Omicron Lab CT Analyzer User Manual
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Omicron Lab CT Analyzer User Manual

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  • Page 1 CT Analyzer & CT SB2 User Manual...
  • Page 2 CT Analyzer & CT SB2 User Manual Manual Version: CTAnalyzer+CTSB2UM.AE.3 © OMICRON electronics GmbH 2012. All rights reserved. This manual is a publication of OMICRON electronics GmbH. All rights including translation reserved. Reproduction of any kind, for example, photocopying, microfilming, optical character recognition and/or storage in electronic data processing systems, requires the explicit consent of OMICRON electronics GmbH.
  • Page 3 CT Analyzer User Manual...
  • Page 4 CT Analyzer User Manual Manual Version: CTAnalyzerUM.AE.3...

  • Page 5: Table Of Contents

    Designated Use ..........11 Functional Components of the CT Analyzer ......12 1.2.1...
  • Page 6 The CT Analyzer Test Cards ........
  • Page 7 About the Guesser Function ........131 Setting Up and Connecting the CT Analyzer ......132 Preparing and Configuring the Test .
  • Page 8 System Requirements ......... . . 161 Installing the CT Analyzer PC Toolset ....... 161 The CTA Start Page .

  • Page 9: Preface

    Manual will help you to prevent danger, repair costs, and avoid possible down time due to incorrect operation. The CT Analyzer User Manual always has to be available at the site where the CT Analyzer is used. It must be read and observed by all users of the CT Analyzer.

  • Page 10: Conventions And Symbols Used

    Caution: Equipment damage or loss of data possible Warning: Risk of electric shock! Personal injury or severe damage to objects possible Related Documents The following documents complete the information covered in the CT Analyzer User Manual: Title Description CT SB2 User Manual...

  • Page 11: Safety Rules

    • Use only original accessories available from OMICRON. • If the CT Analyzer or any add-on device or accessory seems to be functioning improperly, please call the OMICRON Hotline (refer to chapter "OMICRON Service Centers" on page 185). •...

  • Page 12: Orderly Measures

    The CT Analyzer User Manual or the e-book version of the manual has always to be available on the site where the CT Analyzer is being used. All users of the CT Analyzer must read and observe the safety rules described in this section and all relevant installation and operation instructions.

  • Page 13: Introduction

    Using the Quick Test feature it is also possible to use the CT Analyzer as a versatile multimeter with included power source, e.g. for: •...

  • Page 14: Functional Components Of The Ct Analyzer

    CT Analyzer User Manual Functional Components of the CT Analyzer 1.2.1 Overview Figure 1-1 provides an overview of the operating and display elements and the connectors of the CT Analyzer. Output Remote control interface Grounding Display Generator output RS232 interface and USB...

  • Page 15: Mains Connection Unit And Grounding

    Introduction 1.2.2 Mains Connection Unit and Grounding Mains socket (IEC320) Mains fuse: 2 x T6.3A / 250V, high breaking capacity ON/OFF switch Grounding terminal (4mm socket combined with knurled nut for clamp connection) Figure 1-2 Mains connection unit and grounding terminal 1.2.3 Compact Flash Card Slot Compact Flash card...

  • Page 16: Remote Control Interface (Pc Connection)

    Since in this case the CT Analyzer provides two alternative interfaces, the user has to select the interface to be used (or check the selection) in the CT Analyzer settings before connecting the CT Analyzer. The factory default setting for those devices is USB.

  • Page 17: Inputs And Outputs

    Introduction Note: Please refer to the following sections for more information: • Section 2.3 on page 23 for information on how to connect the CT Analyzer to a PC. • Chapter 5 on page 59 for general information on how to operate the CT Analyzer.

  • Page 18: I/0 Key With Status Leds

    Red LED on the left, green LED on the right. I/0 key to start the test. During the boot process after switching the CT Analyzer on, both LEDs are on. The red LED is switched off when the boot process is finished and the CT Analyzer is ready for operation.

  • Page 19: Display With Soft Keys

    CT Analyzer PC Toolset (e.g. the CTA Remote Excel File Loader) running on that computer has established connection to the CT Analyzer. The keyboard on the CT Analyzer is locked until the running test is finished.

  • Page 20: Keyboard

    If the CT Analyzer displays the data of a previously stored test, and the data in this file are valid, a key is shown in the status line. If the file data are invalid since someone tried to edit them later, a broken key is displayed.

  • Page 21: License-Depending Functional Scope

    This User Manual describes the full functional scope provided when the complete set of licenses is available on the CT Analyzer. A lack of licenses may primarily result in functional restrictions regarding the selectable standards, classes, core types and frequencies as well as the availability of individual measurement functions and/or test cards.

  • Page 22: Scope Of Delivery, Accessories, Available Licenses

    CT Analyzer User Manual Scope of Delivery, Accessories, Available Licenses For up-to-date information about the scope of delivery and available accessories and licenses for the CT Analyzer please refer to the OMICRON website or the OMICRON office nearest you.

  • Page 23: Setup And Connection

    Before putting the CT Analyzer into operation, check the test set for visible damages. • When taking the CT Analyzer into operation, make sure that the air slots, the power switch and the power supply plug at the test set are not obstructed. •...

  • Page 24: Setting Up The Ct Analyzer

    Using the optional CT SB2 switch box can make the testing of multi-ratio CTs much safer. If necessary, the CT Analyzer then reduces the test voltage in a way that the maximum possible voltage within the measurement setup (i.e., the voltage occurring at the tap combination with the highest ratio) is limited to 200V.

  • Page 25: Connecting The Ct Analyzer To A Pc (Optional)

    – In the Select remote interface port page, select the interface actually used to connect the CT Analyzer to the computer: USB or RS232. 2. Connect the CT Analyzer to the PC using a RS232 cable or a USB cable as shown in the following figure.

  • Page 26: Connection For Usual Applications

    2.4.1 Wiring for a CT Test This section shows the basic wiring of the CT Analyzer for a CT test. Observe the general safety rules in section 2.1 on page 21 and the hints and instructions for improving the quality of the measurement results given in section 2.7 on page 42.
  • Page 27 Setup and Connection 4. Connect the black "Output" socket and the black socket of input "Sec" of the CT Analyzer to that terminal on the secondary side of the CT that is connected to PE. 5. Connect the red "Output" socket and the red socket of input "Sec" of the CT Analyzer to the other (ungrounded) terminal on the secondary side of the Prevent coupling of interferences into the primary circuit (e.g.

  • Page 28: Wiring For A Burden Test

    2.4.2 Wiring for a Burden Test For a burden test, connect the CT Analyzer as shown in Figure 2-3. Observe the general safety rules in section 2.1 on page 21. 1. Open the connection line to the ungrounded side of the CT (refer to Figure 2-3).

  • Page 29: Wiring For Primary Resistance Measurement

    CT during measurement leads to incorrect measurement results or error messages. 3. Connect the black socket of CT Analyzer input "Prim" to the grounded side of the CT’s primary winding and the red socket of this input to the open (ungrounded) side.

  • Page 30: Connection For Special Applications

    CT Analyzer User Manual Connection for Special Applications 2.5.1 Measurement on a Gapped Core For gapped cores, the position of the primary wire inside the core has a large influence on the ratio measurement results. Therefore, in order to obtain correct measurement results, it is very important to arrange the primary wire during measurement to the same position inside the core as it is during real operation.

  • Page 31: Excitation Curve Measurement For An Unwound Iron Core

    1. Apply the "auxiliary winding" cable to the unwound core. 2. Connect the "Output" sockets and input "Sec" of the CT Analyzer to the cable as shown in Figure 2-7. For cores that require high currents to reach the knee point, several cables can be cascaded to increase the number of turns, see Figure 2-8.

  • Page 32: Measurement On A Gis (Sf6) Switch Gear

    CT Analyzer User Manual 23 turns auxiliary winding Iron core without winding Figure 2-7 Excitation curve measurement using one "auxiliary winding" cable Figure 2-8 Excitation curve measurement using several cascaded "auxiliary winding" cables 2.5.3 Measurement on a GIS (SF6) Switch Gear Proceed as follows to perform measurements on a GIS (SF6) switch gear (refer to Figure 2-9).
  • Page 33 Connect that side of the CT that is open to the red sockets of the CT Analyzer. 6. Connect the primary side of the CT to CT Analyzer input "Prim". Make sure that the polarity is correct (same colors on same polarity).

