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Installation
Section 3
3.1 — Introduction to Installation
Though this equipment has been wired and tested at the
factory, the installer should verify all wiring connections
are proper. Installing the switch includes the following
procedures:
•
Mounting the enclosure.
•
Connecting power source and load leads.
•
Connecting the generator communication circuit.
•
Setting DIP switches on ATS controller.
•
Programming Gxxx or Hxxx control on engine gen-
erator.
•
Installing/connecting any options and accessories.
•
Testing functions.
3.2 — Unpacking
Carefully unpack transfer switch. Inspect closely for any
damage. Purchaser must file damage claim with carrier
for noted shipping damage.
Verify all packing material is removed from switch before
installation.
Attach any lifting device to the transfer switch mounting
holes or brackets. do not lift the switch at any other point.
3.3 — Mounting
Mounting dimensions for the transfer switch enclosure
are in this manual. Enclosures are typically floor standing
and mounted to the wall. Components are generally
mounted in a standard NEMA 12-type enclosure. A
NEMA 3R, is also available. See "Transfer Switch
Options" on page 18.
Install the transfer switch as close as possible to the elec-
trical loads that are to be connected to it. Stand the enclo-
sure on a flat surface. If the surface is not flat, it will be
necessary to add shims to make the enclosure level.
Mount to a wall or support structure for vertical stability.
To prevent switch distortion, level all mounting points. If
necessary, use washers behind mounting holes to level
the unit.
Automatic Transfer Switch Owner's Manual
3.4 — Connecting Power Source and
Load Lines
Wiring diagrams and electrical schematics are provided
in this manual. Power source and load connections are
made at a transfer mechanism, inside the switch enclo-
sure.
3.4.1— Transfer Mechanisms (100-400A)
See Figure 3-1. This switch is used with a single-phase
system, when the single-phase neutral line is to be
switched during transfer; or with a three-phase system,
when neutral is not to be switched.
All power cables should enter the switch next to the
transfer mechanism terminals. Standard terminal lugs on
the transfer mechanism are solderless, screwtype.
Connect power source and load conductors to clearly
marked terminal lugs on transfer mechanism as follows:
•
load leads: Connect to terminals T1, T2, & T3.
•
normal (utility) Source Leads: To terminals N1, N2,
& N3.
•
standby (emergency) Source Leads: Connect to
transfer mechanism terminal lugs E1, E2, & E3.
Figure 3-1. Typical 3-Pole Transfer
Mechanism (200 Amp Shown)
7
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