User manual
CD5.121
CD–Series
DC/DC Converter; 12V, 8A
Jan. 08 / Rev. 1.1 DS-CD5.121-EN / All parameters are specified at 12V, 8A and 24Vdc input at 25°C ambient unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
11/21
15. ENVIRONMENT
Operational temperature -25°C to +70°C (-13°F to 158°F) Reduce output power according to Fig. 15-1
Output de-rating 1.25W/°C 45-60°C (113°F to 140°F), see Fig. 15-1
2.5W/°C 60-70°C (140°F to 158°F), see Fig. 15-1
Storage temperature -40 to +85°C (-40°F to 185°F) During storage and transportation
Humidity 5 to 95% r.H. IEC 60068-2-30
Do not energize while condensation is present
Vibration sinusoidal 2-17.8Hz: ±1.6mm; 17.8-500Hz: 2g
2 hours / axis
IEC 60068-2-6
Shock 30g 6ms, 20g 11ms
3 bumps / direction, 18 bumps in total
IEC 60068-2-27
Altitude 0 to 6000m (0 to 20000ft) Reduce output power or ambient
temperature above 2000m sea level.
Output de-rating (for altitude) 6W/1000m or 5°C/1000m Above 2000m (6500ft), see Fig. 15-2
Over-voltage category III EN 50178, altitudes up to 2000m
II Altitudes from 2000m to 6000m
Degree of pollution 2 EN 50178, non conductive
Fig. 15-1 Output current vs. ambient temp. Fig. 15-2 Output current vs. altitude, 12V
0
-25 0 20 45 70°
C
2
4
6
8
10A
60
Ambient Temperature
Allowable Output
Current at 12V
s
h
o
r
t
t
e
r
m
0
0 2000 4000
6000m
2
4
6
8
10A
Altitude
A
.
.
.
T
a
m
b
<
6
0
°
C
B
.
.
.
T
a
m
b
<
5
0
°
C
C
.
.
.
T
a
m
b
<
4
0
°
C
C
B
A
s
h
o
r
t
t
e
r
m
Allowable Output
Current at 12V
The ambient temperature is defined 2cm below the unit.