P/N 72A-3240-01 Rev. B, User Guide, DTA V6Copyright 2012 Doble Engineering Company

User Guide: Doble Test Assistant V6

Doble Test Assistant (DTA) is Doble Engineering Company’s software for testing high-voltage substation apparatus with Doble’sM4100-series instruments.

These sheets present usage notes and new features for DTA Version 6, including: • A newly-designed user interface • Integration with the secure Doble Database of apparatus records • Integration with Doble’s FRANK™ (First Response ANalytics Knowledgebase™) expert system for evaluating test results

This user guide covers the following topics:

• Working with Files• Merging Files • Working with Test Plans (2 sheets)• Working with Tests and Results• External Reference Tests (2 sheets)• Power Factor Tip-Up Plots

User Guide:Doble Test Assistant V6

Doble Database TabSend data to/from Doble’s securedatabase for analysis or support.

File Selection Criteria (filters)

Doble Test AssistantVersion 6.2

Copyright 2012, Doble Engineering Company

Clear the display ofrecently opened files.

Working with FilesEach piece of equipment (apparatus) is represented by an individual .dtax filewhich references its location, identity, serial number, and other identifying designations.It includes a complete history of tests run on that device, along with the test results. Legacy (.xml) files will be written out in .dtax format.

Recently Opened Files Tab For resuming or updating current projects

P/N 72A-3240-01 Rev. B, User Guide, DTA V6

Filter byFile Type

.dtax - DTA Version 6 file

.xml - Legacy DTA file

.m4k - Clipboard File

Drag to move or resize columns.Click to • select sort column • toggle sort order

Go up one level in the directory tree.Browse Test Files Tab

Open a file to access that apparatus Test Plan, or

Click New File to register a new apparatus.

and create a test plan for it.

Hint: store files in a tree structure. Too many files in one folder slowsdown browsing and sorting.

Use right-click menu to manage files.

Connect to Doble Database with • username • password • company name

Working with Files

Doble Test AssistantVersion 6.2Merging Files

Merging data from different test sessions

DTA6 automatically scans the files within a folder to see if they can be merged. Files can be merged when each file shares the same apparatus type, serial number, and special ID.

1. Navigate to the directory of interest. If potential matches exist, DTA6 identifies them.

Closer comparison reveals files are not compatible. Or

3. Click OK. No merge occurs.

The merge is performed:• Data from source files is combined in one new file.• Filename is created according to your Preferences and assigned latest Test Date from source files.

3. Click Save. The new file is saved. Source files are sent to the Recycling bin.

2. Examine the merge candidates. Deselect any you do not wish to merge.

Two results are possible.

Copyright 2012, Doble Engineering Company

P/N 72A-3240-01 Rev. B, User Guide, DTA V6Merging Files

P/N 72A-3240-01 Rev. B, User Guide, DTA V6Copyright 2012 Doble Engineering Company

Doble Test AssistantVersion 6.2Working with Test Plans 1

1. Create a new apparatus file. 2. Enter nameplate data.

3. Save.

Doble Test Assistant generates test plans for new devices and configurations.

Required fields are validated.

Fields change dynamically in response to inputs.

Each child apparatus has a nameplate.

Click the Test Session tab to view, configure, or run tests.

Existing apparatus files already contain test plans.

Working with Test Plans 1

3. Open the Test Window to run tests.

Working with Test Plans 2

Doble Test AssistantVersion 6.2Working with Test Plans 2

Designate asReplaced

Copy w/oSerial #

Selectedapparatus

Manage attached equipment (child apparatus).

Rows are grouped by test lead connection.

1. Open the Test List.

P/N 72A-3240-01 Rev. B, User Guide, DTA V6Copyright 2012 Doble Engineering Company

2. Open and configure tests.Select test setups. Enter test parameters.

P/N 72A-3240-01 Rev. B, User Guide, DTA V6Copyright 2012 Doble Engineering Company

Doble Test AssistantVersion 6.2Test Setups and Results

1. Select Test Setups. 2. Enter Test Parameters.

Enabled when testrow(s) are selected.

