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Version 3.03

WR14 / WR50-12/13 Winding Resistance Meter Instruction Manual

104

MEASURING HIGH- AND LOW- VOLTAGE SIDES IN SERIES

It makes sense to measure the high voltage side in series to the low voltage side to magnetize the
transformer faster. Always select the 2 windings that are on the same part of the core in the same
current direction. In the following table you will find examples of transformer connection schemes for
injecting test current and measuring 2 windings simultaneously:

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Summary of Contents for WR14

Page 1: ...WR50 12 13 WINDING RESISTANCE METERS RAYTECH USA INC 118 SOUTH 2ND STREET PERKASIE PA 18944 USA T 267 404 2676 F 267 404 2685 WWW RAYTECHUSA COM VERSION 3 03 WR14 15A WINDING RESISTANCE METER WR50 12 13 50A WINDING RESISTANCE METER ...

Page 2: ...es 12 Selection of the Proper Current Range 14 Connection to the Test Object 14 Single Phase Transformer Vector Group 0 15 Three Phase Transformer Δ Δ Vector Group 0 16 Three Phase Transformer Δ Y One LV Winding 17 Three Phase Transformer Δ Y Two LV Winding 18 Operation Elements for field units 19 WR50 Front Panel Overview 19 WR50 Control Elements and Connections 19 Fuse Mains Input and Switch 19 ...

Page 3: ...rating Menu 23 Menu Structure Without Using Profiles 25 Menu Structure Using Profiles 26 Introduction to Transformer Profiles and Data Structure 27 Main Menu 29 Main Menu Screen 29 Start 31 Store 31 Stop 31 Demag 32 Setup 33 Results 52 Profile 56 Options 64 Temperature Measurement 64 Heat Run Test Software 65 Introduction 65 Measurement with Interval Mode for HRT 66 Analyzing the HRT Results 68 Ba...

Page 4: ... T Base Pro 92 Components of T Base Pro 92 T Base Pro Totally FREE 92 Create your Add On with T Base SDK 92 T Base Pro Remote Option for Raytech Devices 93 Proprietary Add On Sequence 93 Proprietary Add On Remote I O to External Software 93 Graphical User Interface 94 USB Driver for T Base Pro 95 Software Development Kit SDK 96 Service Mode 97 Calibrate Touchscreen 97 Show Ground Warning 98 CSV Se...

Page 5: ... the Same Time 107 Demagnetizing 109 Energizing Magnetized Transformers 109 Conclusion 109 Consequences of Energizing a Magnetized Transformer 109 Procedure for Eliminating the Magnetized State of a Transformer 110 Parameters for Demagnetizing 110 Multiplexer 111 Error Messages 112 Trouble Shooting 114 Warranty Conditions 116 Limitation of Warranty 117 Arbitration 117 Contact Information 118 ...

Page 6: ...nd 47 63Hz with automatic ranging GROUND THE INSTRUMENT The power cord supplied with the equipment must be connected an electrical receptacle with an electrically grounded terminal Earthed Ground To minimize shock hazard the Ground Terminal on the instrument must be properly connected to an Earth grounded point In many cases the quality of the safety ground terminal provided by the power cord does...

Page 7: ... Instrument Cable Bag Current Cables Jumper Cable s Power Cord 5 Printer Refill Rolls Potential Cables Channel 1 Potential Cables Channel 2 Potential Cables Channel 3 WR50 13 only USB Memory Stick Instruction Manual If any of the above items are missing or damaged contact your local representative or Raytech USA immediately Optional test leads may be ordered other than shown ...

Page 8: ...t Cables Jumper Cable s Power Cord 5 Printer Refill Rolls Potential Cables Channel 1 Potential Cables Channel 2 USB Memory Stick Instruction Manual If any of the above items are missing or damaged contact your local representative or Raytech USA immediately Optional test leads may be ordered other than shown ...

Page 9: ...15A Operation The WR series of instruments apply a present current level selected by the user from 0 025A to 100A The 50V1 power source quickly charges the load and the results of the test are displayed within a few seconds automatically The results are reported on the easy to read color LCD display and can be stored or printed Compact Design The WR50 and the WR14 series of instruments are availab...

Page 10: ...g system to dissipate internal temperatures Automatic shut off for over temperature condition Color LCD with backlighting and touch screen Panel mounted Emergency Stop Switch Mounted in rugged case for field testing Fastest discharge time in the market 5 Year standard warranty SYSTEM DETAILS SYSTEM CHECK The instruments are line operated2 The systems are designed to be used with AC Voltage power s...

Page 11: ...aster than any other system on the market If a cable happens to fall off during test the system will STILL discharge the test object safely with the automatic Constant Power Discharge Circuit The Potential Test Leads are part of the safety circuit and have the ability to discharge a transformer should one of the current leads become detached WARNING Do not use potential cables with smaller gauge c...

