Basler Electric MVC236 User Manual

INSTRUCTION MANUAL

FOR

MVC 236

Manual Voltage Control

Publication: 9204300990
Revision: J 09/13

9204300990 Rev J i

Preface

This instruction manual provides information about the installation and operation of the MVC 236 Manual
Voltage Control. To accomplish this, the following information is provided:

 Functional description
 Mounting
 Connections
 Operation
 Maintenance

Conventions Used in this Manual

Important safety and procedural information is emphasized and presented in this manual through
Warning, Caution, and Note boxes. Each type is illustrated and defined as follows.

Warning!

Warning boxes call attention to conditions or actions that may cause
personal injury or death.

Caution

Caution boxes call attention to operating conditions that may lead to
equipment or property damage.

Note

Note boxes emphasize important information pertaining to Manual
Voltage Control installation or operation.

Manual Voltage Control Preface

ii 9204300990 Rev J

12570 State Route 143

Highland IL 62249-1074 USA

www.basler.com

[e-mail]

Tel: [phone]

Fax: [phone]

© 2013 by Basler Electric

All rights reserved

First printing: August 1988

Warning!

READ THIS MANUAL. Read this manual before installing, operating, or maintaining the MVC 236.

Note all warnings, cautions, and notes in this manual as well as on the product. Keep this manual with
the product for reference. Failure to follow warning and cautionary labels may result in personal injury
or property damage. Exercise caution at all times.

To prevent personal injury or equipment damage, only qualified personnel should install, operate, or
service this system.

Basler Electric does not assume any responsibility to compliance or noncompliance with national code, local code,
or any other applicable code. This manual serves as reference material that must be well understood prior to
installation, operation, or maintenance.

For terms of service relating to this product and software, see the Commercial Terms of Products and Services
document available at www.basler.com/terms.

This publication contains confidential information of Basler Electric Company, an Illinois corporation. It is loaned for
confidential use, subject to return on request, and with the mutual understanding that it will not be used in any
manner detrimental to the interests of Basler Electric Company and used strictly for the purpose intended.

It is not the intention of this manual to cover all details and variations in equipment, nor does this manual provide
data for every possible contingency regarding installation or operation. The availability and design of all features
and options are subject to modification without notice. Over time, improvements and revisions may be made to this
publication. Before performing any of the following procedures, contact Basler Electric for the latest revision of this
manual.

The English-language version of this manual serves as the only approved manual version.

Preface Manual Voltage Control

9204300990 Rev J iii

Contents

Introduction ................................................................................................................................................... 1

Functional Description ................................................................................................................................... 3

Buildup Circuit ........................................................................................................................................... 3

Auto/Manual Transfer ................................................................................................................................ 3

Output Power ............................................................................................................................................. 3

Spike Suppression ..................................................................................................................................... 3

Mounting ........................................................................................................................................................ 5

Spike Suppression Module ........................................................................................................................ 6

Connections .................................................................................................................................................. 7

Operation..................................................................................................................................................... 11

Operational Test ...................................................................................................................................... 11

Maintenance ................................................................................................................................................ 13

Troubleshooting ....................................................................................................................................... 13

Specifications .............................................................................................................................................. 15

Manual Voltage Control Contents

iv 9204300990 Rev J

Contents Manual Voltage Control

9204300990 Rev J 1

Introduction

Manual Voltage Control MVC 236 enables manual control of generator output and is intended as a
backup system for an associated automatic voltage regulator. During generator startup, an integrated
buildup circuit maintains maximum MVC 236 output power for reliable buildup of the generator output
voltage.

The MVC 236 is intended for behind-the-panel mounting. MVC 236 components are mounted on a 14­gauge, steel chassis with an aluminum cover and heat sinks. MVC 236 modules with part number
9204300100 have a chassis constructed from low-carbon steel while MVC 236 modules with part number
9204300104 have a chassis constructed from 316-grade stainless steel.

Standard Equipment

The MVC 236 is supplied with a potentiometer and spike suppression module.

Potentiometer

The potentiometer is intended for remote mounting and controls the MVC 236 setpoint.

Spike Suppression Module

The spike suppression module protects the MVC 236 from potentially damaging voltage spikes when the
MVC 236 is powered by a high-impedance source.

Optional Equipment

Available optional equipment for the MVC 236 includes an Auto/Off/Manual control switch and a nulling
chassis.

Auto/Off/Manual Switch

An available Auto/Off/Manual switch (P/N 9204306100) enables transfer of control between the MVC 236
and automatic voltage regulator.

Nulling Chassis

An available nulling chassis (P/N 9204304100) provides “bumpless” transfers from the automatic voltage
regulator to the MVC 236.

MVC 236 Introduction

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Introduction MVC 236