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General Information

Automatic Transfer Switch Owner’s Manual

5

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 application, or improper
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.

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.

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)

000219

A

B

C

D

E

Содержание RTG24SHA1

Страница 1: ...1 100A RTG42SHA1 200A Register your Generac product at WWW GENERAC COM 888 436 3722 Para espa ol visita http www generac com service support product support lookup SAVE THIS MANUAL FOR FUTURE REFERENC...

Страница 2: ...contains or emits chemicals known to the state of California to cause cancer birth defects and other reproductive harm 000004 WARNING California Proposition 65 Engine exhaust and some of its constitue...

Страница 3: ...y Source Side 13 Close to Generator Source Side 14 Return to Utility Source Side 14 Voltage Checks 14 Utility Voltage Checks 14 Generator Voltage Checks 14 Generator Tests Under Load 14 Checking Autom...

Страница 4: ...Table of Contents iv Automatic Transfer Switch Owner s Manual This page intentionally left blank...

Страница 5: ...ible circumstance that might involve a hazard The warnings in this manual and on tags and decals affixed to the unit are therefore not all inclusive If using a procedure work method or operating techn...

Страница 6: ...connections of the transfer switch Failure to do so will result in death or serious injury 000157 DANGER Electrocution Do not disable or modify the connection box door safety switch Doing so will res...

Страница 7: ...ch Failure to do so will result in death or serious injury 000104 DANGER Electrocution Water contact with a power source if not avoided will result in death or serious injury 000188 DANGER Electrocuti...

Страница 8: ...Introduction and Safety 4 Automatic Transfer Switch Owner s Manual This page intentionally left blank...

Страница 9: ...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 connecti...

Страница 10: ...Code UL 1008 STANDARD FOR SAFETY AUTOMATIC TRANSFER SWITCHES UL 67 Panelboards Marking and Application Guide NOTE It is essential to use the latest version of any standard to ensure correct and curre...

Страница 11: ...termined by generator frequency Loads are shed when frequency is less than 58 Hz for three seconds or less than 50 Hz for one half second for 60 Hz systems The SACM can be used in conjunction with ind...

Страница 12: ...General Information 8 Automatic Transfer Switch Owner s Manual This page intentionally left blank...

Страница 13: ...onvenience and proximity to the utility supply and load center 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...

Страница 14: ...NEC Article 210 4 Connecting Power Source and Generator Power Supply Installation and interconnection diagrams are provided in this manual NOTE All installations must comply with national state and l...

Страница 15: ...wiring connection details Recommended wire gauge sizes for this wiring depends on the length of the wire as recommended in the following chart Exception Conductors of AC and DC circuits rated 1000 vol...

Страница 16: ...is in utility mode The contacts will open when the transfer switch is in the standby power mode Figure 3 5 Auxiliary Contact NOTE Auxiliary Contact is rated 10 amps at 125 or 250 volts AC and 0 6 amp...

Страница 17: ...sm main contacts by observing the movable contact carrier arm This can be viewed through the long narrow slot in the inside cover of the ATS The top of the movable contact carrier arm is yellow to be...

Страница 18: ...nsfer switch ratings turn OFF the generator supply to the transfer switch 6 On the generator panel select the OFF mode to shut down the generator NOTE Do NOT proceed until generator AC output voltage...

Страница 19: ...utility power source Approximately one minute after re transfer the engine should shut down With the generator in the AUTOMATIC mode the system is now set for fully automatic operation Installation S...

Страница 20: ...Operation 16 Automatic Transfer Switch Owner s Manual Testing The Smart Management Module Refer to the SMM Owner s Installation Manual for testing that product...

Страница 21: ...Drawings and Diagrams Automatic Transfer Switch Owner s Manual 17 Section 5 Drawings and Diagrams Installation Drawings Installation Drawing No 10000005900 100A 2 of 2...

Страница 22: ...Drawings and Diagrams 18 Automatic Transfer Switch Owner s Manual Installation Drawing No 10000005900 200A 1 of 2...

Страница 23: ...Transfer Switch Owner s Manual 19 Interconnection Drawings Interconnection Drawing 10000005901 Air Cooled 100A Generator page 1 of 2 INTERCONNECTION DRAWING AIR COOLED GENERATOR RTG24SHA1 DRAWING 1000...

Страница 24: ...s 20 Automatic Transfer Switch Owner s Manual Interconnection Drawing 10000005901 Air Cooled 100A Generator page 2 of 2 INTERCONNECTION DRAWING AIR COOLED GENERATOR RTG24SHA1 DRAWING 10000005901 REVIS...

Страница 25: ...s Automatic Transfer Switch Owner s Manual 21 Interconnection Drawing 10000005901 Air Cooled 200A Generator page 1 of 2 INTERCONNECTION DRAWING AIR COOLED GENERATOR RTG42SHA1 DRAWING 10000005901 REVIS...

Страница 26: ...ms 22 Automatic Transfer Switch Owner s Manual Interconnection Drawing 10000005901 Air Cooled 200A Generator page 2 of 2 INTERCONNECTION DRAWING AIR COOLED GENERATOR RTG42SHA1 DRAWING 10000005901 REVI...

Страница 27: ...utomatic Transfer Switch Owner s Manual 23 Interconnection Drawing 10000005855 Liquid Cooled 100A Generator page 1 of 2 INTERCONNECTION DRAWING LIQUID COOLED GENERATOR RTG24SHA1 DRAWING 10000005855 RE...

Страница 28: ...4 Automatic Transfer Switch Owner s Manual Interconnection Drawing 10000005855 Liquid Cooled 100A Generator page 2 of 2 INTERCONNECTION DRAWING LIQUID COOLED GENERATOR RTG24SHA1 DRAWING 10000005855 RE...

Страница 29: ...utomatic Transfer Switch Owner s Manual 25 Interconnection Drawing 10000005855 Liquid Cooled 200A Generator page 1 of 2 INTERCONNECTION DRAWING LIQUID COOLED GENERATOR RTG42SHA1 DRAWING 10000005855 RE...

Страница 30: ...6 Automatic Transfer Switch Owner s Manual Interconnection Drawing 10000005855 Liquid Cooled 200A Generator page 2 of 2 INTERCONNECTION DRAWING LIQUID COOLED GENERATOR RTG42SHA1 DRAWING 10000005855 RE...

Страница 31: ......

Страница 32: ...rights reserved Specifications are subject to change without notice No reproduction allowed in any form without prior written consent from Generac Power Systems Inc Generac Power Systems Inc S45 W2929...

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