  • Page 34: Measurement On Bushing-Type Cts

    Connect that side of the CT that is open to the red sockets of the CT Analyzer. 6. Connect the primary side of the CT to CT Analyzer input "Prim". Make sure that the polarity is correct (same colors on same polarity).
  • Page 35 The CT Analyzer has an input impedance of approx. 330kΩ. This measurement impedance can be low enough to influence the measurement results. In order to prevent any influence of the CT Analyzer's input impedance to the measurement results, the transformer winding at the same leg should be short-circuited.
  • Page 36 CT Analyzer User Manual Figure 2-11 Measurement on a Y winding transformer Measurement on a Δ (Delta) Winding Transformer CTs outside the delta winding For CTs that are located in the bushing outside of the delta winding (Figure 2-12), no delta compensation is needed.
  • Page 37 In order to obtain the correct CT ratio, the ratio value determined by the CT Analyzer has to be corrected. For this purpose, the CT Analyzer provides a "Delta Compensation" field on the CT- Object card where you can select the delta compensation factor depending on the bushing terminals that are used for primary signal measurement.
  • Page 38 CT Analyzer User Manual If it is possible to short-circuit the transformer winding at the same leg as the primary measurement is done (see Figure 2-15), the measurement should be performed with the winding short-circuited. In this case, no delta compensation is required since the voltage induced on the transformer’s secondary winding is...
  • Page 39 Setup and Connection Figure 2-15 Measurement setup for delta compensation "Ratio 1"...

  • Page 40: Vt Ratio Measurement Using Quicktest

    2.5.5 VT Ratio Measurement Using QuickTest To measure the ratio of VTs using the CT Analyzer, you can either use the Quick Test function of the CT Analyzer (see chapter 8 on page 135) or the CTA QuickTest PC tool which is part of the CT Analyzer PC Toolset.

  • Page 41: Vt Winding Resistance Measurement Using Quicktest

    To measure the winding resistance of VTs using the CT Analyzer, you can either use the Quick Test function of the CT Analyzer (see chapter 8 on page 135) or the CTA QuickTest PC tool which is part of the CT Analyzer PC Toolset.
  • Page 42 "Sec". Therefore, you should always connect this input when using the Polarity Check measurement type. The higher the resistance of the wiring checked (i.e., the burden wiring) or the current amplitude set on the CT Analyzer, the higher the terminal voltage generated by this current!

  • Page 43: Disconnection

    Warning: Never disconnect measurement leads while the red LED on the CT Analyzer is flashing. As long as the red LED is flashing, the output is active and lethal voltages can occur due to the high energy stored in external inductors.

  • Page 44: Improving The Quality Of Measurement Results

    4-wire connection technique as described below. Otherwise, the possibly existing contact resistance of the clamps could affect the measurement results, i.e., the CT Analyzer possibly delivers incorrect measurement results. Both connection techniques are shown in the following figure.

  • Page 45: Noise Reduction Techniques

    Setup and Connection 2.7.2 Noise Reduction Techniques For proper test results it is important to consider the following: • If possible, disconnect both primary terminals of the CT from the utility lines. • If possible, always use the original coax measurement cables delivered by OMICRON.
  • Page 46 CT Analyzer User Manual Utility line Utility line Connection required if secondary side terminal cannot be disconnected Use coax measurement cables! Burden Figure 2-20 Noise reduction for CT measurement...

  • Page 47: Short Guide For Running A Ct Test

    Short Guide for Running a CT Test Short Guide for Running a CT Test This chapter provides a short guide for running a CT test using the CT Analyzer. This short guide is intended as an overview of a complete test procedure. For more detailed information, please refer to chapter 4 on page 49.
  • Page 48 CT Analyzer User Manual Set up the CT Analyzer -> 2.2 on page 22 Switch the CT Analyzer on and display the CT-Object card -> 4.2 on page 50 Select test cards -> 4.2, step 2. on page 50 Enter CT name plate data ->...
  • Page 49 Test execution: Burden test Residual Magnetism measurement if enabled -> 6.4 on page 102 Connect CT Analyzer for primary winding resistance measurement -> 2.4.3 on page 27 Prim. Winding Resistance measurement enabled? Start Test...
  • Page 50 CT Analyzer User Manual...

  • Page 51: Running A Ct Test (Detailed)

    CT test. This is completely normal and does not indicate a defective Warning: Do not touch the equipment under test or the measurement leads while the red LED on the CT Analyzer is flashing. Never connect or disconnect measurement leads while the red LED on the CT Analyzer is flashing.

  • Page 52: Setting Up The Ct Analyzer

    CT Analyzer User Manual Setting Up the CT Analyzer 1. Set up the CT Analyzer as described in section 2.2 on page 22. Preparing and Configuring the Test 1. Proceed as follows to display the CT-Object card with a new CT test.
  • Page 53 Running a CT Test (Detailed) 3. Enter the CT name plate data listed in the table below to the CT-Object card (see Figure 4-2). Figure 4-2 CT-Object card with name plate data entered I-pn Rated primary current of the CT. I-sn Rated secondary current of the CT.

  • Page 54: Running The Automatic Test And Connecting The Ct Analyzer

    Connect the burden as described in chapter 2. – Make sure that the red LED on the CT Analyzer is off. – Refer to section 2.4.2 on page 26 for detailed information on how to connect the CT Analyzer for the burden test.
  • Page 55 Connect the primary winding of the CT as described in chapter 2. – Make sure that the red LED on the CT Analyzer is off. – Refer to section 2.4.3 on page 27 for detailed information on how to connect the CT Analyzer for the primary resistance measurement.
  • Page 56 CT data. 10.Automatic test step 3: Ratio measurement The CT Analyzer then measures the current ratio error, the phase error, the composite error and the polarity. The CT Analyzer calculates the ratio error for the operating burden (parameter "Burden" in the CT-Object card) and the nominal burden (parameter "VA"...

  • Page 57: After The Test Is Finished

    Running a CT Test (Detailed) Note: The test results and settings of each test finished with the "Test ok" status are automatically stored to the file OMICRON\AutoSave\ CTAnalyzer.xml on the Compact Flash card. The existing CTAnalyzer.xml file is overwritten with each successful test. Tests that could not be finished successfully or that were aborted by the user are not stored and thus do not overwrite the existing CTAnalyzer.xml file.
  • Page 58 CT Analyzer User Manual If desired, you can view the individual measurement results acquired during the test by viewing the Burden, Resistance, Excitation and Ratio cards, as shown in the following figures 4-11 to 4-14. Figure 4-11 Burden card with measurement results after the test is finished...

  • Page 59: Disconnection

    Warning: Never disconnect measurement leads while the red LED on the CT Analyzer is flashing. As long as the red LED is flashing, the output is active and lethal voltages can occur due to the high energy stored in external inductors.
  • Page 60 CT Analyzer User Manual...

  • Page 61: Operating And Configuring The Ct Analyzer

    CT-Object card selected 5.1.2 Using the Soft Keys Using the soft keys you can operate the CT Analyzer and change the user interface level of the software. The functionality of the soft keys is context-dependent, i.e., the software offers different functions or selectable sets of parameters depending on the focus (i.e., depending on which card or field is highlighted or selected in the user interface).

  • Page 62: Editing A Card

    CT Analyzer User Manual 5.1.3 Editing a Card To open the edit mode for a displayed card, press the cursor key. The card’s tab is then no longer highlighted (see Figure 5-3). Use the cursor keys to move the cursor and to select the desired edit field. Some edit fields have soft keys assigned.

  • Page 63: New Ct-Test

    Using the "New Quick-Test" option in the main menu you can open the optional How to get there: QuickTest feature. With this feature you can use the CT Analyzer as a Press the Main soft key in multimeter or perform polarity checks using the CPOL polarity checker.

  • Page 64: File Handling

    Renaming a selected file on the Compact Flash card. Only files can be renamed. Renaming of folders is not possible on the CT Analyzer. Copy / Cut / Paste Copying or cutting a file on the Compact Flash card and File(s) pasting it at another location on the Compact Flash card.

  • Page 65: Working In The File System

    Figure 5-8 File system card after creating a new folder Note: In the CT Analyzer file system, a directory can contain a maximum of 240 files and the maximum file name length is 240 characters. Renaming of folders is not supported by the CT Analyzer.
  • Page 66 Copying / cutting and pasting a file on the Compact Flash card How to get there: Press the Main soft key in Note: Copying / cutting and pasting folders is not possible with the CT Analyzer. any test card Main Menu: 1.

