Specifications

LOAD WIRING LENGTH FOR OPERATION WITH SENSE LINES
For applications using remote sensing, you must limit the voltage drop across each load line. We recommend
that you use the larger load wiring or ensure a smaller voltage drop (1V typical max.), although the unit will
compensate for up to 5V drop in each line
NOISE AND IMPEDANCE EFFECTS
To minimize noise pickup or radiation, use shielded pair wiring or shortest possible length for load wires.
Connect the shield to the chassis via a rear panel mounting screw. Where shielding is impossible or
impractical, simply twisting the wires together will offer some noise immunity. When using local sense
connections, use the largest practical wire size to minimize the effects of load line impedance on the
regulation of the supply.
Note: Use shorter, low impedance and wider gauge load cables
LOAD CONNECTIONS
There is a potential shock hazard at the load when using a power supply with a rated output greater than 40V.
To protect personnel against accidental contact with hazardous voltages, ensure that the load, including
connections, have no live parts, which are accessible. Also ensure that the insulation rating of the load wiring
and circuitry is greater than or equal to the maximum output voltage of the power supply.
When making connections to the output terminal, ensure that each terminal’s mounting hardware and wiring
assembly are placed to avoid touching the other terminal and shorting the power supply output. Heavy
connecting cables must have some form of strain relief to avoid loosening the connections.
REVERSE POLARITY
To prevent from damages caused by reverse polarity, a fast recovery diode and a fuse should be connected to
the test system. Both the fuse and the diode should be rated for two times the maximum rated voltage and
current of the unit. Please connect the components according to the following diagram.
REVERSE POLARITY PROTECION
WARNING
CAUTION
POWER SUPPLY
(+) Sense
(+) Output
(-) Output
(-) Sense
BATTERY/LOAD
FUSE
Fast-Recovery
Diode
(+)
(-)
2-6