Page 12: ...p 2 Select the Test Current press Range or Setup Range Press OK 3 Press the Start button 4 The results will be displayed Press Stop 5 The Safe indicator will show green WARNING Wait until the green light shows Safe before handling the cables For examples of transformer connections see the next pages 3 The checkbox for Use Profiles is not selected in the Setup under General ...

Page 13: ...STRUMENT OPERATION USING PROFILES 1 Power on the instrument Press Setup 2 On the General Tab check Use Profiles and touch OK 3 Touch Profile 4 Touch New 5 Touch New Transformer 6 Define new Transformer parameters by selecting the symbols at the bottom of the screen then touch Go ...

Page 14: ...ditional Data and touch Back 8 Touch Caption or the blue area above the Result to change 9 Choose a Caption 10 and touch OK 11 Start a measurement as usual WARNING Wait until the green light shows Safe before handling the cables For examples of transformer connections see the next pages ...

Page 15: ... check the winding schematic on the nameplate and trace the current path through the windings You can save time if you measure the high voltage side in series with the low voltage side from the same magnetic core Because there are more turns on the high voltage side you ll reach saturation flux in the core much faster This helps to stabilize the measurement and saves time The potential leads must ...

Page 16: ...15 WR14 WR50 12 13 Winding Resistance Meter Instruction Manual Version 3 03 SINGLE PHASE TRANSFORMER VECTOR GROUP 0 Measurement of HV and LV Winding ...

Page 17: ...Version 3 03 WR14 WR50 12 13 Winding Resistance Meter Instruction Manual 16 THREE PHASE TRANSFORMER Δ Δ VECTOR GROUP 0 Measurement of HV and LV Winding ...

Page 18: ...17 WR14 WR50 12 13 Winding Resistance Meter Instruction Manual Version 3 03 THREE PHASE TRANSFORMER Δ Y ONE LV WINDING Measurement of one LV Winding ...

Page 19: ...Version 3 03 WR14 WR50 12 13 Winding Resistance Meter Instruction Manual 18 THREE PHASE TRANSFORMER Δ Y TWO LV WINDING Measurement of two LV Winding ...

Page 20: ... remain in a safe mode state THERMAL PRINTER Allows the user to quickly get results on paper by using the built in thermal printer The printer uses thermal heat transfer technology Therefore there are no ink cartridges required or printer heads Special thermal paper is required for the printer to operate properly 4 This illustrates a WR50 12 2 channel instrument the WR50 13 has a 3rd channel 1 Fus...

Page 21: ...nect positive and negative potential cables for each channel to the test object Channel 3 only on WR50 13 CURRENT RECEPTACLE Connect positive and negative current cables for each channel to the test object EXTERNAL This port is used for an external warning device See the chapter on interfaces for more details GROUND TERMINAL Use this terminal to connect an additional ground line even if your mains...

Page 22: ...RINTER Allows the user to quickly get results on paper by using the built in thermal printer The printer uses thermal heat transfer technology Therefore there are no ink cartridges required or printer heads Special thermal paper is required for the printer to operate properly DISPLAY WITH TOUCH PANEL The instrument can be easily manipulated and fully controlled by the touch screen panel If preferr...

Page 23: ... 2021N 26001 POTENTIAL RECEPTACLE Connect positive and negative potential cables for each channel to the test object CURRENT RECEPTACLE Connect positive and negative current cables for each channel to the test object SAFETY INDICATOR Green Light on System is in safe standby mode Ready for handling test leads and connections Red Light on Unsafe mode Do NOT remove any cables There is current flowing...

Page 24: ... switch between the Standard mode and the Profiles mode press Setup and select the tab General The following screen will appear where you can enable Use Profiles The difference between Standard mode and the Use Profiles mode is how you ultimately store your result Standard mode is for acquiring the measurement values of Resistance organized by date and time and the Results button appears on the ma...

Page 25: ...al 24 Profiles mode is for assigning the results to a transformer Profile When Profiles mode is selected the main measurement screen will display Profile in the lower right of the main screen instead of Results For more details see Menu Structure Using Profiles on page 26 ...

Page 26: ...les mode turn off the Profiles mode in the Setup menu by unchecking the check box shown in Operating Menu on page 23 The results will be simply organized and saved by date and time without any transformer information Standard mode Main Menu Start Store Timer Demag Setup General Config Mode Range Temp Corr Results Details Diagram Delete Print Esc ...

Page 27: ...nly available if a USB Key is connected to the instrument To use the Profiles mode as described in this chapter turn it on in the Setup menu by selecting the check box shown in Operating Menu on page 24 Main Menu Start Store Timer Demag Setup General Config Mode Range Temp Corr Profile Active Intern USB Key ...

Page 28: ...can be directly attached to this record file Manually logging storing and sorting measurements will not be necessary once a Profile is created The Profile record of a transformer contains the general header information and an attached result contains the measurements of the transformer Or to define it more exactly A transformer profile contains Number of winding systems Type of winding systems Con...

