Generac Non-Service Rated, 200A RTSR200A3S Manuel utilisateur

This manual should remain with the unit.

Owner's Manual

Automatic Transfer Switch



NOT INTENDED FOR USE IN CRITICAL LIFE SUPPORT

APPLICATIONS.



THIS PRODUCT CAN BE INSTALLED BY

THE HOMEOWNER. HOWEVER, IF YOU ARE

UNCOMFORTABLE WITH THE SKILLS OR TOOLS

REQUIRED, HAVE A QUALIFIED ELECTRICIAN OR

CONTRACTOR PERFORM THE INSTALLATION.



DEADLY EXHAUST FUMES! OUTDOOR INSTALLATION

ONLY!

Reference all appropriate documentation.

Safety Rules .................................................Inside Front Cover

General Information .................................................................2

1.1 Introduction ................................................................................2

1.2 Unpacking .................................................................................. 2

1.3 Equipment Description ................................................................2

1.4 Transfer Switch Data Decal ......................................................... 3

1.5 Transfer Switch Enclosure ...........................................................3

1.6 Safe Use Of Transfer Switch........................................................ 3

Installation ............................................................................... 3

2.1 Introduction to Installation ...........................................................3

2.2 Mounting .................................................................................... 3

2.3 Connecting Power Source and Load Lines ..................................3

2.4 Connecting Start Circuit Wires ....................................................4

2.5 Overload Prevention Control Board (OPCB) ................................. 4

2.6 Connections of Power Supply for Contactors ..............................6

Operation .................................................................................6

3.1 Functional Tests & Adjustments ..................................................6

3.2 Manual Operation ........................................................................7

3.3 Voltage Checks ...........................................................................8

3.4 Generator Tests Under Load ........................................................8

3.5 Checking Automatic Operation ....................................................8

3.6 Testing Overload Prevention Control Board (OPCB) ......................9

3.7 Installation Summary .................................................................. 9

Electrical Data .......................................................................10

Installation Diagrams .............................................................13

Notes .....................................................................................16

Manual técnico ..................................................... 19

Manual technique ................................................. 31



SAVE THESE INSTRUCTIONS! Read the follow-

ing information carefully before attempting to

install, operate or service this equipment. Also

read the instructions and information on tags,

decals, and labels that may be affixed to the

transfer switch. Replace any decal or label that

is no longer legible.



DANGER! Connection of a generator to an

electrical system normally supplied by an

electric utility shall be by means of suitable

transfer equipment so as to isolate the elec-

tric system from utility distribution system

when the generator is operating (Article 701

Legally Required Standby Systems or Article

702 Optional Standby Systems, as applicable).

Failure to isolate electric system by these

means may result in damage to generator and

may result in injury or death to utility workers

due to backfeed of electrical energy.

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 the manufacturer

does not specifically recommend, ensure that it is safe for others.

Also make sure the procedure, work method or operating technique

chosen does not render the transfer switch unsafe.

Throughout this publication, and on tags and decals affixed to the

generator, 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 care-

lessly. Observe them carefully. Their definitions are as follows:

After this heading, read instructions that, if not

strictly complied with, will result in serious

personal injury, including death.

Table of Contents

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.

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.

1

After this heading, read instructions that, if not

strictly complied with, could result in serious

personal injury, including death.

After this heading, read instructions that, if not

strictly complied with, might result in minor or

moderate injury.

NOTE:

After this heading, read instructions that, if not strictly complied

with, may result in damage to equipment and/or property.

These safety warnings cannot eliminate the hazards that they

indicate. Common sense and strict compliance with the special

instructions while performing the service are essential to preventing

accidents.

Four commonly used safety symbols accompany the DANGER,

WARNING and CAUTION blocks. The type of information each indi-

cates follows:



This symbol points out important safety infor-

mation that, if not followed, could endanger

personal safety and/or property.



This symbol points out potential explosion

hazard.



This symbol points out potential fire hazard.



This symbol points out potential electrical

shock hazard.

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.

• Improper or unauthorized installation, operation, service or repair

of the equipment is extremely dangerous and may result in death,

serious personal injury, or damage to equipment and/or personal

property.

• Extremely high and dangerous power voltages are present

inside an installed transfer switch. Any contact with high voltage

terminals, contacts or wires will result in extremely hazardous,

and possibly LETHAL, electric shock. DO NOT WORK ON THE

TRANSFER SWITCH UNTIL ALL POWER VOLTAGE SUPPLIES

TO THE SWITCH HAVE BEEN POSITIVELY TURNED OFF.

