TP-5660 11/9858 Installation
Installing accessories to transformer assembly.
Hazardous voltage can cause severe injury or death. To
prevent the possibility of electrical shock, disconnect harness
plugbeforeinstalling any accessories which will beconnected
to transformer assembly primary terminalsonmicroprocessor
logic models. Terminals are at line voltage!
Making line or auxiliary connections. Hazardous voltage
can cause severe injury or death. Toprevent thepossibility
of electrical shock, deenergize the normal power source
before making any line or auxiliary connections.
NOTICE
Hardware damage! Transfer switch may use both American
Standard and metric hardware. Use the correct size tools to
prevent rounding of bolt heads and nuts.
NOTICE
Electrostatic discharge damage! Electrostatic discharge
(ESD) damages electronic circuit boards. Prevent
electrostatic discharge damage by wearing an approved
grounding wrist strap when handling electronic circuit boards
or integrated circuits. An approved grounding wrist strap
provides a high resistance (about 1 megohm), not a direct
short, to ground.
NOTE
For easy access during installation wiring, remove the
front door of the enclosure. Disconnect the cable plug
that connects the front door components to the internal
components and then lift the door off its hinge pins.
6.4.1 AC Power Connections
All conductors should enter the enclosure at the
locations shown on the drawings. When drilling entry
holes for any conductors, cover the transfer switch
components for protection from metal chips and
construction grit. Remove any debris from the
enclosure with a vacuum cleaner. Do not use
compressedairtocleantheswitchbecauseitcancause
debris to lodge in the components and cause damage.
Use watertight conduit hubs approved for outdoor use
for installing the transfer switch outdoors.
Before connecting wiring cables to terminal lugs,
remove surface oxides from cables by cleaning with a
wire brush. If using aluminum conductors, apply a joint
compound to cables. After tightening terminal lugs,
carefully wipe off excess joint compound.
Connection points for the normal power, emergency
power, and load are clearly marked on the contactor
assembly and are also shown on the drawings in
Section4. Besuretoheedthephase markings(A,B,C,
and N).
NOTE
Connect source and load phases as indicated by the
markings and drawings. Improper connections may
cause short circuits or cause phase-sensitive load
devices to malfunction or operate in reverse.
NOTE
When making power connections to the power
switching device, leave sufficient slack in the power
leads to reach all of the power connecting lugs on the
power switching device.
NOTE
The power source leads must be phased A-B-C for
option DD-34-Z (phase sequence and loss monitoring)
to function correctly. If the power source phase
sequence is not A-B-C and option DD-34-Z is enabled
the controller consider the source to have failed.
Connectthe normal, emergency andloadconductors to
the clearly marked terminals on the transfer switch.
Verify that all connections are consistent with drawings
before tightening the lugs. Tighten all cable lug
connections to the torque values shown in Figure 6-2.
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