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Related Manuals for Megger PMM-2
Summary of Contents for Megger PMM-2
- Page 1 PMM-2 POWER MULTIMETER User Guide...
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Page 2: Important
FAX: (214) 331-7399 www.megger.com Megger reserves the right to alter the specification of its products from time to time without notice. Although every effort is made to ensure the accuracy of the information contained within this document it is not warranted or represented by Megger Limited to be a complete and up-to-date description. -
Page 3: Revision History
Declaration of conformity Hereby, Megger Instruments Limited declares that the PMM-2, manufactured by Megger Instruments Limited described in this user guide, is following Directive 2014/53/EU. The full text of Megger Instruments EU declarations of conformity is available at the following internet address: Megger.com/Company/About-Us/Legal/EU declarations of conformity... -
Page 4: Table Of Contents
3.4.6 Colors options ............................. 22 4.0 GENERAL OPERATING INSTRUCTIONS ......................23 4.1 S ............................23 AFETY CONSIDERATIONS 4.2 S PMM-2 ..............................23 ET UP OF 4.2.1 Unpack system ............................23 4.2.2 Initial startup .............................. 24 4.2.3 Battery ............................... 24 4.2.3.1 Battery charging ............................. 24 4.3 M... - Page 5 4.3.10.2.5 Current channel range options ......................41 4.3.10.2.6 Current channel trigger setting options ..................... 42 4.3.10.2.7 Current channel low pass filter ......................42 4.3.10.2.8 Current channel external CT settings ....................42 4.3.10.3 Phase reference ............................. 42 ⑩ 4.3.11 Freeze button ............................. 43 PMM-2...
- Page 6 5.3.2 Timing test using current start ........................53 5.4 T ............................54 IMED DATA RECORDING 5.5 PMM-2 software file management ....................... 55 5.5.1 File management main screen ........................56 5.5.1.1 Forms and form results folder ......................... 56 5.5.1.2 Snapshots folder ............................56 5.5.1.3 Recordings folder ............................
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Page 7: Table Of Figures
Table of figures Figure 1: PMM-2 touch screen and power input ..................13 Figure 2: Communication ports and input terminals .................. 15 Figure 3: Main startup screen ........................16 Figure 4: System configuration screen ...................... 17 Figure 5: Enter new profile name ....................... 18 Figure 6: Changing channel 4 name with the alphanumeric keyboard ............ - Page 8 Figure 60: Example recorder capture options screen ................54 Figure 61: File folder main screen ......................55 Figure 62: Example recording data file ...................... 55 Figure 63: File management main screen ....................56 Figure 64: Example three-phase snapshot screen shot ................56 PMM-2...
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Page 9: Introduction
MULTIMETER Model PMM-2. This user guide can be found by pressing the “?” Help button located on the main screen of the PMM-2 software on the onboard display of the PMM-2 unit or on the PC version of the software. Please read the section ‘Safety Precautions’ which contains information regarding your personal safety when using the PMM-2. -
Page 10: Applications
In the protective relay application area, the PMM-2 is designed to perform fast, accurate checking and testing of protective relay and meter installations, during their commissioning and in routine maintenance. -
Page 11: Safety Warnings And Standards
WARNING: Under no circumstances should the operator or technician attempt to open or service any Megger instrument while connected to a power source. Lethal voltages are present and may cause severe injury or death! -
Page 12: Additional Safety Warnings
Additional safety warnings The following are some additional safety related items associated with the PMM-2. § Trained and competent persons must only use the instrument. § Read and understand all safety precautions and operation instructions before attempting to use this instrument. -
Page 13: Instrument Overview