• Competent, qualified personnel should install, operate and service

this equipment. Adhere strictly to local, state and national electri-

cal 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.

• Remove all jewelry (such as rings, watches, bracelets, etc.) before

working on this equipment.

• If work must be done 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.

• In case of an accident caused by electric shock, immediately shut

down the source of electrical power. If this is not possible, attempt

to free the victim from the live conductor but AVOID DIRECT

CONTACT WITH THE VICTIM. Use a nonconducting implement,

such as a dry rope or board, to free the victim from the live conduc-

tor. If the victim is unconscious, apply first aid and get immediate

medical help.

• When an automatic transfer switch is installed for a standby gen-

erator 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. Remove the Negative (Neg) or (–)

battery cable.

For authorized service,

reference the dealer locator

number found inside the

generator owner’s manual.

Safety Rules

2

1.1 INTRODUCTION

This manual has been prepared especially for the purpose of familiar-

izing personnel with the design, application, installation, operation

and servicing of the applicable equipment. Read the manual carefully

and comply with all instructions. This will help to prevent accidents or

damage to equipment that might otherwise be caused by careless-

ness, 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.

1.2 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.

1.3 EQUIPMENT DESCRIPTION

The automatic transfer switch is used for transferring critical 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 sub-

stantially reduced and the GENERATOR source voltage and frequen-

cy 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, a control relay,

an Overload Prevention Control Board, a terminal strip and fuse

holder for connection of sensing wires.

This switch is suitable for control of motors, electric discharge lamps,

tungsten filament and electric heating equipment 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).

A 100A rated switch is suitable for use on circuits capable of delivering

not more than 10,000 RMS symmetrical amperes, 250 VAC maxi-

mum, when protected by a 100A maximum circuit breaker (Siemens

types QP or BQ) or 150A maximum circuit breaker (Square D Q2,

Westinghouse CA-CAH, General Electric TQ2 and Siemens QJ2).

A 200A rated switch is suitable for use on a circuit capable of 10,000

RMS symmetrical amperes, 240 VAC when protected by a circuit

breaker without an adjustable short time response or by fuses.

The Overload Prevention Control Board is designed to prevent an

overload on the generator when it is supplying the customer loads.

See figure 1.1. Up to six loads can be managed by the OPCB; 2 air

conditioner loads and 4 other loads. The OPCB manages the loads

by “shedding” the connected loads in the event of a drop in generator

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

levels on the OPCB.

• Priority 1 and 2 has connections for both one air conditioner and

one contactor. Both an air conditioner and a contactor can be

used at the same time if desired. To control an air conditioner,

no additional equipment is required. Internal relays interrupt the

thermostat 24VAC control signal to disable the air conditioner load.

• Priority 3 and 4 have connections for one contactor only.

• Four LEDs, located on the Overload Prevention Control Board,

will indicate when a load priority level is enabled. When loads are

connected, the LEDs will be illuminated.

• Any loads, including central air conditioners, can be controlled via

a contactor that must be purchased separately. Up to four contac-

tors can be controlled by the Overload Prevention Control Board.

(The 24 Vac or 120 Vac is supplied through the OPCB to energize

each contactor coil).

• Generator overload condition is determined by generator frequen-

cy. Loads are shed when the frequency is <58Hz for 3 seconds or

<50Hz for ½ Second (for 60Hz).

The OPCB has a Test button which forces the unit to act as if an

overload has occurred. This button operates even when the transfer

signal is inactive.

Figure 1.1 — Overload Prevention Control Board

0 Ground

194 +12V

23 Transfer

T1

NEUTRAL

A/C 1

24V

A/C 2

24V

LOAD 1

LOAD 2

LOAD 3

LOAD

4

A/C 1 & LOAD 1

LOAD

SUPPLY

LOAD

SUPPLY

1

2

1

2

1

1A MAX

A/C 2 & LOAD 2

LOAD 3

LOAD 4

Air Conditioner Connections:

Up to two A/Cs can be

controller here via their low

voltage thermostat wires

Status LEDs: Shows which

loads are currently allowed to

run

Load Connections: Up to four

loads of any type can be

controlled via these

connections. A separate

contactor module is required

2

1

2

1

2

1

2

1

General Information

3

1.4 TRANSFER SWITCH DATA DECAL

A DATA DECAL is permanently affixed to the transfer switch enclo-

sure. Use this transfer switch only within 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.

Record the Model and Serial numbers in the space provided below for

future reference.

