Megger PMM-2 User manual

PMM-2
POWER MULTIMETER
User Guide

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IMPORTANT
This user guide, as well as the hardware and software described in it, is furnished under license, and may
be used or copied only in accordance with the terms of such license. The content of this user guide is
furnished for informational use only and is subject to change without notice. Megger assumes no
responsibility or liability for any errors or inaccuracies that may appear in this user guide.
The information and data in this user guide are proprietary. The equipment described herein may be
protected by U.S. patents. Megger specifically reserves all rights to such proprietary information as well
as rights under any patent, none of which is waived by the submission of this user guide.
Except as permitted by such license, no part of this publication may be reproduced, stored in a retrieval
system, or transmitted, in any form or by any means, electronic, mechanical, recording, or otherwise,
without the prior written permission of Megger.
Megger, the Megger logo are trademarks of Megger. All other trademarks are the property of their
respective owners.
Notice to U.S. government end users. The hardware, software and documentation are “commercial
items,” as that term is defined at 48 C.F.R. §2.101, consisting of “commercial computer software” and
“commercial computer software documentation,” as such terms are used in 48 C.F.R. §12.212 or 48
C.F.R. §227.7202, as applicable. Consistent with 48 C.F.R. §12.212 or 48 C.F.R. §§227.7202-1 through
227.7202-4, as applicable, the commercial computer software and commercial computer software
documentation are being licensed to U.S. government end users (1) only as commercial items and (2)
with only those rights as are granted to all other end users pursuant to the terms and conditions set forth
in the Megger standard commercial agreement for this software and hardware. Unpublished rights
reserved under the copyright laws of the United States. The recipient, if a government agency,
acknowledges that this user guide and the equipment described were procured with "Limited Rights" to
technical data as described in ASPR 9-203 (b).
The onboard display includes an RTOS-resident computer program. This program belongs to Megger and
contains trade secret ideas and information of Megger, written and designed at Megger, 4545 W. Davis,
Dallas, Texas 75211-3422 USA
© 2022
This document is the copyright of:
Megger Limited, 4545 W Davis Street
Dallas, Texas 75211-3422 USA
PHONE: [phone]
FAX: [phone]
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.
For patent information about this instrument refer to the following web site: megger.com/patent

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Revision history
Revision
ECN #
Date
1
87865
9/01/2022
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

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Table&of&contents&
IMPORTANT ......................................................................................................................................................... 2
REVISION HISTORY ............................................................................................................................................... 3
TABLE OF FIGURES ............................................................................................................................................... 7
1.0 INTRODUCTION .............................................................................................................................................. 9
1.1 PRODUCT DESCRIPTION ............................................................................................................................................. 9
1.2 FEATURES ............................................................................................................................................................... 9
1.3 APPLICATIONS ....................................................................................................................................................... 10
1.4 MEGGER WEBSITE .................................................................................................................................................. 10
2.0 SAFETY WARNINGS AND STANDARDS ........................................................................................................... 11
2.1 WARNINGS, CAUTIONS AND NOTES ........................................................................................................................... 11
2.2 ADDITIONAL SAFETY WARNINGS ..................................................................................................................... 12
3.0 INSTRUMENT OVERVIEW .............................................................................................................................. 13
3.1 PMM-2 ONBOARD DISPLAY SCREEN AND POWER INPUT ................................................................................................ 13
3.2 INPUT POWER CORD ............................................................................................................................................... 14
3.3 TOP PANEL COMMUNICATION PORTS AND INPUT TERMINALS ........................................................................................... 15
3.4 CONFIGURATION OF PMM-2 SOFTWARE .................................................................................................................... 16
3.4.1 Configuration ............................................................................................................................................. 17
3.4.2 System configuration options .................................................................................................................... 18
3.4.2.3 Label settings .......................................................................................................................................... 18
3.4.2.3.1 Voltage character ................................................................................................................................. 19
3.4.2.4 Global settings ........................................................................................................................................ 19
3.4.2.4.1 Language ............................................................................................................................................. 19
3.4.2.4.2 Set system date and time ..................................................................................................................... 19
3.4.2.4.3 System info (information screen) ......................................................................................................... 19
3.4.2.5 Screen dimming ....................................................................................................................................... 20
3.4.2.6 Sample settings ....................................................................................................................................... 20
3.4.2.6.1 Fundamental frequency ....................................................................................................................... 20
3.4.2.6.2 Waveform capture rate ........................................................................................................................ 20
3.4.2.6.3 Pre-trigger samples .............................................................................................................................. 20
3.4.2.7 Diagnostic logging settings ..................................................................................................................... 21
3.4.3 Phase angle configuration screen .............................................................................................................. 21
3.4.4 CT/PT ratios ................................................................................................................................................ 21
3.4.6 Colors options ............................................................................................................................................. 22
4.0 GENERAL OPERATING INSTRUCTIONS ........................................................................................................... 23
4.1 SAFETY CONSIDERATIONS ......................................................................................................................................... 23
4.2 SET UP OF PMM-2 ................................................................................................................................................ 23
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 MAIN STARTUP SCREEN ........................................................................................................................................... 25
4.3.1 ! Connection button ................................................................................................................................. 25
4.3.2 " The configuration button ...................................................................................................................... 25

