External Sense Connection - Pacific Power Source ASX series Operation Manual

SECTION 3 INSTALLATION
3.8

EXTERNAL SENSE CONNECTION

This paragraph describes connection of external sense leads to the ASX-Series Power Source.
External Sense wire size and methods are discussed.
The ASX-Series Power Source contains External Sense Circuits. These circuits measure output
voltage at a external sense point. Since this feature can be completely disabled, the wiring detailed
in this paragraph is optional. If the External Sense feature is desired, this paragraph describes the
wiring requirements for the function.
LETHAL VOLTAGES ARE PRESENT AT THE OUTPUT TERMINALS OF THIS MACHINE !
REFER OUTPUT CONNECTION TO A QUALIFIED ELECTRICIAN.
Figures 3.8.1 and 3.8.2 show external sense wiring for 1, 2, and 3φ systems. There is little or no
current flowing through the External Sense Feedback lines. Standard 22 AWG, 600 Volt control
wire is recommended for this application. Twisting the External Sense wiring is recommended and,
in some cases, can improve performance.
necessary to improve performance. If shielded cable is used, be sure to ground the shield at one
end only to prevent the possibility of creating a ground loop.
When the neutral wire is not used by the load on a split phase output (2 Phase Output Mode, refer
to paragraph 3.4.2), connect the Neutral terminal of the External Sense Terminal block to the
Neutral terminal of the Output Power Terminal block. In cases where the load has a neutral
terminal, connect the neutral lead from External Sense Terminal block to the neutral terminal of the
load.
When wiring the External Sense Leads to a DELTA load (refer to paragraph 3.4.3), connect the
Neutral terminal of the External Sense Terminal block to the Neutral terminal of the Output
Terminal block.
WARNING
In noisy environments, shielding may become
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