doble SFRA User Manual

Sweep Frequency Response

User Guide

Analyzer (SFRA)

Doble Engineering Company

85 Walnut Street

Watertown, Massachusetts 02472-4037

(USA)

www.doble.com

72A-2570-01 Rev. K 07/2011

LEGAL NOTICE

Warranty

Equipment Limited
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ANY CLAIM BY ANY OTHER PARTY.

Maintenance For Equipment Maintenance, contact:

Customer Service Manager
Doble Engineering Company
85 Walnut Street
Watertown, MA02472 (USA)

Telephone: [phone]
FAX: [phone]
Email: [e-mail]
Web: www.doble.com

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Restricted Rights
Legend

Use, Duplication, or Disclosure by the U.S. Government is subject to
restrictions as set forth in subparagraphs (c)(1) and (c)(2) of the Commercial
Computer Software - Restricted Rights Clause at FAR 52.227-19.

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Property Notice

This Manual is solely the property of the Doble Engineering Company
(Doble) and is provided for the exclusive use of Doble clients under
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trademarks of Microsoft Corporation in the United States and/or other
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Copyright ©1999-2011
By Doble Engineering Company
All Rights Reserved

Content s

List of Figures .............................................................................................ix

List of Tables .............................................................................................xiii

Preface .......................................................................................................xv

1. Introduction ..........................................................................................1-1

M5200, M5300, and M5400 SFRA Instruments..........................................................................1-1

Hardware Accessories ..................................................................................................................1-3

Software........................................................................................................................................1-4

PC Requirements..........................................................................................................................1-4

2. Safety ...................................................................................................2-1

Overview ......................................................................................................................................2-1

General Rules ...............................................................................................................................2-1

Grounding Requirements..............................................................................................................2-2

Personnel Safety Practices............................................................................................................ 2-3

3. Setting Up and Running a Test ............................................................3-1

Measurement Types......................................................................................................................3-1

Open Circuit...........................................................................................................................3-1

Short Circuit........................................................................................................................... 3-1

Step 1: Set Up and Run a Shorted-lead Test ................................................................................ 3-2

Connect the Cable and Leads and Run SFRA 5.2..................................................................3-2

Create a Transformer Listing and Associate a Test Template with It....................................3-4

Run the Shorted-lead Test......................................................................................................3-8

Step 2: Ground the Transformer.................................................................................................3-12

Step 3: Prepare the Transformer for Testing..............................................................................3-14

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Sweep Frequency Response Analyzer (SFRA) User Guide

Step 4: Select and Run a Test.....................................................................................................3-15

Requirements for This Test..................................................................................................3-15

Associate the Transformer with a Test Template.................................................................3-15

SFRA Test Procedure...........................................................................................................3 -18

Self-Test Error and Warning Messages................................................................................3-22

Troubleshooting Test Results...............................................................................................3-24

Monitoring Waveforms..................................................................................................3-24

Diagnosing Open-Circuit Response...............................................................................3-25

Sample Test Results....................................................................................................................3-25

Three Responses for One Transformer.................................................................................3-25

HV Wye (Star) Response .....................................................................................................3-27

Short-Circuit Test Response.................................................................................................3-27

Repeat Results for One Phase at Different Times................................................................3-29

Results Showing a Shorted Turn..........................................................................................3-29

Confirming the Ethernet Connection....................................................................................3-30

4. Managing Tests and Templates ...........................................................4-1

Introduction...................................................................................................................................4-1

Opening the Template Editor........................................................................................................4-1

Creating a New Test Template .....................................................................................................4-2

Editing or Deleting a Template.....................................................................................................4-3

Adding, Editing, or Deleting Tests in a Template........................................................................4-3

Creating a New Test Setting...................................................................................................4-4

Editing or Deleting a Test Setting..........................................................................................4-4

5. Managing Data and Generating Reports ..............................................5-1

Managing Location Information...................................................................................................5-1

Adding or Deleting SFRA Instrument Information......................................................................5-3

Adding or Deleting Organization Information .............................................................................5-4

Managing Transformer Information.............................................................................................5-5

Entering a Transformer into the SFRA Database...................................................................5-5

