WEG GRT7-TH4E User manual

Motors | Automation | Energy | Transmission & Distribution | Coatings
Automatic Voltage Regulator
Regulador Automático de Tensión
Regulador Automático de Tensão
GRT7-TH4E
GRT7-TH4PE
Installation, Operation and Maintenance Manual
Manual de Instalación, Operación y Mantenimiento
Manual de Instalação, Operação e Manutenção

Installation, Operation and Maintenance Manual
Manual de Instalación, Operación y Mantenimiento
Manual de Instalação, Operação e Manutenção
Document # / Nº do documento: MGML07-00136
Models / Modelos: GRT7-TH4E, GRT7-TH4PE
Language / Idioma: English / Español / Português
Revision / Revisión / Revisão: 08
December / Diciembre / Dezembro, 2022

GENERAL INDEX / ÍNDICE GENERAL / ÍNDICE GERAL
Installation, Operation and Maintenance Manual
Pages 7 - 18
Manual de Instalación, Operación y Mantenimiento
Páginas 19 - 29
Manual de Instalação, Operação e Manutenção
Páginas 30 - 41
Português Español English
Apendix A / Apéndice A / Apêndice A
Pages / Páginas 42 - 48

www.weg.net
Automatic Voltage Regulator –GRT7-TH4E / GRT7-TH4PE l 7
FOREWORD
This manual may in no way be reproduced, filed, or transmitted through any type of media, whether
it be electronically, by printing, phonographically or any other audiovisual means without prior
consent from WEG. Infringement is subject to prosecution under the law.
Due to the continuous improvement of WEG products, the present manual may be modified and/or
updated without prior notice which may result in new revisions of the installation and maintenance
manuals for the same product.
WEG reserves itself the right not to update automatically the information included in this manual.
However, customers may at any time request any updated version of the manual, which will be
supplied to them free of charge.
If requested, WEG can supply an extra copy of this manual. The equipment serial number and model
should be informed by the customer, when making the request.
ATTENTION
1. It is necessary to follow the procedures contained in this manual for the warranty to be valid.
2. Qualified personnel must execute the alternator installation, operation, and maintenance.
NOTES
1. The total or partial reproduction of the information supplied in this manual is authorized, if reference is
made to its source;
2. If this manual is lost, an electronic PDF file is available from our website www.weg.net or another
printed copy can be requested.

www.weg.net
Automatic Voltage Regulator –GRT7-TH4E / GRT7-TH4PE l 9
INDEX
1SAFETY INFORMATION ............................................................................................11
2STORAGE INFORMATION.........................................................................................11
3INTRODUCTION .........................................................................................................11
4TECHNICAL CHARACTERISTICS.............................................................................12
5REGULATOR NAMEPLATE.......................................................................................12
6BLOCK DIAGRAM......................................................................................................13
7TRIMPOTS FUNCTION...............................................................................................13
8TRIMPOTS ADJUSTMENT.........................................................................................13
9OPERATION ...............................................................................................................14
9.1 VOLTAGE REGULATOR..................................................................................................................14
9.2 POWER CIRCUIT CONNECTION ....................................................................................................14
9.3 FIELD FLASHING .............................................................................................................................14
9.4 U/F OPERATION ..............................................................................................................................14
9.5 PARALLEL OPERATION FOR TWO OR MORE ALTERNATORS...................................................15
10 CONNECTION DIAGRAMS ........................................................................................16
11 DIMENSIONAL DRAWINGS.......................................................................................16
12 IDENTIFICATION OF CONNECTION TERMINALS ...................................................17
13 DIAGRAM FOR TEST WITHOUT ALTERNATOR......................................................17
14 PROBLEMS, CAUSES AND CORRECTIVE ACTIONS .............................................18
15 PREVENTIVE MAINTENANCE...................................................................................18
16 WARRANTY................................................................................................................18