Page 29: ...om the archive each time a measurement was required and done In the example above it is the 1st of September The transformer Profile is loaded made active and a measurement is done The new measurement data was saved and stored linked with the transformer Profile Thus creating a history for this particular transformer Transformer Profile Header Measurement 1 1 June 2010 Measurement 2 1 July 2010 Me...

Page 30: ...ected Current is applied Stop Stops the measurement DO NOT disconnect the measuring cables BEFORE the Green light is on and the indication Safe appears This button is active when Current is on Start is active when Current is off Store Stores the results while the measuring Current is on Demag Demagnetizes the core of a test object See pages 32 and 109 Setup Goes directly to the Setup Menu See page...

Page 31: ...cting the small box next to caption H1 H2 X1 X2 Enable or Disable measuring channel 2 by selecting the small box next to caption X1 X2 Status Shows the measurement parameters Temp Correction Shows the temperature parameters Temperature variables can be modified by pressing the Setup Button or directly in the text C See page 49 ...

Page 32: ...ed current Maximum current is shown on the Range Status bar STORE Press Store Instrument stores the value shown in the Display R1 R2 The measurement doesn t stop STOP Press Stop Instrument stops the measurement and begins the discharge process DO NOT disconnect the measuring cables until the green light is on and the indication for Safe mode appears ...

Page 33: ...object e g transformer core The Demag button appears after measurement is finished Press Demag Select the demagnetizing current which is usually the same current as the test current and then press start The Demagnetizing procedure runs automatically For a technical description of the demagnetizing feature see Demagnetizing on page 109 ...

Page 34: ...n modification and setting of the General Instrument parameters Config This menu allows the changing of the caption of the channels If you use profiles you can select the windings you would like to measure Also if a multiplexer is selected it will automatically control the system after this selection is made Mode This screen allows the selection and setting of the measurement mode single continuou...

Page 35: ...e Cursor Useful if operating with a USB Interface mouse The mouse cursor appears automatically after the USB mouse is connected You can control the instrument with a USB mouse track ball and or keyboard Use Profiles This allows operation of or access to transformer profiles For more information see Menu Structure Using Profiles on page 26 or Menu Structure Without Using Profiles on page 25 ...

Page 36: ...by selecting appropriate colors for each Default A Black and white screen Default B Colored screen Black and white may be selected on certain outdoor conditions For example in bright sun light Select the corresponding color button to change the color Palette Choose a color by selecting a predefined color available User Defined Colors Choose a color by manually adjusting the color select bar ...

Page 37: ... Instruction Manual 36 Length Correction Change the measuring unit from Ohm to Ohm Length The test results are then corrected to the selected display method The length of the test object is predefined by the customer Enter the length of the test specimen ...

Page 38: ... shows the validity of the license for the use of the instrument the Heat Run Test TBase Remote and TBase Sequence Softwares If there is no valid license status displayed contact your local representative or Raytech To modify or extend the license enter a new license code The license code is generated by Raytech ...

Page 39: ...ew Firmware zip file onto your USB key on the root directory Not into a sub directory and DO NOT Unzip it Connect the USB key to the instrument and press install The system will detect and automatically install the new firmware and restart the system Language The selection of language for the operating menu can be made Restart the instrument to activate the desired language selected ...

Page 40: ...ngs Adjustment of the internal clock can be made Date By pressing the arrow the calendar will be displayed Select the date by pressing on the actual day Time Select hour minute second by highlighting the numbers in the clock Pressing the arrows will increase or decrease the time settings ...

Page 41: ...ual 40 About Shows the Firmware Version and Serial Number of the instrument USB Printer Certain external USB Printers can be connected Select the desired printer to print results Printers not listed are not supported For more information see USB Printer Info on page 103 ...

Page 42: ...rvice Mode There are several embedded codes to allow different settings e g calibrate the touchscreen activate the USB driver and so on For more information see Service Mode on page 97 The Service Mode has a limited access Enter the corresponding code or exit directly by pressing ...

Page 43: ...elected or not For more information about using Profiles or to deactivate Profiles see Operating Menu on page 23 With Profiles Deactivated6 In the tab Config you can change the name Caption of the measurement channels Click on the white field to change the name Caption of the measurement channels Enter a name 6 Do not select Use Profiles in the Setup under General ...

Page 44: ...y useful if utilizing a Raytech multiplexer which will automatically set the appropriate relay Thus with a multiplexer you connect the measurement cables to a Transformer only once and all measurements are completed without changing any cables WS Select the Winding System 1 Primary 2 Secondary or 3 Tertiary side of the Transformer The configuration of the appropriate winding can be made Caption Se...

Page 45: ...Version 3 03 WR14 WR50 12 13 Winding Resistance Meter Instruction Manual 44 Tap If the transformer has Taps select the Tap to be measured ...

Page 46: ...s of time Continuous Performs continuous measurement until the measurement is stopped by the user Quality Assistant If the result is within the selected parameters a green light in the main screen will illuminate and indicate this condition If the result is out of the selected parameters a red light in the main screen will illuminate and indicate this condition If the selected conditions are almos...