Editing or Deleting Transformer Data....................................................................................5-6

Cloning a Transformer ...........................................................................................................5-6

Importing and Exporting Transformer Files...........................................................................5-7

Managing Tap Changer Data........................................................................................................5-7

vi 72A-2570-01 Rev. K 07/2011

Contents

Managing Results Data................................................................................................................. 5-8

Default Data Locations ..........................................................................................................5-8

Selecting a Data Source .........................................................................................................5-9

Export Selected Results to .CSV Files.................................................................................5-10

Import Location and Transformer from Results Files..........................................................5-11

Saving and Deleting Traces .................................................................................................5-11

Importing 1.x and 2.x M5100 SFRA Files...........................................................................5-12

Transferring Data between Machines or PCs.......................................................................5-12

Settings Files........................................................................................................................5-12

Merging Settings Files ......................................................................................................... 5-14

Reports ................................................................................................................................. 5-16

A. Software Overview ...............................................................................A-1

Installing SFRA 5.2..................................................................................................................... A-1

Manually Install the USB Driver.................................................................................................A-5

Where to Find the Driver ...................................................................................................... A-5

Remove Previously Installed USB Drivers...........................................................................A-5

Install the Driver ...................................................................................................................A-5

SFRA 5.2 Software Overview..................................................................................................... A-6

File Menu .............................................................................................................................. A-6

Edit Menu.............................................................................................................................. A-6

Test Init Menu....................................................................................................................... A-7

Graph Menu ..........................................................................................................................A-7

Help....................................................................................................................................... A-9

Apparatus/Test and Legend Panes.............................................................................................A-10

Apparatus and Test Pane..................................................................................................... A-10

Legend Pane........................................................................................................................ A-10

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Tab Divisions in SFRA..............................................................................................................A-11

Data Manager Tab...............................................................................................................A-11

Magnitude Tab.....................................................................................................................A-12

Phase Tab.............................................................................................................................A-13

Impedance Tab ....................................................................................................................A-14

Sub-Band Tab......................................................................................................................A-15

Waveform Tab.....................................................................................................................A-16

Analysis Tab........................................................................................................................A-17

Tabulation Tab.....................................................................................................................A-18

Apparatus Tab .....................................................................................................................A-19

B. Test Templates ....................................................................................B-1

Introduction.................................................................................................................................. B-1

Notes About the Test Templates..................................................................................................B-1

Two-Winding Transformers........................................................................................................B-2

Autotransformers.........................................................................................................................B-3

Three-Winding Transformers......................................................................................................B-4

C. Theory of Operation.............................................................................C-1

Transformer Damage and SFRA Testing .................................................................................... C-1

How SFRA Identifies Damage to Transformers .........................................................................C-2

Test Cable Lengths ...................................................................................................................... C-4

Transformer ................................................................................................................................. C-5

D. Repairs and Replacement Parts..........................................................D-1

Replacing a Fuse..........................................................................................................................D-1

Repairs.........................................................................................................................................D-3

Replacement Parts .......................................................................................................................D-3

M5200 and M5400................................................................................................................D-3

M5300....................................................................................................................................D-5

E. M5200/M5300/M5400 Technical Specifications...................................E-1

Instrument Specifications .............................................................................................................E-1

Lead Specifications.......................................................................................................................E-3

PC Requirements ..........................................................................................................................E-4

viii 72A-2570-01 Rev. K 07/2011

List of Figures

Figure 1.1 M5200, M5300, and M5400 Instruments............................................................. 1-2

Figure 2.1 Connecting Safety Ground to Transformer........................................................... 2-2

Figure 3.1 Cable and Lead Connections to the SFRA Instrument......................................... 3-2

Figure 3.2 Connect to Instrument Message............................................................................ 3-3

Figure 3.3 Select Instrument Window.................................................................................... 3-3

Figure 3.4 Data Manager Tab on Main Window ................................................................... 3-4

Figure 3.5 Edit Apparatus Option on Edit Menu ................................................................... 3-5

Figure 3.6 Test Equipment Editor.......................................................................................... 3-5