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4.3.3 # Report options button ........................................................................................................................... 25
4.3.4 $ Timer configuration button ................................................................................................................... 26
4.3.4.1 Timer configuration ................................................................................................................................. 27
4.3.4.1.1 Timer name .......................................................................................................................................... 27
4.3.4.1.2 Start/stop condition ............................................................................................................................. 27
4.3.4.1.2.1 Channel selection .............................................................................................................................. 28
4.3.4.1.3 Mode selection ..................................................................................................................................... 28
4.3.4.1.3.1 One-shot ............................................................................................................................................ 28
4.3.4.1.3.2 Accumulate ....................................................................................................................................... 29
4.3.4.1.3.3 Reclosing ........................................................................................................................................... 29
4.3.5 % Binary input configuration button ......................................................................................................... 29
4.3.5.1 ! Trigger configuration button ................................................................................................................... 30
4.3.6 & Snapshot button .................................................................................................................................... 30
4.3.8 ⑦ Record button ........................................................................................................................................ 31
4.3.9 ⑧ Select panels and charts to display button ........................................................................................... 31
4.3.9.1 Enable current/frequency panel .............................................................................................................. 31
4.3.9.2 Enable current panel ............................................................................................................................... 31
4.3.9.3 Enable voltage/frequency panel ............................................................................................................. 32
4.3.9.4 Enable voltage panel ............................................................................................................................... 32
4.3.9.5 Enable frequency panel ........................................................................................................................... 32
4.3.9.6 Enable power panel ................................................................................................................................. 33
4.3.9.7 Enable VA/PF panel ................................................................................................................................. 33
4.3.9.8 Enable timer panel .................................................................................................................................. 34
4.3.9.9 Charts off ................................................................................................................................................. 34
4.3.9.10 Combined waveform mode ................................................................................................................... 35
4.3.9.11 Combined waveform with binary mode ................................................................................................ 35
4.3.9.12 Polar mode ............................................................................................................................................ 36
4.3.9.13 Polar mode with binary ......................................................................................................................... 36
4.3.9.14 Split waveform mode ............................................................................................................................ 37
4.3.9.15 Harmonics mode ................................................................................................................................... 37
4.3.10 ⑨ Voltage and current general settings options .................................................................................... 38
4.3.10.1 Voltage general settings options .......................................................................................................... 38
4.3.10.1.1 Voltage channel enable/disable switch ............................................................................................. 38
4.3.10.1.2 Voltage channel mode options .......................................................................................................... 38
4.3.10.1.3 Voltage channel integration cycles .................................................................................................... 39
4.3.10.1.4 Voltage channel integration seconds ................................................................................................. 39
4.3.10.1.5 Voltage channel range options .......................................................................................................... 39
4.3.10.1.6 Voltage channel trigger setting options ............................................................................................. 39
4.3.10.1.7 Voltage channel low pass filter .......................................................................................................... 40
4.3.10.1.8 Voltage channel external CT settings ................................................................................................. 40
4.3.10.2 Current general settings options ........................................................................................................... 40
4.3.10.2.1 Current channel enable/disable switch .............................................................................................. 41
4.3.10.2.2 Current channel mode options ........................................................................................................... 41
4.3.10.2.3 Current channel integration cycles ..................................................................................................... 41
4.3.10.2.4 Current channel DC integration seconds ............................................................................................ 41
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
4.3.11 ⑩ Freeze button ..................................................................................................................................... 43