  • Page 67: Settings

    Select Startup Using this option you can select the default test mode the Mode CT Analyzer comes up each time when it is switched on. Select the mode using the soft keys: Single Tap: The CT Analyzer automatically initializes a normal single-ratio CT test.
  • Page 68 (refer to page 93 for more information). by Duty: Protection requirements specification by duty cycle and the necessary time constants (standard specification according to IEC 61869-2; the CT Analyzer then calculates the K automatically from the entered values).
  • Page 69 Here you can set the minimum VA value used for the CT assessment to 3.75VA. This means, selecting the 3.75VA soft key will cause the CT Analyzer to assess the CT only up to a lower nominal burden limit of 3.75VA instead of 1VA.
  • Page 70 Please refer to section 5.7.3 on page 70 for more information. 1. Only available for CT Analyzer devices that are equipped with a USB interface (serial number JHxxxx or newer).

  • Page 71: Default Test Card Selection

    Operating and Configuring the CT Analyzer 5.7.2 Default Test Card Selection Enabling or disabling test cards for the default test is done using the Default How to get there: Test Card Selection option from the Setting Menu. In this case, the test card Press the Main soft key in selection made in this page becomes effective when starting a new CT test.

  • Page 72: Miscellaneous Settings

    CT Analyzer User Manual CT-Object Sec. Winding Resistance requires Excitation requires Ratio requires Residual Magnetism requires Prim. Winding Resistance requires Burden requires Assessment requires Comment requires Figure 5-11 Dependencies of test cards To save your selection and return to the setting menu press the Back soft key.
  • Page 73 CT’s nominal data stated on the name plate. "Check "*" settings before start" If this option is enabled, the CT Analyzer checks whether the user has entered all necessary values and data relevant for an automatic assessment prior to the test start.
  • Page 74 Class multiplication The default value for the class multiplying factor can factor be set. This default is used when the CT Analyzer is switched on or if a new CT test is selected in the main menu. The class multiplying factor increases the assessment level for the ratio test.

  • Page 75: Tools (Update Functions)

    Operating and Configuring the CT Analyzer Tools (Update Functions) From the Tools Menu page you can access the update functions of the How to get there: CT Analyzer. Press the Main soft key in any test card Main Menu: - Tools Select soft key ->...

  • Page 76: Update Text

    5.8.2 Update Text Note: Instead of using the Update Text function of the CT Analyzer you can How to get there: also use the Firmware Update PC tool contained in the CT Analyzer PC Toolset. Press the Main soft key in...

  • Page 77: Update Firmware

    Note: Instead of using the Update Firmware function of the CT Analyzer you How to get there: can also use the Firmware Update PC tool contained in the CT Analyzer PC Press the Main soft key in Toolset. For detailed information, please refer to the help system of the CT...

  • Page 78: Ct Analyzer Help System

    When the help system is displayed, you can use the Next Page and Prev. Page soft keys to scroll through the available help pages. Pressing the About soft key opens a page with information about the CT Analyzer hardware, the installed firmware version, the serial number, etc.

  • Page 79: Operating The Ct Analyzer From A Computer

    5.10 Operating the CT Analyzer from a Computer It is also possible to operate the CT Analyzer remote controlled from a computer. Diverse software tools are available from OMICRON for this purpose. For a detailed description, please refer to the help system of the...
  • Page 80 CT Analyzer User Manual...

  • Page 81: The Ct Analyzer Test Cards

    Overview of Test Cards The following table provides an overview of all test cards available for the CT Analyzer. The set of test cards actually available on your CT Analyzer depends on your purchased license(s). Note: For up-to-date information about available licenses for the CT Analyzer please refer to the OMICRON website or contact your OMICRON sales contact.

  • Page 82: Ct-Object Card

    "Location" and "Object" remain unchanged. Saves the test results and test settings to the currently loaded CT Analyzer report file. If the test results have not been saved yet, the Save As dialog is opened. Saving a file is described on page 64.

  • Page 83: Information Fields To Be Filled By The User

    The CT Analyzer Test Cards Opens the Select Cards page where you can select the test cards for the current test. The Select Cards page is described on page 69. Note: When loading a new CT test from the main menu (using the "New CT-Test"...

  • Page 84: Parameters And Settings Used Or Determined By The Test Process

    (see section 5.7.3 ”Miscellaneous Settings” on page 70), no automatic assessment will be available if you do not enter data for a parameter that is relevant for assessment. Such parameters are marked by a star "*" in the CT Analyzer user interface and in the following tables.
  • Page 85 The CT Analyzer Test Cards Common Parameters and settings displayed for all standards, CT types and classes The table below lists all parameters and settings that are displayed for all standards, CT types and classes. In addition to these common parameters, specific additional parameters are displayed in the CT-Object card depending on the selected standard, CT type (protection or metering CT) and class.

  • Page 86: Parameter Description

    Selecting the Assess @ VA option in addition to the class setting will cause the CT Analyzer to consider only the burden value specified prior to testing for the CT assessment. The ratio table and the phase table in the Ratio card then only show the error for this specific burden (see section 6.7.5 on page...
  • Page 87 82). If the IEEE C57.13 standard is selected with the type "metering CT", the CT Analyzer offers some soft keys (e.g. B-0.1, B-0.2, B-0.5 etc.) with standard loads for the power. If these soft keys are used, the power is calculated according to table 9 of IEEE C57.13.
  • Page 88 CT is not in series with. 1. If the question mark is entered for this parameter and a new test is started, the CT Analyzer automatically tries to determine the value using its integrated guesser function (see chapter 7 on...
  • Page 89 Possible values: 0.03mA to 30000mA or soft key ? Default: ?. 1. If the question mark is entered for this parameter and a new test is started, the CT Analyzer automatically tries to determine the value using its integrated guesser function (see chapter 7 on page 131).
  • Page 90 300%, 400%. Default: 120%. 1. If the question mark is entered for this parameter and a new test is started, the CT Analyzer automatically tries to determine the value using its integrated guesser function (see chapter 7 on page 131).
  • Page 91 The CT Analyzer Test Cards Specific parameters and settings displayed for IEC 60044-6 The following parameters are only displayed in the CT-Object card if the standard IEC 60044-6 is selected. Param. Description Available for IEC 60044-6, class TPS TPX TPY TPZ Specified secondary winding resistance.
  • Page 92 CT Analyzer User Manual Param. Description Available for IEC 60044-6, class TPS TPX TPY TPZ Specified secondary time constant. Possible values: 0.000 to 100.0s or soft key ? Default: ?. Duty Specified duty cycle. Using the soft keys, two different energizing cycles can be selected: C-O or C-O-C-O Default: C-O.
  • Page 93 "Default Standard" parameter in section 5.7.1 on page 65). 1. If the question mark is entered for this parameter and a new test is started, the CT Analyzer automatically tries to determine the value using its integrated guesser function (see chapter 7 on page 131).
  • Page 94 CT Analyzer User Manual Specific parameters and settings displayed for IEC 61869-2 protection CTs The following parameters are only displayed in the CT-Object card if the standard IEC 61869-2 is selected with the type "Protection CT". Param. Description Available for IEC 61869-2...
  • Page 95 However, in some cases the choice of one specific duty cycle/time constant cannot describe all protection requirements. Therefore, the CT Analyzer offers the possibility to specify "more general requirements" (which cover the requirements of different duty cycles and time constants) by entering the K instead.
  • Page 96 CT Analyzer User Manual Param. Description Available for IEC 61869-2 protection CTs, class protection transient protection xP xPR PX PXR TPX TPY TPZ Ktd * Rated transient dimensioning factor according to the name plate. Note: Only displayed if parameter "Spec." is "by Ktd".
  • Page 97 The CT Analyzer Test Cards Param. Description Available for IEC 61869-2 protection CTs, class protection transient protection xP xPR PX PXR TPX TPY TPZ t-al1 * Permissible time to accuracy limit for first energizing period of the duty cycle. Note: Only displayed if parameter "Spec." is "by Duty".
  • Page 98 (see page 82). 1. If the question mark is entered for this parameter and a new test is started, the CT Analyzer automatically tries to determine the value using its integrated guesser function (see chapter 7 on page 131).
  • Page 99 Possible values: Soft keys On or Off. Default: On. 1. If the question mark is entered for this parameter and a new test is started, the CT Analyzer automatically tries to determine the value using its integrated guesser function (see chapter 7 on...
  • Page 100 1. Acc. to IEEE C57.13 (1993) 2. If the question mark is entered for this parameter and a new test is started, the CT Analyzer automatically tries to determine the value using its integrated guesser function (see chapter 7 on...
  • Page 101 The CT Analyzer Test Cards Specific parameters and settings displayed for IEEE C57.13 metering CTs The following parameter is only displayed in the CT-Object card if the IEEE C57.13 standard is selected with the type "Metering CT". Param. Description Available for IEEE C57.13...