MODEL #

SERIAL #

1.5 TRANSFER SWITCH ENCLOSURE

The standard switch enclosure is a National Electrical Manufacturer’s

Association (NEMA) and UL 3R type. UL and NEMA 3R (indoor/out-

door rated) type enclosures primarily provide a degree of protection

against falling rain and sleet; is undamaged by the formation of ice on

the enclosure.

1.6 SAFE USE OF TRANSFER SWITCH

Before installing, operating or servicing this equipment, read the

SAFETY RULES (inside front cover) carefully. Comply strictly with all

SAFETY RULES to prevent accidents and/or damage to the equip-

ment. The manufacturer recommends that a copy of the SAFETY

RULES are 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.

2.1 INTRODUCTION TO INSTALLATION

This equipment has been wired and tested at the factory. Installing the

switch includes the following procedures:

• Mounting the enclosure.

• Connecting power source and load leads.

• Connecting the generator start and sensing circuit.

• Connecting any auxiliary contact (if needed)

• Overload Prevention Control Board loads (as required)

• Testing functions.

2.2 MOUNTING

Mounting dimensions for the transfer switch enclosure are in this

manual. Enclosures are typically wall-mounted. See the “Installation

Diagram” section.



Handle transfer switches carefully when install-

ing. Do not drop the switch. Protect the switch

against impact at all times, and against con-

struction grit and metal chips. Never install a

transfer switch that has been damaged.

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 rigid

supporting structure. To prevent switch distortion, level all mounting

points. If necessary, use washers behind mounting holes to level the

unit.

2.3 CONNECTING POWER SOURCE AND

LOAD LINES



Make sure to turn OFF both the UTILITY

(NORMAL) and EMERGENCY (STANDBY)

power supplies before trying to connect power

source and load lines to the transfer switch.

Supply voltages are extremely high and dan-

gerous. Contact with such high voltage power

supply lines will result in an extremely hazard-

ous, possibly lethal, electrical shock.

Wiring diagrams and electrical schematics are provided in this

manual. Power source and load connections are made at a transfer

mechanism, inside the switch enclosure.

2.3.1 2-POLE MECHANISM

These switches (Figure 2.1) 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.

Installation

4

Figure 2.1 — Typical 2-Pole Transfer Mechanism

(200 Amp Shown)

UTILITY

CLOSING

COIL

GENERATOR

CLOSING

COIL

UTILITY LUGS

GENERATOR

LUGS (E1 & E2)

LOAD LUGS (T1 & T2)

Solderless, screw-type terminal lugs are standard.

Switch

Rating

Wire Range

Conductor Tightening

Torque

100A #14-1/0 AWG 50 in-lbs.

200A #6-250 MCM 275 in-lbs.

Conductor sizes must be adequate to handle the maximum current to

which they will be subjected to, based on the 75°C column of tables,

charts, etc. used to size conductors. The installation must comply fully

with all applicable codes, standards and regulations.

Before connecting wiring cables to terminals, remove any surface

oxides from the cable ends with a wire brush. All power cables should

enter the switch next to transfer mechanism terminals. If ALUMINUM

conductors are used, apply corrosion inhibitor to conductors. Tighten

terminal lugs to the torque values as noted on the decal located on the

inside of the door. After tightening terminal lugs, carefully wipe away

any excess corrosion inhibitor.

All power cables should enter the switch next to the transfer mecha-

nism terminals.



Use a torque wrench to tighten the conductors,

being sure not to over tighten, or damage to

the switch base could occur. If not tightened

enough, a loose connection would result,

causing excess heat which could damage the

switch base.

Connect power source load conductors to clearly marked transfer

mechanism terminal lugs as follows:

1. Connect UTILITY (NORMAL) power source cables to switch

terminals N1, N2.

2. Connect EMERGENCY (STANDBY) source power cables to

transfer switch terminals E1, E2.

3. Connect customer LOAD leads to switch terminals T1, T2.

Conductors must be properly supported, of approved insulative quali-

ties, protected by approved conduit, and of the correct wire gauge size

in accordance with applicable codes.

Be sure to maintain proper electrical clearance between live metal

parts and grounded metal. Allow at least 1/2 inch for 100-400 amp

circuits.

2.4 CONNECTING START CIRCUIT WIRES

Control system interconnections (Electrical Data section) consist of

UTILITY 1 (N1), UTILITY 2 (N2) and LOAD (T1), and leads 23, 194

and 0. Recommended wire gauge sizes for this wiring depends on the

length of the wire, as recommended in the following chart:

MAXIMUM WIRE LENGTH

RECOMMENDED WIRE

SIZE

1-115 ft (1-35m) No. 18 AWG.

