METREL power master MI 2892 User manual

Power Master
MI 2892
Instruction manual
Version 8.2.2 Code No. 20 752 217

2
Distributor:
Manufacturer:
METREL d.d.
Ljubljanska cesta 77
1354 Horjul
Slovenia
web site: http://www.metrel.si
e-mail: [e-mail]
Mark on your equipment certifies that this equipment meets the requirements of the EU
(European Union) concerning safety and interference causing equipment regulations
© 2017 METREL
No part of this publication may be reproduced or utilized in any form or by any means without
permission in writing from METREL.

MI 2892 Power Master Table of contents
3
1Introduction ..............................................................................................................................7
1.1 Main Features..............................................................................................................................7
1.2 Safety considerations ..................................................................................................................8
1.3 Applicable standards ...................................................................................................................9
1.4 Abbreviations.............................................................................................................................10
2Description..............................................................................................................................20
2.1 Front panel ................................................................................................................................20
2.2 Connector panel ........................................................................................................................21
2.3 Bottom view ..............................................................................................................................22
2.4 Accessories ................................................................................................................................22
2.4.1 Standard accessories.............................................................................................................22
2.4.2 Optional accessories .............................................................................................................22
3Operating the instrument ........................................................................................................23
3.1 Instrument status bar................................................................................................................24
3.2 Instrument keys.........................................................................................................................25
3.3 Instrument memory (microSD card)..........................................................................................26
3.4 Instrument Main Menu .............................................................................................................26
3.4.1 Instrument submenus...........................................................................................................27
3.5 U, I, f ..........................................................................................................................................29
3.5.1 Meter.....................................................................................................................................29
3.5.2 Scope.....................................................................................................................................31
3.5.3 Trend .....................................................................................................................................32
3.6 Power.........................................................................................................................................34
3.6.1 Meter.....................................................................................................................................34
3.6.2 Trend .....................................................................................................................................37
3.7 Energy........................................................................................................................................40
3.7.1 Meter.....................................................................................................................................40
3.7.2 Trend .....................................................................................................................................41
3.7.3 Efficiency ...............................................................................................................................42
3.8 Harmonics / interharmonics......................................................................................................44
3.8.1 Meter.....................................................................................................................................44
3.8.2 Histogram (Bar) .....................................................................................................................46
3.8.3 Harmonics Average Histogram (Avg Bar)..............................................................................48
3.8.4 Trend .....................................................................................................................................49
3.9 Flickers.......................................................................................................................................51
3.9.1 Meter.....................................................................................................................................51
3.9.2 Trend .....................................................................................................................................52
3.10 Phase Diagram...........................................................................................................................54
3.10.1 Phase diagram...................................................................................................................54
3.10.2 Unbalance diagram...........................................................................................................55
3.10.3 Unbalance trend ...............................................................................................................56
3.11 Temperature..............................................................................................................................57
3.11.1 Meter ................................................................................................................................57
3.11.2 Trend.................................................................................................................................58
3.12 Underdeviation and overdeviation ...........................................................................................58
3.12.1 Meter ................................................................................................................................58
3.12.2 Trend.................................................................................................................................59
3.13 Signalling....................................................................................................................................61
3.13.1 Meter ................................................................................................................................61
3.13.2 Trend.................................................................................................................................62
3.13.3 Table .................................................................................................................................63
3.14 General Recorder.......................................................................................................................64