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4.3.12 ⑪ Help ? button ...................................................................................................................................... 43
4.3.13 ⑫ File folder button ................................................................................................................................ 43
4.3.14 ⑬ Battery icon ........................................................................................................................................ 43
4.3.15 ⑭ Graphic display screen ........................................................................................................................ 43
4.3.15.1 Graphic display zoom button ................................................................................................................ 44
4.3.16 Binary Inputs #1 and #2 status ................................................................................................................. 44
5.0 APPLICATIONS .............................................................................................................................................. 44
5.1 SINGLE-PHASE OPERATION ....................................................................................................................................... 44
5.1.1 Single-phase to neutral current and voltage example ............................................................................... 45
5.1.2 1-phase, 2-wire, 1 ½ element with CTs example ........................................................................................ 47
5.2 THREE-PHASE OPERATION ....................................................................................................................................... 48
5.2.1 Selecting the configuration ........................................................................................................................ 49
5.2.2 Measuring functions .................................................................................................................................. 49
5.2.3 Clamp-on current and potential transformer operation ............................................................................ 50
5.2.3.1 Measuring primary current with clamp-on CT ........................................................................................ 50
5.2.3.2 Verifying the ratios of CTs ....................................................................................................................... 51
5.3 TIMING TESTS ........................................................................................................................................................ 52
5.3.1 Timing test using binary inputs .................................................................................................................. 53
5.3.2 Timing test using current start ................................................................................................................... 53
5.4 TIMED DATA RECORDING ......................................................................................................................................... 54
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 .................................................................................................................................... 57
5.5.1.4 Logs folder ............................................................................................................................................... 57
5.5.1.5 Software updates .................................................................................................................................... 57
6.0 MAINTENANCE ............................................................................................................................................. 57
6.1 GENERAL MAINTENANCE .......................................................................................................................................... 57
6.2 CLEANING ............................................................................................................................................................. 57
6.3 BATTERY ............................................................................................................................................................... 58
6.3.1 Battery status ............................................................................................................................................. 58
6.4 UPDATING PMM-2 SOFTWARE AND FIRMWARE .......................................................................................................... 58
7.0 BATTERY REPLACEMENT ............................................................................................................................... 58
8.0 SPECIFICATIONS ........................................................................................................................................... 59
9.0 ACCESSORIES ................................................................................................................................................ 62
9.1 INCLUDED ACCESSORIES ........................................................................................................................................... 62
9.2 TABLE OF OPTIONAL ACCESSORIES .............................................................................................................................. 62
10.0 CALIBRATION, REPAIR, AND WARRANTY .................................................................................................... 66
10.1 WARRANTY ......................................................................................................................................................... 66
10.2 RETURN PROCEDURE ............................................................................................................................................ 67
11.0 DECOMMISSIONING ................................................................................................................................... 67
11.1 WEEE DIRECTIVE ................................................................................................................................................ 67
11.2 PMM-2 AND BATTERY DISPOSAL ............................................................................................................................ 68

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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 ...................................................... 19
Figure 7: System info screen ..................................................................................................................... 20
Figure 8: Phase Angle Configuration Setting screen ................................................................................. 21
Figure 9: CT/PT ratios input selection screen ............................................................................................ 22
Figure 10: Primary values displayed with split screen waveforms ............................................................. 22
Figure 11: Color options ............................................................................................................................. 23
Figure 12: Main startup screen identifications ........................................................................................... 25
Figure 13: Reports options – customs form available in the software ....................................................... 26
Figure 14: Timer configuration screen ....................................................................................................... 27
Figure 15: Timer start/stop conditions menu .............................................................................................. 27
Figure 16: Channel select for analog start/stop ......................................................................................... 28
Figure 17: Timer mode selection screen .................................................................................................... 28
Figure 18: Binary input configuration screen ............................................................................................. 29
Figure 19: Programmable voltage threshold setting .................................................................................. 29
Figure 20: Snapshot options screen .......................................................................................................... 30
Figure 21: Select panels to display screen ................................................................................................ 31
Figure 22: Enabled current/frequency panel .............................................................................................. 31
Figure 23: Enabled current panel ............................................................................................................... 32
Figure 24: Enabled voltage/frequency panel ............................................................................................. 32
Figure 25: Enabled voltage panel .............................................................................................................. 32
Figure 26: Enabled frequency panel .......................................................................................................... 33
Figure 27: Enabled Watts and VARs ......................................................................................................... 33
Figure 28: Enabled VA/PF (power factor) panel ........................................................................................ 33
Figure 29: Enabled timer panel .................................................................................................................. 34
Figure 30: Select chart mode screen ......................................................................................................... 34
Figure 31: Charts off screen ...................................................................................................................... 34
Figure 32: Combined waveform screen ..................................................................................................... 35
Figure 33: Combined waveform with binary screen ................................................................................... 35
Figure 34: Polar plot of 3-phase voltage and current vectors .................................................................... 36
Figure 35: Polar plot of 3-phase voltage and current vectors and binary inputs ........................................ 36
Figure 36: Split waveform screen .............................................................................................................. 37
Figure 37: Harmonics display screen ......................................................................................................... 37
Figure 38: Voltage and current general settings screen ............................................................................ 38
Figure 39: Voltage channel modes ............................................................................................................ 38
Figure 40: Voltage ranges .......................................................................................................................... 39
Figure 41: Voltage channels used to measure current via external CTs ................................................... 40
Figure 42: Current channels configuration screen ..................................................................................... 40
Figure 43: Current channel modes ............................................................................................................ 41
Figure 44: Current ranges .......................................................................................................................... 42
Figure 45: Phase reference selection list ................................................................................................... 43
Figure 46: Example zoom of I1 3rd and 5th harmonic distorted waveform ................................................ 44
Figure 47: Binary #1 and #2 graphic icons in graphic window ................................................................... 44
Figure 48: Single-phase voltage and current direct connection ................................................................. 45
Figure 49: Single-phase voltage and current using CT/PT connections .................................................... 45
Figure 50: Single-phase IA and VA with combined waveforms ................................................................. 46
Figure 51: Single-phase with split waveform option ................................................................................... 46
Figure 52: 1-phase, 2 wire, 1½ element with CTs example test connections ............................................ 47
Figure 53: 1-phase, 2 wire ,1½ element example with combined waveforms ........................................... 48
Figure 54: 1-phase, 2 wire, 1½ element example with split waveform option ............................................ 48

