Generac Power Systems RTG24SHA1 Owner'S Manual Download Page 19

Operation

Automatic Transfer Switch Owner’s Manual

15

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 minutes. With unit running, listen for
unusual noises, vibration, overheating, etc.,
that might indicate a problem.

6.

When test under load is complete, set main circuit
breaker of the generator to the OFF or OPEN
position.

7.

Let the generator run at no-load for several
minutes. Then, shut down by selecting the OFF
mode.

8.

Move the main switch contacts back to the utility
position. 

NOTE: 

See 

Manual Operation

. Operating lever of

transfer switch should be in UP position.

9.

Install front cover of enclosure.

10.

Turn on the utility power supply to transfer switch,
using whatever means provided (such as a utility
main line circuit breaker). The utility power source
now powers the loads.

Checking Automatic Operation

To check the system for proper automatic operation,
proceed as follows:

1.

Verify generator is in OFF mode.

2.

Set the generator main circuit breaker to ON.

3.

On the generator panel, select AUTO. The system
is now ready for automatic operation.

4.

Turn utility power supply to the transfer switch OFF
with the Utility Breaker.

With the generator ready for automatic operation, and the
utility source power turned off, the engine should crank
and start after a ten second delay (factory default
setting). After starting, the transfer switch should connect
load circuits to the standby side after a five (5) second
warmup delay. Timer duration varies depending on
whether or not Cold Smart Start (if equipped) is enabled.
Let the system operate through its entire automatic
sequence of 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.

Installation Summary

1.

Verify the installation has been properly performed
as outlined by the manufacturer and that it meets
all applicable laws and codes.

2.

Verify 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. 

Shutting Generator Down While 

Under Load

IMPORTANT NOTE: 

To avoid equipment damage, follow

these steps, in order, when shutting the generator down
during utility outages. Shutdowns may be required during
outages to perform routine maintenance or to conserve fuel.

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

1.

Turn main utility disconnect off.

2.

Turn the generator MLCB (generator disconnect)
to OFF (open). 

3.

Run generator for approximately one minute to
allow proper cooling.

4.

Turn the generator OFF.

To turn the generator back ON:

1.

Place generator in AUTO mode. Start generator
and warm up for a few minutes.

2.

Set MLCB (generator disconnect) to ON (closed).

The system now operates in automatic mode. Main utility
disconnect can be turned ON (closed). To shut the unit
off, repeat the entire process.

Testing The Smart A/C Module

A Test pushbutton is provided on the bottom of the Smart
A/C Module 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 on the Utility supply to the ATS.

2.

Verify managed loads are powered and all LEDs
illuminate on Smart A/C Module.

3.

Press the TEST button on the Smart A/C Module.

4.

Verify that all of the connected loads to be “shed”
become disabled.

5.

After five (5) minutes verify A/C 1 is energized and
Status LED A/C 1 is ON.

6.

After another 15 seconds, verify A/C 2 is energized
and Status LED A/C 2 is ON.

7.

After another 15 seconds, verify Load A/C 3 is
energized and Status LED Load A/C 3 is ON.

8.

After another 15 seconds, verify A/C 4 is energized
and Status LED A/C 4 is ON.

Summary of Contents for RTG24SHA1

Page 1: ...1 100A RTG42SHA1 200A Register your Generac product at WWW GENERAC COM 888 436 3722 Para espa ol visita http www generac com service support product support lookup SAVE THIS MANUAL FOR FUTURE REFERENC...

Page 2: ...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 constitue...

Page 3: ...y Source Side 13 Close to Generator Source Side 14 Return to Utility Source Side 14 Voltage Checks 14 Utility Voltage Checks 14 Generator Voltage Checks 14 Generator Tests Under Load 14 Checking Autom...

Page 4: ...Table of Contents iv Automatic Transfer Switch Owner s Manual This page intentionally left blank...

Page 5: ...ible 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 techn...

Page 6: ...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 res...

Page 7: ...ch 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 Electrocuti...

Page 8: ...Introduction and Safety 4 Automatic Transfer Switch Owner s Manual This page intentionally left blank...

Page 9: ...standby electric system installations The transfer switch consists of a transfer mechanism utility service disconnect circuit breaker a control relay fuses terminal strip and fuse holder for connecti...

Page 10: ...Code UL 1008 STANDARD FOR SAFETY AUTOMATIC TRANSFER SWITCHES UL 67 Panelboards Marking and Application Guide NOTE It is essential to use the latest version of any standard to ensure correct and curre...

