Load wiring length for operation with sense lines, Noise and impedance effects – Xantrex Technology XPR 150-40 User Manual

Page 42

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Installation
Load Wiring

40

Operating Manual for XPR Series Power Supply

Load Wiring

Length for

Operation

with Sense

Lines

For applications using remote sensing, or for improved voltage regulation at the load,
you must limit the voltage drop across each load line. We recommend that you use
larger load wiring to ensure a smaller voltage drop (1V maximum under full load
conditions), although units will compensate for up to 5V drop in each line with the
remote sense lines connected. The combined voltage drop across the load lines and
load cannot exceed the rated output of the supply.

Noise and

Impedance

Effects

To minimize noise pickup or radiation, use the shortest possible length of
shielded-twisted pair wiring for load lines. Connect the shield to the chassis via a rear
panel mounting screw. Where shielding is not possible or is impractical, twisting the
wires together offers 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.

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