n
n
n
Series operation with V1 and V2 is available by connecting the
outputs of the unit as shown below. Output current in series con-
nection should be lower than the lowest output current of the unit.
Series operation with other model is not possible.
Parallel operation is not possible.
l
MMB50A
(1)Mounting method
(2)Derating curve
Note:
In the hatched area, the specification of Ripple, Ripple Noise is
different from other area.
MMB-9
3 Series Operation and
Parallel Operation
4 Assembling and
Installation Method
2.6 Isolation
n
For a receiving inspection, such as Hi-Pot test, gradually in-
crease(decrease)the voltage for the start(shut down). Avoid using
Hi-Pot tester with the timer because it may generate voltage a
few times higher than applied voltage, at ON/OFF of a timer.
If the unit is tested on the isolation between input & output and
output & FG, output terminals must be shorted.
4.1 Installation method
4.2 Derating
n
n
n
When two or more power supplies are used side by side, position
them with proper intervals to allow enough air ventilation. Ambient
temperature around each power supply should not exceed the
temperature range shown in derating curve.
The operative ambient temperature is different by with/without
case cover or mounting position. Please refer drawings as below.
When unit mounted except below drawings, it is required to con-
sider ventilated environment by forced air cooling or tempera-
ture/load derating. For details, please consult our sales or engi-
neering departments.
10
0
-10
55
45
35
25
65
55
45
35
25
70
60
50
40
30
Forced air (0.5m /min)
3
Convection
100
80
60
40
20
0
C mounting
B mounting
A mounting
Ambient temperature [ ]
Without
case
cover
Load
factor
[%]
10
0
-10
60
50
40
30
70
60
50
40
30
70
60
50
40
30
With
case
cover
Forced air (0.5m /min)
3
Convection
100
80
60
40
20
0
C mounting
B mounting
A mounting
Ambient temperature [ ]
Load
factor
[%]
MMB
Instruction Manual
AC-DC Power Supplies Enclosed type
June 29, 2011