116-185 ft (36-56m) No. 16 AWG.

186-295 ft (57-89m) No. 14 AWG.

296-460 ft (90-140m) No. 12 AWG.

2.5 OVERLOAD PREVENTION CONTROL

BOARD (OPCB)

The OPCB can control an air conditioner (24 Vac) directly or a

separate contactor PPM (24 Vac or 120 Vac operating coil) which can

control any load connected to it. See Figure 2.2.

The Power Management Module (PMM) is not supplied with the trans-

fer switch. It can be purchased separately from the manufacturer. for

use with the Overload Prevention Control Board (OPCB) mounted in

the transfer switch. The OPCB is designed and connected to power

the PMM contactor operating coil. The OPCB is supplied by a 24 Vac

supply, class 2 power supply transformer, connected to the LOAD

supply in the RTS. (Each output is limited to 1 amp) The PMM contac-

tor coil connections are made at the OPCB terminal strip.

Connect the PMM contactor coil to OPCB contactor terminals (1, 2,

3 or 4). The selection of contactor terminal used will depend on the

priority of the load being controlled. This is a 24 Vac circuit and wiring

methods for class 2 should be used. Use ¼” quick connect terminals

to make the contactor coil connections on the PMM. See Figure 2.3.

A grommet is provided to route Class 2 wiring through. The grommet

can be used in any knockout for NEMA 1 installations. The grommet

can only be used in the bottom knockouts for NEMA 3R installations.

Installation

5

Control of Air Conditioner Load

1. Route the thermostat cable (from the furnace/thermostat to the

outdoor air conditioner unit) to the transfer switch.

2. Connect the wire to the terminal strip terminals (Air 1) on the

OPCB as shown in Figure 2.2. These are normally closed con-

tacts which open upon load shed conditions. Route thermostat

wire away from High voltage wires.

3. If required, connect the second air conditioner to the terminal

strip terminals (Air 2).

Contact Ratings

Air 1 & 2 24 VAC, 5.0 Amps Max

NOTE:

These instructions are for a typical air conditioner installation.

Control of heat pump and 2-stage air conditioners will require

special connections or the use of Power Management Modules

to control the loads.

Control of a Separate Contactor

A separate contactor relay module can be purchased from the manu-

facturer. This model is supplied in a 24 Vac or 120 Vac coil version.

1. Mount the contactor module and connect the load to the main

contacts.

2. Connect the contactor coil to the desired OPCB (contactor 1, 2,

3 or 4) terminals on the terminal strip.

3. Connect additional Power Management Module contactors in a

similar fashion.

NOTE:

It will be necessary to determine the order of “shedding” the con-

nected loads and connect the loads to the OPCB in that order.

One is the highest priority and four is the lowest priority.

Y wire

0 Ground

194 +12V

23 Transfer

T1

NEUTRAL

A/C 1

24V

A/C 2

24V

LOAD 1

LOAD 2

LOAD 3

LOAD

4

A/C 1 & LOAD 1

PMM #1 Load #1

Supply

Coil wires

PMM #2 Load #2

Supply

PMM #4 Load #4

Supply

PMM #3 Load #3

Supply

LOAD

SUPPLY

LOAD

SUPPLY

1

2

1

2

1

1A MAX

A/C 2 & LOAD 2

LOAD 3

LOAD 4

Figure 2.2 — Overload Prevention Control

Installation

6

2.6 CONNECTION OF POWER SUPPLY FOR

CONTACTORS

The Overload Prevention Control Board (OPCB) can be powered from

either a 24 Vac or 120 Vac power supply. The 24 Vac supply is from

a class 2 transformer that can be purchased from the manufacturer.

Mounting holes are provided in the enclosure subplate for mounting of

the transformer. The 120 Vac supply is fused at 5 amps and is factory

connected to OPCB terminals labeled "T1 and "Neutral".

2.6.1 24 VAC SUPPLY

Transformer connection are made as shown in Figure 2.3

• Blue wire - OPCB "LOAD SUPPLY 1" terminal

• Black wire - OPCB "T1" terminal

• White wire - OPCB "NEUTRAL" terminal

• Yellow wire - OPCB "LOAD SUPPLY 2" terminal

2.6.2 120 VAC SUPPLY

Install the following jumpers on the OPCB module (Figure 2.4).