Page 11: ...termined by generator frequency Loads are shed when frequency is less than 58 Hz for three seconds or less than 50 Hz for one half second for 60 Hz systems The SACM can be used in conjunction with ind...

Page 12: ...General Information 8 Automatic Transfer Switch Owner s Manual This page intentionally left blank...

Page 13: ...onvenience and proximity to the utility supply and load center 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...

Page 14: ...NEC Article 210 4 Connecting Power Source and Generator Power Supply Installation and interconnection diagrams are provided in this manual NOTE All installations must comply with national state and l...

Page 15: ...wiring connection details Recommended wire gauge sizes for this wiring depends on the length of the wire as recommended in the following chart Exception Conductors of AC and DC circuits rated 1000 vol...

Page 16: ...is in utility mode The contacts will open when the transfer switch is in the standby power mode Figure 3 5 Auxiliary Contact NOTE Auxiliary Contact is rated 10 amps at 125 or 250 volts AC and 0 6 amp...

Page 17: ...sm main contacts by observing the movable contact carrier arm This can be viewed through the long narrow slot in the inside cover of the ATS The top of the movable contact carrier arm is yellow to be...

Page 18: ...nsfer switch ratings turn OFF the generator supply to the transfer switch 6 On the generator panel select the OFF mode to shut down the generator NOTE Do NOT proceed until generator AC output voltage...

Page 19: ...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 Installation S...

Page 20: ...Operation 16 Automatic Transfer Switch Owner s Manual Testing The Smart Management Module Refer to the SMM Owner s Installation Manual for testing that product...

Page 21: ...Drawings and Diagrams Automatic Transfer Switch Owner s Manual 17 Section 5 Drawings and Diagrams Installation Drawings Installation Drawing No 10000005900 100A 2 of 2...

Page 22: ...Drawings and Diagrams 18 Automatic Transfer Switch Owner s Manual Installation Drawing No 10000005900 200A 1 of 2...

Page 23: ...Transfer Switch Owner s Manual 19 Interconnection Drawings Interconnection Drawing 10000005901 Air Cooled 100A Generator page 1 of 2 INTERCONNECTION DRAWING AIR COOLED GENERATOR RTG24SHA1 DRAWING 1000...

Page 24: ...s 20 Automatic Transfer Switch Owner s Manual Interconnection Drawing 10000005901 Air Cooled 100A Generator page 2 of 2 INTERCONNECTION DRAWING AIR COOLED GENERATOR RTG24SHA1 DRAWING 10000005901 REVIS...

Page 25: ...s Automatic Transfer Switch Owner s Manual 21 Interconnection Drawing 10000005901 Air Cooled 200A Generator page 1 of 2 INTERCONNECTION DRAWING AIR COOLED GENERATOR RTG42SHA1 DRAWING 10000005901 REVIS...

Page 26: ...ms 22 Automatic Transfer Switch Owner s Manual Interconnection Drawing 10000005901 Air Cooled 200A Generator page 2 of 2 INTERCONNECTION DRAWING AIR COOLED GENERATOR RTG42SHA1 DRAWING 10000005901 REVI...

Page 27: ...utomatic Transfer Switch Owner s Manual 23 Interconnection Drawing 10000005855 Liquid Cooled 100A Generator page 1 of 2 INTERCONNECTION DRAWING LIQUID COOLED GENERATOR RTG24SHA1 DRAWING 10000005855 RE...

Page 28: ...4 Automatic Transfer Switch Owner s Manual Interconnection Drawing 10000005855 Liquid Cooled 100A Generator page 2 of 2 INTERCONNECTION DRAWING LIQUID COOLED GENERATOR RTG24SHA1 DRAWING 10000005855 RE...

Page 29: ...utomatic Transfer Switch Owner s Manual 25 Interconnection Drawing 10000005855 Liquid Cooled 200A Generator page 1 of 2 INTERCONNECTION DRAWING LIQUID COOLED GENERATOR RTG42SHA1 DRAWING 10000005855 RE...

Page 30: ...6 Automatic Transfer Switch Owner s Manual Interconnection Drawing 10000005855 Liquid Cooled 200A Generator page 2 of 2 INTERCONNECTION DRAWING LIQUID COOLED GENERATOR RTG42SHA1 DRAWING 10000005855 RE...

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Page 32: ...rights reserved Specifications are subject to change without notice No reproduction allowed in any form without prior written consent from Generac Power Systems Inc Generac Power Systems Inc S45 W2929...

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