic
C-Characteristic
Ampacity max.
20A
20A
min.
10A 6A
25.10.
O
PERATION ON
T
WO
P
HASES
Fig. 25-6 Schematic for two phase operation
2
40V
+
10%
ma
x.
Fuse
L2
L1
L3
L
N
PE
Power Supply
AC
DC
internal
fused
Instructions for two phase operation:
a)
A phase to phase connection is allowed as long as the supplying voltage is
below 240V
+10%
.
b)
Use a fuse or a circuit breaker to protect the N input. The N input is
internally not protected and is in this case connected to a hot wire.
Appropriate fuses or circuit breakers are specified in section 25.9 “External Input
Protection”.
25.11.
U
SE IN A
T
IGHTLY
S
EALED
E
NCLOSURE
When the power supply is installed in a tightly sealed enclosure, the temperature inside the enclosure will be higher than outside. The inside
temperature defines the ambient temperature for the power supply.
Results from such an installation:
Power supply is placed in the middle of the box, no other heat producer inside the box
Enclosure:
Type IP66 Box PK 9519 100, plastic, 180x180x165mm
Load:
24V, 8A; (=80%) load is placed outside the box
Input:
230Vac
Temperature inside the box: 51.7°C (in the middle of the right side of the power supply with a distance of 2cm)
Temperature outside the box: 23.1°C
Temperature rise:
28.6K