• Wire - Load Supply 1 to T1

• Wire - Load Supply 2 to T2



Load supply voltage on the OPCB terminals

must match the PMM contactor coil voltage, or

the equipment will be damaged.

Figure 2.4 — 120 Vac Supply Connections

3.1 FUNCTIONAL TESTS AND

ADJUSTMENTS

Following transfer switch installation and intercon-

nection, inspect the entire installation carefully. A

competent, qualified electrician should inspect it. The

installation should comply strictly with all applicable

codes, standards, and regulations. When absolutely

certain the installation is proper and correct, com-

plete a functional test of the system.



Perform functional tests in the exact order

presented in this manual, or damage could be

done to the switch.

IMPORTANT: Before proceeding with functional tests, read and

make sure all instructions and information in this section are under-

stood. Also read the information and instructions of labels and decals

affixed to the switch. Note any options or accessories that might be

installed and review their operation.

Operation

0 Ground

194 +12V

23 Transfer

T1

NEUTRAL

A/C 1

24V

A/C 2

24V

LOAD 1

LOAD 2

LOAD 3

LOAD

4

A/C 1 & LOAD 1

LOAD

SUPPLY

LOAD

SUPPLY

1

2

1

2

1

1A MAX

A/C 2 & LOAD 2

LOAD 3

LOAD 4

Blue

Black

White

Yellow

Factory

wiring

Transf orm er

leads

Field installed

Existing

wiring

Figure 2.3 — 24 Vac Supply Connections

7

3.2 MANUAL OPERATION



Do NOT manually transfer under load.

Disconnect transfer switch from all power

sources by approved means, such as a main

circuit breaker(s).

A manual HANDLE is shipped with the transfer switch. Manual opera-

tion must be checked BEFORE the transfer switch is operated electri-

cally. To check manual operation, proceed as follows:

1. Put the generator into the OFF mode.

2. Turn OFF both UTILITY and EMERGENCY power supplies to

the transfer switch, with whatever means provided (such as the

main line circuit breakers).

3. Note position of transfer mechanism main contacts by observing

the moveable contact carrier arm.

• Manual operation handle towards the top of switch mecha-

nism - LOAD terminals (T1, T2) are connected to UTILITY

terminals (N1, N2).

• Manual operation handle towards the bottom of switch

mechanism - LOAD terminals (T1, T2) are connected to

EMERGENCY terminals (E1, E2).



Do not use excessive force when operating the

transfer switch manually or damage could be

done to the manual handle.

3.2.1 CLOSE TO NORMAL SOURCE SIDE

Before proceeding, verify the position of the switch by observing the

position of manual operation handle in Figure 3.1. If the handle is UP,

the contacts are closed in the NORMAL position, no further action is

required. If the handle is DOWN, proceed with Step 1.

Step 1: With the handle inserted into the actuating shaft, move handle

UP. Be sure to hold on to the handle as it will move quickly

after the center of travel.

3.2.2 CLOSE TO EMERGENCY SOURCE SIDE

Before proceeding, verify the position of the switch by observing the

position of the manual operation handle in Figure 3.1. If the handle

is DOWN, the contacts are closed in the EMERGENCY (STANDBY)

position. No further action is required. If the handle is UP, proceed

with Step 1.

Step 1: With the handle inserted into the actuating shaft, move the

handle DOWN. Be sure to hold on to the handle as it will move

quickly after the center of travel.

3.2.3 RETURN TO NORMAL SOURCE SIDE

Manually actuate switch to return manual operating handle to the UP

position.

7

NOTE: Return handle to

storage position in enclosure

when finished with manual transfer.

Move handle

UP for the

NORMAL

(UTILITY)

position.

Move handle

DOWN for the

EMERGENCY

(STANDBY)

position.

Attach handle to actuating shaft.

Figure 3.1 — Actuating Transfer Switch

Operation

8

3.3 VOLTAGE CHECKS

1. Turn ON the UTILITY power supply to the transfer switch with

whatever means provided (such as the UTILITY main line circuit

breaker).



PROCEED WITH CAUTION. THE TRANSFER

SWITCH IS NOW ELECTRICALLY HOT.

CONTACT WITH LIVE TERMINALS RESULTS

IN EXTREMELY HAZARDOUS AND POSSIBLY

FATAL ELECTRICAL SHOCK.

2. With an accurate AC voltmeter, check for correct voltage.

Single-phase utility supply:

Measure across ATS terminal lugs N1 and N2. Also check N1 to

NEUTRAL and N2 to NEUTRAL.

