Howard Network Transformers User Manual

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Catalog Section 94-10
Network Transformers
Issued: April 9, 2010
Howard Industries, Inc.
Laurel, MS 39440
www.howardtransformers.com
Copyright © 2010 Howard Industries, Inc.
1
Howard network transformers are designed and built
according to the most exacting engineering standards to
provide many years of outstanding performance and reli-
ability in the most demanding utility network applications.
Product scope includes capacities from 300 kVA through
2,500 kVA with high-voltage ratings from 2.4 kV through
34.5 kV and low-voltage ratings through 600 Volts.
Network transformers are typically used to supply
power to grid-type secondary distribution systems in
areas of high load density, such as are found in large
cities and are designed for either vault-type or subway-
type applications. Vault-type network transformers are
designed for installation in above-ground dry vaults, where
occasional submersion may occur. Subway-type network
transformers are designed for installation in subsurface
vaults, where frequent or continuous submerged
operation is likely. Subway designs may also be used in
vault-type applications.
Network Transformers
94-10
Catolog Section
Howard Industries, Inc.
ISO-9001 Certi ed
Figure 1: Network Transformer
Introduction
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Summary of Contents

Page 1 - Introduction

Catalog Section 94-10Network TransformersIssued: April 9, 2010Howard Industries, Inc.Laurel, MS 39440www.howardtransformers.comCopyright © 2010 Howard

Page 2 - Design and Manufacturing

Copyright © 2010 Howard Industries, Inc.2Howard Industries, Inc.Laurel, MS 39440www.howardtransformers.comNetwork Transformer94-10Catalog Section 94-1

Page 3 - Network Protector Provisions

Catalog Section 94-10Network TransformersIssued: April 9, 2010Howard Industries, Inc.Laurel, MS 39440www.howardtransformers.comCopyright © 2010 Howard

Page 4 - Quality Assurance

Copyright © 2010 Howard Industries, Inc.4Factory TestingIn addition to numerous quality inspections throughout the manufacturing process,  nal tests

Page 5 - Features and Accessories

Catalog Section 94-10Network TransformersIssued: April 9, 2010Howard Industries, Inc.Laurel, MS 39440www.howardtransformers.comCopyright © 2010 Howard

Page 6

Optional Features and AccessoriesThe following optional features and accessories are avail-able. Check with the factory for the availability of other

Page 7 - Replacement Parts

Warranty Service and MaintenanceWarranty ServiceShould product defects be discovered during the warranty period, immediately contact the factory or yo

Page 8

Network TransformersCatalog Section 94-10Document 2.4.85, Revision 0, April 9, 2010Copyright © 2010 Howard Industries, Inc.Laurel, MississippiTelephon

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