Section 2: General Information; Introduction; Unpacking; Equipment Description - Generac Power Systems RTG24SHA1 Owner's Manual

Section 2: General Information

Introduction

Thank you for purchasing a Generac transfer switch. This
manual has been prepared especially for the purpose of
familiarizing personnel with the design, application,
installation, operation and servicing of the applicable
equipment. Read this manual carefully and comply with
all instructions. This will help to prevent accidents or
damage to equipment that might otherwise be caused by
carelessness, incorrect
procedures.

Unpacking

Carefully unpack the transfer switch. Inspect closely for
any damage that might have occurred during shipment.
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.

Equipment Description

The automatic transfer switch is used for transferring
electrical load from a UTILITY (NORMAL) power source
to a GENERATOR (STANDBY) power source. Such a
transfer of electrical loads occurs automatically when the
UTILITY power source has failed or is substantially
reduced and the GENERATOR source voltage and
frequency have reached an acceptable level. The
transfer switch prevents electrical feedback between two
different power sources (such as the UTILITY and
GENERATOR sources) and, for that reason, codes
require it in all standby electric system installations.
The transfer switch consists of a transfer mechanism,
utility service disconnect circuit breaker, a control relay,
fuses, terminal strip, and fuse holder for connection of
sensing wires.
This transfer switch is suitable for use as service
equipment.

Transfer Switch Mechanism

See Figure 2-1. These switches 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.
This transfer switch is suitable for control of motors, electric
discharge lamps, tungsten filament and electric heating
equipment where the sum of motor full load ampere ratings
and the ampere ratings of other loads do not exceed the
ampere rating of the switch and the tungsten load does not
exceed 30 percent of the switch rating.
Automatic Transfer Switch Owner's Manual
application, or improper
This UL listed transfer switch is for use in optional
standby systems only (NEC article 702).
A 100A rated switch is suitable for use on utilty services
capable of delivering not more than 10,000 RMS
symmetrical amperes, 240 VAC maximum. A 200A rated
switch is suitable for use on a utility service capable of
delivering not more than 22,000 RMS symmetrical
amperes, 240 VAC maximum when utilized with Siemens
and Murray branch circuit breakers, and suitable for use
on utility services capable of 10,000 RMS symmetrical
amperes, 240 VAC maximum when utilized with Eaton
and Square D Homeline branch circuit breakers.
A
B
Figure 2-1. Typical Single-Phase ATS Transfer
Mechanism
A Utility Closing Coil
B Generator Closing Coil
C Utility Lugs (N1 & N2)
D Generator Lugs (E1 & E2)
E Load Lugs (T1 & T2)
General Information
C
D
000219
E
5