Page 47: ...en the system halts and discharges the Transformer Fix Interval Time Selects the interval time from Start Time instead of from the 1st measurement point e g If the Interval Time is set to 10 seconds and the first measurement is taken at 27 seconds the system stores results at 27 37 47 seconds if the check box is not checked However if the check box is checked the results will be taken and stored a...

Page 48: ...ult is out of the selected parameters a red light in the main screen will indicate this condition No results are stored If the selected conditions are almost met a yellow light in the main screen will illuminate and indicate this condition No results are stored Auto Print Results8 If this feature is selected the instrument will also output to a connected printer when the measurements are stored Au...

Page 49: ...uto Close Setup Closes the Setup Window after the Current Range selection is made without pressing OK For adjusting the User Settings Press Set Adjust all 3 settings by moving the cursor left or right to the desired Current level Press OK when finished 9 The maximum current of the WR50 is 50A The maximum current of the WR14 is 15A ...

Page 50: ...ed to Channels This allows the user to select which measurement channel temperature probe or external temperature meter that the temperature correction is applied to If the required selection is more than one channel then the average value of the selected measurement channels is calculated Ext Manual input of an external measured temperature For example an external temperature meter Example for ca...

Page 51: ... was is measured Tk 234 5 for copper 225 0 for aluminum aluminum may be as high as 240 Alternative Correction with alpha25 to calculate Tk with the formula 𝑇𝑘 1 𝑎𝑙𝑝ℎ𝑎25 25 When temperature correction is activated the Main Test Screen appears as below The T in the measuring channel box shows that the displayed resistance value is corrected In this example it is corrected to 25 C using Tk of Copper ...

Page 52: ...during the measurement The crossed T shows that the displayed resistance value is NOT corrected The corrected AND the uncorrected values are stored in memory whether or not the correction is activated in the display If the display shows a crossed Red T the result is not corrected because a temperature probe is missing or not recognized by the system ...

Page 53: ...ton to view results in Standard mode If Profiles mode has been turned on then the Results button on the main screen changes to Profile The Profile results can be found under the tabs Profile Info Results Shows the overview of the measurements which are sorted by Date Time You can select multiple results 10 See Operating Menu on page 23 for instructions regarding how you can select it ...

Page 54: ...electing Header Caption This is the caption name of the measurement channel Rmeas This is the measurement Result without a temperature correction Rcorr This is the temperature corrected measurement result T1 T3 The temperature of the probes Text Manual input of temperature value measured with an external temperature meter Scroll to the right to view additional details Itest The measurement current...

Page 55: ...Heat Run Test For an explanation see Heat Run Test Software on page 65 The license code for the Heat Run Test is available from Raytech or a Raytech representative Print Prints the graph on the panel mount internal Printer Save12 Press Save and the graph will be stored on the USB Key as a gif file For more information see page 70 Esc Returns to the result details 11 Only available if the diagram i...

Page 56: ...orted Press Print to print the results Press Export CSV to export the data in a csv file If you choose Export CSV the selected data will be exported in a CSV file that is named with the serial number of the instrument and the date and time You can locate the file in the directory Raytech EXPORT on the USB Key To select the CSV Separator see CSV Separator on page 99 Esc Esc returns to the main scre...

Page 57: ...ofiles NOTE For an introduction to Transformer Profiles and Data Structure see page 27 You can switch between the Active profile Internal profiles stored internally on the instrument or profiles stored on a USB Key This is an example of the Active transformer Profile This is an example of Profiles stored on a USB Key 13 Use Profile section see Operating Menu on page 23 ...

Page 58: ...ve Profile Select New Transformer First select the configuration of the Primary winding of the transformer Choose the corresponding configuration of your transformer s Primary side from the Setup menu shown below After selection the instrument will display the Primary configuration in the highlighted box and automatically move to the next highlighted box to select the Secondary winding of the tran...

Page 59: ...llow the setting of the number of tap changer position steps Use the arrows or to increase or decrease first and last tap steps The First Tap setting 2 shown Lower Taps The Last Tap setting 5 shown Upper Taps The total number of Taps selected will be displayed above OK Confirm with OK to set e g 8 Taps View the number of Taps in this Transformer setup screen Your Transformer may have Tap positions...

Page 60: ... parameters are complete press Go to create a new Profile To generate this transformer as a template press Temp For more information about templates see Working with Templates on page 61 Press Go to view the screen to fill in the data from the nameplate of the transformer The default Name is the date and the time This can be edited Select the field you would like to change edit and use the screen ...

Page 61: ... from Archive When preparing to test a transformer check to see if its Profile is already stored internally in the instrument or on a USB key memory stick Use Profiles must be selected in the General Tab under Setup The USB key tab will only be shown if a USB key is inserted in the instrument Touch the tap Intern or USB Key and select the transformer you would like to load The Profile name that is...

