INSTRUCTION MANUAL
CCG15
・
30
Series
TDK-Lambda
<Page>
16/23
6-11. Operating Ambient Temperature
This is the allowable operating range.
Output load needs to be derated depending on the ambient temperature. There is no restriction on
mounting direction but there should be enough consideration for airflow so that heat does not
accumulate around the power supply vicinity. Determine external components configuration and
mounting direction on PCB such that air could flow around the power supply at forced cooling and
convection cooling. For better improvement of power supply reliability, derating of ambient
temperature is recommended. For details, refer to "7.Output Derating" section.
6-12. Operating Ambient Humidity
Take note that condensation could lead to power supply abnormal operation or damage.
6-13. Storage Ambient Temperature
Take note that sudden temperature change can cause dew condensation, and it may affect solderability
of terminals.
6-14. Storage Ambient Humidity
Take enough care when storing the power supply because rust which causes poor solderability would
occurred on terminals when stored in high temperature, high humidity environment.
6-15. Withstand Voltage
This power supply is designed to have a withstand voltage of 1.5kVDC between input and output,
1.0kVDC between input and case and 1.0kVDC between output and case for 1 minute. When
conducting withstand voltage test during incoming inspection, set the current limit value of the
withstand voltage testing equipment to 10mA. Furthermore, avoid throw in or shut off of the testing
equipment when applying or when shutting down the test voltage. Instead, gradually increase or
decrease the applied voltage. Take note especially when using the timer of the test equipment because
when the timer switches the applied voltage off, impulse voltage which has several times the magnitude
of the applied voltage is generated causing damage to the power supply. Connect the terminals as shown
in the diagram below.
Fig.6-12
Withstand Voltage Test for Input
–
Output
Fig.6-14
Withstand Voltage Test for Output
–
Case
Fig.6-13
Withstand Voltage Test for Input
–
Case
+Vin
RC
+Vout
-Vout
-Vin
TRM,COM
Withstand
voltage tester
Case
+Vin
RC
+Vout
-Vout
-Vin
TRM,COM
Withstand
voltage tester
Case
+Vin
RC
+Vout
-Vout
-Vin
TRM,COM
Withstand
voltage tester
