Generac Power Systems RTG24SHA1 Manuel utilisateur

Owner’s Manual

For

Automatic Transfer Switch

with Integrated Load Center

100–200 Amp, Service Entrance

Model Number

RTG24SHA1 (100A)

RTG42SHA1 (200A)

WWW.GENERAC.COM

888-436-3722

Para español , visita: http://www.generac.com/service‐support/product‐support‐lookup

SAVE THIS MANUAL FOR FUTURE REFERENCE

MODEL NUMBER: _________________________

SERIAL NUMBER: _________________________

DATE PURCHASED:________________________

ii Automatic Transfer Switch Owner’s Manual

(000005)

WARNING

California Proposition 65. This product 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 constituents are known to the state of California

to cause cancer, birth defects, and other reproductive

harm.

Automatic Transfer Switch Owner’s Manual iii

Section 1: Introduction and Safety

Introduction ......................................................... 1

Safety Rules ........................................................ 1

Safety Symbols and Meanings .......................... 1

Electrical Hazards ............................................... 2

General Hazards .................................................. 3

Section 2: General Information

Introduction ......................................................... 5

Unpacking ............................................................ 5

Equipment Description ....................................... 5

Transfer Switch Mechanism ....................................... 5

Load Center Circuit Breakers ..................................... 6

Service Disconnect Breaker and Terminal Ratings .... 6

Transfer Switch Data Decal ................................ 6

Transfer Switch Enclosure ................................. 6

Safe Use of Transfer Switch .............................. 6

Load Management Options ................................ 6

Smart A/C Module (SACM) ......................................... 7

Smart Management Module (SMM)

(Sold Separately) ............................................... 7

Application Considerations ......................................... 7

Section 3: Installation

Introduction to Installation ................................. 9

Mounting .............................................................. 9

Install Breakers ................................................... 9

Installing Branch Circuit Conductors ............. 10

Connecting Power Source and Generator Power

Supply .......................................................... 10

Connecting Start Circuit Wires ........................ 11

Connecting Smart A/C Module (SACM) .......... 11

Control of Air Conditioner Load ................................ 11

Auxiliary Contact .............................................. 12

Section 4: Operation

Functional Tests and Adjustments ..................13

Manual Operation ..............................................13

Close to Utility 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 Automatic Operation ........................15

Installation Summary ........................................15

Shutting Generator Down While Under Load ..15

Testing The Smart A/C Module ........................15

Testing The Smart Management Module .........16

Section 5: Drawings and Diagrams

Installation Drawings ........................................17

Installation Drawing No. 10000005900 (100A) ..........17

Installation Drawing No. 10000005900 (200A) ..........18

Interconnection Drawings ................................19

Interconnection Drawing 10000005901—

Air-Cooled 100A Generator (page 1 of 2) ........19

Interconnection Drawing 10000005901—

Air-Cooled 100A Generator (page 2 of 2) ........20

Interconnection Drawing 10000005901—

Air-Cooled 200A Generator (page 1 of 2) ........21

Interconnection Drawing 10000005901—

Air-Cooled 200A Generator (page 2 of 2) ........22

Interconnection Drawing 10000005855—

Liquid-Cooled 100A Generator (page 1 of 2) ...23

Interconnection Drawing 10000005855—

Liquid-Cooled 100A Generator (page 2 of 2) ...24

Interconnection Drawing 10000005855—

Liquid-Cooled 200A Generator (page 1 of 2) ...25

Interconnection Drawing 10000005855—

Liquid-Cooled 200A Generator (page 2 of 2) ...26

Table of Contents

iv Automatic Transfer Switch Owner’s Manual

This page intentionally left blank.

Introduction and Safety

Automatic Transfer Switch Owner’s Manual 1

Section 1: Introduction and Safety

Introduction

Thank you for purchasing a Generac Power Systems Inc.

product. This unit has been designed to provide high

performance, efficient operation, and years of use when

maintained properly.

Read this manual thoroughly and understand all of the

instructions, cautions, and warnings before using this

equipment. If any section of the manual is not

understood, contact your nearest authorized dealer, or

contact Generac Customer Service at 1-888-436-3722

(1-888-GENERAC), or www.generac.com with any

questions or concerns.

The owner is responsible for proper maintenance and

safe use of the equipment. Before operating or servicing

this transfer switch:

•Study all warnings in this manual and on the

product carefully.

•Become familiar with this manual and the unit

before use.

•Refer to the installation sections of the manual for

instructions on final assembly procedures. Follow

the instructions completely.

Save these instructions for future reference. ALWAYS

supply this manual to any individual that will use this

equipment.

The information in this manual is accurate based on

products produced at the time of publication. The

manufacturer reserves the right to make technical

updates, corrections, and product revisions at any time

without notice.