MI 2892 Power Master Table of contents
4
3.15 Waveform/inrush recorder .......................................................................................................66
3.15.1 Setup.................................................................................................................................67
3.15.2 Capturing waveform .........................................................................................................69
3.15.3 Captured waveform..........................................................................................................70
3.16 Transient recorder.....................................................................................................................72
3.16.1 Setup.................................................................................................................................72
3.16.2 Capturing transients .........................................................................................................73
3.16.3 Captured transients ..........................................................................................................75
3.17 Events table ...............................................................................................................................76
3.18 Alarms table...............................................................................................................................80
3.19 Rapid voltage changes (RVC) table............................................................................................82
3.20 Memory List...............................................................................................................................83
3.20.1 General Record .................................................................................................................85
3.20.2 Waveform snapshot..........................................................................................................87
3.20.3 Waveform/inrush record..................................................................................................89
3.20.4 Transients record..............................................................................................................89
3.21 Measurement Setup submenu..................................................................................................89
3.21.1 Connection setup..............................................................................................................90
3.21.2 Event setup .......................................................................................................................95
3.21.3 Alarm setup.......................................................................................................................97
3.21.4 Signalling setup.................................................................................................................98
3.21.5 Rapid voltage changes (RVC) setup ..................................................................................99
3.21.6 Measuring Methods setup..............................................................................................100
3.22 General Setup submenu..........................................................................................................100
3.22.1 Communication...............................................................................................................101
3.22.2 Time & Date ....................................................................................................................103
3.22.3 Time & Date ....................................................................................................................103
3.22.4 Language.........................................................................................................................104
3.22.5 Instrument info...............................................................................................................104
3.22.6 Lock/Unlock ....................................................................................................................105
3.22.7 Colour model ..................................................................................................................106
4Recording Practice and Instrument Connection ...................................................................... 108
4.1 Measurement campaign..........................................................................................................108
4.2 Connection setup.....................................................................................................................112
4.2.1 Connection to the LV Power Systems .................................................................................112
4.2.2 Connection to the MV or HV Power System.......................................................................116
4.2.3 Current clamp selection and transformation ratio setting .................................................121
4.2.4 Connection check................................................................................................................125
4.2.5 Temperature probe connection..........................................................................................127
4.2.6 GPS time synchronization device connection.....................................................................128
4.2.1 Printing support ..................................................................................................................129
4.3 Remote instrument connection (over Internet / 3G,GPRS) ....................................................130
4.3.1 Communication principle....................................................................................................130
4.3.2 Instrument setup on remote measurement site ................................................................131
4.3.3 PowerView setup for instrument remote access................................................................132
4.3.4 Remote connection.............................................................................................................133
4.4 Number of measured parameters and connection type relationship ....................................145
5Theory and internal operation ............................................................................................... 149
5.1 Measurement methods...........................................................................................................149
5.1.1 Measurement aggregation over time intervals ..................................................................149
5.1.2 Voltage measurement (magnitude of supply voltage) .......................................................149
5.1.3 Current measurement (magnitude of supply current) .......................................................150

MI 2892 Power Master Table of contents
5
5.1.4 Frequency measurement ....................................................................................................150
5.1.5 Modern Power measurement.............................................................................................151
5.1.6 Classic Vector and Arithmetic Power measurement ..........................................................156
5.1.7 Energy..................................................................................................................................159
5.1.8 Harmonics and interharmonics...........................................................................................160
5.1.9 Signalling .............................................................................................................................162
5.1.10 Flicker..............................................................................................................................162
5.1.11 Voltage and current unbalance ......................................................................................163
5.1.12 Underdeviation and overdeviation.................................................................................164
5.1.13 Voltage events ................................................................................................................164
5.1.14 Alarms.............................................................................................................................168
5.1.15 Rapid voltage changes (RVC) ..........................................................................................169
5.1.16 Data aggregation in GENERAL RECORDING ....................................................................170
5.1.17 Flagged data....................................................................................................................173
5.1.18 Waveform snapshot........................................................................................................174
5.1.19 Waveform recorder ........................................................................................................174
5.1.20 Transient recorder ..........................................................................................................178
5.2 EN 50160 Standard Overview..................................................................................................179
5.2.1 Power frequency.................................................................................................................180
5.2.2 Supply voltage variations ....................................................................................................180
5.2.3 Supply voltage unbalance ...................................................................................................180
5.2.4 THD voltage and harmonics ................................................................................................180
5.2.5 Interharmonic voltage.........................................................................................................181
5.2.6 Mains signalling on the supply voltage ...............................................................................181
5.2.7 Flicker severity ....................................................................................................................181
5.2.8 Voltage dips.........................................................................................................................181
5.2.9 Voltage swells......................................................................................................................182
5.2.10 Short interruptions of the supply voltage.......................................................................182
5.2.11 Long interruptions of the supply voltage........................................................................182
5.2.12 Power Master recorder setting for EN 50160 survey.....................................................182
6Technical specifications ......................................................................................................... 184
6.1 General specifications .............................................................................................................184
6.2 Measurements.........................................................................................................................184
6.2.1 General description.............................................................................................................184
6.2.2 Phase Voltages ....................................................................................................................185
6.2.3 Line voltages........................................................................................................................186
6.2.4 Current ................................................................................................................................186
6.2.5 Frequency............................................................................................................................188
6.2.6 Flickers.................................................................................................................................188
6.2.7 Combined power.................................................................................................................188
6.2.8 Fundamental power............................................................................................................189
6.2.9 Nonfundamental power......................................................................................................189
6.2.10 Power factor (PF, PFe, PFv, PFa) .....................................................................................190
6.2.11 Displacement factor (DPF) or Cos φ) ..............................................................................190
6.2.12 Energy .............................................................................................................................190
6.2.13 Voltage harmonics and THD ...........................................................................................191
6.2.14 Current harmonics, THD and k-factor.............................................................................191
6.2.15 Voltage interharmonics ..................................................................................................192
6.2.16 Current interharmonics ..................................................................................................192
6.2.17 Signalling.........................................................................................................................193
6.2.18 Unbalance .......................................................................................................................193
6.2.19 Overdeviation and Underdeviation ................................................................................193

