AMETEK SLD Series - Manual (Page 46)

Operation Sorensen SLD-Series DC Load
3-18 M540075-01 Rev C
To remove the condition that triggered the OTP, check the environmental requirements per
Section 1.2.3, and ensure that the distance between the rear panel of Electronic load
mainframe and wall is greater than 15cm.
3.5.5 Reverse Polarity
The SLD-series Electronic load conducts reverse current when the polarity of the DC source
connection is incorrect. Please refer to the specifications in Section for the maximum
reverse current.
CAUTION:
If the reverse current exceeds the maximum reverse current, it may cause
permanent damage to the SLD-series Electronic Load.
When Reverse Polarity is triggered, the upper 5-character display indicates "Prot," and the
lower 5-character display indicates "-V", a negative current reading.
Whenever a reverse current reading is displayed, turn OFF the DC power source
immediately and make the correct connections.