LEROY-SOMER
3
2010.11 / f
Installation and maintenance
R438
A.V.R.
3971 en -
CONTENTS
1 - SUPPLY ..............................................................................................................................4
1.1 - AREP excitation system ...............................................................................................4
1.2 - PMG excitation system .................................................................................................5
1.3 - SHUNT or separate excitation system ..........................................................................5
2 - R438 A.V.R. ........................................................................................................................6
2.1 - Characteristics .............................................................................................................6
2.2 - Frequency compared with voltage (without LAM) .........................................................6
2.3 - LAM (Load Acceptance Module) characteristics...........................................................6
2.4 - Typical effects of the LAM with a diesel engine with or without a LAM (U/F only) ..........7
2.5 - R438 A.V.R. options .....................................................................................................7
3 - INSTALLATION - COMMISSIONING .................................................................................8
3.1 - Electrical checks on the AVR ........................................................................................8
3.2 - Settings ........................................................................................................................8
3.3 - Electrical faults ........................................................................................................... 11
4 - SPARE PARTS .................................................................................................................12
4.1 - Designation ................................................................................................................12
4.2 - Technical support service ...........................................................................................12
All such operations performed on the A.V.R. should be undertaken by personnel trained
in the commissioning, servicing and maintenance of electrical and mechanical
components.
The R438 is an IP00 product. It must be installed inside a unit so that this unit’s cover can
provide IP20 minimum total protection (it must only be installed on LS alternators in the ap-
propriate location so that when viewed externally, it has a higher degree of protection than
IP20).
Copyright 2005 : MOTEURS LEROY-SOMER
This document is the property of :
MOTEURS LEROY-SOMER
It may not be reproduced in any form without prior authorization.
All brands and models have been registered and patents applied for.
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