Generac Power Systems RXUW200A3 Bedienungsanleitung

Owner’s Manual

For

Automatic Transfer Switch

150 - 200 Amp, Ringless Meter Socket, Service Entrance Rated

Model Number

Integrated Meter Transfer Switch

RXUW200A3 – 200A

RXUW200A3LV – 200A with Lever Bypass

RXUW150A3 – 150A

RXUW150A3LV – 150A with Lever Bypass

Upgradeable Integrated Meter Transfer Switch

RBU200A3 – 200A

RBU200A3LV – 200A with Lever Bypass

RBU150A3 – 150A

RBU150A3LV – 150A with Lever Bypass

G0074000 – RBU Transfer Switch Upgrade Kit

SERIAL NUMBER: _________________________

DATE PURCHASED:________________________

WWW.GENERAC.COM

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

ii Automatic Transfer Switch Owner’s Manual

(000393a)

WARNING

CANCER AND REPRODUCTIVE HARM

www.P65Warnings.ca.gov.

Automatic Transfer Switch Owner’s Manual iii

Table of Contents

Section 1: Safety

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

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

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

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

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

Section 2: General Information

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

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

Transfer Switch Mechanism (RXU Models Only) ........5

Utility Service Circuit Breaker ......................................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) .........................................6

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

Accessories ..........................................................8

Section 3: Installation

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

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

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

Connecting Power Source (RBU and RXUW) .10

Connecting Alternate Power Source (RXUW

Only) ....................................................................11

Connecting Start Circuit Wires .........................13

Connecting SACM .............................................13

Control of Air Conditioner Load .................................13

Auxiliary Contact ...............................................14

Fault Current Label ............................................14

Install Transfer Switch and SACM Kit

(RBU Only) ..........................................................15

Section 4: Operation (RXUW Models Only)

Functional Tests and Adjustments .................. 17

Manual Operation .............................................. 17

Close to Utility Source Side .......................................17

Close to Generator Source Side ...............................18

Return to Utility Source Side .....................................18

Voltage Checks .................................................. 18

Utility Voltage Checks ...............................................18

Generator Voltage Checks ........................................18

Generator Tests Under Load ............................ 18

Checking Automatic Operation ........................ 19

Installation Summary ........................................ 19

Shutting Generator Down While Under Load

or During a Utility Outage ................................. 19

Preparing for Maintenance ............................... 20

Testing The SACM ............................................. 20

SACM Fuse Service ........................................... 20

Section 5: Drawings and Diagrams

Installation Drawings ........................................ 21

No. A0000258227-A: 150-200A SER METER

MAIN .........................................................................21

Interconnection Drawings ................................ 22

No. A0000258228-A (Part 1 of 2)—Liquid-Cooled

Generator ..................................................................22

No. A0000258228-A (Part 2 of 2)—Air-Cooled

Generator ..................................................................23

iv Automatic Transfer Switch Owner’s Manual

This page intentionally left blank.

Safety

Automatic Transfer Switch Owner’s Manual 1

Section 1: 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, and instruct them

on how to correctly start, operate, and stop the unit in

case of emergency.

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.

(000100a)

Consult Manual. Read and understand manual

completely before using product. Failure to

completely understand manual and product

could result in death or serious injury.

WARNING

(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.

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.

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. (000195)

DANGER

(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.

(000191)

DANGER

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.

(000119)

DANGER

Equipment malfunction. Installing a dirty or damaged

transfer switch will cause equipment malfunction and

will result in death or serious injury.

(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)

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.

CAUTION

(000121)

Equipment damage. Perform functional tests in the

exact order they are presented in the manual.

Failure to do so could result in equipment damage.

CAUTION

(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.

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; 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.

(000191)

DANGER

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.

(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.

(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.

(000247a)

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.

WARNING

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 all packing material is completely removed from

the switch prior to installation.

Equipment Description

This automatic transfer switch is used for transferring

electrical load from a utility (normal) power source to a

generator (standby) power source. 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), and

a Smart A/C module incorporating fuses and two terminal

blocks for transfer switch connections.

This transfer switch is equipped with a separately

accessible Utility Entry cabinet which houses a standard

4 Jaw Meter Socket. It is provided with a means for the

Electrical Utility provider to lock. An optional 5th Jaw Kit

is available if required.

The lower cabinet contains the Automatic Transfer

Switch and Service Disconnect Main Circuit Breaker with

Load Shed Module and customer terminations. RBU

Models do not come equipped with a transfer switch.

They may be upgraded to include a transfer switch with

G0074000 Upgrade Kit.

NOTE: Meters are retained by either a Ring or Ringless

method. Verify you have the proper type to meet local

code requirements.

Transfer Switch Mechanism (RXU Models Only)

See Figure 2-1. This switch is 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 of the 4 Jaw Meter Socket 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 ETL listed transfer switch is for use in optional

standby systems only (NEC article 702).

A 150A or 200A rated switch is suitable for use on a

circuit capable of 22,000 RMS symmetrical amperes, 240

VAC when protected by a circuit breaker without an

adjustable short time response or by fuses.

Figure 2-1. Typical Single-Phase ATS Transfer

Mechanism

Switch

Rating Wire Range Conductor

Tightening Torque

150/200A #6-250 MCM (Cu/Al) 275 in-lbs (31 Nm)

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

Utility Service Circuit Breaker

The utility service circuit breakers for 150/200 amp

models are:

•Type 225AF, 2-pole

•22,000 A/C

•120/240VAC, 150A/200A

•50/60 Hertz

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 3R type. ETL

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.

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

•ANSI/UL 414 Meter Sockets

•UL 891 (Busbar)

•ANSI C12.7 Meter Sockets

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

standard to guarantee 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

provided as standard equipment with this switch. An

optional Smart Management 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

frequency (overload). Loads to be “shed” are in 4 priority

levels on the module.

See Figure 2-2. 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.

Four LEDs, located on the SACM (B), illuminate when a

load is connected and powered.

(000100a)

Consult Manual. Read and understand manual

completely before using product. Failure to

completely understand manual and product

could result in death or serious injury.

WARNING

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