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Front Panel Connections
The load should be connected to the positive (red) and negative (black) terminals marked OUTPUT.
Both are fully floating and either can be connected to ground.
Remote sense connections to the load, if required, are made from the positive (+) and
negative (−) SENSE terminals. Switch the LOCAL/REMOTE switch to REMOTE when remote
sensing is required. Switch back to LOCAL when remote sensing is not in use.
Warning! Voltages above 70Vdc are hazardous live according to EN 61010-1 and great
care must be taken when using the power supply at voltages above this level.
The universal safety binding posts used for the output meet the requirements for
reinforced insulation for voltages up to 250Vdc because creepage and clearance to the
terminal contacts is >2.5mm even with the binding post fully open. However, it is highly
recommended that the binding posts are usually fully tightened and that connections are
only made using leads fitted with fixed-shroud 4mm safety plugs.
Connections to each Sense terminal are made by inserting the stripped end of the Sense
wire connection into the contact whilst the spring-loaded button is depressed and then
releasing the button to trap the wire. Ensure that the exposed end of the wire is fully
inserted and inaccessible to the touch.
Always make connections to the instrument with the OUTPUT off.
The terminal marked
FRONT PANEL VIEW
10
is connected to the chassis and safety earth ground.
/
V I SETTINGS
VIEW
( LOCAL )
Vmin
Vmax
VOLTAGE SPAN
Vmin
( VIEW )
HOLD TO SET
XEL 250 DC Power Supply
V
METER
LOCK
AVERAGE
HOLD TO CANCEL
CANCEL
MAIN
FINE
106.27
Vmax
ENABLE
CANCEL
OUTPUT
Connections
250V 0.37A
mA
LOW I
RANGE
CANCEL
OUTPUT
LOCAL REMOTE
SENSE
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