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Figure 55: Three-phase, 4 wire, 3 element connections ............................................................................ 49
Figure 56: Example three-phase wye power measurements ..................................................................... 50
Figure 57: Current general settings screen ................................................................................................ 51
Figure 58: Example panels to display for CT testing ................................................................................. 52
Figure 59: Checking CT ratio with clamp-on CT ........................................................................................ 52
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

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1.0 Introduction
This user guide contains information regarding the correct use and safe handling of the POWER
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.
1.1 Product description
The Megger POWER MULTIMETER model PMM-2 is a next generation, state-of-the-art, portable
battery/line operated multifunction instrument for measuring AC or DC voltage, AC primary and
secondary current, DC current, power, reactive power, power factor, phase angle and frequency of a
single or three phase electrical system. The POWER MULTIMETER is easily configured to measure
the amplitude and phase angle between any voltage and current inputs. All measured quantities can
be displayed simultaneously on a user defineable, easy-to-read, color graphic display.
The unique on-board software in the POWER MULTIMETER, combined with a built-in
microprocessor-based timer, is specifically designed to ease testing and commissioning of protective
relay systems. The internal timer responds to a variety of start and stop gates, including the
application of AC or DC voltage or current, and opening or closing of dry contacts.
1.2 Features
• Battery and line operated, with an automatic built-in charger.
• Rugged, ergonomic and light weight plastic enclosure.
• 4 independent voltage and current channels, with a built-in timer. Each voltage terminal is
isolated from the signal common with an impedance of 100 kΩ (0 – 34.999 V) and 5 MΩ (35 – 1000
V) and is physically isolated from the chassis.
• Each voltage terminal is rated for 0 – 1000 V AC/DC.
• Three current terminals rated for 0 - 100 A AC/DC, one terminal to measure low current 0 - 32 A
AC/DC. Each current terminal is isolated from chassis common with an isolation voltage rating of 300
V.
• The four voltage channels can be converted to measure current using clamp-on CT’s with a
voltage input.
• Four low level 0 – 1 V BNC terminals for use with clamp-on CT’s. Includes user programmable
scaling to measure, calculate, and display AC/DC current.
• Specifically designed to ease testing and commissioning of protective relay systems.
• Simultaneously measures and displays voltage, current, phase angle, power, reactive power,
power factor, and frequency of single or three phase systems.
• Wide current and voltage operating ranges.
• Accurate phase angle measurement at very low current levels.
• Auto-ranging to reduce test time, with manual over-ride.
• Ethernet and USB data ports.

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• Large, easy-to-read, high-resolution LCD touch screen display.
• Menu driven, easy to operate.
• Data storage for saving measured values.
• Programmable time data logging to memory.
• Customize C.T. ratio inputs up to a ratio of 9999:1 or 9999:5.
• Customize P.T. ratio inputs up to a ratio of 9999:1 or 9999:5.
• Harmonic measurement of any voltage or current – up to the 50th harmonic.
1.3 Applications
The PMM-2 is an ideal instrument for use in general electrical systems maintenance, in electrical
machine repairs, in protective relay testing, or in monitoring power at the electrical service entrance.
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.
Also, combined with a source of voltage and/or current, PMM-2 becomes an excellent tool for testing
and calibrating various types of protective relays.
1.4 Megger website
Occasionally an information bulletin may be issued via the Megger website. This may concern new
accessories, new usage instructions or a software/firmware update. Please occasionally check on the
Megger website for anything applicable to your PMM-2 POWER MULTIMETER.
www.megger.com