Page 62: ...plate review the instructions on making a Profile in Create a New Profile on page 57 However after all parameters have been entered press Temp instead of Go After creating a new Profile and pressing Temp rename the template with another name other than the date and the time which are displayed by default Edit any other information Type Location etc as required for the Template The new profile will...

Page 63: ...ay It is only possible to Clone a Profile that was saved as a Template Newly cloned Profiles cannot be cloned You will be asked to enter a new transformer name and then the serial number for the newly cloned Profile Enter the Transformer Name and then the Serial Number then touch Close to save the Profile After entering this information you have a new Profile to work with It s useful to use this s...

Page 64: ... Select Diagram to analyze the measurements graphically Displayed is a graph as a function of time e g cooling curve of a transformer With a Tap changer the curve is a function of the Taps In this example there are 3 Taps 14 14 F Tap is only available if you are working with profiles ...

Page 65: ...ture probes to be used for the purpose of recording temperatures Optional Part Number 2021N 26001 can be purchased for this purpose The temperature probe is mounted to a flexible cable that plugs into the rear panel of the WR instruments This option enables the user to record the ambient temperature and or the actual temperature of the device under test A set of three 3 temperature probes can be o...

Page 66: ...DUCTION The Heat Run Test HRT performs a measurement during the cooling curve of a transformer after the transformer has been heated The measurement is made in the interval15 mode without temperature correction In the Setup Menu the following settings must be made Activate Interval Mode and select the interval time Select the time in seconds between measuring points Interval Time and the number of...

Page 67: ...er can be halted at any time by pressing the button a second time Note The test current is NOT switched on at this time After starting the timer disconnect the power cables or heat source of the test object and connect the measurement cables of the instrument Measurement results should be obtained as quickly as possible After the measuring cables are attached to the transformer windings press STAR...

Page 68: ...monitors the measurements until the results are stable The results are then stored automatically Press the Stop Button at any time to halt the measurement After storing the last measurement the instrument turns off the output Current stops the measurement and automatically discharges the transformer until the test object is safe ...

Page 69: ...measurement results you would like to analyze Analyses of the recorded data is slightly different if Profiles mode has been used or not Profiles From the Main Screen select Profiles The Transformer Info The measurement number Result The measurement date Diagram No Profiles From the Main Screen select Results The measurement date Diagram Displayed on the screen are the selected results shown graphi...

Page 70: ...ion Model Exp Exponential or Linear After selecting the Model press Analyze The value and the graph of the approximation R t 0 is shown Linear Approximation R0 Winding Resistance at time t zero m Slew rate dr dt in min Cor Correlation of the approximation Exponential Approximation R0 Winding resistance at time t zero Rinf Winding resistance at time t tau Time constant Cor Correlation of the approx...

Page 71: ...the Save button to store the calculated values and Graph as a graphical interchange format file gif The values of the corresponding measurement are stored under Remarks Double click on the highlighted measurement to open a new window with the calculated results The gif file is attached to the measurement data If you export the data to a USB Key the file will be located in the directory RAYTECH DAT...

Page 72: ... the resistance value Rcold of the winding the corresponding temperature Tref and the temperature coefficient of the conductor The approximation and the values are shown as Temperature Linear Approximation T0 Temperature at time t zero m Slew rate dt dt in min Cor Correlation of the approximation Exponential Approximation T0 Temperature at time t zero R Temperature at time t tau Time constant Cor ...

Page 73: ... 3 03 WR14 WR50 12 13 Winding Resistance Meter Instruction Manual 72 Select Show Formula and you will see a window after the calculation with all results Selecting Show Formula displays the calculated results ...

Page 74: ...ition With a full Battery you are able to measure 200 single measurements at 15 Amperes Mains supply present A Mains plug connector symbol is shown inside the Battery and the green LED on the power switch is blinking This indicates that the system is connected to the mains Battery charging The area inside the Battery indicator moves from the left to the right with a blinking green LED on the Mains...

Page 75: ...e will be displayed If conducting a measurement and this message appears the measurement doesn t stop but you are not able to start a new measurement until the mains supply is connected Very Low Battery If the battery charge is extremely low the WR14 displays a second warning message and powers down the system until a mains supply is connected ...

Page 76: ... on the push pull principle It self locks when connected To disconnect the Plug type connector push in first then pull out Connectors that become dirty should be cleaned with industrial alcohol before connecting The Cable Extension Set for the WR100 12R consists of the following cables 10M Extensions for the Current Cables Positive and Negative 10M Extensions for the Potential Cables Channel 1 Pos...

Page 77: ...nected To disconnect the Plug type connector push in first then pull out Connectors that become dirty should be cleaned with industrial alcohol before connecting The Cable Extension Set for the WR100 13R consists of the following cables 10M Extensions for the Current Cables Positive and Negative 10M Extensions for the Potential Cables Channel 1 Positive and Negative 10M Extensions for the Potentia...