3. When certain that UTILITY supply voltage is correct and compat-

ible with transfer switch ratings, turn OFF the UTILITY supply to

the transfer switch.

4. Set the generator to the MANUAL mode. The generator should

crank and start.

5. Let the generator stabilize and warm up at no-load for at least

five minutes.

6. Set the generator's main circuit breaker (CB1) to its ON or

CLOSED position.



PROCEED WITH CAUTION. GENERATOR

OUTPUT VOLTAGE IS NOW BEING DELIVERED

TO TRANSFER SWITCH TERMINALS.

CONTACT WITH LIVE TERMINALS RESULTS

IN EXTREMELY DANGEROUS AND POSSIBLY

FATAL ELECTRICAL SHOCK.

7. With an accurate AC voltmeter and frequency meter, check the

no-load, voltage and frequency.

Single-phase generator supply:

Measure across ATS terminal lugs E1 to E2. Also check E1 to

NEUTRAL and E2 to NEUTRAL.

a. Frequency ................................................ 60-62 Hertz

b. Terminals E1 to E2 ................................... 240-246 VAC

c. Terminals E1 to NEUTRAL ........................ 120-123 VAC

d. Terminals E2 to NEUTRAL ........................ 120-123 VAC

8. Set the generator’s main circuit breaker (CB1) to its OFF or

OPEN position.

9. Set the generator to the OFF mode to shut down the generator.

NOTE:

Do NOT proceed until generator AC output voltage and frequen-

cy are correct and within stated limits. If the no-load voltage is

correct but no-load frequency is incorrect, the engine governed

speed probably requires adjustment. If no-load frequency is

correct but voltage is not, the voltage regulator may require

adjustment.

3.4 GENERATOR TESTS UNDER LOAD

1. Set the generator's main circuit breaker to its OFF or OPEN posi-

tion.

2. Set the UTILITY SERVICE DISCONNECT circuit breaker to the

OFF or OPEN position.

3. Manually actuate the transfer switch main contacts to their

EMERGENCY (STANDBY) position. Refer to the "Manual

Operation" section.

4. To start the generator, put it into the MANUAL mode. When

engine starts, let it stabilize for a few minutes.

5. Turn the generator's main circuit breaker to its ON or CLOSED

position. The generator now powers all LOAD circuits. Check

generator operation under load as follows:

• Turn ON electrical loads to the full rated wattage/amperage

capacity of the generator. DO NOT OVERLOAD.

• With maximum rated load applied, check voltage and fre-

quency across transfer switch terminals E1 and E2. Voltage

should be greater than 230 volts and frequency should be

greater than 59 Hertz. Also, verify that the gas pressure

remains within acceptable parameters (see the generator

Installation Guidelines manual).

• Let the generator run under rated load for at least 30 min-

utes. With unit running, listen for unusual noises, vibration,

overheating, etc., that might indicate a problem.

6. When checkout under load is complete, set main circuit breaker

of the generator to its OFF or OPEN position.

7. Let the generator run at no-load for several minutes. Then shut

down by putting it into the OFF mode.

3.5 CHECKING AUTOMATIC OPERATION

To check the system for proper automatic operation, proceed as fol-

lows:

1. Ensure that the generator is in it’s OFF mode.

2. Install front cover of the transfer switch.

3. Turn ON the utility power supply to the transfer switch, using the

means provided (such as a utility main line circuit breaker).

NOTE:

Transfer Switch will transfer back to utility position.

4. Set the generator’s main circuit breaker to its ON (or CLOSED)

position.

5. Push the generator’s AUTO mode button. The system is now

ready for automatic operation.

6. Turn OFF the utility power supply to the transfer switch.

With the generator ready for automatic operation, the engine should

crank and start when the utility source power is turned OFF after a

10 second delay (factory default setting). After starting, the transfer

switch should connect load circuits to the standby side after a five

(5) second delay. Let the system operate through its entire automatic

sequence of operation.

Operation

9

Operation

With the generator running and loads powered by generator AC

output, turn ON the utility power supply to the transfer switch. The

following should occur:

• After approximately 15 seconds, the switch should transfer loads

back to the 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.

3.6 TESTING OVERLOAD PREVENTION

CONTROL BOARD (OPCB)

A Test pushbutton is provided on the bottom of the OPCB to test the

operation of the load shed functions. The Test button will work when

the ATS is in the Utility or the Generator position.

1. Turn the Utility supply on to the ATS.

2. Press the TEST pushbutton on the OPCB.

3. Verify that all of the connected loads to be “shed” become dis-

abled. The method of verification will depend on the type of load.