MI 2892 Power Master Table of contents
6
6.2.20 Time and duration uncertainty.......................................................................................193
6.2.21 Temperature probe ........................................................................................................193
6.2.22 Phase angle.....................................................................................................................194
6.2.23 400Hz systems specification...........................................................................................194
6.2.24 VFD (Variable frequency drive) systems specification....................................................194
6.2.25 Differences in specification between 400Hz, VFD and 50/60 Hz systems......................194
6.3 Recorders.................................................................................................................................196
6.3.1 General recorder.................................................................................................................196
6.3.2 Waveform/inrush recorder.................................................................................................196
6.3.3 Waveform snapshot............................................................................................................197
6.3.4 Transients recorder.............................................................................................................197
6.4 Standards compliance .............................................................................................................198
6.4.1 Compliance to the IEC 61557-12.........................................................................................198
6.4.2 Compliance to the to the IEC 61000-4-30...........................................................................199
7Maintenance ......................................................................................................................... 200
7.1 Inserting batteries into the instrument...................................................................................200
7.2 Batteries ..................................................................................................................................201
7.3 Firmware upgrade ...................................................................................................................202
7.3.1 Requirements......................................................................................................................202
7.3.2 Upgrade procedure.............................................................................................................202
7.4 Power supply considerations...................................................................................................206
7.5 Cleaning ...................................................................................................................................206
7.6 Periodic calibration..................................................................................................................207
7.7 Service .....................................................................................................................................207
7.8 Troubleshooting ......................................................................................................................207

MI 2892 Power Master Introduction
7
1Introduction
Power Master is handheld multifunction instrument for power quality analysis and energy efficiency
measurements.
Figure 1.1: Power Master instrument
1.1 Main Features
Full compliance with power quality standard IEC 61000-4-30 Class A.
Simple and powerful recorder with microSD memory card (sizes up to 32 GB are supported).
4 voltage channels with wide measurement range: up to 1000 Vrms, CAT III / 1000 V, with
support for medium and high voltage systems.
Simultaneous voltage and current (8 channels) sampling, 16 bit AD conversion for accurate
power measurements and minimal phase shift error.
4 current channels with support for automatic clamp recognition and range selection.
Compliance with IEC 61557-12 and IEEE 1459 (Combined, fundamental, nonfundamental power)
and IEC 62053-21 (Energy).
4.3’’ TFT colour display.

MI 2892 Power Master Introduction
8
Waveform/inrush recorder, which can be triggered on event or alarms, and run simultaneously
with general recorder.
Powerful troubleshooting tools: transient recorder with envelope and level triggering.
Support for 50Hz, 60Hz, 400Hz system frequency and direct VFD (variable frequency drives)
measuremend
PC Software PowerView v3.0 is an integral part of a measuring system which provides easiest
way to download, view and analyse measured data or print reports.
oPowerView v3.0 analyser exposes a simple but powerful interface for downloading
instrument data and getting quick, intuitive and descriptive analysis. Interface has been
organized to allow quick selection of data using a Windows Explorer-like tree view.
oUser can easily download recorded data, and organize it into multiple sites with many
sub-sites or locations.
oGenerate charts, tables and graphs for your power quality data analysing, and create
professional printed reports.
oExport or copy / paste data to other applications (e.g. spreadsheet) for further analysis.
oMultiple data records can be displayed and analysed simultaneously.
oMerge different logging data into one measurement, synchronize data recorded with
different instruments with time offsets, split logging data into multiple measurements,
or extract data of interest.
oInstrument remote access over internet connection.
1.2 Safety considerations
To ensure operator safety while using the Power Master instruments and to minimize the risk of
damage to the instrument, please note the following general warnings:
The instrument has been designed to ensure maximum operator safety. Usage in a way
other than specified in this manual may increase the risk of harm to the operator!
Do not use the instrument and/or accessories if any visible damage is noticed!
The instrument contains no user serviceable parts. Only an authorized dealer can carry out
service or adjustment!
All normal safety precautions have to be taken in order to avoid risk of electric shock when
working on electrical installations!
Only use approved accessories which are available from your distributor!
Instrument contains rechargeable NiMH batteries. The batteries should only be replaced
with the same type as defined on the battery placement label or in this manual. Do not use
standard batteries while power supply adapter/charger is connected, otherwise they may
explode!
Hazardous voltages exist inside the instrument. Disconnect all test leads, remove the power
supply cable and switch off the instrument before removing battery compartment cover.
Maximum nominal voltage between any phase and neutral input is 1000 VRMS. Maximum
nominal voltage between phases is 1730 VRMS.