Page 78: ...on the push pull principle It self locks when connected To disconnect the Plug type connector push in first then pull out Connectors that become dirty should be cleaned with industrial alcohol before connecting The Cable Extension Set for the WR50 12R consists of the following cables 10M Extensions for the Current Cables Positive and Negative 10M Extensions for the Potential Cables Channel 1 Posit...

Page 79: ...nected To disconnect the Plug type connector push in first then pull out Connectors that become dirty should be cleaned with industrial alcohol before connecting The Cable Extension Set for the WR50 13R consists of the following cables 10M Extensions for the Current Cables Positive and Negative 10M Extensions for the Potential Cables Channel 1 Positive and Negative 10M Extensions for the Potential...

Page 80: ... standard cable set The Cable Extension Set for the WR14 R consists of the following cables 10M Extensions for the Current Cables Positive and Negative 10M Extensions for the Potential Cables Channel 1 Positive and Negative 10M Extensions for the Potential Cables Channel 2 Positive and Negative When ordering the optional 10M Cable Extension Set with a new system the standard 5M cable set is omitte...

Page 81: ...es up to 10 000 complete test results 0 00 μΩ to 100 kΩ 10 C to 60 C 14 F to 140 F 20 C to 70 C 4 F to 158 F Current Range Measuring Range Accuracy Resolution 30 50A 0 00μΩ 1 3Ω 0 1 Rdg 0 05μΩ 5 Digits or 0 05μΩ 15 30A 0 0μΩ 3 3Ω 0 1 Rdg 0 1μΩ 5 Digits or 0 1μΩ 8 15A 0 0000mΩ 6 3Ω 0 1 Rdg 0 2μΩ 5 Digits or 0 2μΩ 3 8A 0 0000mΩ 16 7Ω 0 1 Rdg 0 5μΩ 5 Digits or 0 5μΩ 1 3A 0 000mΩ 47 2Ω 0 1 Rdg 1μΩ 5 D...

Page 82: ...rocessor based system with internal storage for over 10 000 test results Data exchange via USB Key or USB RS Connection Printing and storing of test results while the test system is measuring Temperature channels with automatic resistance correction Automatic high efficiency cooling system to dissipate internal heat Automatic shut off for over temperature condition Simple to operate color LCD touc...

Page 83: ... x USB 2 0 1 host 1 device and 9 Pin RS 232 serial Stores up to 10 000 complete test results 0 00 μΩ to 100 kΩ 10 C to 60 C 14 F to 140 F 20 C to 70 C 4 F to 158 F Current Range Measuring Range Accuracy Resolution 10 15A 0 00μΩ 1Ω 0 1 Rdg 0 1μΩ 5 Digits or 0 05μΩ 5 10A 0 0μΩ 3Ω 0 1 Rdg 0 2μΩ 5 Digits or 0 1μΩ 1 5A 0 0000mΩ 15Ω 0 1 Rdg 0 5μΩ 5 Digits or 0 5μΩ 0 5 1A 0 000mΩ 30Ω 0 1 Rdg 2μΩ 5 Digits...

Page 84: ...tance from 0 00 μΩ 100 kΩ Demagnetizing Circuit Advanced design Microprocessor based system with internal storage for over 10 000 test results Temperature channels with automatic resistance correction Panel mounted Emergency Stop Switch Fully automatic cooling curve analysis option AHRT 01 Fast discharge with discharge indicator visible and audible indicator for discharge status Simple to operate ...

Page 85: ...on Manual 84 INTERFACES HARDWARE RS 232 1 x RS 232 9 Pin Pin 2 TxD WR Host Pin 3 RxD Host WR Pin 5 GND Interface Parameters fixed unchangeable Port RS 232 Baudrate 38400 Baud Databit 8 Bit Stopbits 1 Bit Parity No USB USB Master Standard 2 0 USB Slave Standard 2 0 ...

Page 86: ... Light or Beeper may be connected to pins 3 and 4 to indicate a Dangerous condition See Example for connecting an external warning device below Use the working contact between Pin 3 and Pin 4 maximum Load 240VAC 2A The contact is open when the system is Safe The contact is closed when the system is Unsafe Pins 1 and 2 on the Extern connector These pins are for Raytech Service use Do not connect an...

Page 87: ...he Extended Safety Circuit Type has 6 pins You can use pins 3 and 4 to connect an external Warning Light or Beeper to indicate a dangerous condition The function for these pins are the same as with the standard type see Standard Type on page 85 Pins 1 and 2 on the Extern connector These pins are for Raytech Service use Do not connect anything to these pins ...

Page 88: ...as been pressed Pin 5 and 6 must be closed with an external switch or shorting plug Install the shorting plug shown here to use the instrument without the extended safety circuit Pin 5 and Pin 6 are shorted together in the plug Extended Safety Circuit Type Connector with 6 pins Panelmount Connector on the instrument Lemo ERA 1E 304 CCL RAN 40802 Cablemount Connector Extern Lemo FFA 1E 306 CLAC60 R...

