11
4.3.3
Power vs. ambient temperature
The maximum temperature the case of the WSB can reach is limited to ensure user safety. The charger
system will limit its output power when required so the maximum case temperature of 90 °C is not
exceeded. The graph below shows test results of the charger system attempting to provide full power
to cool the charger system.
For example:
●
At 20 °C ambient the charger system can run continuously at full power
●
At 30 °C the charger system will run at full power for approximately 42 minutes and then eventually
reduce its output power to 930 W
600
650
700
750
800
850
900
950
1000
0
10
20
30
40
50
60
70
80
90
100 110
Ou
tp
ut
p
ow
er
(W)
Time duration (min.)
20°C ambient
30°C ambient
40°C ambient
50°C ambient
Mounting the metal surface of the WSB to a heatsink or other large metal item such as an AGV chassis
will improve its thermal performance.
●
Volume of air surrounding the WSB
●
The ability of hot air to escape the vicinity of the WSB
●
The ability of cool air to enter the WSB installation
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The proximity of the WSB to other hot components
●
Emissivity of surrounding materials
The WPU can run continuously at full power in an ambient temperature of up to 40°C.
required.
