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Conducting Surge tests

1.  Ensure that the 

Active Folder

 and 

Active Record

 are those that you want to use for the 

subsequent tests, and that the 

Configuration Options

 icon is set to 

Standalone.

Figure 22. Surge test start screen.

Basic Testing Procedures

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17

2.  Touching the 

Coil Mode Selection

 icon in the 

Mode Submenu

 brings up the popup menu 

shown below to select the mode needed. For this example, touch the 

Three-phase coil mode

 

icon.

3.  The 

Lead Selection

 icons default to coil No. 1 to start the test.

4.  As noted earlier, the operating voltage is the basis for the test voltage used during Surge 

testing. For this example, we continue to use the 480-volt motor with a maximum testing 
voltage of 2000 volts.

5.  Press and hold the 

Start (PTT)

 button. The following popup menu appears.

Figure 23. Coil Mode Selection popup menu.

Summary of Contents for Baker DX Series

Page 1: ...1 Bronze Way Dallas TX 75237 1019 USA T 1 800 723 2861 USA only T 1 214 333 3201 F 1 214 331 7399 E ussales megger com Megger AB Rinkebyvägen 19 Box 724 SE 182 17 DANDERYD T 08 510 195 00 E seinfo megger com Megger Baker Instruments 4812 McMurry Avenue Suite 100 Fort Collins CO 80525 USA T 1 970 282 1200 F 1 970 282 1010 E baker sales megger com E baker tech support megger com Manufacturing Sites ...

Page 2: ...Baker DX Series Static Motor Analyzer Quick Reference Guide Part number 71 031 EN V1 ...

Page 3: ...reserved No part of this manual may be copied by photographic or other means unless Megger has previously consented in writing The contents of this manual are subject to change without notice Megger can not be held responsible for technical or printing errors or defects in this manual Megger also declines any liability for damages resulting directly or indirectly from the delivery supply or use of...

Page 4: ...nsured that this radio energy does not cause any damage to people or equipment located nearby Never exceed the maximum operational capabilities of the Baker DX tester power supplies or Baker ZTX accessory If the equipment is used in a manner not specified by Megger the protection provided by the equipment may be impaired Be sure to follow all safety procedures prescribed by your company industry a...

Page 5: ...NG Select the location for saving data Determining a known good coil to use as a reference Rotor effect on testing 3 BASIC TESTING PROCEDURES Recommended testing sequence Conducting resistance inductance and capacitance tests Conducting DC tests Conducting Surge tests 1 1 1 2 3 3 4 6 6 8 8 9 9 9 13 17 Table Of Contents Baker DX Series Static Motor Analyzer www megger com iii ...

Page 6: ...1 Baker DX instrument overview Front panel controls Figure 1 Front panel controls Instrument Descriptions www megger com 1 Rear panel controls Figure 2 Rear panel controls ...

Page 7: ...tus Bar displays information about the Active Folder and Active Record The elements show you where the information will be saved for the motor currently under test The right third of the Status Bar is dynamic displaying additional information such as the date and time a running clock notice of active ZS Override mode PTT Locked indicator or a test counter when needed Mode Submenu items here change...

Page 8: ...onnects the selected mode with its submenu above The graphic below identifies the test and function modes that become active when you touch the corresponding icons Figure 4 Mode menu icon descriptions Mode submenus The control icons for each mode appear in the submenu just above the Mode Menu The Mode Submenu icons correspond to the Mode Menu item selected In the following example we see the descr...

Page 9: ...egger com 4 Popup menus Popup menus appear when specific functions are selected during the testing process In the ex ample below a popup appears in the Main Display Area when the RLC test selection icon is touched The details of this popup menu are provided in the example below Figure 7 Popup menu icon descriptions for test type selection ...

Page 10: ... line in the Main Display Area also changes black for megohms and red for current NOTE While touching the values for current or megohm will change the measurements and scales presented touching the screen in other parts of the Main Display Area will cause the unit to stop testing which will be recorded as a user abort The voltage scale is always displayed and its plot color is blue In surge mode t...

Page 11: ...ive folder and record for saving data are selected As you execute your tests you will be prompted to save the test data as each test mode completes 2 In the Mode Menu press the Data Folders icon Touching this icon brings the Folder and Record lists into the Display Area as shown below 3 Touch the record and folder you want to use for your testing The selected location will appear in the Status Bar...

Page 12: ...t are in that folder will appear in the Record list 3 Touch highlight an item in the Record list and the results associated with the highlighted record will appear in the Results list Figure 10 Record results Preparing For Testing www megger com 7 4 When you touch the Display icon which functions like a print preview submenu items appear that allow results shown in the Main Display Area to be view...

Page 13: ...esting require using a known good coil as a reference for comparing coil waveforms collected If you will be conducting such tests and have not already established a reference and known good coil this process shows you how to identify a known good coil so that you can set the reference test for comparisons to other coils to be tested For details on this process refer to the Baker DX User Manual Whe...

Page 14: ...t leads Conducting resistance inductance and capacitance tests This unit performs coil resistance tests using low voltages with low voltage leads Further testing such as DC HiPot or surge testing is not necessary until the coil resistance measurement is accept able Coil inductance tests look for changes in a winding s inductance brought about by shorted turns in the coils Inductance readings for t...