Figure 3.7 Transformer Tab of Transformer Editor Window ............................................... 3-6

Figure 3.8 New Serial Number Listing .................................................................................. 3-6

Figure 3.9 Test Templates Tab of Transformer Editor Window............................................ 3-7

Figure 3.10 Template Editor Window...................................................................................... 3-7

Figure 3.11 Apparatus Selection Window................................................................................ 3-8

Figure 3.12 Location of Start Test Button ................................................................................ 3-8

Figure 3.13 Test Details Window............................................................................................. 3-9

Figure 3.14 Cable Connections for Shorted-lead Test ............................................................. 3-9

Figure 3.15 Shorted-lead Test in Progress ............................................................................. 3-10

Figure 3.16 Correct Shorted-lead Response........................................................................... 3-11

Figure 3.17 Open-Circuit Lead Response.............................................................................. 3-11

Figure 3.18 De-energized and Disconnected Transformer.................................................... 3-12

Figure 3.19 Grounded Transformer........................................................................................ 3-12

Figure 3.20 Removed Isophase or GIS Link.......................................................................... 3-13

Figure 3.21 Added Temporary Static-Discharge Grounds..................................................... 3-13

Figure 3.22 Connected SFRA Leads...................................................................................... 3-13

Figure 3.23 Removed Temporary Static-Discharge Grounds................................................ 3-14

Figure 3.24 Edit Apparatus Option on Edit Menu ................................................................. 3-15

Figure 3.25 Test Equipment Editor........................................................................................ 3-16

Figure 3.26 Transformer Tab of Transformer Editor Window ............................................. 3-16

Figure 3.27 Test Templates Tab of Transformer Editor Window.......................................... 3-17

Figure 3.28 Template Editor Window.................................................................................... 3-17

Figure 3.29 Apparatus Selection Window.............................................................................. 3-18

Figure 3.30 Location of Select Test Button............................................................................ 3-19

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Figure 3.31 Test Selection Window ....................................................................................... 3-19

Figure 3.32 Location of Start Test Button.............................................................................. 3-20

Figure 3.33 Test Details Window........................................................................................... 3-20

Figure 3.34 Nonstandard Test Warning ................................................................................. 3-21

Figure 3.35 Test Details Dialog Box with Advanced Test Protocol ...................................... 3-21

Figure 3.36 Alert 952.............................................................................................................. 3-22

Figure 3.37 Error 953 ............................................................................................................. 3-23

Figure 3.38 Test in Progress................................................................................................... 3-24

Figure 3.39 Typical Open-Circuit Trace ................................................................................ 3-25

Figure 3.40 Responses for One Phase of a Transformer HV Delta Trace.............................. 3-26

Figure 3.41 HV Delta Winding Traces................................................................................... 3-26

Figure 3.42 HV Wye Winding Trace ..................................................................................... 3-27

Figure 3.43 Short-Circuit Test Trace...................................................................................... 3-28

Figure 3.44 Short Circuit Trace – Detail................................................................................ 3-28

Figure 3.45 Repeat Results for One Phase ............................................................................. 3-29

Figure 3.46 Shorted Turn on One Winding............................................................................ 3-30

Figure 3.47 Start Menu........................................................................................................... 3-30

Figure 3.48 Command Window Displaying IP Address........................................................ 3-31

Figure 4.1 Template Editor..................................................................................................... 4-2

Figure 4.2 Test Setting Editor................................................................................................. 4-3

Figure 5.1 Test Equipment Editor .......................................................................................... 5-2

Figure 5.2 Entering a New Location ...................................................................................... 5-2

Figure 5.3 Entering a New Serial Number ............................................................................. 5-3

Figure 5.4 Entering a New Organization................................................................................ 5-4

Figure 5.5 Transformer Tab of Transformer Editor Window ................................................ 5-5

Figure 5.6 Edit Serial Number Dialog Box............................................................................ 5-6

Figure 5.7 LTC/DETC Tab of Transformer Editor Window ................................................. 5-8

Figure 5.8 Sweep Frequency Response Analyzer Settings Dialog Box................................. 5-9

Figure 5.9 Browse for Folder Dialog Box.............................................................................. 5-9