  • Page 102: Burden Card

    "I-test" parameter field. No soft keys are available in the Burden card. Figure 6-4 Burden card If the CT Analyzer cannot reach the desired test current I , an overload test message is displayed in the right-hand corner of the status line.

  • Page 103: Test Results

    The CT Analyzer Test Cards 6.3.2 Test Results The lower part of the Burden card shows the results of the burden test after the test is finished. Parameter Description I-meas Current measured during the test. V-meas Voltage measured at the load during the test.

  • Page 104: Residual Magnetism Card

    Note: The wiring for residual magnetism measurement is identical to the wiring for a normal CT test (see section 2.4.1 on page 24). Note: Gapped cores normally have very low residual magnetism. The CT Analyzer is possibly not able to determine the knee point of gapped cores.

  • Page 105: Test Settings And Results

    Residual magnetism [in %] of the CT, calculated from the Magnetism residual flux and the maximum flux of the CT. No value is displayed if the CT Analyzer was not able to reach the knee point of the excitation curve. 6.4.2 Running a Residual Magnetism Measurement 1.
  • Page 106 As long as the red LED is flashing, the output is active and lethal voltages can occur due to the high energy stored in external inductors. 5. If the burden test is enabled, the test halts and the CT Analyzer displays a corresponding message, asking you to check the wiring for the burden test.

  • Page 107: Resistance Card

    The CT Analyzer Test Cards Resistance Card The Resistance card is only available if winding resistance measurement is enabled in the Select Cards page (Default Test Card Selection or Select Cards soft key in the CT-Object card). The Select Cards page offers two different types of winding resistance measurements for selection: •...

  • Page 108: Primary Winding Resistance Measurement

    CT Analyzer User Manual 6.5.1 Primary Winding Resistance Measurement Measuring the primary winding resistance is only required in case of a perceptible primary winding resistance, i.e., if the primary winding actually consists of multiple turns. Primary winding resistance measurement is performed prior to the CT test and requires special wiring.

  • Page 109: Test Settings And Results

    The CT Analyzer Test Cards 6.5.3 Test Settings and Results The following settings are required to perform a winding resistance test. Parameter Description T-meas Winding temperature of the CT at the time of measurement. Value used: Ambient Temperature defined in the Settings (main menu).

  • Page 110: Excitation Card

    Figure 6-12 Excitation card with values related to nominal burden If the CT Analyzer displays an overload in the Excitation card, either the desired knee point could not be reached or not all necessary measurement points could be taken (e.g. in the knee point area, not enough points for a proper calculation...

  • Page 111: Available Soft Keys

    The CT Analyzer Test Cards 6.6.1 Available Soft Keys Displays the results related to the nominal burden of the CT. Displays the results related to the operating burden of the CT. Opens the excitation graph page (refer to section 6.6.4 on page 114).
  • Page 112 Max. allowed excitation current at E 1. If the CT Analyzer is not able to measure up to the actual value, the prefix ">" is displayed to indicate that the measurement value is larger than the displayed value.
  • Page 113 Peak instantaneous error at voltage E ε 1. If the CT Analyzer is not able to measure up to the actual value, the prefix ">" is displayed to indicate that the measurement value is larger than the displayed value.
  • Page 114 CT Analyzer User Manual Test results displayed in the Excitation card for IEC 61869-2 Param. Description Results displayed for IEC 61869-2 protection CTs, class V-kn Knee point voltage according to standard. I-kn Knee point current according to standard. Saturated inductance.
  • Page 115 Peak instantaneous error at voltage E ε 1. If the CT Analyzer is not able to measure up to the actual value, the prefix ">" is displayed to indicate that the measurement value is larger than the displayed value. 2. If parameter "Spec." is set to "by Duty" in the CT-Object card (see page 93), no calculation is...

  • Page 116: Excitation Graph

    CT Analyzer User Manual 6.6.4 Excitation Graph The excitation graph page shows the graph calculated from the test results. To display the excitation graph, press the Excit. Graph soft key in the Excitation card. The graph shows the r.m.s. terminal/core voltage over the r.m.s./peak current depending on the selected standard.
  • Page 117 The CT Analyzer Test Cards Switches off the display of values on the bottom right of the diagram. If you have switched off the values, this soft key changes to Text On to switch the values display on again. Closes the excitation graph and brings you back to the Excitation card.
  • Page 118 CT Analyzer User Manual By pressing one of these soft keys you can display the measured excitation graph and knee point as defined in the respective standard. IEEE C57.13 displays the knee point for the 45° tangent. After pressing this soft key, its labeling changes to IEEE C57.13 (30°) to enable the display of the knee point for the 30°...

  • Page 119: Accuracy Limiting Error Graph

    Moves the cursor to that point on the error graph that corresponds to the nominal burden value defined in the "VA" field of the CT-Object card (value entered by the user or determined by the CT Analyzer). Moves the cursor to that point on the error graph that corresponds to the operating burden value defined in the "Burden"...
  • Page 120 CT Analyzer User Manual Viewing the measured values for different points on the graph By default, the cursor is positioned to the nominal burden values after opening this page. To select a specific point on the graph: • Select the desired edit field "K-Value" or "Burden" using the cursor keys and enter the desired value using the keyboard.

  • Page 121: Ratio Card

    The CT Analyzer Test Cards Ratio Card The Ratio card is only available if it is enabled in the Select Cards page (Default Test Settings or Select Cards soft key in the CT-Object card). The ratio test measures the current ratio of the CT considering the operating burden (parameter "Burden"...

  • Page 122: Available Soft Keys

    CT Analyzer User Manual 6.7.1 Available Soft Keys Displays the results related to the operating burden of the CT. Displays the results related to the nominal burden of the CT. Displays the ratio table (refer to section 6.7.4 on page 122 and 6.7.5 on page 123).

  • Page 123: Test Results

    The CT Analyzer Test Cards 6.7.3 Test Results The following test results are displayed in the lower part of the Ratio card. In addition to the results displayed in the Ratio card you can view the ratio and phase table pages described in section 6.7.4 on page 122 and 6.7.5 on page 123.

  • Page 124: Ratio Table And Phase Table For Iec 60044-1, Iec 60044-6 And Iec 61869-2

    CT Analyzer User Manual 6.7.4 Ratio Table and Phase Table for IEC 60044-1, IEC 60044-6 and IEC 61869-2 To display the ratio table or the phase table, press the Ratio Table or Phase Table soft key in the Ratio card.

  • Page 125: Ratio Table And Phase Table For Ieee C57.13

    The CT Analyzer Test Cards Note: Values that caused a failed assessment are highlighted by black background in the tables. Values without the prefix "!" have guaranteed accuracy. The accuracy of values marked with a "!" in the tables is reduced by factor 2.
  • Page 126 CT Analyzer User Manual Note: Values that caused a failed assessment are highlighted by black background in the tables. Values without the prefix "!" have guaranteed accuracy. The accuracy of values marked with a "!" in the tables is reduced by factor 2.

  • Page 127: Assessment Card

    The CT Analyzer Test Cards Assessment Card The Assessment card is only available if it is enabled in the Select Cards page (Default Test Card Selection or Select Cards soft key in the CT-Object card). Depending on the standard and the type of CT (protection or metering CT), the according parameters are listed.