Page 15: ...default RLC test selection 4 If performing temperature compensation touch the icon for the proper type of conductor metal aluminum or copper Copper icon shown above 5 If you need to define temperature compensation touch the Temperature icon then use the popup keypad to input actual winding not ambient temperatures Otherwise skip to step 7 6 The default temperature is 25 C key in the actual winding...

Page 16: ... this time is not necessary if you plan to collect inductance and or capacitance tests data as well it can all be saved together when the tests complete When you have completed your setup close the screen www megger com 11 Inductance testing is conducted in a similar manner 1 Touch the RLC test selection icon then touch the Inductance test icon in the popup menu 2 Touch the Frequency icon then tou...

Page 17: ...figuration Preparing For Testing Figure 14 Capacitance test lead connections 4 Touch the RLC test selection icon then touch the Capacitance test icon in the popup menu 5 Push and release the Start PTT button to run the capacitance test Baker DX Series Static Motor Analyzer www megger com 12 1 Connect RLC test lead No 1 to any motor lead 2 Connect RLC test lead No 2 to ground 3 Disconnect RLC test ...

Page 18: ...x C DC and surge tests voltages for more in formation 1 Ensure that the Active Folder and Active Record are those that you want to use for the DC tests 2 Touch the DC Tests icon then the Configuration Options icon when it appears in the submenu Icons for installed options will appear in a popup menu presenting a choice of operation such as testing on a standalone unit or a power pack 3 For this ex...

Page 19: ... C use the keypad to enter the actual motor temperature then touch Done c For reference purposes you can specify the humidity by touching the Humidity icon then use the keypad to enter the percentage of relative humidity d Touch Done after making your entry 7 Push and hold the Start PTT button the following controls appear a If hands free testing is desired touch the Lock PTT icon When the icon ch...

Page 20: ...vere electrical shock WARNING b Rotate the Voltage Output Control knob on the front panel to raise the target voltage level for example 500 volts for a 480 volt motor Use the Fast or Slow Ramp Rate controls as needed to fine tune the level Figure 19 Ramp Rate controls 8 The Status Bar displays a countdown timer for each of the megohm step voltage and DC HiPot tests as shown in the following exampl...

Page 21: ... When the test completes release the Start PTT button or touch the Lock PTT icon to unlock if you were using hands free mode Allow the unit to discharge completely before disconnecting test leads CAUTION NOTE Pressing PTT or touching the screen during testing will stop the test and will be reported as user abort status 5 Touch the Save icon to save the test results to the active folder and record ...

Page 22: ...the Mode Submenu brings up the popup menu shown below to select the mode needed For this example touch the Three phase coil mode icon 3 The Lead Selection icons default to coil No 1 to start the test 4 As noted earlier the operating voltage is the basis for the test voltage used during Surge testing For this example we continue to use the 480 volt motor with a maximum testing voltage of 2000 volts...

Page 23: ...ge waveform zoom icons to adjust the time display scale of the surge waveform 8 Release the PTT button after the desired number of surge pulses have been applied at the target test voltage level 9 If the winding is a wye or delta configuration select lead 2 and repeat Steps 5 8 then repeat for lead 3 NOTE To facilitate comparison of leads you will not be able to select different time scales for le...

Page 24: ...amping up process is used to collect partial discharge inception voltage PDIV and RPDIV R repeated data 7 Increase the voltage to the target test voltage only Partial discharge may or may not occur Basic Testing Procedures www megger com 19 Performing Partial Discharge tests three phase coil mode Partial Discharge PD testing is conducted during surge testing When PD testing is enabled additional e...

Page 25: ...axis As you continue to increase the voltage the activity will become more pronounced and more frequent At the point where more than 50 percent of the surge pulses have a PD pulse the software records the current surge voltage level as RPDIV Basic Testing Procedures Baker DX Series Static Motor Analyzer www megger com 20 Figure 27 Example of acquired inception voltages PDIV and RPDIV 8 To acquire ...

Page 26: ...last recorded value is saved as the PDEV the lowest voltage at which the detector senses a PD pulse Basic Testing Procedures www megger com 21 Figure 28 Example of acquired extinction voltages PDEV and RPDEV 10 When you finish acquiring the extinction thresholds for the first phase release the PTT button 11 Touch the Lead 2 icon and repeat the process for the second phase then Lead 3 in turn 12 Te...

Page 27: ...D data included The waveform displayed is the peak waveform captured during the testing process for each phase The PD signal is overlaid on the surge waveform and displayed with the resolution used during the preceding surge test Basic Testing Procedures Baker DX Series Static Motor Analyzer www megger com 22 Figure 29 PD three phase report PD data overlaid on surge waveform The values for PDIV RP...

Page 28: ...h is determined by the test phase with the most pulses If the duration of tests for each phase is uneven the shorter phases will not extend across the entire graph For this reason you should attempt to keep the duration of each test approximately the same length The left axis shows the voltage of the surge pulse The waveforms are indicated by solid colored lines for each phase The right axis shows...

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