Thermal considerations – GE Industrial Solutions EVW010A0B Series (Eighth-Brick) User Manual
Page 9
Data Sheet
September 4, 2013
EVW010A0B Series Power Modules
36 – 75Vdc Input; 12.0Vdc Output; 10A Output Current
LINEAGE
POWER
9
Thermal Considerations
(continued)
Figure 14. T
ref
Temperature Measurement
Location for Heat plate Module.
Heat Transfer via Convection
Increased airflow over the module enhances the heat
transfer via convection. Derating curves showing the
maximum output current that can be delivered by the
open frame module versus local ambient temperature
(T
A
) for natural convection and up to 3m/s (600
ft./min) forced airflow are shown in Figure 15.
O
U
TPU
T
CU
RRE
NT
, I
O
(A
)
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
3.0 m/s
(600LFM)
2.0 m/s
(400LFM)
1.0 m/s
(200LFM)
0.5 m/s
(100LFM)
NC
AMBIENT TEMEPERATURE, T
A
(
o
C
)
Figure 15. Output Current Derating for the Open
Frame Module; Airflow in the Transverse Direction
from Vout(+) to Vout(-); Vin =48V.
For additional power, the module is available with an
optional heatplate (-H), that allows for the use of
heatsinks to improve the thermal derating. Derating
curves showing the maximum output current that can
be delivered by the heatplate module with different
heatsink heights versus local ambient temperature
(T
A
) for natural convection and up to 3m/s (600
ft./min) forced airflow are shown in Figures 16 -19.
O
U
TPUT
CU
R
R
E
N
T
, I
O
(A
)
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
3.0 m/s
(600LFM)
2.0 m/s
(400LFM)
1.0 m/s
(200LFM)
0.5 m/s
(100LFM)
NC
AMBIENT TEMEPERATURE, T
A
(
o
C
)
Figure 16. Output Current Derating for the Module
with Heatplate; Airflow in the Transverse Direction
from Vout(+) to Vout(-); Vin =48V.
O
U
TPU
T
CUR
RE
NT,
I
O
(A
)
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
2.0 m/s
(400LFM)
1.0 m/s
(200LFM)
0.5 m/s
(100LFM)
NC
AMBIENT TEMEPERATURE, T
A
(
o
C
)
Figure 17. Output Current Derating for the Module
with Heatplate and 0.25 in. heatsink; Airflow in the
Transverse Direction from Vout(+) to Vout(-); Vin
=48V.
O
U
TP
UT
CU
RRE
NT
, I
O
(A
)
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
2.0 m/s
(400LFM)
1.0 m/s
(200LFM)
0.5 m/s
(100LFM)
NC
AMBIENT TEMEPERATURE, T
A
(
o
C
)
Figure 18. Output Current Derating for the Module
with Heatplate and 0.5 in. heatsink; Airflow in the
Transverse Direction from Vout(+) to Vout(-); Vin
=48V.
AIRFLOW