Safety Rules

The manufacturer cannot anticipate every possible

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 technique that the manufacturer

does not specifically recommend, verify that it is safe for

others. Also make sure the procedure, work method or

operating technique utilized does not render the

equipment unsafe.

Safety Symbols and Meanings

Throughout this publication, and on tags and decals

affixed to the transfer switch, DANGER, WARNING,

CAUTION and NOTE blocks are used to alert personnel

to special instructions about a particular operation that

may be hazardous if performed incorrectly or carelessly.

Observe them carefully. Their definitions are as follows:

NOTE: Notes contain additional information important to

a procedure and will be found within the regular text of

this manual.

These safety alerts cannot eliminate the hazards that

they indicate. Common sense and strict compliance with

the special instructions while performing the action or

service are essential to preventing accidents.

(000100a)

WARNING

Consult Manual. Read and understand manual

completely before using product. Failure to

completely understand manual and product

could result in death or serious injury.

(000001)

DANGER

Indicates a hazardous situation which, if not avoided,

will result in death or serious injury.

(000002)

WARNING

Indicates a hazardous situation which, if not avoided,

could result in death or serious injury.

(000003)

CAUTION

Indicates a hazardous situation which, if not avoided,

could result in minor or moderate injury.

Introduction and Safety

2Automatic Transfer Switch Owner’s Manual

Electrical Hazards

(000129)

DANGER

Electrocution. High voltage is present at

transfer switch and terminals. Contact with live

terminals 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.

(000145)

DANGER

Electrocution. In the event of electrical accident,

immediately shut power OFF. Use non-conductive

implements to free victim from live conductor. Apply

first aid and get medical help. Failure to do so will

result in death or serious injury.

(000237)

DANGER

Electrical backfeed. Use only approved switchgear to

isolate generator from the normal power source.

Failure to do so will result in death, serious injury,

and equipment damage.

(000195)

DANGER

Electrocution, equipment and property damage.

Handle transfer switches carefully when installing.

Never install a damaged transfer switch. Doing so

could result in death or serious injury, equipment

and property damage.

(000123)

DANGER

Electrocution. Turn utility supply OFF before

working on utility 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 result in death or serious injury.

Automatic start-up. Disconnect utility power and

render unit inoperable before working on unit.

Failure to do so will result in death or serious injury.

(000191)

DANGER

(000119)

Equipment malfunction. Installing a dirty or damaged

transfer switch will cause equipment malfunction and

will result in death or serious injury.

DANGER

(000155)

WARNING

Only a trained and licensed electrician should perform

wiring and connections to unit. Failure to follow proper

installation requirements could result in death, serious

injury, and damage to equipment or property.

(000120)

CAUTION

Equipment damage. Verify all conductors are

tightened to the factory specified torque value.

Failure to do so could result in damage

to the switch base.

(000121)

CAUTION

Equipment damage. Perform functional tests in the

exact order they are presented in the manual.

Failure to do so could result in equipment damage.

(000134a)

CAUTION

Equipment damage. Exceeding rated voltage

and current will damage the auxiliary contacts.

Verify that voltage and current are within specification

before energizing this equipment.

Introduction and Safety

Automatic Transfer Switch Owner’s Manual 3

General Hazards

•Competent, qualified personnel should install,

operate and service this equipment. Adhere strictly

to local, state and national electrical and building

codes. When using this equipment, comply with

regulations established by the National Electrical

Code (NEC), CSA Standard; C22.1 Canadian

Electric Code, the Occupational Safety and Health

Administration (OSHA), or the local agency for

workplace health and safety.

•If working on this equipment while standing on

metal or concrete, place insulative mats over a dry

wood platform. Work on this equipment only while

standing on such insulative mats.

•Never work on this equipment while physically or

mentally fatigued.

•Any voltage measurements should be performed

with a meter that meets UL3111 safety standards,

and meets or exceeds overvoltage class CAT III.

(000237)

DANGER

Electrical backfeed. Use only approved switchgear to

isolate generator from the normal power source.

Failure to do so will result in death, serious injury,

and equipment damage.

(000129)

DANGER

Electrocution. High voltage is present at

transfer switch and terminals. Contact with live

terminals will result in death or serious injury.

(000123)

DANGER

Electrocution. Turn utility supply OFF before

working on utility connections of the transfer

switch. 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

Electrocution. Do not wear jewelry while

working on this equipment. Doing so will

result in death or serious injury.

(000213)

DANGER

Electrocution. Only authorized personnel should

access transfer switch interior. Transfer switch

doors should be kept closed and locked. Failure to

do so will result in death or serious injury.