3.0 Instrument overview This section of the manual contains the information that you will need to set up and use the PMM-2. 3.1 PMM-2 onboard display screen and power Input Figure 1: PMM-2 touch screen and power input LCD color display ① – this 10.1-inch touch panel display provides high resolution and features wide viewing angle technology with high luminance. -
Page 14: Input Power Cord
Used to measure voltages up to 1000 V phase to neutral. 3.2 Input power cord The power cord that is supplied with the PMM-2 is based upon the power cord selection in the PMM-2 style number. Depending on the country, the power cord can come with a NEMA 5-15 male... -
Page 15: Top Panel Communication Ports And Input Terminals
The USB 2.0 Interface requires a Type B “downstream” connector and is primarily used as a communication and control port when used with Megger software. A USB cable is not provided with the test set or in the optional accessories. For computer control, an Ethernet cable is provided. -
Page 16: Configuration Of Pmm-2 Software
POWER ON/OFF switch to ON (press the button in, the button ring will light up). The PMM-2 unit will go through its power up sequence, and in ± 30 seconds the main startup screen will appear. -
Page 17: Configuration
Pressing the Configuration button will allow the user to configure the PMM-2 hardware and PMM-2 software by displaying tabs for; System configuration, Phase settings display configurations, CT/PT settings configurations, and Chart color options for grid, voltage and current phasors and waveform traces, see figure 4. -
Page 18: System Configuration Options
3.4.2 System configuration options This section of the manual will describe the System, Phase, CT/PT, and Colors configurations in the PMM-2 software. 3.4.2.1 Virtual alphanumeric keyboard The virtual alphanumeric keyboard will automatically appear in appropriate touch screen windows to allow the entry of ASCII text. This keyboard is used to enter names for user defined profiles, change the “neutral”... -
Page 19: Voltage Character
Spanish or German. 3.4.2.4.2 Set system date and time Press the Internal button to reset the Date and Time in the PMM-2 software. This information is critical for saving recorded values in the unit internal file manager. 3.4.2.4.3 System info (information screen) The “System Info”... -
Page 20: Screen Dimming
3.4.2.6.2 Waveform capture rate In the default “7.2 kHz” setting, the PMM-2 will sample the waveforms at a rate of 7.2 kHz (144 samples per second at 50 Hz or 120 samples per second at 60 Hz). When making a recording of data, the slower the sampling rate the more data can be captured and saved to internal memory. -
Page 21: Diagnostic Logging Settings
In the “Diagnostic Logging Settings” window the logging function is OFF by default. Select the “Enable Logging” button to log commands sent to the PMM-2 from the PMM-2 software. This information can be useful to the Megger technical support group when troubleshooting. The “Clear Logs”... -
Page 22: Colors Options
Figure 10: Primary values displayed with split screen waveforms Note the primary values displayed for the voltage is in kV. 3.4.6 Colors options Press this button to adjust the colors of the voltage and current waveform traces and vectors, background, labels, and more. PMM-2... -
Page 23: General Operating Instructions
Megger of the damage. If no damage, save the shipping box and packing material for reuse, such as returning the unit for calibration. If being returned for calibration or service, see section 10.2 return procedure. -
Page 24: Initial Startup
30 seconds and the main startup screen will appear, see section 4.3. 4.2.3 Battery After powering up the PMM-2 you will note in the upper right corner of the touch screen the battery charge icon . It will indicate the level of charge on the internal battery. NOTE: Always ensure that the battery is properly and fully charged before using the instrument in the battery operation mode. -
Page 25: Main Startup Screen
4.3.1 ① Connection button The PMM-2 software will auto-connect to the PMM-2 instrument. If for any reason you should lose connection between the software and the PMM-2 press or click on the button and the touch screen will auto connect to the PMM-2. -
Page 26: Timer Configuration Button
Figure 13: Reports options – customs form available in the software 4.3.4 ④ Timer configuration button The PMM-2 is equipped with an internal timer, primarily intended for performing timing tests on protective relays and circuit breakers. The timer is equipped with a sensing circuitry that responds to a change of state. -