  • Page 128: Assessed Parameters

    CT Analyzer User Manual 6.8.1 Assessed Parameters Parameters assessed for IEC 60044-1 Param. Description Parameter assessed for IEC 60044-1 protection CTs standard classes OMICRON extension 2P, 3P, 2PR, 3PR, 5P 10P 5PR 10PR PX 4P, 6P 4PR, 6PR Class Accuracy class according to standard.
  • Page 129 The CT Analyzer Test Cards Parameters assessed for IEC 60044-6 Parameter Description Parameter assessed for IEC 60044-6 Class Accuracy class according to standard. DC winding resistance. Δϕ Phase deviation. ε Current ratio error. εt Turns ratio error (included in class).
  • Page 130 CT Analyzer User Manual Parameters assessed for IEC 61869-2 Param. Description Parameter assessed for IEC 61869-2 protection CTs standard classes OMICRON extension 2P, 3P, 2PR, 3PR, 5P 10P 5PR 10PR PX PXR 4P, 6P 4PR, 6PR Class Accuracy class according to standard.
  • Page 131 The CT Analyzer Test Cards Param. Description Parameter assessed for IEC 61869-2 metering CTs 0.1, 0.2, 0.2s, 0.5, 0.5s, 1 3, 5 Class Accuracy class according to standard. Δϕ Phase deviation. ε Current ratio error. Instrument security factor (direct measurement method).

  • Page 132: Comment Card

    CT Analyzer User Manual Comment Card The Comment card is only available if it is enabled in the Select Cards page (Default Test Card Selection or Select Cards soft key in the CT-Object card). In the Comment card you can enter any text, e.g. additional notes regarding the current test.

  • Page 133: Ct Testing Using The Guesser Function

    Do not touch these taps! About the Guesser Function The guesser function of the CT Analyzer is intended as an aid for the user to find out single unknown name plate data of a CT, for example if parts of the CT’s name plate are unreadable.

  • Page 134: Setting Up And Connecting The Ct Analyzer

    CT Analyzer User Manual It is possible to configure the guesser function of the CT Analyzer in a way that it checks whether the user has entered all necessary values and data relevant for an automatic assessment prior to the test start. The respective parameters are then marked by a star ("*") in the CT-Object card.

  • Page 135: Running The Automatic Test

    CT Testing Using the Guesser Function Running the Automatic Test 1. After switching the CT Analyzer on or after initializing a new test from the main menu, the default CT-Object card is displayed. Figure 7-1 Empty CT-Object card after initializing a new test 2.

  • Page 136: After The Test Is Finished

    Warning: Never disconnect measurement leads while the red LED on the CT Analyzer is flashing. As long as the red LED is flashing, the output is active and lethal voltages can occur due to the high energy stored in external inductors.

  • Page 137: Using The Quick Test Feature

    OMICRON sales contact or the OMICRON office nearest you. If your CT Analyzer provides a vaild license for Quick Test, the functional scope described in this chapter is also available in the CTA Quick Test PC software included in the CT Analyzer PC Toolset.

  • Page 138: Safety Notes And Notes For Using Quick Test

    Warning: For VT ratio measurement, the CT Analyzer output has to be connected to the primary side of the VT. Connecting the CT Analyzer output to the secondary side of the VT by mistake will cause hazardous voltages on the...

  • Page 139: Introduction To Quick Test

    Using the Quick Test Feature Introduction to Quick Test Using Quick Test it is possible to use the CT Analyzer as a versatile multimeter with included power source or to perform polarity checks using the CPOL polarity checker from OMICRON.
  • Page 140 CT Analyzer User Manual The following measurement types are available in Quick Test. Meas. type Usage Advanced Provides complete multimeter measurement functionality and free adjustment of all measurement quantities, such as AC or DC signal output, voltage or current output, output frequency, measurement mode (DC, RMS or frequency- selective) for the input, etc.

  • Page 141: Performing Measurements With Quick Test

    150V with frequencies up to 4kHz. Advanced Caution: When using Quick Test, input "Sec" of the CT Analyzer is able to measure voltages up to 150V . Do not connect voltages above 150V or even mains voltages to the CT Analyzer inputs! This will damage the...
  • Page 142 Possible values: U (voltage) or I (current). Default: Voltage Warning: Feeding an inductance with DC current will charge the inductance. The CT Analyzer does not perform automatic discharge of the inductance. Risk of electric shock! Wait until the inductance has discharged completely before touching any connections or disconnecting the measurement leads of the CT Analyzer.
  • Page 143 R and L will prevent saturation of the connected CT. The output generator of the CT Analyzer then keeps the DC part of the output current at zero using a current regulator permanently running during the output of AC signals.
  • Page 144 CT Analyzer User Manual Parameter Description R, L Only available if Load is set to "on". Winding resistance (R) and unsaturated inductance (L) of the CT, used by the internal output regulator to prevent saturation of the connected CT (see "Load" above).
  • Page 145 Parallel or serial inductance or capacitance of the test object, calculated from the output signal and the voltage measured at input "Sec". The CT Analyzer automatically detects whether the test object is an inductance or a capacitance based on the phase angle. Frequency measured at input "Sec".
  • Page 146 CT Analyzer User Manual Soft key / Description result Crest Out, Crest factor of the output signal or the signal measured at input Crest Sec, sec or input prim. Crest Prim The crest factor is the peak/rms ratio of a waveform. For a sinusoidal waveform the crest factor is 1.414 (√2).

  • Page 147: Polarity Check

    (e.g., the connecting terminals of the burden Polarity Check wiring) for correct polarity. For this purpose, the CT Analyzer injects a signal with a special waveform similar to a saw-tooth signal with a different steepness for the rising and the falling slope.
  • Page 148 Voltage measured at input "Sec". The higher the resistance of the wiring checked or the current amplitude set on the CT Analyzer, the higher the terminal voltage generated by the injected current signal. This input is considered as the phase reference, therefore the phase is always 0.
  • Page 149 "Sec". Therefore, you should always connect this input when using the Polarity Check measurement type. The higher the resistance of the wiring checked (i.e., the burden wiring) or the current amplitude set on the CT Analyzer, the higher the terminal voltage generated by this current! Proceed as follows to perform a polarity check 1.
  • Page 150 OK, and lights up the red LED. Warning: If you detect a wrong polarity in the signal path, stop the measurement (see step 8) and turn off the CT Analyzer first. Only then disconnect the terminals. – If the CPOL does not detect any signal (for example, due to a too small signal magnitude), both LEDs light up at the same time.

  • Page 151: Ct Ratio Measurement

    CT Ratio Measurement Caution: CT ratio measurement using Quick Test is not a complete CT test! This measurement only determines the current ratio of CTs. The CT Analyzer does not perform automatic demagnetization after the measurement. This is a predefined measurement type, intended especially for the quick How to get there: measurement of CT ratios.
  • Page 152 CT Analyzer User Manual Parameter Description R, L Winding resistance (R) and unsaturated inductance (L) of the CT, used by the internal output regulator to prevent saturation of the connected CT (see Load above). Ω Possible values: 0 to 1000 or 0 to 1000H.

  • Page 153: Vt Ratio Measurement

    VT Ratio Measurement Warning: For VT ratio measurement, the CT Analyzer output has to be connected to the primary side of the VT. Connecting the CT Analyzer output to the secondary side of the VT by mistake will cause hazardous voltages on...
  • Page 154 Proceed as follows to perform a VT ratio measurement: 1. Connect the "Output" sockets and input "Sec" of the CT Analyzer to the primary side of the VT and input "Prim" of the CT Analyzer to the secondary winding of the VT (see Figure 8-12).
  • Page 155 CT-Quick test card with settings for VT ratio measurement 4. Start the measurement by pressing the key on the CT Analyzer or clicking the ON button on the VT Ratio tab of the CTA QuickTest software. The measured values are displayed and permanently updated as long as the measurement is active.

  • Page 156: Resistance Measurement

    Possible values: 0 to 10A. Default: 1.00A. Warning: Resistance measurement is performed with DC current. Feeding an inductance with DC current will charge the inductance. The CT Analyzer does not perform automatic discharge of the inductance. Risk of electric shock! Wait until the inductance has discharged completely before touching any connections or disconnecting the measurement leads of the CT Analyzer.
  • Page 157 Proceed as follows to perform winding resistance measurement on VTs: 1. Connect the "Output" sockets and input "Sec" of the CT Analyzer to the winding to be measured (see Figure 8-16). 2. Open the Quick Test measurement function on the CT Analyzer or start the CTA QuickTest PC tool from the CTA Start Page.

