SECTION 7: CONNECTORS, APPLICATIONS & PROTECTION FEATURES
Entire Contents Copyright
2014 by Adaptive Power Systems, Inc. (APS) • All Rights Reserved • No reproduction without written authorization from APS.
42L Series Modular DC Load Operation Manual
Page 74 of 88
7.9.4
Over Temperature Protection
As soon as the temperature of load’s internal heat sinks reaches a level greater than 85° C
(180° F), the over temperature protection is triggered. The digital current meter's LCD
display will indicate "OTP". The load will turn to the OFF state internally.
Please check environmental conditions such as the ambient temperature and distance
between the rear panel of the load chassis and any wall is greater than 15cm / 6 inches.
The load can reset the Over Voltage, Over Current, Overpower and Over Temperature
protection if the condition that caused the fault is removed and the "LOAD" key is pressed
to set "ON" state.
7.9.5
Reverse Polarity Protection Indication
The 42L Series electronic load conducts reverse current when the polarity of the DC source
connection is incorrect. The maximum reverse current is a function of the load model. If the
reverse current excesses the maximum reverse current, it may damage the load.
When a reverse polarity current condition exits, the reverse current is displayed on the 5
digit current meter on the front panel, and the 5-digit DVM indicates a
negative
current
reading. Whenever a reverse current is displayed on the current meter, turn OFF power to
the DC source immediately and make the correct connections.