Publication 700-AT001A-EN-E June 2002
SSR Mounting and Installation
3-5
Ambient Temperature Measurement Conditions
a. Measure the ambient temperature under the power
application conditions that will produce the highest
temperature in the control panel and after the ambient
temperature has stabalized.
b. Refer to
Figure 1
for the measurement position. If there is a
duct or other equipment within the measurement distance of
100 mm, refer to
Figure 2.
If the side temperature cannot be
measured, refer to
Figure 3.
c. If more than one row of SSRs are mounted in the control
panel, measure the ambient temperature of each row and use
the position with the highest temperature.
Operation and Storage
Environment Precautions
Ambient Temperature (Operating)
The rated operating ambient temperature of an SSR is determined with
proper ventilation conditions. If the heat radiation conditions of the
SSR, such as fresh air supply or ventilation is improper, the operating
ambient temperature will exceed the rated value. As a result, the SSR
may fail prematurely.
When using SSRs, check that the circuits are designed to satisfy the
conditions specified under
Load Currents vs. Ambient Temperatures
.
Be aware that the operating ambient temperature will be excessive,
depending on the environmental conditions (e.g., weather and indoor
air-conditioning conditions) or operating conditions (e.g., enclosed
panel mounting).
100 mm
L/2
Other
Device
100 mm
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