  • Page 158: Impedance Measurement

    CT Analyzer User Manual 5. Stop the measurement by pressing the key on the CT Analyzer again or clicking the OFF button on the Resistance tab of the CTA QuickTest software. Live display of winding resistance Figure 8-18 Results test card for VT winding resistance measurement...
  • Page 159 Using the Quick Test Feature Parameter Description Frequency of the output signal. Adjustable by the user. Possible values: 5.0 to 400.0Hz or soft keys 16.7Hz, 50Hz, 60Hz or 400Hz. Default: 50Hz The following values are displayed in the Results Impedance card: Value Description Output...

  • Page 160: Reactance Measurement

    CT Analyzer User Manual 8.10 Reactance Measurement This is a predefined measurement type, intended especially for the quick How to get there: measurement of reactances. Press the Main soft key in any test card To select the Reactance measurement type, use the...
  • Page 161 Serial inductance or capacitance of the test object, calculated from the measured values. The CT Analyzer automatically detects whether the test object is an inductance or a capacitance based on the phase angle. Note: The reactance measurement uses the serial equivalent circuit diagram for results calculation.
  • Page 162 CT Analyzer User Manual...

  • Page 163: Ct Analyzer Pc Toolset

    CT Analyzer PC Toolset CT Analyzer PC Toolset The CT Analyzer PC Toolset contains a set of PC software that is necessary and helpful for your work with the CT Analyzer on a PC. The following tools are installed with the CT Analyzer PC Toolset: •...

  • Page 164: The Cta Start Page

    2. Or double-click the CTA Start Page desktop icon. Figure 9-1 CTA Start Page In the CTA Start Page, click CT Analyzer Help to open the help system with detailed information about the software tools of the CT Analyzer PC Toolset.

  • Page 165: Technical Data

    Connector according to IEC 60320 Mains voltage 100 - 240V / 50/60Hz / 6A Instead of supplying the CT Analyzer from phase- neutral (L1-N, A-N), it may also be supplied from phase-phase (e.g. L1-L2, A-B). However, the nominal voltage must not exceed 240V...

  • Page 166: Winding Resistance Measurement Accuracy

    CT Analyzer User Manual Measurement input "Sec" Ω Input impedance 0 - 15V: 1M Ω Ω 15 - 150V: 500k to 1M , depending on the voltage. Input current is compensated by the device. Insulation Reinforced insulation (R) to all other circuits Measurement input "Prim"...
  • Page 167 Technical Data Values without the prefix "!" in the ratio table of the Ratio card have guaranteed accuracy. The accuracy of values marked with a "!" in the table is reduced by factor 2 since these values are not directly measured but calculated from the measured values instead.

  • Page 168: Compact Flash Card Interface

    As of serial number JHxxxx or newer, the CT Analyzer is equipped with a USB interface and a RS232 interface. Note: The user has to select the interface to be used in the CT Analyzer settings before connecting the CT Analyzer to a computer (refer to section 2.3 on page 23).

  • Page 169: Usb Interface

    Figure 10-2 Connection cable for RS232 remote control interface 10.7.2 USB Interface The USB interface can be used to connect the CT Analyzer to a computer. Communication via USB is considerably faster than communication via RS232. USB interface (type B connector)

  • Page 170: Shock And Vibration

    CT Analyzer User Manual 10.8.2 Shock and Vibration Dynamics Vibration Tested according to IEC 60068-2-6; frequency range 10 … 150 Hz; acceleration 2g continuous (20 m/s ); 20 cycles per axis Shock Tested according to IEC 60068-2-27 (operating mode); 15g / 11ms, half-sinusoid, 3 shocks in each axis 10.8.3...

  • Page 171: User Maintenance

    CT Analyzer. 3. Locate the blown fuse on the side panel of the CT Analyzer and replace it by an identical fuse type: T6.3H 250 V (6.3 Amps slow-acting high breaking capacity wire fuse 5 x 20mm).
  • Page 172 CT Analyzer User Manual...

  • Page 173: Error And Warning Messages

    No valid software in the device Flash memory or incorrect checksum. Solution: Insert a Compact Flash card with valid software (CTAnalyzer.bin) in the Omicron directory and switch the CT Analyzer off and on again. 002.xxx Error [002] Can't open file! Reason: The firmware cannot read the file CTAnalyzer.bin from the Compact Flash...
  • Page 174 Solution: Verify the wiring and repeat the test. If the error message is displayed repeatedly, it is currently not possible to test this CT using the CT Analyzer. 116.xxx Warning [116.xxx] Knee point too low! CTs with a knee point below 1 volt are not supported.
  • Page 175 Error and Warning Messages 201.xxx Warning [201.xxx] Check connection. Measured ratio > 50000:1. Reason: Measurement input "Prim" is possibly not connected properly. Solution: Check whether the primary side measurement input "Prim" is connected properly. 202.xxx Warning [202.xxx] Check connection. Polarity of input SEC and power output are not the same.
  • Page 176 CT Analyzer User Manual 210.xxx Warning [210.xxx] Permanent data overflow. Reason: Internal data buffer overflow. The data could not be fetched fast enough from the internal data buffer. Solution: Try to repeat the measurement. If this error occurs more frequently, you should contact your next OMICRON service center.
  • Page 177 Reason: No CT SB2 is connected when starting a multi-ratio measurement. Solution: Connect the CT SB2 to the CT Analyzer before starting a multi-ratio test. 401.xxx Warning [401.xxx] CT SB2 switch box is disconnected! Reason: The CT SB2 is not properly connected to the CT Analyzer.
  • Page 178 CT SB2 and restart your test. 411.xxx Warning [411.xxx] Firmware download to switch box failed! Error: SBErrNo Reason: CT SB2 firmware download failed. Solution: Ensure that the CT SB2 is connected to the CT Analyzer and repeat the firmware download to the CT SB2.
  • Page 179 CT Analyzer. Remove all connections to the CT SB2 and restart your Quick measurement on the CT Analyzer. 501.xxx No message displayed on the CT Analyzer. Message only displayed on remote PC connected to the CT Analyzer. Reason: The remote interface handler couldn't decipher the command.
  • Page 180 The file system sent an error message. You tried to open a "read only" file or a special directory. Solution: Access the Compact Flash card on a PC and remove the "read-only" file attribute. File attributes cannot be modified with the CT Analyzer. 803.xxx Warning [803.xxx] Flash card access error. File or folder already exists. Reason: The file system sent an error message.
  • Page 181 Error [820.xxx] Memory management error. Contact the next OMICRON service center. Reason: Memory management error. Solution: Switch the CT Analyzer off, wait a second then switch it on again. If this error occurs more frequently, you should contact your next OMICRON service center. 821.xxx Error [821.xxx] Could not update firmware.
  • Page 182 825.xxx Warning [825.xxx] Size of file [FileName] >= 1Mbyte. Reason: The size of the file copied to the CT Analyzer Compact Flash card or virtual disc is > 1 MB. Solution: Avoid transfer of large files > 1 MB to the CT Analyzer.
  • Page 183 Safety action: All measurements are stopped until reverse power is dissipated. Warning: Lethal voltages of up to many kV may occur. Do not disconnect any wires and do not switch off the CT Analyzer. Wait until the power is dissipated. 904.xxx Error [904.xxx] Power supply error.
  • Page 184 CT Analyzer User Manual 905.xxx Error [905.xxx] Over-temperature of power supply, wait until device has cooled down. Reason: Secondary side power supply has reached the warning temperature limit and entered save mode to cool down. Solution: When this error is acknowledged as long it is active, the popup window is closed and only the message in the status line remains active until the overtemperature disappears.
  • Page 185 Wait until the power is dissipated within the device and the error message disappears. Safety action: All measurements are stopped until reverse power is dissipated. 935.xxx Error [935.xxx] No valid CT Analyzer software. Insert a CF-Card with valid Software and press "Update Firmw.". Reason: Cannot find valid CT Analyzer software.
  • Page 186 CT Analyzer User Manual 940.xxx Warning [940.xxx] CMOS data block corrupt. Check all device settings. Press Clear Values to work with default values. Press OK to work with corrupt device settings. Reason: Device settings data block corrupt. Solution: Check all device settings.