MI 2892 Power Master Introduction
9
Always short unused voltage inputs (L1, L2, L3, GND) with neutral (N) input to prevent
measurement errors and false event triggering due to noise coupling.
Do not remove microSD memory card while instrument is recording or reading data. Record
damage and card failure can occur.
1.3 Applicable standards
The Power Master are designed and tested in accordance with the following standards:
Electromagnetic compatibility(EMC)
EN 61326-2-2: 2013
Electrical equipment for measurement, control and
laboratory use –EMC requirements –
Part 2-2: Particular requirements - Test configurations,
operational conditions and performance criteria for
portable test, measuring and monitoring equipment used
in low-voltage distribution systems
Emission: Class A equipment (for industrial
purposes)
Immunity for equipment intended for use in
industrial locations
Safety (LVD)
EN 61010-1: 2010
Safety requirements for electrical equipment for
measurement, control and laboratory use –
Part 1: General requirements
EN 61010-2-030: 2010
Safety requirements for electrical equipment for
measurement, control and laboratory use –
Part 2-030: Particular requirements for testing and
measuring circuits
EN 61010-031: 2002 + A1: 2008
Safety requirements for electrical equipment for
measurement, control and laboratory use –
Part 031: Safety requirements for hand-held probe
assemblies for electrical measurement and test
EN 61010-2-032: 2012
Safety requirements for electrical equipment for
measurement, control and laboratory use
Part 031: Safety requirements for hand-held probe
assemblies for electrical measurement and test
Measurement methods
IEC 61000-4-30: 2015 Class A
Part 4-30: Testing and measurement techniques –Power
quality measurement methods
IEC 61557-12: 2007
Equipment for testing, measuring or monitoring of
protective measures –Part 12: Performance measuring
and monitoring devices (PMD)
IEC 61000-4-7: 2002 + A1: 2008
Part 4-7: Testing and measurement techniques –General
guide on harmonics and interharmonics measurements
and instrumentation for power supply systems and
equipment connected thereto
IEC 61000-4-15 : 2010
Part 4-15: Testing and measurement techniques –
Flickermeter –Functional and design specifications

MI 2892 Power Master Introduction
10
IEC 62053-21 : 2003
Part 21: Static meters for active energy (Class 1)
IEC 62053-23 : 2003
Part 23: Static meters for reactive energy (Class 2)
IEEE 1459 : 2010
IEEE Standard Definitions for the Measurement of Electric
Power Quantities Under Sinusoidal, Nonsinusoidal,
Balanced, or Unbalanced Conditions
EN 50160 : 2010
Voltage characteristics of electricity supplied by public
electricity networks
GOST R 54149 : 2010
Electric energy. Electromagnetic compatibility of technical
equipment. Power quality limits in the public power
supply systems
Note about EN and IEC standards:
Text of this manual contains references to European standards. All standards of EN 6XXXX (e.g. EN
61010) series are equivalent to IEC standards with the same number (e.g. IEC 61010) and differ only in
amended parts required by European harmonization procedure.
1.4 Abbreviations
In this document following symbols and abbreviations are used:
CFI
Current crest factor, including CFIp (phase p current crest factor) and
CFIN (neutral current crest factor). See 5.1.3 for definition.
CFU
Voltage crest factor, including CFUpg (phase p to phase g voltage
crest factor) and CFUp (phase p to neutral voltage crest factor). See
5.1.2 for definition.
 DPFind/cap
Instantaneous phase power displacement (fundamental) power
factor or cos , including  DPFpind (phase p power displacement).
Minus sign indicates generated power and plus sign indicates
consumed power. Suffix ind/cap represents inductive/capacitive
character.
DPFind/cap