4. Open the test window.3. Queue the test(s).

Update apparatus file.

5. Run the test(s).

Latest row is shown.All results are recorded.

Some tests update continuously until stopped.

Delete new results.Rerun test(s).

When you accept Test Results,

Related fields update automatically.

Results are saved to the apparatus file.

6. Accept the results.

Test Setups and Results

P/N 72A-3240-01 Rev. B, User Guide, DTA V6

Copyright 2012 Doble Engineering Company

Doble Test AssistantVersion 6.2Loss Factor Testing with External

References and Power SourcesThe M4100 Instrument contains resistive and capacitive references for measuring specimen reactivity, and can power tests up to 300 mA at 12 kVAC.

Doble Test Assistant supports these additional functions: • Adding an M4120 External Reference Module to take measurements by comparing measured values against external reference standards • Powering tests to higher potentials with an external power source, using the M4100 as a measurement unit

Reference I.E.E.E Standard 510-1983 Recommended Practices for Safety in High Voltage and High Power Testing

M4120

Hardware Setup

1. Open Apparatus File.

Specify all relevantvalues.

Externalreference

TestSpecimen

ExternalPowerSource

UST Connections GST ConnectionsJumper for GST

Page 1 of 2: Test Setup

External Reference Test is available only for apparatusclassified as Miscellaneous.

Loss Factor Testing 1

2. Set Test and Reference Parameters.

P/N 72A-3240-01 Rev. B, User Guide, DTA V6

Copyright 2012 Doble Engineering Company

Doble Test AssistantVersion 6.2

Page 2 of 2: Running Tests

1. Open External Reference Test.

Test Setup: See previous page

Values entered in Test Setup Averaging normaland reverse testscompensates forEMI.

Loss Factor Testing with ExternalReferences and Power Sources

DTA computes ireffrom setup data; rejects overcurrent.2. Run, Measure.

3. Done.

Doble’s M4100 Instrument with an M4120 External Reference Module may be used as a measurement unit for these tasks: • Measuring specimen loss factors against external reference standards • Powering tests to higher potentials with an external power sourceWe assume the hardware and DTA V6 software are already configured.

Doble Engineering Company does not supplyor certify third-party apparatus.

Reference: I.E.E.E Standard 510-1983 Recommended Practices for Safety in High Voltage and High Power Testing

Select Test Mode.Select Reference Type.

Caution: Selecting a REVERSE test brings up

Selecting a NORMAL test does not. Remember to make the adjustment when a normal test follows a reverse test.

Loss Factor Testing 2You must click this to take the measurement!

P/N 72A-3240-01 Rev. B, User Guide, DTA V6Copyright 2012 Doble Engineering Company

Doble Test AssistantVersion 6.2Power Factor Tip-Up Plots

Tip-Up: Change in insulation power factor (PF) at different voltages

Tip-Up(row) = PF(Vtest) – PF(Vlowest_in_that_group_of_rows)

Comparing Stator Coil Tip-Up from Different Test Sessions

Test voltages don’t have to match previous values.

Performs line sync reversals (LSR) for each test,improving EMI rejection, but decreasing test speed.Not normally necessary (leave unchecked).

Generates test rowsfor all test voltages.

UST for P-P testsGST for G-P tests

Shows test leadconnectionsShows test leadconnectionsShows test leadconnections.

Select a group in thefirst test session.

Select a test sessionfor comparison.

Toggle plot visibility.

2. Select test groups, run tests.Results appear forall test rows executed.

Tip Up is computed againstlowest session’s maximumtest voltage.

%PF autoscales to show complete traces.

3. Open Tip Up Plot(s) tab.

1. Open a new (or existing) Overall test plan for rotating machinery.

Default offset = V(low).Drag to shift offset to 0.

Power Factor Tip-Up Plots