  • Page 187: Omicron Service Centers

    OMICRON Service Centers OMICRON Service Centers Americas OMICRON electronics Corp. USA 3550 Willowbend Blvd. Houston, TX 77054, USA Phone: +1 713 830-4660 1 800-OMICRON Fax: +1 713 830-4661 techsupport@omicronusa.com www.omicronusa.com Asia – Pacific OMICRON electronics Asia Ltd. Suite 2006, 20/F, Tower 2 The Gateway, Harbour City Kowloon, Hong Kong S.A.R.
  • Page 188 CT Analyzer User Manual...

  • Page 189: Index

    166 dependency of test cards 70 computer requirements for CT Analyzer PC Toolset dimensions 168 disconnection 41 connecting the CT Analyzer to a PC 23 display contrast (setting) 67 connection 21 display overview 17 4-wire connection technique 42...
  • Page 190 113 gapped core, measurement 28 specific parameters in CT-Object card 98, 99 GIS (SF6) switch gear measurement 30 Impedance (Quick Test) 156 grounding terminal 13 inputs Guesser function 131 overview 15 technical data 163 installation CT Analyzer PC Toolset 161...
  • Page 191 163 CT Ratio meas. type 149 Min. VA at M cores Isn 5A 67 Impedance meas. type 156 minimum computer requirements for CT Analyzer PC introduction 137 Toolset 161 performing measurements 139 misc. settings (default settings) 68, 70 polarity check 145 Reactance meas.
  • Page 192 185 IEC 61869-2 122 symbols displayed in status line 17 ratio table for IEEE C57.13 123 system requirements for CT Analyzer PC Toolset 161 ratio measurement 54 ratio table accuracy of values 164 ratio table for IEC 60044-1, IEC 60044-6 &...
  • Page 193 Index selection 65 update 73 user maintenance 169 Y winding transformer measurement 33 version CT Analyzer software 76 hardware 76 language 76 VT Ratio (Quick Test) 151 VT ratio measurement (Quick Test), wiring 38 VT winding resistance measurement (Quick Test),...
  • Page 194 CT Analyzer User Manual...
  • Page 195 CT SB2 User Manual...
  • Page 196 CT SB2 User Manual Manual Version: CTSB2.AE.3...
  • Page 197 After the Test is Finished ......... . 30 Default Settings on the CT Analyzer for Multi-Ratio CT Testing ..33...
  • Page 198 CT SB2 User Manual CT Analyzer Test Cards for Multi-Ratio CT Testing ....35 CT-Object Card for Multi-Ratio CT Testing ......36 MR-Config.

  • Page 199: Preface

    Operator Qualifications and Safety Standards Working on high-voltage power equipment can be extremely dangerous. Testing with the CT Analyzer and the CT SB2 switch box should only be carried out by authorized and qualified personnel. Before starting to work, clearly establish the responsibilities.

  • Page 200: Conventions And Symbols Used

    Manual: Title Description CT Analyzer User Manual Contains information how to use and operate the CT Analyzer as well as safety instructions for working with the CT Analyzer. Help System for Contains detailed information about the CT Analyzer PC Toolset software tools provided with the CT Analyzer PC Toolset.

  • Page 201: Safety Rules

    GmbH before proceeding. The CT SB2 is designated for use with the CT Analyzer. Therefore, observe the safety rules both in this User Manual and in the CT Analyzer User Manual when working with the CT SB2 switch box. Maintenance and repair is only permitted by qualified experts either at the factory or certified external repair centers.

  • Page 202: Safe Operation

    Make sure that the terminals of the test object to be connected to the CT SB2 do not carry any voltage potential. During a test, the CT Analyzer (with the CT SB2 connected) is the only permitted power source for the test object.

  • Page 203: Disclaimer

    Safety Rules Disclaimer The CT SB2 is intended exclusively for the applications described in chapter 1 on page 11. Any other use is deemed not to be according to the regulations. If the CT SB2 is used in a manner not specified by the manufacturer, the protection provided by the CT SB2 may be impaired.
  • Page 204 CT SB2 User Manual...

  • Page 205: Introduction And Designated Use

    Introduction and Designated Use Introduction and Designated Use The CT SB2 switch box is an accessory for the CT Analyzer and therefore exclusively designated for use with the CT Analyzer. The CT SB2 is intended for the following applications: •...
  • Page 206 CT SB2 User Manual...

  • Page 207: Hardware

    CT ANALYZER bonding Measurement input for Input and output terminals for connector primary side of the CT. connection to the CT Analyzer measurement inputs and OUT: Generator output for generator output. primary winding resistance measurement. A green LED lights up when the LEDs output is active.
  • Page 208 (4mm socket combined with knurled Connection of the CT SB2 to the remote nut for clamp connection) control interface of the CT Analyzer. Figure 2-2 Side view to the CT SB2 with mains connection unit, PC and CTA interfaces, and equipotential bonding connector...

  • Page 209: Block Diagram (Simplified)

    Hardware Block Diagram (Simplified) BURDEN PRIM BURDEN TAPS Relays Relays Switching relays RS232 Control RS232 Mains Power Supply Figure 2-3 Simplified block diagram of the CT SB2...

  • Page 210: Ct Sb2 Accessories (Scope Of Delivery)

    Data connection cable cable, 0.3m (1ft) from the CTA interface on the CT SB2 to the remote control interface on the CT Analyzer 12 x clamp Clamps in 6 different colors according to the 12-pole test cable for connecting the test cable...
  • Page 211 Hardware Accessories Description 1 x Cable bag Bag for cables and accessories...
  • Page 212 CT SB2 User Manual...

  • Page 213: Measurement Setup

    If you do not want to perform burden or primary winding resistance measurement, you should preferably use the normal single-ratio CT test mode of the CT Analyzer without using the CT SB2.

  • Page 214: Connecting The Communication Link Between Ct Sb2 And Ct Analyzer

    Connecting the Communication Link Between CT SB2 and CT Analyzer CT Analyzer devices as of serial number JHxxxx or newer are equipped with a USB interface and a RS232 interface. You can use both interfaces alternatively to connect the CT Analyzer to a PC.

  • Page 215: Basic Measurement Setup For Multi-Ratio Ct Testing

    Figure 3-4 For information how to connect the communication link between the CT SB2 and the CT Analyzer, please refer to section 3.2 on page 20. Figure 3-2 Basic measurement setup for multi-ratio CT testing (6 tap CT,...

  • Page 216: Basic Measurement Setup For Single-Ratio Ct Testing

    CT test mode of the CT Analyzer without using the CT SB2. Remove the data connection cable from the remote control interface of the CT Analyzer if you do not use the CT SB2 for CT testing with the CT Analyzer.

  • Page 217: Additional Wiring For Burden Measurement

    Basic CT wiring, see Figure 3-2 or Figure 3-3 For information how to connect the communication link between the CT SB2 and the CT Analyzer, please refer to section 3.2 on page 20. Figure 3-4 Additional wiring required for burden measurement...

  • Page 218: Additional Wiring For Primary Winding Resistance Measurement

    Basic CT wiring, see Figure 3-2 or Figure 3-3 For information how to connect the communication link between the CT SB2 and the CT Analyzer, please refer to section 3.2 on page 20. Figure 3-5 Additional wiring required for primary winding resistance...

  • Page 219: Short Guide For Multi-Ratio Ct Testing Using The Ct Sb2

    Preparing the Test 1. Connect the CT SB2, the CT Analyzer and the CT under test as described in section 3.3 on page 21. 2. Switch the CT SB2 and the CT Analyzer on.
  • Page 220 MR-Config. card. Note: The default number of taps can be set in the device settings of the CT Analyzer, see chapter 5 on page 33. If the selected standard is not IEEE C57.13, enter the values for I and I manually.
  • Page 221 If the "Check "*" settings before start" option is enabled in the default test settings of the CT Analyzer, all parameters that are required for assessment are marked by a star "*" in the CT-Object card.
  • Page 222 X1 or the highest available tap is used as the common tap. The default common tap can be selected in the device settings of the CT Analyzer, see chapter 5 on page 33. Using the Show Inter Taps soft key you can display the intertap combinations instead of the tap combinations.
  • Page 223 Disabling unused tap combinations reduces the test duration. 4. Start the multi-ratio CT test by pressing the key on the CT Analyzer. The red LED on the CT Analyzer flashes to indicate that the CT test is running.