Automatic start-up. Disconnect utility power and

render unit inoperable before working on unit.

Failure to do so will result in death or serious injury.

(000191)

DANGER

(000145)

DANGER

Electrocution. In the event of electrical accident,

immediately shut power OFF. Use non-conductive

implements to free victim from live conductor. Apply

first aid and get medical help. Failure to do so will

result in death or serious injury.

(000209a)

WARNING

This product is not intended to be used in

a critical life support application. Failure to

adhere to this warning could result in

death or serious injury.

WARNING

This unit is not intended for use as a prime power

source. It is intended for use as an intermediate power

supply in the event of temporary power outage only.

See individual unit specifications for required

maintenance and run times pertaining to use. (000247)

(000194)

WARNING

Sudden start-up. Always set the safety disconnect

switch to MANUAL before working on equipment.

Failure to do so could result in death or serious injury.

Introduction and Safety

4Automatic Transfer Switch Owner’s Manual

This page intentionally left blank.

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

General Information

6Automatic Transfer Switch Owner’s Manual

Load Center Circuit Breakers

This switch is listed for use with the following one inch

breakers:

NOTE: For branch circuits and feeders over 50 amps,

only listed Siemens or Murray circuit breakers shall be

used.

Service Disconnect Breaker and Terminal Ratings

Transfer Switch Data Decal

A data decal is permanently affixed to the transfer switch

enclosure. Use this transfer switch only with the specific

limits shown on the data decal and on other decals and

labels that may be affixed to the switch. This will prevent

damage to equipment and property.

When requesting information or ordering parts for this

equipment, make sure to include all information from the

data decal.

For future reference, record the Model and Serial

numbers in the space provided on the front cover of this

manual

Transfer Switch Enclosure

The standard switch enclosure is a National Electrical

Manufacturer’s Association (NEMA) and UL Type 1,

intended for indoor installation only.

Safe Use of Transfer Switch

Before installing, operating or servicing this equipment,

read the Safety Rules carefully. Comply strictly with all

Safety Rules to prevent accidents and/or damage to the

equipment. The manufacturer recommends that a copy

of the Safety Rules be posted near the transfer switch.

Also, be sure to read all instructions and information

found on tags, labels and decals affixed to the

equipment.

Three publications that outline the safe use of transfer

switches are the following:

•NFPA 70; National Electrical 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 current information.

Load Management Options

Load management systems are designed to work

together to prevent a generator from being overloaded by

large appliance loads. A Smart A/C Module (SACM) is

standard in these switches. An optional Smart

Management Module (SMM) is also available.

Manufacturer SCCR Amperage Rating

Siemens 22 kA (200A)

10 kA (100A)

Murray

Eaton 10 kA (100A and 200A)

including GFCI, AFCI and

tandem breakers up to 50 amps

Square D Homeline

Breaker Specification

Description Siemens MBK-100A Type EQ8681

or MBK-200A Type EQ8695

2-pole, Single Phase

Voltage / Amp

Rating

120/240 VAC, 100A or 200A

(80% Continuous Current Rated)

Frequency 60 Hertz

100 Amp Utility Service and

Disconnect Breakers Tightening Torque

Utility

Connection

#4 - #3/0 AWG

(Cu/Al)

55 in-lbs. (6.2 Nm)

Generator / Load

Connection

#14 - 1/0 (Cu/Al) 50 in-lbs. (5.6 Nm)

Neutral / Ground

Bars

10-14 Cu/10-12 Al 20 in-lbs. (2.3 Nm)

8 AWG 25 in-lbs. (2.8 Nm)

6-4 AWG 35 in-lbs. (4.0 Nm)

Ground

Conductors Only

(2) or (3) 14 AWG 20 in-lbs. (2.3 Nm)

(2) 12-10 AWG 20 in-lbs. (2.3 Nm)

Control Wiring 11 in-lbs. (1.2 Nm)

200 Amp Utility Service and

Disconnect Breakers Tightening Torque

Utility

Connection

#1 - 300MCM(Cu/Al) 250 in-lbs.

(28.2 Nm)

Generator / Load

Connection

#6 - 250MCM (Cu/Al) 275 in-lbs.

(31.0 Nm)

Neutral #4 - 2/0 40–50 in-lbs.

(4.5–5.6 Nm)

Ground (2) or (3) 14 AWG 20 in-lbs. (2.3 Nm)

(2) 12-10 AWG 20 in-lbs. (2.3 Nm)

Control Wiring 11 in-lbs. (1.2 Nm)

(000100a)

WARNING

Consult Manual. Read and understand manual

completely before using product. Failure to

completely understand manual and product

could result in death or serious injury.

Ce manuel convient aux modèles suivants

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