Specifications

PROBLEM : The output voltage is 0 V or very low
PROBABLE CAUSE
SUGGESTED REMEDY
Input voltage is very low Check that the input voltage is 120VAC
or 240 VAC as selected
The input voltage has been converted Power the unit from the proper AC voltage
to 240 VAC but the unit has been
plugged into 120 VAC outlet
The unit is in current limit condition Check the output terminals are not
due to overload caused by large reactive shorted. Remove the load. If the output
loading or by the output being voltage gets restored, the load is shorted
short circuited or is offering large reactive impedance.
Unit is shut down due to over Check that the fan has not failed or
temp. (SEC-1223) the vent openings are not blocked
PROBLEM : Output voltage drops as soon as the load is switched on
PROBABLE CAUSE SUGGESTED REMEDY
The unit is going into current
limit protection mode
5.
Reduce the load current to less than
the current limit value. Motors,
pumps, compressors, relays, incan-
descent and halogen lamps and large
capacitors in the input section of the
DC devices draw very high inrush or
starting currents of up to 10 times
their normal operating currents. En-
sure that these inrush/starting cur-
rents are below the current limit value
of the power supply.