Figure 5.10 Files Converted Dialog Box................................................................................ 5-11

Figure 5.11 Simplified XML Transformer Settings File........................................................ 5-13

Figure 5.12 Transformer Settings File — User A .................................................................. 5-14

Figure 5.13 Transformer Settings File — User B .................................................................. 5-15

Figure 5.14 TransformerNameplate Section of User B’s Settings File.................................. 5-16

Figure 5.15 Report Designer Window.................................................................................... 5-17

Figure A.1 Welcome Window of Setup Wizard .................................................................... A-2

Figure A.2 Select Installation Folder Window ....................................................................... A-2

Figure A.3 Confirm Installation Window .............................................................................. A-3

x 72A-2570-01 Rev. K 07/2011

List of Figures

Figure A.4 Progress Bar in Installation Window................................................................... A-3

Figure A.5 Identifying an M5300 .......................................................................................... A-4

Figure A.6 Select Default Template Window........................................................................ A-4

Figure A.7 Plot Property Dialog Box................................................................................... A-10

Figure A.8 Data Manager Tab.............................................................................................. A-11

Figure A.9 Magnitude Tab................................................................................................... A-12

Figure A.10 Status Bar........................................................................................................... A-12

Figure A.11 Phase Tab........................................................................................................... A-13

Figure A.12 Status Bar........................................................................................................... A-13

Figure A.13 Impedance Tab................................................................................................... A-14

Figure A.14 Status Bar........................................................................................................... A-14

Figure A.15 Sub-Band Tab .................................................................................................... A-15

Figure A.16 Waveform Tab................................................................................................... A-16

Figure A.17 Analysis Tab ...................................................................................................... A-17

Figure A.18 Tabulation Tab................................................................................................... A-18

Figure A.19 Apparatus Tab.................................................................................................... A-19

Figure D.1 Location of Fuses on M5400 ............................................................................... D-1

Figure D.2 Blade in Top of Fuse Cover................................................................................. D-2

Figure D.3 Open Fuse Cover with Fuses in Place.................................................................. D-2

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xii 72A-2570-01 Rev. K 07/2011

List of Tables

Table 1.1 M5200, M5300, and M5400 Instruments .............................................................1-2

Table 1.2 Accessories for the SFRA Instruments ................................................................. 1-3

Table A.1 File Menu Options ................................................................................................A-6

Table A.2 Edit Menu Options ................................................................................................ A-6

Table A.3 Test Init Menu Options .........................................................................................A-7

Table A.4 Graph Menu Options ............................................................................................A-7

Table A.5 Help Menu Options .............................................................................................. A-9

Table B.1 Two-Winding Transformers — 9 Tests ................................................................ B-2

Table B.2 Autotransformer without Tertiary or with Buried Tertiary — 9 Tests ................. B-3

Table B.3 Autotransformer With Tertiary — 18 Tests ......................................................... B-3

Table B.4 Three-Winding Transformer Table – 18 Tests (Part 1) ........................................ B-4

Table B.5 Three-Winding Transformer Table – 18 Tests (Part 2) ........................................ B-5

Table D.1 M5200 and M5400 Cable and Adapter Parts List ................................................ D-3

Table D.2 M5200 and M5400 Additional Components ........................................................D-4

Table D.3 M5300 Cable and Adapter Shipping/Replacement List .......................................D-5

Table D.4 M5300 Additional Components ...........................................................................D-5

Table E.1 Instrument Specifications ......................................................................................E-1

Table E.2 Test Lead Specifications ........................................................................................E-3

Table E.3 PC Requirements ...................................................................................................E-4

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xiv 72A-2570-01 Rev. K 07/2011

Preface

The Sweep Frequency Response Analyzer User Guide explains how to install,
configure, and operate Doble’ s M5200, M5 300, and M5400 Sweep Frequency
Response Analyzer instruments.

Who Should Read This Guide

This guide is intended for engineers and field testers who work with an

M5200, M5300, or M5400 Sweep Frequency Response Analyzer. It is

assumed that the reader is familiar with professional standards and safety
practices.