  • Page 224: Automatic Test Execution

    Automatic Test Execution After starting the multi-ratio CT test, the CT Analyzer first checks the communication with the CT SB2 via the serial interface. The CT Analyzer then checks the input/output wiring between the CT Analyzer and the CT SB2 and, prior to each measurement, the corresponding wiring from the CT SB2 to the test object required for this particular measurement.
  • Page 225 For a detailed description of this card, please refer to section 6.3 on page 44. The CT Analyzer calculates the results for the operating burden (parameter "Burden" in the CT-Object card) and for the nominal burden (parameter "VA" in the CT-Object card).
  • Page 226 CT SB2 User Manual...

  • Page 227: Default Settings On The Ct Analyzer For Multi-Ratio Ct Testing

    Default Settings on the CT Analyzer for Multi-Ratio CT Testing Default Settings on the CT Analyzer for Multi-Ratio CT Testing The CT Analyzer allows customization of the default settings for multi-ratio CT How to get there: testing using the CT SB2. These settings are defined using the Press the Main soft key in Select Startup Mode option in the Setting Menu of the CT Analyzer.
  • Page 228 X#, where # is the highest tap number available depending on the selected number of taps. The common tap defined here is used each time a new multi-ratio test is initialized by selecting "New MR-Test" from the main menu of the CT Analyzer.

  • Page 229: Ct Analyzer Test Cards For Multi-Ratio Ct Testing

    CT Analyzer Test Cards for Multi-Ratio CT Testing For multi-ratio CT testing using the CT SB2 switch box, the CT Analyzer provides two additional test cards: MR-Config. and MR-Results. These cards are only available if a multi-ratio CT test has been initialized by selecting "New MR-Test"...

  • Page 230: Ct-Object Card For Multi-Ratio Ct Testing

    If the selected standard is IEEE C57.13 and the "Number of Taps" is set to 3 or 5 in the MR-Config. card, the CT Analyzer offers soft keys with predefined ratios for 3-tap or 5-tap CTs when the "I-pn" field is selected with the cursor (see Figure 6-2).
  • Page 231 If the "Check "*" settings before start" option is enabled in the default test settings of the CT Analyzer, all parameters that are required for assessment are marked by a star "*" in the CT- Object card.

  • Page 232: Mr-Config. Card

    CT SB2 User Manual MR-Config. Card Use the MR-Config. card to configure the multi-ratio CT test. In this card, set • the number of taps available on the CT, • the "tap in use", i.e., the tap combination (ratio) which is actually used and connected to the operating burden during operation of the CT, •...

  • Page 233: Available Soft Keys

    CT Analyzer Test Cards for Multi-Ratio CT Testing 6.2.1 Available Soft Keys The following soft keys are available if the MR-Config. card is selected but not in edit mode (the card’s tab is highlighted as shown in Figure 6-3): By default, the table in the MR-Config. card displays the nominal burden values.

  • Page 234: Parameters And Settings Used Or Determined During The Test

    Possible values: Soft keys No. Taps 2, No. Taps 3, No. Taps 4, No. Taps 5 or No. Taps 6. If the number of taps selected is 5 or 3, the CT Analyzer offers soft keys with predefined CT ratios when the "I-pn"...
  • Page 235 If a predefined multi-ratio scheme has been selected in the CT-Object card using the soft keys (see ”I-pn” on page 36), the CT Analyzer automatically enters the nominal CT ratios for all tap combinations according to this scheme. The ratios of the intertap combinations (e.g. X2-X4) are calculated from the tap combinations and cannot be changed by the user.
  • Page 236 6-3 on page 38). The nominal burden (VA) automatically assigned by the CT Analyzer can be changed manually by the user for all tap and intertap combinations except the full tap combination. The cos ϕ cannot be changed by the user.
  • Page 237 CT Analyzer Test Cards for Multi-Ratio CT Testing Parameter Description Test In this column, select the tap combinations you actually want to measure during the multi-ratio CT test. Select or deselect each single tap combination individually using the Enable and Disable soft keys. It is not possible to disable the full tap combination.

  • Page 238: Mr-Results Card

    CT SB2 User Manual MR-Results Card After the multi-ratio CT test is finished, the MR-Results card shows the measurement results for each enabled tap combination and/or intertap combination. If necessary, use the cursor keys to scroll the display. Figure 6-4 MR-Results card with measurement results: Page for ratio results (left) and page for excitation results (right) The MR-Results card can be switched to display...

  • Page 239: Test Results

    CT Analyzer Test Cards for Multi-Ratio CT Testing By default, the results are displayed for the nominal burden values. Use the Results with Op. Burden soft key to display the results for the operating burden instead. The operating burden is the same for all tap combinations.
  • Page 240 Such simulations can be done at any time after the test is finished if the corresponding test file containing the measurement results of the CT is loaded in the CT Analyzer. Ratio results or excitation results The measurement results are displayed on two different pages (see Figure 6-4 on page 44).

  • Page 241: Resistance, Excitation And Ratio Card For Multi-Ratio Ct Testing

    CT Analyzer Test Cards for Multi-Ratio CT Testing Parameter Description Vb (V) The result displayed in this column depends on the standard selected in the CT-Object card and the type of CT. (IEEE C57.13, protection CTs only): Rated secondary terminal voltage for protection CTs.
  • Page 242 CT SB2 User Manual...

  • Page 243: Technical Data

    The PC interface of the CT SB2 switch box is exclusively intended to connect the CT SB2 to a computer (e.g. running the CT Analyzer PC Toolset software). The CTA interface of the CT SB2 switch box is exclusively intended to connect the CT SB2 to a CT Analyzer.
  • Page 244 CTA interface on the CT SB2 9-pole (DB9) null modem or crossover cable, 2 x female Connections required: 1 2 3 4 5 6 7 8 shield 1 2 3 4 5 6 7 8 shield Figure 7-3 Connection cable CT SB2 to CT Analyzer...

  • Page 245: Environmental Conditions

    Technical Data Environmental Conditions 7.3.1 Climate Climate Operating temperature –10 … +50 °C (14 … 122 °F) Storage and transportation –20 … +70 °C (–4 … 158 °F) Max. altitude 2000m Humidity 5 … 95% relative humidity, non-condensing Tested acc. to IEC 60068-2-78, Cab, Damp Heat: Temp.

  • Page 246: Safety Standards, Electromagnetic Compatibility (Emc)

    CT SB2 User Manual 7.3.4 Safety Standards, Electromagnetic Compatibility (EMC) CE Conformity, Requirements The product adheres to the specifications of the guidelines of the Council of the European Community for meeting the requirements of the member states regarding the electromagnetic compatibility (EMC) Directive 2004/108/EC and the low-voltage Directive 2006/95/EC.

  • Page 247: User Maintenance

    CT SB2. 3. Disconnect the CT SB2 from the CT Analyzer and, if applicable, from the computer. 4. Locate the blown fuse on the side panel of the CT SB2 and replace it by an identical fuse type: T2.0A H 250V (2.0 Amps slow-acting high breaking...
  • Page 248 CT SB2 User Manual...

  • Page 249: Error And Warning Messages For The Ct Sb2

    Error and Warning Messages for the CT SB2 Error and Warning Messages for the CT SB2 The CT SB2-specific error and warning messages of the CT Analyzer are listed in chapter "Error and Warning Messages" in the CT Analyzer User Manual.
  • Page 250 CT SB2 User Manual...

  • Page 251: Omicron Service Centers

    OMICRON Service Centers OMICRON Service Centers Americas OMICRON electronics Corp. USA 3550 Willowbend Blvd. Houston, TX 77054, USA Phone: +1 713 830-4660 1 800-OMICRON Fax: +1 713 830-4661 techsupport@omicronusa.com www.omicronusa.com Asia – Pacific OMICRON electronics Asia Ltd. Suite 2006, 20/F, Tower 2 The Gateway, Harbour City Kowloon, Hong Kong S.A.R.
  • Page 252 CT SB2 User Manual...

  • Page 253: Index

    49 CT-Object card 36 maintenance 53 measurement setup burden measurement 23 general notes 19 default settings on CT Analyzer 33 multi-ratio CT testing 21 designated use 11 primary winding resistance measurement 24 dimensions 51 single-ratio CT testing 22 MR-Config.
  • Page 254 CT SB2 User Manual PC interface 14 power supply 7, 49 primary winding resistance measurement measurement setup 24 Ratio card 47 related documents 6 replacing fuse 53 Resistance card 47 safety power supply 7 safe operation 8 safety rules 7 safety standards 5, 52 scope of delivery 16 shock and vibration conditions 51...

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