OnLine Power Iso-Care User Manual

Technical
Publication

NRT & ISO-CARE

Document No. 6002-033
Revision "C"

Installation, Operation, and Service Documentation

OnLine Power

Congratulations on selecting one of the fine products from OnLine Power, the Leader in Power Protection
Technology. Our wide product offering includes Uninterruptible Power Systems (UPS), Power Conditioners,
Automatic Voltage Regulators and Specialty Transformers (e.g. computer-grade, medical-grade). Since our
beginnings in 1975, OnLine Power has shipped thousands of these fine products around the world, to discerning
customers, for use on sensitive equipment and critical applications. Our customers, both new and long-time,
continue to enjoy security and peace of mind as they realize what it means to ”Stay On Line with OnLine Power”.

One of our goals is to make these manuals both comprehensive and easy to use. This new-format User’s Manual
is the result of ideas and inputs from customers who have taken an active interest in our continued success. We
invite constructive feedback on our products and documentation via fax, mail or telephone.

HEADQUARTERS FACTORY

OnLine Power, Inc OnLine Power, Inc.
5701 Smithway Street 5940 Triumph Street
Commerce, CA 90040 Commerce, CA 90040

SALES

Phone [phone]
Inside CA [phone]
FAX No. [phone]

CUSTOMER SUPPORT

Phone [phone]
(PWR-SRVC)
FAX No. [phone]

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OnLine Power

OnLine Power, Inc.

Proprietary Reproduction or Distribution forbidden

NOTICE: THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION

This document contains proprietary and confidential information of OnLine
Power, Inc. (”OnLine Power”). In consideration of the receipt of this document,
the recipient agrees not to copy any of its contents, nor disclose them to or allow
them to be used by any person not currently a OnLine Power employee or an
employee of the recipient having a need to know, without the express written
consent of OnLine Power, and further agrees to surrender this document to
OnLine Power when the reason for its receipt has terminated.

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OnLine Power

SAFETY

Safety precautions are important when operating or servicing electrical equipment. The following symbols are
used extensively throughout this manual. Always heed these precautions since they are essential to the safe
operation and servicing of this product.

DANGER!!

THIS DANGER SYMBOL IDENTIFIES A CONDITION OR ACTION WHICH WILL RESULT
IN SEVER INJURY OR DEATH TO AN INDIVIDUAL OR SEVER DAMAGE TO EQUIPMENT
OR OTHER PROPERTY.

CAUTION

This Caution symbol identifies a condition or action which may result in minor injury to an
individual or minor damage to the equipment or other property.

This unit was designed for specific applications. It should not be modified and/or used for any application other
than for that which it was designed. Optional equipment not described in the sales literature or this manual should
not be installed without first checking with the Service department. If you have any questions about this unit’s
application call the Service department at the number shown on the previous page.

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OnLine Power

TABLE OF CONTENTS

SECTION
SECTION 1 - INTRODUCTION 1-1

SECTION 2 - PREINSTALLATION 2-1

SECTION 3 - INSTALLATION 3-1

SECTION 4 - OPERATION 4-1
SECTION 5 - MAINTENANCE 5-1

APPENDIX A - SPECIFICATIONS A-1

PAGE

1-1 FEATURES 1-2

2-1 LOCATION CONSIDERATIONS 2-1
2-2 UNPACKING 2-1
2-3 INSPECTION 2-2
2-4 HANDLING SUGGESTIONS 2-2

3-1 INPUT AND OUTPUT POWER CIRCUITS 3-1

3-1-1 Input Power Cable Installation 3-2
3-1-2 Output Power Cable Installation 3-5

5-1 PERIODIC MAINTENANCE 5-1

LIST OF ILLUSTRATIONS

ILLUSTRATION

1-1 ISO-CARE & NRT 1-1
1-2 ISO-CARE FEATURES 1-2
1-3 NRT FEATURES 1-3
1-4 ISO-CARE FUNCTIONAL BLOCK DIAGRAM 1-4
1-5 NRT FUNCTIONAL BLOCK DIAGRAM 1-4

2-1 ISO-CARE DIMENSIONS 2-3
2-2 NRT DIMENSIONS 2-4

3-1 ISO-CARE INPUT AND OUTPUT TERMINAL CONNECTION (15-125 KVA) 3-3
3-2 ISO-CARE INPUT AND OUTPUT TERMINAL CONNECTION (150-500 KVA) 3-3
3-3 NRT INPUT AND OUTPUT TERMINAL CONNECTION (15-125 KVA) 3-4

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d

OnLine Power

SECTION 1 - INTRODUCTION

The Iso-Care and NRT (Noise Reduction Transformer) are three-phase, delta to wye isolation transformers designed for
isolation with optional distribution of AC power.

The Iso-Care and NRT can accommodate input voltages 208 or 480 VAC +5% and -10%, and output voltages 208Y/120 or
480Y/277. The input frequency range of the Iso-Care is 50 to 60 Hz. The NRT is designed for 60 Hz only.

The model number along with the input and output voltages are provided on the label plate located on the front of the unit.
All components used are of the highest quality and specifically selected to achieve the highest level of performance. The Iso-

Care and NRT transformers are UL listed and the units are certified by UL Laboratory Inc. in accordance with IEC Pub 601-

1. The Iso-Care and NRT conforms to National Electric Code (NEC) and Occupatio nal Safe ty and Health Act (OSHA)
standards.

The purpose of this manual is to familiarize the user with the features of the Iso-Care and NRT and to provide installation,
operation and maintenance information.

The Iso-Care and NRT are shown in Illustration 1-1.

ISO-CARE AND NRT

ILLUSTRATION 1-1

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OnLine Power

1-1 ISO-CARE FEATURES

The Iso-Care provides the following features:

• Ground lug

• Seismic mounting holes

• Transformer tap connections accessible from front of unit

• NEMA indoor cabinet

• Three phase, single-shielded, computer grade, isolation transformer

See Illustration 1-2 for the location of features described in this section.

TRANSFORMER
CORE

SINGLE POINT

GROUND

(Customer furnished)

OUTPUT POWER
TERMINAL BLOCKS

INPUT POWER
TERMINAL BLOCKS

X0

X1

X2

X3

H1

H2

H3

SINGLE SHIELDED
ISOLATION
TRANSFORMER

ISO-CARE FEATURES (15-125 KVA)

ILLUSTRATION 1-2

INPUT & OUTPUT
CONDUIT LOCATION
(2 SIDES)

9/16" Dia.
SEISMIC MOUNTING HOLES

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