3.2 Derating
¡
Input Voltage Derating Curve
Input voltage derating curve is shown in Fig.3.2.
85
115
80
100
[%]
[AC V]
Load
100
90
Fig.3.2 Input voltage derating curve
¡
Ambient Temperature Derating Curve
Derating curve depending on an ambient temperature is shown in
Fig.3.3 to Fig.3.6.
*
Specifications for ripple and ripple noise change in the shaded
area.
¿
PLA100F, PLA150F
(1) Temperature of point A and point B
When using it,it is necessary to radiate heat by the heat of the pow-
er supply.
Table 3.1 shows the relation between the upper limit temperature
(Point A and Point B).
Please consider the ventilation so that the convection which is
enough for the whole power supply is provided.
And temperature of Point A and Point B please become lower than
upper limit temperature.
The expectancy life in the upper bound temperature (Point A and
Point B) is three years.
Please refer to External View for the position of Point A and Point B.
Table 3.1 Temperature of point A and point B
Model
All direction
Point A
Point B
PLA100F
81
C
max
-
PLA150F
85
C
max
78
C
max
(2) Derating curve in ambient temperature
-20
-10
0
0
80
70
60
5
55
0
40
30
1
2
3
)
3
Forced air (0.5m
3
/ min
1
Convection (A mount)
2
Convection (B, C mount)
0
8
0
10
0
6
0
4
0
5
0
2
20
10
Load factor [%]
[
C
]
Ambient temperature
Fig.3.3 Ambient temperature derating curve for PLA100F/150F-12, -15
-20
-10
0
0
80
70
60
5
5
35
45
5
0
40
30
1
2
3
)
3
Forced air (0.5m
3
/ min
1
Convection (A mount)
2
Convection (B, C mount)
0
8
0
10
0
6
0
4
0
5
0
2
20
10
Load factor [%]
[
C
]
Ambient temperature
Fig.3.4 Ambient temperature derating curve for PLA100F/150F-24, -36, -48
Ambient temperature should be measured in 5 to 10cm from
power supply to avoid own heat-up. About detail of ambient tem-
perature, please contact us.
¿
PLA300F
Ambient temperature [
C
]
0
20
10
-20
-10
100
80
60
50
40
20
0
80
60
70
50
40
30
Load factor [%]
Fig.3.5 Ambient temperature derating curve for PLA300F
Ambient temperature should be measured in front of terminal
block. Please note about temperature raise of the input and output
cable. About detail of ambient temperature, please contact us.
¿
PLA600F
0
20
10
-20
-10
100
80
60
40
20
0
80
60
70
50
40
30
Ambient temperature [
C
]
Load factor [%]
Fig.3.6 Ambient temperature derating curve for PLA600F
Ambient temperature should be measured in front of terminal
block. Please note about temperature raise of the input and output
cable. About detail of ambient temperature, please contact us.
AC-DC Power Supplies Enclosed type
Instruction Manual
PLA-15
PLA
me̲pla1.indd PLA-15
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2014/03/04 10:34:43
2014/03/04 10:34:43