Document Conventions

Typefaces

This document uses special typefaces to indicate particular kinds of
information:

Notes and Warnings

This document uses icons to draw your attention to information of special
importance, as follows.

Notes

72A-2570-01 Rev. K 07/2011 xv

• Bold Arial type identifies software controls and text you must enter:
Example: Type in

• Monospaced type identifies text that is displayed in the user interface,
such as an error message or prompt:

Uploading test results.

NOTE! Notes provide supplemental information that may apply to only
some circumstances.

1500 ms.

Sweep Frequency Response Analyzer (SFRA) User Guide

Cautions

CAUTION! Cautions provide information that prevents damage to
hardware or data.

Warnings

WARNING! Warnings tell you how to prevent injury or death to anyone
near the test set or high-voltage equipment.

xvi 72A-2570-01 Rev. K 07/2011

1. Introduction

This chapter describes the SFRA instrument hardware and software and
introduces SFRA testing. It contains the following sections:

• “M5200, M5300, and M5400 SFRA Instruments” on page 1-1

• “Hardware Accessories” on page 1-3

• “Software” on page 1-4

• “PC Requirements” on page 1-4

M5200, M5300, and M5400 SFRA Instruments

Sweep Frequency Response Analysis (SFRA) testing is a nonintrusive way to
identify mechanical changes inside a transformer. Changes in the internal
configuration produce different frequency responses that indicate a range of
failure modes. Performed in the field, without teardown or draining of oil,
SFRA testing provides accurate and repeatable measurements.

The M5200, M5300, and M5400 Sweep Frequency Response Analyzers
measure and record the frequency-response characteristics of transformer
windings. Each unit consists of a robust molded shell housing a field
controller and instrumentation module, an excitation source, and a
measurement module. Table 1.1 describes the three SFRA instruments.

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Sweep Frequency Response Analyzer (SFRA) User Guide

Table 1.1 M5200, M5300, and M5400 Instruments

Name Description Image

M5200 Requires an external

laptop. Testing functions
are identical to those of
the M5300 and M5400.

M5300 Has a built-in laptop,

keyboard, and display.
Testing functions are
identical to those of the
M5200 and M5400.

M5400 A compact version of the

M5200 that requires an
external laptop. Testing
functions are identical to
those of the M5200 and
M5300.

Figure 1.1 M5200, M5300, and M5400 Instruments

1-2 72A-2570-01 Rev. K 07/2011

Hardware Accessories

Table 1.2 describes the standard hardware accessories that come with the

M520, M5300, and M5400. It also lists an optional test lead.

Table 1.2 Accessories for the SFRA Instruments

Test Leads

1. Introduction

Item Description Part No.

Standard lead Length: 18 m/60 ft

Ground: 3.6 m/12 ft
Application: 362 kV

Optional lead Length: 30 m/100 ft

Ground: 5.4 m/18 ft
Application: > 362 kV

Grounds

Safety ground Length: 9 m/30 ft 02C-0019-01

05B-0659-04

05B-0659-07

Ground lead 1.5 m/5 ft 02B-0026-02

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Sweep Frequency Response Analyzer (SFRA) User Guide

Table 1.2 Accessories for the SFRA Instruments

Item Description Part No.

Communication Cables

USB
No picture available.

Ethernet crossover
No picture available.

Other Hardware

Clamps Two plain copper

Has a square and an
oblong connector.

Has two Ethernet
connectors. Required
for SFRA. SFRA does
not work with a
standard network
cable without a
crossover adapter.

clamps. These clamps
connect to larger
bushing studs or
terminals that the
normal connectors do
not fit. The standard
test cables then clip to
these large clamps.

181-0585

181-0646

212-0444

Software

The M5200 and M5400 are controlled by a user-supplied laptop computer
running Doble SFRA software (supplied with the instrument). The M5300
comes with a built-in PC, laptop keyboard, and preinstalled Doble SFRA
software.

PC Requirements

To see the minimum requirements for the PC used with the M5200 or M5400,
please go to “PC Requirements” on page E-4.