Page 27: Timer Configuration
The name is limited to 19 displayed characters, which will be displayed in the main screen and captured using snapshot for record keeping. 4.3.4.1.2 Start/stop condition The Start and Stop Conditions are programmable. Figure 15: Timer start/stop conditions menu The following are descriptions of each condition. PMM-2... -
Page 28: Channel Selection
Start Analog Zero. When the current is removed the timer will start. Use Binary Input #2 to monitor relay trip contacts to stop the timer. 4.3.4.1.3 Mode selection Figure 17: Timer mode selection screen 4.3.4.1.3.1 One-shot The one-shot mode is for a single timing test, where only one timing result is required. PMM-2... -
Page 29: Accumulate
Note that if the trigger is enabled it will freeze the screen values when the input condition is true, see freeze section 4.3.11 for more details. PMM-2... -
Page 30: Trigger Configuration Button
Image radio button, and/or press on the data radio button to save the displayed data. Images and data are saved to internal memory. To review images and/or data, press on the file folder button in the tool bar. PMM-2... -
Page 31: Record Button
4.3.8 ⑦ Record button Press this button to use the recording feature of the PMM-2. For normal single-phase or three-phase measurement the instrument can be configured so that the screen data is recorded into non-volitile memory in the PMM-2 on a pre-programmed time Interval over a programmable duration, see section 5.4 time data recording. -
Page 32: Enable Voltage/Frequency Panel
Figure 25: Enabled voltage panel 4.3.9.5 Enable frequency panel When enabled the frequency for each phase of voltage and current will be displayed in the top right side of the numerical display. When enabled the switch changes color from grey to yellow. PMM-2... -
Page 33: Enable Power Panel
Values may be mVA, VA, kVA depending on the values of the voltages and currents. When enabled the switch changes color from grey to yellow. Figure 28: Enabled VA/PF (power factor) panel PMM-2... -
Page 34: Enable Timer Panel
(one with frequency and one without). The following are descriptions of each available chart. Figure 30: Select chart mode screen 4.3.9.9 Charts off Selecting this mode will turn all charts off on the main display. Figure 31: Charts off screen PMM-2... -
Page 35: Combined Waveform Mode
Binary Inputs #1 and #2, indicated by the thick aqua colored lines in the chart and the binary inputs panel at the bottom of the chart indicating the current state of the binary. Figure 33: Combined waveform with binary screen PMM-2... -
Page 36: Polar Mode
Binary Inputs #1 and #2, indicated by the thick aqua colored lines in the chart and the binary inputs panel at the bottom of the chart indicating the current state of the binary. Figure 35: Polar plot of 3-phase voltage and current vectors and binary inputs PMM-2... -
Page 37: Split Waveform Mode
DC and AC amplitudes for each phase and harmonic displayed on the left side of the display. Figure 37: Harmonics display screen Using the touch screen, slide your finger up and down the columns of data to view harmonic data up to the 50 harmonic. PMM-2... -
Page 38: Voltage And Current General Settings Options
4.3.10.1.2 Voltage channel mode options The default setting is AC. Touch the AC button, and a list of mode options will be provided. Figure 39: Voltage channel modes PMM-2... -
Page 39: Voltage Channel Integration Cycles
> greater than the level entered or < less than the level entered. The default Level is 0.000 V, with the enabled set to > greater than. Therefore, if voltage is present on the input terminals and the recorder is activated, it will start immediately, or once voltage is sensed on the inputs it will start recording. PMM-2... -
Page 40: Voltage Channel Low Pass Filter
Figure 41: Voltage channels used to measure current via external CTs NOTE: When using external CTs a clamp on CT icon will appear in the upper right hand corner of the specific channel. 4.3.10.2 Current general settings options Figure 42: Current channels configuration screen PMM-2... -
Page 41: Current Channel Enable/Disable Switch
