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Engineering Data
Derating Curve
15W/30W
Standard Mounting/Horizontal Mounting/Face-up Mounting
120
Opened type
100
A
80
Covered type
60
40
20
0
20
10
0
10
20
30
40
50
60
70 80
Ambient temperature ( C)
50W
Standard Mounting/Horizontal Mounting
120
Opened type
100
A
80
Covered type
60
40
20
0
20
10
0
10
20
30
40
50
60
70 80
Ambient temperature ( C)
100W
Standard Mounting
120
Opened type
100
A
80
Covered type
60
40
20
0
20
10
0
10
20
30
40
50
60
70 80
Ambient temperature ( C)
150W
Standard Mounting
120
Opened type
100
A
80
Covered type
60
40
20
0
20
10
0
10
20
30
40
50
60
70 80
Ambient temperature ( C)
300W/600W/1,500W
Note: Refer to page 15.
Note: 1. Internal parts may occasionally be deteriorated or damaged. Do not use the Power Supply in areas outside the derating curves (i.e., the area shown by
shading A in the above graphs).
2. If there is a derating problem, use forced air-cooling.
3. When mounting two or more Power Supplies side-by-side, allow at least 20 mm spacing between them. Multiple 100- and 150-W models cannot be used
side by side. Be sure to install the Power Supplies as far away from heat-generating sources as possible. As a reference value, allow at least 50 mm spacing
on the right and left sides. If only 20 mm spacing is allowed, use the Power Supply at a load ratio of 80% or less.
4. When using 150-W models for a long period of time at an input voltage of 90 VAC or lower, reduce the load to 80% or less of the above derating curves.
(15-W, 30-W, 50-W, 100-W, 150-W Models)
Face-up Mounting
120
Opened type
100
80
Covered type
60
40
20
0
20
10
0
10
20
30
40
50
60
Ambient temperature ( C)
Horizontal Mounting/Face-up Mounting
120
Opened type
100
80
Covered type
60
40
20
0
20
10
0
10
20
30
40
50
60
Ambient temperature (˚C)
Horizontal Mounting
120
Opened type
100
80
Covered type
60
40
20
0
20
10
0
10
20
30
40
50
60
Ambient temperature ( C)
A
70 80
A
70 80
Face-up Mounting
120
100
A
80
60
40
20
0
70 80
20
10
Switch Mode Power Supply
Opened type
A
Covered type
0
10
20
30
40
50
60
70 80
Ambient temperature ( C)
S8VM
9
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