4. After five (5) minutes verify AC 1 and Load 1 are energized

Status LED AC 1 and Load 1 is ON.

5. After another 15 seconds, verify AC 2 and Load 2 are energized

Status LED AC 2 and Load 2 are ON.

6. After another 15 seconds, verify Load 3 is energized Status Load

3 is ON.

7. After another 15 seconds, verify Load 4 is energized Status Load

4 is ON.

3.7 INSTALLATION SUMMARY

1. Ensure that the installation has been properly performed as

outlined by the manufacturer and that it meets all applicable laws

and codes.

2. Test and confirm proper operation of the system as outlined in

the appropriate installation and owner’s manuals.

3. Educate the end-user on the proper operation, maintenance and

service call procedures.

Important! If the end user ever finds it necessary to turn the gen-

erator off during prolonged utility outages to conserve on fuel,

educate them on these simple, but important steps:

To turn the generator OFF (while running in AUTO and online):

1. Turn OFF (or OPEN) the main Utility disconnect.

2. Turn OFF (or OPEN) the Main Line Circuit Breaker (MLCB) on

the generator.

3. Turn the generator OFF.

To turn the generator back ON:

1. Put the generator back into AUTO and allow to start and warm-up

for a few minutes.

2. Turn ON (or CLOSE) the MLCB on the generator.

The system will now be operating in its automatic mode. The main

utility disconnect can be turned ON (or CLOSED), but to shut the unit

off, this complete process must be repeated.

10

0 GROUND

15B +12V

23 TRANSFER

AIR 1

AIR 2

PRIORITY 1

PRIORITY 2

PRIORITY 3

PRIORITY 4

T1

NEUTRAL

CONTACTOR

1

CONTACTOR

2

CONTACTOR

3

CONTACTOR

4

SERVICE DISCONNECT

UTILITY SUPPLY FROM

TO GROUNDING

ELECTRODE

PANELBOARD

DISCONNECT

CONNECTION

IN PANELBOARD

BONDING

NOTE: INSTALLATION MUST MEET

ALL NATIONAL, STATE AND

LOCAL ELECTRICAL CODES.

2010 AIR-COOLED HSB GENERATOR

NEUTRAL BAR

GROUND BAR

LOAD SHED

DEVICE

(C2 & VR2)

(C1 & VR1)

STANDBY

UTILITY

N1 N2

E2E1

T1 T2

N2N1

T1

E1

E2

T2

N1

N2

GROUND

NEUTRAL BLOCK

T1

0

194

23

GROUND LUG

(LOCATED ON THE

REAR OF UNIT)

E2

E1

GENERATOR OUTPUT

CIRCUIT BREAKER

2 POLE

T1

N2

N1

209

210

0

194

23

NEUT

GND

OPTIONAL

(ALARM CONTACT)

CUSTOMER SUPPLIED

WHT

GRN

BREAKER

TO SUPPLY

GFCI OUTLET

(IF FITTED)

RTSR TRANSFER SWITCH - 2013 MODEL

Electrical Data Interconnection Drawing No. 0K2427-C

11

0 GROUND

15B +12V

23 TRANSFER

AIR 1

AIR 2

PRIORITY 1

PRIORITY 2

PRIORITY 3

PRIORITY 4

T1

NEUTRAL

CONTACTOR

1

CONTACTOR

2

CONTACTOR

3

CONTACTOR

4

2008 AIR-COOLED HSB GENERATORS

UTILITY SUPPLY FROM

SERVICE DISCONNECT

TO GROUNDING

ELECTRODE

PANELBOARD

NEUTRAL BAR

GROUND BAR

DISCONNECT

CONNECTION

IN PANELBOARD

BONDING

UTILITY

STANDBY

(C1 & VR1)

(C2 & VR2)

LOAD SHED

DEVICE

NEUTRAL BLOCK

GROUND

GROUND LUG

(LOCATED ON THE

REAR OF UNIT)

NOTE:INSTALLATION MUST MEET

ALL NATIONAL,STATE AND

LOCAL ELECTRICAL CODES.