1.00 second, which ensures an accurate displayed value. The shortest DC integration time is 0.10 second. 4.3.10.2.5 Current channel range options The current channel has several ranges available. The default setting is auto, for auto-range, where the range change is done automatically based upon the measured values over the integration time setting. PMM-2... -
Page 42: Current Channel Trigger Setting Options
Maximum input voltage rating of CT1 to CT4 is 1 V 4.3.10.3 Phase reference Whether single phase, or three phase, the PMM-2 can measure the phase angles between all metered values of voltage and/or current. It is customary to set the phase reference to phase A (V1) voltage input. -
Page 43: Freeze Button
4.3.12 ⑪ Help ? button Press this button to access the built-in user guide for help associated with the PMM-2. 4.3.13 ⑫ File folder button To access the file management system, press the file folder top right-center of the tool bar. It provides the user the ability to save/open form reports, save/open snapshots of data and/or screen shots, save/open recordings, save/open log files, and save software updates. -
Page 44: Graphic Display Zoom Button
The user may choose to view all the default channels, even though single phase measurements are to be made, or change the unit configuration to view only those values that are to be measured and possibly recorded and saved. PMM-2... -
Page 45: Single-Phase To Neutral Current And Voltage Example
Connections should be established to the potential and current terminals before the measuring circuit is energized! If using the CT/PT connections, under no circumstance should the CT secondary be open circuited while making connections to the PMM-2 input terminals. Figure 49: Single-phase voltage and current using CT/PT connections 5.1.1 Single-phase to neutral current and voltage example... -
Page 46: Figure 50: Single-Phase Ia And Va With Combined Waveforms
Note that the freeze icon changes colors when pressed. Pressing again will unfreeze the display and it will change back to its original color. It may also be used in conjunction with the snapshot button to freeze the values, and then take PMM-2... -
Page 47: 1-Phase, 2-Wire, 1 ½ Element With Cts Example
, see section 4.3.9 for details. For this example, the current, voltage, power, and VA/PF panels are selected. After pressing the green check button, with the application of voltage and current the user should see something like the following screen. PMM-2... -
Page 48: Three-Phase Operation
, see 4.3.8 for details, allows the user to record the displayed data over a programable period of time. 5.2 Three-phase Operation The three-phase operation mode is intended for measuring all 3-phase quantities in a wye or delta installation. PMM-2... -
Page 49: Selecting The Configuration
Phase Reference. 5.2.1 Selecting the configuration The PMM-2 default configuration is set for three phase wye, with VA set as the phase reference, and the phase configuration is set for ABC counterclockwise (see section 3.4.3 phase angle configuration for details), Measure L-N; display L-N. The following is a typical three phase, 4-wire, connections, with CTs and direct connection of the voltage input terminals. -
Page 50: Clamp-On Current And Potential Transformer Operation
Up to four clamp-ons can used for three-phase with neutral applications. Note that the CTs are only rated for 600 V class circuits. All measuring functions are explained in sections 4.3.9 and 4.3.10. PMM-2... -
Page 51: Verifying The Ratios Of Cts
5.2.3.2 Verifying the ratios of CTs Verification of CT ratios requires an appropriate variable high current source and the PMM-2. To verify CT ratios, use I1 and I2, with I1 measuring the primary current using a clamp-on CT, and I2 to measure the secondary current. -
Page 52: Timing Tests
(see section 4.3.4.1.2) selecting analog non-zero channel IA. The timer can be stopped using binary input #2. If performing a dropout timing test the timer can be started when current is removed (see section 4.3.4.1.2) selecting analog zero channel IA. Two examples are provided in the following sections. PMM-2... -
Page 53: Timing Test Using Binary Inputs
Series the current output terminals of the external current source through the current input terminals I1 on the PMM-2. Press the voltage and current general settings options button (see section 4.3.10.2.) deselect I2, I3, and IN. Since no voltages are used for this test, deselect all the voltage channels. -
Page 54: Timed Data Recording
