3
2.1 INTRODUCTION TO INSTALLATION
This equipment has been wired and tested at the
factory. Installing the switch includes the following
procedures:
Mo
•
unting the enclosure.
Connecting utility and generator power source
•
leads.
Connecting the load leads.
•
Connecting any auxiliary contact (if needed)
•
Installing/connecting any options and accessories.
•
Te
• sting
functions.
2.2 UNPACKING
Carefully unpack the transfer switch. Inspect closely
for any damage that might have occurred during ship-
ment. The purchaser must file with the carrier any
claims for loss or damage incurred while in transit.
Check that all packing material is completely removed
from the switch prior to installation.
2.3 MOUNTING
Mounting dimensions for the transfer switch enclo-
sure are in this manual. Enclosures are typically wall-
mounted. See the “Mounting Dimensions” drawing.
Handle transfer switches carefully when install-
ing. Do not drop the switch. Protect the switch
against impact at all times, and against construc-
tion grit and metal chips. Never install a transfer
switch that has been damaged.
Install the transfer switch as close as possible to the
electrical loads that are to be connected to it. Mount
the switch vertically to a rigid supporting structure.
To prevent switch distortion, level all mounting
points. If necessary, use washers behind mounting
holes to level the unit.
2.4
CONNECTING POWER SOURCE
AND LOAD LINES
DANGER
Make sure to turn OFF both the UTILITY
(Normal) and EMERGENCY (Standby generator)
power supplies before trying to connect power
source and load lines to the transfer switch.
Supply voltages are extremely high and danger-
ous. Contact with such high voltage power sup-
ply lines causes extremely hazardous, possibly
lethal, electrical shock.
Wiring diagrams and electrical schematics are pro-
vided in this manual. Power source and load connec-
tions are made at the transfer mechanism, inside the
switch enclosure.
2.4.1 2-POLE MECHANISM
These switches (Figure 2.1) are used with a single
phase system, when the single phase NEUTRAL line
is to be connected to a Neutral Lug and is not to be
switched.
Figure 2.1 — Typical 2-Pole Transfer Mechanism
(400 Amp Shown)
2.4.2 3-POLE MECHANISM
These switches (Figure 2.2) are used with a three
phase system, when the three phase NEUTRAL line
is to be connected to a NEUTRAL lug and is not to
be switched.
Figure 2.2 — Typical 3-Pole Transfer Mechanism
(400 Amp Shown)
Section 2 — Installation
RTS “HS” Type Transfer Switch