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2. Safety

Overview

This chapter reviews the standards and procedures you need to follow to use
the SFRA instrument safely. It contains the following sections:

• “Overview” on page 2-1

• “General Rules” on page 2-1

• “Grounding Requirements” on page 2-2

• “Personnel Safety Practices” on page 2-3

Safety cannot be over-emphasized when working on or around high-voltage
electrical apparatus. Companies that generate, transmit, distribute, or use
high-voltage electricity should, and do, have precise rules for safe practices
and procedures. These practices are important for personnel whose working
responsibilities involve testing and maintaining high-voltage apparatus and its
associated lines, cables, conductors, and accessories.

General Rules

72A-2570-01 Rev. K 07/2011 2-1

1. The transformer under test should be completely de-energized and isolated

from the power system before performing any tests using an M5000-series
SFRA instrument.

2. The method of testing a high-voltage apparatus (transformer) involves

exciting the apparatus with the SFRA instrument. Take care to avoid
contact with the apparatus being tested, its associated bushings and
conductors, and the SFRA instrument’s cables and connectors.

3. The test crew must make a visual check to ensure that the apparatus

terminals are isolated from the power system. Because the apparatus under
test may fail, take precautions (such as barriers or entrance restrictions to
the test area) to avoid harm in case of violent failure.

Sweep Frequency Response Analyzer (SFRA) User Guide

4. All of your company rules for safe practice in testing must be strictly

conformed to, including all practices for tagging and isolating apparatus
during testing and maintenance work. State, local, and federal regulations,
e.g., OSHA, may also apply.

Company rules and government regulations take precedence over Doble
recommendations.

Personal protective equipment suitable for electrical testing of
transformers is recommended.

Grounding Requirements

The apparatus under test, its tank or housing, and the SFRA instrument must
be solidly and commonly grounded or earthed. This also applies to any mobile
equipment being tested. Figure 2.1 shows a sample safety ground connection.

Figure 2.1 Connecting Safety Ground to Transformer

For detailed instructions on grounding the SFRA instrument, go to

Ground the Transformer” on page 3-12

.

“Step 2:

2-2 72A-2570-01 Rev. K 07/2011

Personnel Safety Practices

Make sure that test personnel follow these recommendations:

1. A pretest meeting is recommended. Frequently, other crews will be

working on non-test-related tasks in close proximity to equipment being
tested. The pretest meeting should include all personnel who will be
working in proximity to the area where testing will be performed. In this
meeting, review with crew members the tests to be performed, apparatus,
voltage test levels involved, potential hazards, and individual assignments.
Test personnel need to remain aware of the work activity taking place
around them and alert to the possibility that non-test personnel may enter
the test area.

2. Agree on a consistent and uniform set of signals, both visual and verbal.

All crew members should follow them during testing.

3. While making the various types of connections involved in the tests, it

may be necessary for personnel to climb up on the apparatus, but no one
should remain on the apparatus during the test itself.

2. Safety

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Sweep Frequency Response Analyzer (SFRA) User Guide

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3. Setting Up and Running a Test

This chapter describes how to set up hardware and configure software for
testing and run the test. It also describes typical test results. This chapter
contains the following sections:

• “Measurement Types” on page 3-1

• “Step 1: Set Up and Run a Shorted-lead Test” on page 3-2

• “Step 2: Ground the Transformer” on page 3-12

• “Step 3: Prepare the Transformer for Testing” on page 3-14

• “Step 4: Select and Run a Test” on page 3-15

• “Sample Test Results” on page 3-25

Measurement Types

Open Circuit

An open-circuit measurement is made from one end of a winding to another,
with all other winding terminals floating. For a delta winding, connections
would be H1 to H3, for example. For a star (wye) winding, measurements are
taken from HV terminals to neutral, such as X1 to X0.

Short Circuit

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A short-circuit measurement is made with the same SFRA test lead
connections as an open-circuit measurement, but with the difference that
another winding is short- circuited. To ensure repeatability, Doble
recommends that the three voltage terminals on the shorted winding be shorted
together . This would mean, for example, shorting X1 to X2, X2 to X3, and X3
to X1. This ensures that all three phases are similarly shorted, ensuring a
consistent impedance. Do not include in the shorting process any neutral

connections available for the shorted winding.

