Series Operation And Parallel Operation - Cosel PAA50F Instruction Manual

l
PAA300F
(1)When not using remote sensing function
(2)When using remote sensing function
Use twisted pair wire or shielded wire
ACIN
-S +S
C3
C1 + C2
+
- +
Take off the short-piece
l
PAA600F
(1)When not using remote sensing function
(2)When using remote sensing function
Use twisted pair wire or shielded wire
C1 C2
ACIN
+ +
AC AC -S -M +M +S
- +
Take off the short-piece
2.8 Isolation
n
For a receiving inspection, such as Hi-Pot test, gradually in-
crease(decrease)the voltage for start(shut down). Avoid using Hi-
Pot tester with the timer because it may generate voltage a few
times higher than the applied voltage, at ON/OFF of a timer.
If the unit is tested on the isolation between input & output and
output & FG, remote ON/OFF must be shorted to output.
AC-DC Power Supplies Enclosed type
Load wire
Sensing wire
Normal current flow
R1
Ubnormal current flow
+
(+) Load
(-)
Attention for connection
Load wire
Sensing wire
Normal current flow
R1
Ubnormal current flow
(+)
Load
(-)
-
C3
Attention for connection
June 29, 2011
Instruction Manual
2.9 Thermal protection
lPAA300F PAA600F
n Thermal protection is built-in. If this function comes into effect, shut
down the output, eliminate all possible causes of overheating, and
drop the temperature to normal level. Output voltage recovers after
applying input voltage. To prevent the unit from overheating, avoid
using the unit in a dusty, poorly ventilated environment.
3 Series Operation and
Parallel Operation
3.1 Series operation
n
Series operation is available by connecting the outputs of two or
more power supplies, as shown below.
Output current in series connection should be lower than the low-
est rated current in each unit.
(a)
3.2 Parallel operation/master-slave operation
lPAA50F PAA75F PAA100F PAA150F
n
Parallel operation is not possible.
n
Redundancy operation is available by wiring as shown below.
I
1
+
Power
supply
-
I
2
+
Power
supply
-
n
Even a slight difference in output voltage can affect the balance
between the values of I and I .
1 2
Please make sure that the value of I does not exceed the rated
current of a power supply.
I the rated current value
3
(b)
I
3
3
PAA-19
PAA