Generac Power Systems RTSW100G3 Manual de usuario

Owner’s Manual

For

Automatic Transfer Switch

100 - 200 Amp, Three Phase, Service Entrance

Model Numbers

RTSW100G3

RTSW100J3

RTSW100K3

RTSW200G3

RTSW200J3

RTSW200K3

MODEL NUMBER: _________________________

SERIAL NUMBER: _________________________

DATE PURCHASED:________________________

WWW.GENERAC.COM

1-888-GENERAC

(1-888-436-3722)

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

SAVE THIS MANUAL FOR FUTURE REFERENCE

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.

Table of Contents

Automatic Transfer Switch Owner’s Manual iii

Section 1: Introduction and Safety

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

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

Safety Symbols and Meanings ...........................2

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

Section 2: General Information

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

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

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

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

Utility Service Circuit Breaker (if equipped) .................6

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

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

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

Section 3: Installation

Introduction ..........................................................7

Mounting ...............................................................7

Connecting Power Source and Load Lines .......7

Connecting Start Circuit Wires ...........................7

Connecting Auxiliary Contacts ..........................8

Section 4: Operation

Functional Tests and Adjustments ....................9

Manual Operation ................................................9

Close to Normal Source Side ......................................9

Close to Standby Source Side ....................................9

Return to Normal Source Side ....................................9

Voltage Checks ..................................................10

Utility Voltage Checks ...............................................10

Generator Voltage Checks ........................................10

Generator Tests Under Load ............................11

Checking Automatic Operation ........................11

Installation Summary ........................................11

Shutting Generator Down While Under Load ..11

Section 5: Drawings and Diagrams

Installation Drawing .......................................... 13

100–200A Three Phase (Drawing 0L2826) ...............13

\Interconnection Drawing ................................. 14

100-200A RTS Series Three Phase (Drawing 0L2828,

Sheet 1 of 2) .....................................................14

\Interconnection Drawing ................................. 15

100-200A RTS Series Three Phase (Drawing 0L2828,

Sheet 2 of 2) .....................................................15

Schematic Diagram ........................................... 16

100-200A 240VAC (Drawing 0L2832, Sheet 1 of 2) .16

Wiring Diagram .................................................. 17

100-200A 240VAC (Drawing 0L2832, Sheet 2 of 2) .17

Schematic Diagram ........................................... 18

100-200A 240VAC (Drawing 0L2832, Sheet 1 of 2) .18

Wiring Diagram .................................................. 19

100-200A 240VAC (Drawing 0L2832, Sheet 2 of 2) .19

Schematic Diagram ........................................... 20

100-200A 480VAC (Drawing 0L2833, Sheet 1 of 2) .20

Schematic Diagram ........................................... 21

100-200A 480VAC (Drawing 0L2833, Sheet 2 of 2) .21

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 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 Assembly section 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

machine.

THE INFORMATION CONTAINED HEREIN WAS

BASED ON MACHINES IN PRODUCTION AT THE

TIME OF PUBLICATION. GENERAC RESERVES THE

RIGHT TO MODIFY THIS MANUAL AT ANY TIME.

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.

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 warnings 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.

(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

Safety Symbols and Meanings

(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.

(000131a)

DANGER

Electrical backfeed. Use only approved switchgear to

isolate generator when electrical utility is the primary

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

(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.

(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

•Any AC generator that is used for backup power if

a NORMAL (UTILITY) power source failure occurs

must be isolated from the NORMAL (UTILITY)

power source by means of an approved transfer

switch. Failure to properly isolate the NORMAL

and STANDBY power sources from each other

may result in injury or death to electric utility

workers, due to backfeed of electrical energy.

•Extremely high power and dangerous voltages are

present inside an installed transfer switch. Any

contact with high voltage terminals, contacts or

wires can result in LETHAL electric shock, while

arc flash can cause blindness and severe burns.

DO NOT WORK ON THE TRANSFER SWITCH

UNTIL YOU HAVE CONFIRMED THAT ALL

POWER SUPPLIES TO THE SWITCH ARE

TURNED OFF.

•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 the National Electrical Code (NEC),

CSA Standard; C22.1 Canadian Electric Code and

Occupational Safety and Health Administration

(OSHA) have established.

•Never handle any kind of electrical device while

standing in water, while barefoot, or while hands or

feet are wet. DANGEROUS ELECTRICAL SHOCK

MAY RESULT.

•Because jewelry conducts electricity, wearing it

may cause dangerous electrical shock. Remove all

jewelry (such as rings, watches, bracelets, etc.)

before working on this equipment.

•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.

•Keep the transfer switch enclosure door closed

and bolted at all times. Only qualified personnel

should be permitted access to the switch interior.

•When an automatic transfer switch is installed for a

standby generator set, the generator engine may

crank and start at any time without warning. To

avoid possible injury that might be caused by such

sudden start-ups, the system’s automatic start

circuit must be disabled before working on or

around the generator or transfer switch. Then

place a “DO NOT OPERATE” tag on the transfer

switch and on the generator.

•Any voltage measurements should be performed

with a meter that meets UL3111 safety standards,

and meets or exceeds overvoltage class CAT III.

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.

Every effort has been expended to make sure that the

contents of this manual are both accurate and current.

The manufacturer, however, reserves the right to change,

alter or otherwise improve the product or manual at any

time without prior notice.

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 (if equipped), 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

These switches (Figure 2-1) 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.

Solderless, screw-type terminal lugs are standard.

The conductor size range is as follows:

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).

The 100A transfer switch is suitable for use on a circuit

capable of 14,000 rms symmetrical amperes, 480 VAC

maximum. The 200A transfer switch is suitable for use on

a circuit capable of 18,000 rms symmetrical amperes,

480 VAC maximum.

Figure 2-1. Typical Single-Phase ATS

Transfer Mechanism

Switch

Rating

Wire Size Torque

100A #6–2/0 AWG 2/0–#3: 50 in-lb (5.6 Nm)

#4–6: 45 in-lb (5.1 Nm)

#8: 40 in-lb (4.5 Nm)

#10–#14: 35 in-lb (4.0 Nm)

200A #4-400 MCM 275 in-lb (31.1 Nm)

A Utility Lugs (N1, N2)

B Generator Lugs (E1, E2)

C Load Lugs (T1, T2)

000218

General Information

6Automatic Transfer Switch Owner’s Manual

Utility Service Circuit Breaker

The utility service circuit breakers for the 100/200 amp

models are:

•Type 225AF, 3 Pole

•240/480 VAC, 100A/200A

•50/60 Hertz

•Wire range:

– Line—300 MCM - 6 STR (Cu/Al)

•The conductor tightening torque is:

– Line—375 in-lbs (42.4 Nm)

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 3R type. UL

and NEMA 3R (indoor/outdoor rated) type enclosures

primarily provide a degree of protection against falling

rain and sleet, and are undamaged by the formation of

ice on the enclosure.

Safe Use of Transfer Switch

Before installing, operating or servicing this equipment,

read Introduction and Safety carefully. Comply strictly

with all information presented in Introduction and

Safety to prevent accidents and/or damage to the

equipment. The manufacturer recommends that a copy

of Introduction and Safety 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.

Two 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

NOTE: It is essential to use the latest version of any

standard to ensure correct and current information.

(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.

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