Sweep Frequency Response Analyzer (SFRA) User Guide

1 BNC yellow, red, and black connectors 4 Green reference ground 2 of 2
2 Instrument ground 5 Red source lead
3 Green reference ground 1 of 2 6 Black measurement lead

1

2

4

3

5

6

Step 1: Set Up and Run a Shorted-lead Test

This section describes how to connect the cables to the SFRA instrument and
perform a basic shorted-lead test. Do not omit this test. If a cable or cable
connection is bad, this test will save you hours of wasted effort.

Connect the Cable and Leads and Run SFRA 5.2

To connect the ground reference cable and test leads and run SFRA:

1. Follow Figure 3.1 to connect the reference ground and test leads to the

instrument. This figure shows an M5300, but the connections are correct
for all three instruments.

Figure 3.1 Cable and Lead Connections to the SFRA Instrument

If you are using an:

• M5200 or M5400—Go to step 2.

• M5300—Power up the M5300 and go to “Create a Transformer

2. Power up the PC. Run the SFRA program by double-clicking the icon or

selecting

Listing and Associate a Test Template with It” on page 3-4.

StartAll ProgramsDoble EngineeringSFRA.

The main SFRA window opens and displays the

Instrument

message (Figure 3.2 on page 3-3).

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Connect to

3. Setting Up and Running a Test

Figure 3.2 Connect to Instrument Message

3. Turn on the SFRA instrument and wait 20 seconds. During this time:

a. The power light comes on.
b. The Test in Progress and System OK indicator lights come on.
c. The Test in Progress and System OK indicator lights go out.
d. The System OK indicator light comes on and remains lighted.

4. Attach the Ethernet or USB cable to the instrument and the PC.

NOTE: You can shorten the search time by deselecting any
communication type that is not in use.

5. Click the

Find Instrument button shown in Figure 3.2.

The Select Instrument window lists all connected instruments (Figure 3.3).

Figure 3.3 Select Instrument Window

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Sweep Frequency Response Analyzer (SFRA) User Guide

If no instrument is listed:

• Check the connection between the instrument and the PC.

• Check the antivirus or firewall software for problems.

• If your instrument is connected to the PC through an Ethernet cable,
confirm that the PC can see the instrument. To do this, see

“Confirming the Ethernet Connection” on page 3-30.

6. Click

7. Highlight the instrument desired and click

Continue Searching for Instruments.

Select Instrument.

The SFRA window displays the Data Manager tab (Figure 3.4).

Figure 3.4 Data Manager Tab on Main Window

Create a Transformer Listing and Associate a Test Template with It

NOTE: If the shorted-lead test has already been set up in SFRA 5.2, skip
this section and go to “Run the Shorted-lead Test” on page 3-8.

The shorted-lead test does not have an associated test template and is not
performed on a transformer. However, SFRA 5.2 test setup requires a
transformer name, under which the test results will be stored, and an
associated test template. Therefore, in the following instructions, you:

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3. Setting Up and Running a Test

• Create a dummy transformer called Leads

• Select a test template at random and associate it with the Leads

transformer

To create a dummy transformer and associate a test template with it:

1. In the main window of the SFRA software, open the

Edit Apparatus (Figure 3.5).

Figure 3.5 Edit Apparatus Option on Edit Menu

The Test Equipment Editor window opens (Figure 3.6).

Edit menu and select

Figure 3.6 Test Equipment Editor

2. Click the

Edit Transformers button on the right.

The Transformer Editor window opens, displaying the Transformer tab
(Figure 3.7 on page 3-6).

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Sweep Frequency Response Analyzer (SFRA) User Guide

Figure 3.7 Transformer Tab of Transformer Editor Window

3. Click

New (Figure 3.7).

The New Serial Number listing is highlighted (Figure 3.8).

Figure 3.8 New Serial Number Listing

4. Enter

5. Enter

6. Click the

Leads in the Manufacturer field.
0 in the Serial Number field.

Test Templates tab.

Note that the new serial number, 0, appears in the Transformer list
(item #1 Figure 3.9 on page 3-7).

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