AMETEK XT Series - Manual (Page 30)

Load Connection and Sensing
Grounding
30 Operating Manual for XT Series Power Supply
Rear Panel Terminals To make load connections, attach the wire using the steps
below:
1. Strip load wires 0.25 in.(6 mm)
2. Using a flat-bladed 1/8 in. (3 mm) screwdriver, loosen the positive (
+) and
negative (
−) output terminal screws on the output terminal block.
3. Insert the wire into the bottom of the block and tighten screw.
Connecting
Multiple
Loads
Proper connection of distributed loads is an important aspect of power supply use. A
common mistake is to connect leads from the power supply to one load and then from
that load to other loads. In this parallel power distribution method, the voltage at each
load depends on the current drawn by the other loads, and DC ground loops develop.
Except for low current applications, we recommend that you do not use this method.
It is preferable to distribute power via the radial distribution method — in which
power is connected individually to each load. In the radial method, a single pair of
terminals are designated as the positive and negative distribution terminals. This pair
of terminals may be the power supply output terminals, the load terminals, or a
distinct set of terminals specially established for distribution. In this scheme, there
are no ground loops and the effect of one load upon another is minimized.
Grounding
Make proper ground connections to avoid developing paths between separate ground
points. To avoid ground loops, there must be only one ground return point in a power
system. If the load itself is not grounded, ground the positive or negative output (as
appropriate) to the supply's chassis using a rear panel screw or the front panel ground
binding post.