T1N1 N2

T1

E1

E2

T2

T1

E1

N1

T2

E2

N2

N1

N2

0

WHITE

N1

N2

GREEN

23

15B

T1

E1

E2

0

15B

23

RTSR TRANSFER SWITCH - 2013 MODEL

Interconnection Drawing No. 0K2428-C Electrical Data

12

SERVICE DISCONNECT

UTILITY SUPPLY FROM

CUSTOMER LOAD

(DISTRIBUTION PANEL)

QT SERIES ENGINE GENERATOR

CONNECTION PANEL

NEUTRAL BLOCK

LIQUID COOLED INSTALLATION

GROUND

0 GROUND

15B +12V

23 TRANSFER

AIR 1

AIR 2

PRIORITY 1

PRIORITY 2

PRIORITY 3

PRIORITY 4

T1

NEUTRAL

CONTACTOR

1

CONTACTOR

2

CONTACTOR

3

CONTACTOR

4

(C2 & VR2)

(C1 & VR1)

STANDBY

UTILITY

RTSR TRANSFER SWITCH - 2013 MODEL

N1 N2

E2E1

T1 T2

N2N1

T1

E1

E2

T2

N1

N2

GROUND

NEUTRAL BLOCK

LOAD SHED

DEVICE

194

23

0

N1

N2

E1 E2

NOTE:

MATCH WIRE

TERMINAL NUMBERS

NUMBERS TO

T1

ON

N1

N2

T1/LINE

NEU

178

183

23

194

T1

CUSTOMER SUPPLIED

NEUTRAL WIRE

NEUT

NOTE: INSTALLATION MUST MEET

ALL NATIONAL, STATE AND

LOCAL ELECTRICAL CODES.

0

194

23

Electrical Data Interconnection Drawing No. 0K2426-B

Generac

®

Power Systems, Inc. 13 13

Installation Drawing No. 0G6832-A Installation Diagrams

14

GENERATOR OUTPUT

CIRCUIT BREAKER

2 POLE

E1

E2

GFCI

BREAKER

GROUNDING ELECTRODE

CONNECTION

(LOCATED ON THE

REAR OF UNIT)

NOTE: INSTALLATION MUST MEET ALL

NATIONAL, STATE AND LOCAL

ELECTRICAL CODES.

WHITE

GREEN

E1

E2

TOP

VIEW

SIDE VIEW

N1

T1

N2

194

23

TO GROUNDING

ELECTRODE

RTSR TRANSFER SWITCH - 2013 MODEL

0 GROUND

15B +12V

23 TRANSFER

AIR 1

AIR 2

PRIORITY 1

PRIORITY 2

PRIORITY 3

PRIORITY 4

T1

NEUTRAL

CONTACTOR

1

CONTACTOR

2

CONTACTOR

3

CONTACTOR

4

(C2 & VR2)

(C1 & VR1)

STANDBY

UTILITY

N1 N2

E2E1

T1 T2

N2N1

T1

E1

E2

T2

N1

N2

GROUND

NEUTRAL BLOCK

T1

0

194

23

0

CUSTOMER LOAD

(DISTRIBUTION PANEL)

UTILITY SUPPLY FROM

LOAD SHED

DEVICE

N1

T1

N2

194

23

0

EVOLUTION

PANEL

SERVICE DISCONNECTSERVICE DISCONNECT

Installation Diagrams Installation Drawing No. 0K2516-B

15

GENERATOR OUTPUT

CIRCUIT BREAKER

2 POLE

GFCI

BREAKER

E2

E1

SIDE VIEW

SOCKET

UTILITY

METER

A BONDING JUMPER IS

PROVIDED BETWEEN

THE NEUTRAL LUG

AND ENCLOSURE

AT THIS LOCATION

(FACTORY INSTALLED)

GROUND CONNECTION

LOAD SHED

DEVICE

RTSY TRANSFER SWTICH - 2013 MODEL

TO GROUNDING

ELECTRODE

PANELBOARD

NEUTRAL BAR

GROUND BAR

DISCONNECT

CONNECTION

IN PANELBOARD

BONDING

N2

N1

T2

(C2 & VR2)

STANDBY

23

194

0

0D9618-TO

E1 T1

(C1 & VR1)

UTILITY

E2

N2N1

T1

C

GROUNDING ELECTRODE

CONNECTION

(LOCATED ON THE

REAR OF UNIT)

WHITE

GREEN

E1

E2

TOP

VIEW

N1

T1

N2

194

23

0

N1

T1

N2

194

23

0

EVOLUTION

PANEL

NOTE: INSTALLATION MUST MEET ALL

NATIONAL, STATE AND LOCAL

ELECTRICAL CODES.

Installation Drawing No. 0K2516-B Installation Diagrams

16

Notes

17

Notes

Part No. 0K0170 Revision B (08/01/13) Printed in U.S.A.

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