Page 89: ...tion Manual 88 APPENDIX APPENDIX MODEL WR14 WR50 12 13 WINDING RESISTANCE METERS RAYTECH USA INC 118 SOUTH 2ND STREET PERKASIE PA 18944 USA T 267 404 2676 F 267 404 2685 WWW RAYTECHUSA COM WR14 15A WINDING RESISTANCE METER WR50 12 13 50A WINDING RESISTANCE METER ...

Page 90: ... measuring results from devices by USB with a few clicks Generate transformer name plate data sets on your PC and export them to devices View measurement data in a table or diagram Control devices by remote option Generate save and print test reports Store all your data in one database organized by transformers not measuring method Use powerful search functions to find your measurements quickly Wo...

Page 91: ...ith remote control data exchange and analysis Pictured above is the Raytech Automatic Transformer Observing System called ATOS which is fully controlled by the T Base Pro software Add Ons complete the functionality to fit into a transformer manufacturing test flow It runs on a Windows based PC and is operated on an easy to use graphical user interface ...

Page 92: ...ase Pro creating transformer profiles and importing and exporting of measurements are accomplished much easier then manually performing these operations Powerful search functions and a modern graphical user interface support users in handling transformer profiles and measurements Test Reports are available in several output formats Complete automated transformer measurements are accomplished with ...

Page 93: ... FREE copy of the T Base Pro software at http TBase Raytech ch COMPONENTS OF T BASE PRO T BASE PRO TOTALLY FREE Import transformer name plate data and measuring results from devices via USB device USB key or RS 232 with a few clicks Generate transformer name plate data sets on your PC and export them to devices View measurement data in a table or diagram Generate save and print test reports Use po...

Page 94: ...s long as the license key has been entered and the devices are unlocked PROPRIETARY ADD ON SEQUENCE Sequence is an existing Add On to control Raytech devices and doing complete transformer measurements in a free programmable measuring process including winding resistance and turns ratio measurements Test procedures can be defined individually Remote Options needed for Raytech devices are included ...

Page 95: ...process will create a new ribbon tab in the ribbon menu at the top of the window The profile manager on the left side of the window shows all transformers with measurements stored in the database A hierarchic illustration helps to get a quick overview When a profile is selected on the right border in the profile manager the most important information about a transformer and its profile are display...

Page 96: ... do measurements With a few clicks a measurement is started and the results are displayed in the results section immediately Details about the device status and communication are shown in the status section In the screen example below a winding resistance meter is connected The meter status is safe and data exchange is listed in the console USB DRIVER FOR T BASE PRO The USB Drivers must be activat...

Page 97: ...stom Windows Application and Raytech instruments The SDK with native Raytech USB Driver for Windows provides the OS with full device functionality appearing to OS as a Raytech USB device This software can also be used without native Raytech USB drivers to control the device over the standard RS 232 Serial port It is a powerful tool to write easily customized Software to control the Raytech Instrum...

Page 98: ...t by pressing CALIBRATE TOUCHSCREEN The touch screen parameters can be calibrated by the end user Enter code 0000 and follow the on screen instructions as depicted below You will see the following screen Press and hold the stylus on the center of the target until the cross moves Repeat as the target moves around the screen If a keyboard is connected press Enter to accept the new parameters or Esc ...

Page 99: ...round warning message when the instrument is powered on by entering the Service Code 0200 Select Yes to enable the message Select No to disable the message If the ground warning message is enabled it will be displayed at every boot up of the instrument and the message must be acknowledged to continue 19 Only active in the WR14 ...

Page 100: ...ile20 you are able to change the separator You can set the CSV Separator with the following Service Codes CSV Separator Code 2010 CSV Separator Code 2011 CSV Separator t Code 2012 Example After entering the Code 2010 in the Service Mode the CSV Separator is 20 See Print Export on how to export the data to a csv file on page 55 ...

Page 101: ...ore information see Raytech T Base Pro on page 89 Enter the Code 2001 to activate the USB Driver for the T Base Pro For the changes to take effect power down and restart the system ACTIVESYNC FOR TOOLBOX Activate ActiveSync to work with the previous older version of Raytech Toolbox Software Enter the Code 2000 to activate ActiveSync For the changes to take effect power down and restart the system ...

Page 102: ...arameters Numeric Format of Numbers float C Language as decimal point Format of Strings all ASCII Characters from 0x20 to 0xff Standard Response Error Messages 1 Ok l 2 Syntax error 3 Out of range 4 Fail 5 Missing parameter 6 Too many parameter 7 Out of Range Meas 8 Internal Command successful Command unknown Parameter is out of allowed range Command is not allowed at this time Too less Parameters...

Page 103: ... Firmware 2 7 0 0 and later A description of all commands can be downloaded from the internet at http www raytechusa com There you will find the USB driver and an installation guide The USB driver installation is not necessary in order to use the RS 232 serial port for communication with the device ...

