Eaton Power Xpert PXM 4000, Руководство пользователя и инструкция по установке

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Page 34
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3 Installation
3.6. Wiring of CT & VT Connections
Install the cable supplied in the mounting
kit to connect the display module (DG1
& DG2) to the meter module (CM5 &
CM6) on the CM-X board.
The Power Xpert Meter models
PXM4000, PXM6000, and PXM8000
series are provided with terminal blocks
for CT and VT connections. Due to the
hazards of open circuit CT’s, the Current
terminal block is equipped with a special
hood that includes top and bottom
retaining screws. It is required that this
terminal block be fully assembled includ-
ing the hood in order to properly secure
the current terminal block. Failure to fully
assemble and secure this connector to
the meter chassis can result in an open
circuit CT condition.
NOTE: Because the hooded connector
will cover the wiring designations printed
on the block terminal, it is important to
mark the wires so they can be identified
after the ends are seated in the connec-
tor housing.
The Power Xpert Meter PXM4000/
PXM6000/PXM8000 is equipped with
multiple cards and terminal blocks. Each
terminal block has an identification and
each terminal has an identification. For
example, the voltage input terminal
block is identified as [VT-] The individual
terminals are identified as V1, V2, V3,
V4, and VR. The intended terminal
identification scheme combines these
references. For example, the V1 con-
nection on the VT terminal block would
be referred to as VT-V1. Proper use of
this terminal block and terminal point
nomenclature should result in a clear
identification sheme for each connection
to the meter.
The current and voltage terminal blocks
provided will accept up to one #10 AWG
wire per connection. Before wiring and
assembling connectors, wire markers
should be placed on the wires a suf-
ficient distance from the stripped ends
to be clearly visible after the connector
hoods are assembled. Each wire identifi -
cation should be visually confirmed as it
is attached to the terminal block.
VX Auxiliary Voltage Terminal Block Inputs
VT Voltage Terminal Block Inputs
CT Current Terminal Block Inputs