Press the recorder button. Enter a file name for the recorded data by pressing the file name line. Enter the desired recording time interval in seconds. Example: for a recording, every 5 minutes enter 60 x 5 or 300 seconds. PMM-2... -
Page 55: Pmm-2 Software File Management
USB memory stick or remote data storage. From there the .csv file can be easily imported into an Excel spreadsheet. 5.5 PMM-2 software file management The user uses the file management screen to access files stored in the PMM-2 internal memory. PMM-2... -
Page 56: File Management Main Screen
Figure 63: File management main screen 5.5.1 File management main screen There are six file folders, which are associated with different file recording features within the PMM-2 software. 5.5.1.1 Forms and form results folder Form results are test reports that have been saved, see section 4.3.3 reports. Pressing on the reports button takes the user to the report’s options –... -
Page 57: Recordings Folder
USB port for file transfer. Files can be shared or transferred to the PMM-2 by using a USB memory stick, placing it into the USB A port on top of the PMM-2, go to the file folder, select the file that will appear in the right-hand side of the screen and use the import file button to import into the snapshot folder. -
Page 58: Battery
2_software_#.### and install per the instructions. USB memory stick: With the PMM-2 powered up, insert the USB memory stick into the USB type A port on top of the PMM-2. Press the configuration screen button, with the System tab highlighted press the system info button, then press Update System button. -
Page 59: Specifications
Crest factor: 3 or maximum 145 A peak, channels 1-3, or maximum 46 A peak, channel 4 Megger reserves the right to change product specifications at any time without notice. Accuracies specified within 23° ± 5° C (73° ± 9° F) in the frequency range of 45 to 65 Hz, and after warm-up of 20 min. - Page 60 0.01 PF Frequency Resolution: 10 - 1000 Hz, 0.0001 Hz Accuracy ± 4 ppm (0.0004%) of reading Harmonics Measures all harmonic content simultaneously of any selected voltage or current, up to the 50th harmonic. Accuracy ± 5 % of reading PMM-2...
- Page 61 USB B port – The USB B port interface requires a Type B “downstream” connector and is a communication and control port when used with a PC and Megger software. Bluetooth (optional): An optional wireless Bluetooth interface is available (future).
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Page 62: Accessories
The test leads and test lead accessories are optional. Test leads and accessories can be ordered with the unit, or later. Descriptions of optional test leads and accessories Part Number Color-coded, sleeved test leads: Sleeved test leads, one red, one black, 200 cm (78.7”) long, 600 V, 32 A CAT II RoHS 2008-539-2 compliant. PMM-2... - Page 63 20 mm steel jaws, 1000 V AC/DC, CAT III, (fuse not 90022-985 included). Digital multimeter Fuse, 1 each, Fast Acting, 11 A, 1000 V 90026-411 AC/DC. Note that each test clip will require 1 each of the fuse. PMM-2...
- Page 64 Set of 3 states current plugs, 3 ft. 6 in. (1m) Jumper lead: Used to common neutral returns together Jumper lead, black, 12.5 cm (5”) long, use with voltage and 2001-573 current neutral returns, 600 V, 32 A, CAT II. PMM-2...
- Page 65 40 A to 100 A peak: ± 15% max at 100 A Output termination: 6.5 ft (198 cm) coaxial cable Dimensions: 9.09 H x 1.42 W x 2.64 D in. (231 H x 36 W x 67 D mm) Weight: 11.6 oz (330 g) with battery PMM-2...
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Page 66: Calibration, Repair, And Warranty
12 months from date of shipment. Since Megger has no control over conditions of use, no warranty is made or implied as to suitability for customer's intended use beyond the units normal performance specifications. No other warranty is either expressed or implied. -
Page 67: Return Procedure
4. Before the instrument is sent to Megger, freight prepaid, make sure that the return label is attached or that the RA number is clearly marked on the outside of the package, and on any correspondence. -
Page 68: Pmm-2 And Battery Disposal
11.2 PMM-2 and battery disposal The crossed out wheeled bin symbol placed on the unit as a reminder not to dispose of the PMM-2 with general waste when they reach the end of their usable life. The battery within the unit must be properly disposed.
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