Page 104: ...ce Nearly every printer conforms as such with the exception of multifunction devices e g All in One Printers INTERFACE USB 2 0 SUGGESTED PRINTERS Ink Jet Canon iP90 Epson Stylus S20 HP Deskjet 6940 HP Deskjet H470B HP Deskjet H470WBT Epson Stylus Office B40W Laser Brother HL 5240 Tested Brother HL 2140 Brother HL 5240L HP Laserjet P1505N HP Laserjet P2055DN HP Color Laserjet CP2025N PocketJet 200 ...

Page 105: ...measure the high voltage side in series to the low voltage side to magnetize the transformer faster Always select the 2 windings that are on the same part of the core in the same current direction In the following table you will find examples of transformer connection schemes for injecting test current and measuring 2 windings simultaneously ...

Page 106: ...105 WR14 WR50 12 13 Winding Resistance Meter Instruction Manual Version 3 03 ...

Page 107: ...Version 3 03 WR14 WR50 12 13 Winding Resistance Meter Instruction Manual 106 The table is the ANSI standard You can change it e g to the IEC standard by substituting H1 to 1U H2 to 1V H3 to 1W ...

Page 108: ...onsidered for this test application NOTE Always use the 2 windings on the same core and connect them in the same current direction To find out the corresponding windings of a transformer you can use the table from the previous chapter Measuring High and Low Voltage side in Series on page 104 START MEASUREMENT Start the measurement on the high voltage side first When the current is flowing on the h...

Page 109: ...th the WR14 set to interval mode with a Current of 7A22 After the current is flowing on the high voltage side Start the measurement on the low voltage side with the WR50 set to interval mode with a current of 40A After the results are obtained stop the current on the low voltage side first WR50 and then stop the current on the high voltage side WR14 Now you can analyze the test results with the op...

Page 110: ...ent the voltage source sine wave crosses the zero line Transformer cores are also magnetized after having a Direct Current source flow in a winding For example the application of Direct Current when performing a Winding Resistance test After measuring the Winding Resistance the core is magnetized to its maximum hysteresis Both of these scenarios can leave the core in an unpredictable state which c...

Page 111: ...ne Fine High number of Demagnetization cycles Selected if Medium Demagnetization cycle mode did not fully De magnetize the transformer This mode takes several minutes to complete Superfine Ultra High number of Demagnetization cycles Selected if Fine Demagnetization cycle mode did not fully De magnetize the transformer This mode takes the longest to complete Note Running a Demagnetization mode twic...

Page 112: ...nding systems with one cabling sequence Many configurations are possible containing up to three Multiplexers up to three Winding Resistance Meters and a Turns Ratio Meter Control your Tap Changer with a powerful tap changer interface Operate all instruments on a touch screen or by remote control Get a customized complete solution containing WR TR and Multiplexers Ask Raytech for the ATOS Automatic...

Page 113: ...art a measurement Exit this message screen by touching OK The system will revert to a pretest or main screen similar to the one shown Because the emergency switch is still depressed you are not able to start a new measurement All other features of the system such as storing printing are still active Turn the Emergency Stop button clockwise to release 23 In case of Interlock Modification for extend...

Page 114: ...Meter Instruction Manual Version 3 03 Attempting to store results to the USB key without any device key USB key plugged into the WR instrument USB port Plug the USB key in and try again The following will appear The data can then be exported ...

Page 115: ...ialization 2 Check the fuses The fuses are located on the rear or the front panel of the instruments Touch Panel does not work Connect a USB mouse to the USB port and control the instrument with it The instrument will automatically display a cursor and everything can be done by mouse See Mouse Cursor on page 34 Try to recalibrate the touch panel See Calibrate Touchscreen on page 97 USB Memory Stic...

Page 116: ... or high interference load 5 Trying to measure the primary winding in series to the secondary winding See Measuring High and Low Voltage Side in Series on pages 104 Cannot switch off the WR14 Disconnect the power cable and press the Power switch for 15 seconds NOTE The WR series instruments are designed to be trouble free If problems or questions do arise please contact your nearest Representative...

Page 117: ... of the test equipment provided that the cause of the defect occurred prior to the time at which the risk was passed The purchaser is obligated to immediately notify Raytech USA Inc in writing of any defects of the supplied test equipment Raytech USA Inc must always be given the opportunity to rectify a defect within a reasonable amount of time The purchaser shall grant adequate amount of time tha...

Page 118: ...ts or improper site preparation Exclusive remedies provided herein are the customer s sole and exclusive remedies Raytech USA Inc shall not be liable for any damages resulting from the use of this equipment whether direct indirect special incidental or consequential damages or whether based on contract tort or any other legal theory NOTE No other warranty is expressed or implied ARBITRATION All di...

Page 119: ...Resistance Meter Instruction Manual 118 CONTACT INFORMATION Raytech USA Your Local Representative Raytech USA 118 S 2nd Street Perkasie PA 18944 Phone 267 404 2676 Fax 267 404 2685 Email Sales RaytechUSA com Website http www RaytechUSA com ...

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