Generac Power Systems RXSW400A3CUL Bedienungsanleitung

Owner’s Manual

For

Automatic Transfer Switch

400 Amp, Service Entrance

MODEL NUMBER: RXSW400A3CUL

SERIAL NUMBER: _________________________

DATE PURCHASED:________________________

WWW.GENERAC.COM

1-888-GENERAC

(888-436-3722)

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

Pour le français, visiter : http://www.generac.com/service-support/product-support-lookup

SAVE THIS MANUAL FOR FUTURE REFERENCE

(000209b)

WARNING

Loss of life. 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.

ii Automatic Transfer Switch Owner’s Manual

(000393a)

WARNING

CANCER AND REPRODUCTIVE HARM

www.P65Warnings.ca.gov.

Automatic Transfer Switch Owner’s Manual iii

Section 1: Introduction and Safety

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

Read This Manual Thoroughly ....................................1

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

Electrical Hazards ................................................1

General Hazards ..................................................2

Section 2: General Information

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

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

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

Utility Service Circuit Breaker ......................................5

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

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

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

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

Smart A/C Module (SACM) .........................................6

Smart Management Module (SMM) ............................7

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

Section 3: Installation

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

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

Open Enclosure ...................................................9

Connecting Power Source and Generator

Power Supply ...............................................10

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

Connecting SACM .............................................11

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

Auxiliary Contacts .............................................13

Fault Current Label ............................................13

Section 4: Operation

Functional Tests and Adjustments ..................15

Manual Operation ..............................................15

Close to Normal Source Side ....................................16

Close to Standby Source Side ..................................16

Return to Normal Source Side ..................................16

Voltage Checks ..................................................16

Utility Voltage Checks ...............................................16

Generator Voltage Checks ........................................16

Generator Tests Under Load ............................ 17

Checking Automatic Operation ........................ 17

Installation Summary ........................................ 17

Shutting Generator Down While

Under Load .................................................. 17

Shutting Generator Down To Perform

Maintenance ................................................ 18

Testing The SACM ............................................. 18

SACM Fuse Service ........................................... 18

Testing The SMM ............................................... 18

Section 5: Drawings and Diagrams

Installation Drawing .......................................... 19

No. 0K2438-A 400A Service Entrance Rated ...........19

Interconnection Drawing .................................. 20

No. 10000041110 (Part 1 of 2)—Liquid-Cooled

Generator .........................................................20

No. 10000041110 (Part 2 of 2)—Air-Cooled

Generator .........................................................21

Schematic and Wiring Diagram ....................... 22

No. 10000041100 (Part 1 of 2)—Schematic

Diagram ............................................................22

No. 10000041100 (Part 2 of 2)—Wiring Diagram .....23

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

If any section of this manual is not understood, contact

the nearest Independent Authorized Service Dealer

(IASD) or Generac Customer Service at 1-888-436-3722

(1-888-GENERAC), or visit www.generac.com for start-

ing, operating, and servicing procedures. The owner is

responsible for proper maintenance and safe use of the

unit.

SAVE THESE INSTRUCTIONS for future reference. This

manual contains important instructions that must be fol-

lowed during placement, operation, and maintenance of

the unit and its components. Always supply this manual

to any individual that will use this unit.

The information in this manual is accurate based on

products produced at the time of publication. The manu-

facturer reserves the right to make technical updates,

corrections, and product revisions at any time without

notice.

Safety Rules

The manufacturer cannot anticipate every possible cir-

cumstance that might involve a hazard. The alerts in this

manual, and on tags and decals affixed to the unit, are

not all inclusive. If using a procedure, work method, or

operating technique that the manufacturer does not spe-

cifically recommend, verify that it is safe for others and

does not render the equipment unsafe.

Throughout this publication, and on tags and decals

affixed to the unit, 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. Alert 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.

Electrical Hazards

(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.

(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.

Introduction and Safety

2Automatic Transfer Switch Owner’s Manual

General Hazards

(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

(000155a)

WARNING

Electric shock. 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 equipment or property damage.

(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.

(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.

Introduction and Safety

Automatic Transfer Switch Owner’s Manual 3

IMPORTANT NOTE: See individual unit specifications

for required maintenance and run times pertaining to

use.

•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; 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.

Any voltage measurements should be performed with a

meter that meets UL3111 safety standards, and meets or

exceeds overvoltage class CAT III.

(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.

WARNING

Equipment damage. 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.

Doing so could result in death, serious injury, and

equipment damage. (000247a)

WARNING

Risk of injury. Do not operate or service this machine

if not fully alert. Fatigue can impair the ability to service

this equipment and could result in death or serious

injury. (000215)

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

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. Verify that all

parts are included.

Verify 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 pre-

vents 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, a Smart A/C module, fuses, terminal strip,

and fuse holder for connection of sensing wires.

This UL/CUL listed transfer switch has locking provisions

for the utility entry cabinet. In addition, it has a lockout/

tagout provision for the service entrance circuit breaker.

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.

Solderless, screw-type terminal lugs are standard.

The conductor size range is as follows:

This transfer switch is suitable for control of motors, elec-

tric discharge lamps, tungsten filament and electric heat-

ing 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% of the switch rating.

This UL listed transfer switch is for use in optional

standby systems only (NEC article 702).

This transfer switch is suitable for use on a circuit

capable of 22,000 rms symmetrical amperes, 240 VAC

maximum.

Figure 2-1. Typical Single-Phase ATS Transfer

Mechanism

Utility Service Circuit Breaker

The utility service circuit breaker is:

Generac, 400AF

•120/240VAC, 400A

•50/60 Hertz

•Wire range: (1) #4-600 MCM or (2) 1/0-250 MCM

(Cu/Al)

•The conductor torque specification is 375 in-lbs

(42.4 Nm).

Switch

Rating Wire Range Conductor

Torque Specification

400A

(1) #4-600 MCM

(Cu/Al)

(2) 1/0-250 MCM

(Cu/Al)

375 in-lbs (42.4 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

Transfer Switch Data Decal

See Figure 2-2. 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 prop-

erty.

Figure 2-2. Data Decal Location

When requesting information or ordering parts for this

equipment, make sure to include all information from the

data decal.

For future reference, record the serial number 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/CUL 3R

type. UL/CUL and NEMA 3R (indoor/outdoor rated) type

enclosures primarily provide a degree of protection

against falling rain and sleet; are undamaged by the

formation of ice on the enclosure.

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.

The following publications outline the safe use of transfer

switches:

•Canadian Electrical Code CE; CSA C22.1

•NFPA 70E: Standard for Electrical Safety In The

Workplace

•UL/CUL 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.

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 Manage-

ment Module (SMM) is also available.

Smart A/C Module (SACM)

Up to four air conditioner loads can be managed by the

SACM. The SACM manages the loads by “shedding” the

connected loads in the event of a drop in generator fre-

quency (overload). Loads to be “shed” are in four priority

levels on the module.

See Figure 2-3. Priorities A/C 1-4 (A) have connections

for an air conditioner. To control an air conditioner, no

additional equipment is required. Internal normally closed

relays interrupt the 24 VAC thermostat control signal to

disable the air conditioner load.

Figure 2-3. Smart A/C Module (SACM)

008981

(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.

T1N1N2

0 DC GROUND

194 +12 VDC

23 TRANSFER

Replace with Littelfuse 021606.3XHP,

Optifuse FCD-6.3A or

Generac 10000005117 250 vac, 6.3A

004436

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