Howard Voltage Regulators User Manual download pdf

Copyright © 2011 Howard Industries, Inc.

1

Document No. 2.4.132

Revision: 0

Issued: October, 2011

Howard Industries, Inc.

Laurel, MS 39440

www.howardtransformers.com

INTRODUCTION

Howard Industries’ SVR-1 single-phase

step voltage regulators are tap-changing

autotransformers designed to automati-

cally regulate distribution line voltages in

a range of plus or minus 10% in thirty-two

steps of approximately 5/8% each. The

following ratings are available:

• Voltage: 2500 Volts (60 kV BIL)

through 19920 Volts (150 kV BIL)

• Current: 50 through 1665 Amps

• KVA: 38.1 through 1000

• Frequency: 50 or 60 Hertz

Internal potential winding taps and/or

an external ratio correction transformer

are provided on all ratings so that each

regulator may be applied within a range

of system voltages.

A digital control system automatically

operates the tap changer mechanism to

maintain system voltage within desired

limits. The control system is externally

programmable to allow precise setting of

control limits and provides sophisticated

capabilities for special control require-

ments, communication, and data logging.

Overhead type voltage regulators are

supplied with support brackets for pole

mounting and have bolt-down provisions

for pad-mounted applications. Substation

type voltage regulators are provided with

rectangular substation bases. Elevating

platforms are available as an option.

SVR-1 voltage regulators are designed for

reliable operation and ease of mainte-

nance and are supplied with a full array of

standard features for routine applications.

Optional accessories are available to ac-

commodate special applications.

Voltage Regulators

28-10

Catalog Section

Howard Industries, Inc.

ISO-9001 Certied

Single-Phase Step

Distribution Transformer Division

FIGURE 1: SVR-1 single-phase voltage regulator

1 2 3 4 5 6 7 8

Summary of Contents

Page 1

Copyright © 2011 Howard Industries, Inc.1Document No. 2.4.132Revision: 0Issued: October, 2011Howard Industries, Inc.Laurel, MS 39440www.howardtransfor

Page 2 - HI/ICMI UVR-1 CONTROL

SVR-1 Single-Phase Step Voltage Regulators28-10Copyright © 2011 Howard Industries, Inc.2Document No. 2.4.132Revision: 0Issued: October, 2011Howard Ind

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Copyright © 2011 Howard Industries, Inc.3Document No. 2.4.132Revision: 0Issued: October, 2011Howard Industries, Inc.Laurel, MS 39440www.howardtransfor

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SVR-1 Single-Phase Step Voltage Regulators28-10Copyright © 2011 Howard Industries, Inc.4Document No. 2.4.132Revision: 0Issued: October, 2011Howard Ind

Page 5 - SURGE ARRESTERS

SVR-1 Single-Phase Step Voltage Regulators28-10Copyright © 2011 Howard Industries, Inc.5Document No. 2.4.132Revision: 0Issued: October, 2011Howard Ind

Page 6 - Table 1:

SVR-1 Single-Phase Step Voltage Regulators28-10Copyright © 2011 Howard Industries, Inc.6Document No. 2.4.132Revision: 0Issued: October, 2011Howard Ind

Page 7 - Table 2:

SVR-1 Single-Phase Step Voltage Regulators28-10Copyright © 2011 Howard Industries, Inc.7Document No. 2.4.132Revision: 0Issued: October, 2011Howard Ind

Page 8

SVR-1 Single-Phase Step Voltage RegulatorsCatalog Section 28-10Document 2.4.132, Revision 0, October, 2011Copyright © 2011 Howard Industries, Inc.Laur

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