Recorded phase displacement (fundamental) power factor or cos ,
including DPFpind/cap

(phase p power displacement).
Minus sign indicates generated
power and plus sign indicates
consumed power. Suffix ind/cap
represents inductive/ capacitive
character. This parameter is recorded
separately for each quadrant as
shown on figure. See 5.1.5 for
definition.
 DPFatotind
 DPFatotcap
Instantaneous total arithmetic displacement (fundamental) power
factor.
Minus sign indicates generated power and plus sign indicates
consumed power. Suffix ind/cap represents inductive/capacitive
character. See 5.1.6 for definition.
DPFatotind

Recorded total arithmetic fundamental power factor.
2700
DPFind+
Lead
Lag
DPFcap+
DPFcap-
DPFind-
1800
900
00
+P-P
-Q
+Q I
II
III IV

MI 2892 Power Master Introduction
11
DPFatotcap

Minus sign indicates generated power
and plus sign indicates consumed
power. Suffix ind/cap represents
inductive/capacitive character. This
parameter is recorded separately as
shown on figure. See 5.1.6 for
definition.
 DPFvtotind
 DPFvtotcap
Instantaneous positive sequence total vector displacement
(fundamental) power factor.
Minus sign indicates generated power and plus sign indicates
consumed power. Suffix ind/cap represents inductive/capacitive
character. See 5.1.6 for definition.
DPFvtotind

DPFvtotcap

Recorded total vector fundamental
power factor.
Minus sign indicates generated power
and plus sign indicates consumed
power. Suffix ind/cap represents
inductive/capacitive character. This
parameter is recorded separately as
shown on figure. See 5.1.6 for
definition.
 DPF+totind
 DPF+totcap
Instantaneous positive sequence fundamental power factor.
Minus sign indicates generated power and plus sign indicates
consumed power. Suffix ind/cap represents inductive/capacitive
character. See 5.1.5 for definition.
DPF+totind

DPF+totcap

Recorded total positive sequence
fundamental power factor.
Minus sign indicates generated power
and plus sign indicates consumed
power. Suffix ind/cap represents
inductive/capacitive character. This
parameter is recorded separately as
shown on figure. See 5.1.5 for
definition.
Dı
1.4.1 Phase current distortion power, including Dıp
distortion power). See 5.1.5 section: Modern
Power measurement
Standard compliance: IEEE 1459-2010 for definition.
Deı
1.4.2 Total effective current distortion power. See
5.1.5 section: Modern Power measurement
Standard compliance: IEEE 1459-2010 for definition.
2700
1800
900
00
+P-P
-Q
+Q I
II
III IV
DPFatotind+
DPFatotcap+
DPFatotcap-
DPFatotind-
2700
Lead
Lag
1800
900
00
+P-P
-Q
+Q I
II
III IV
DPF+totind+
DPF+totcap+
DPF+totcap-
DPF+totind-
2700
1800
900
00
+P-P
-Q
+Q I
II
III IV
DPFvtotind+
DPFvtotcap+
DPFvtotcap-
DPFvtotind-

MI 2892 Power Master Introduction
12
DH
1.4.3 Phase harmonics distortion power, including
harmonics distortion power). See 5.1.5
section: Modern Power measurement
Standard compliance: IEEE 1459-2010 for definition.
DeH
Total effective harmonics distortion power. See 5.1.5 section: Total
nonfundamental power measurements for definition.
Dᴠ
1.4.4 Phase voltage distortion power, including Dᴠp
distortion power). See 5.1.5 section: Modern
Power measurement
Standard compliance: IEEE 1459-2010 for definition.
Deᴠtot
1.4.5 Total effective voltage distortion power. See
5.1.5 section: Modern Power measurement
Standard compliance: IEEE 1459-2010 for definition.
Ep

Recorded phase combined (fundamental and nonfundamental)
active energy, including Epp+/-(phase p active energy). Minus sign
indicates generated energy and plus sign indicates consumed
energy. See 5.1.6 for definition.
Eptot

Recorded total combined (fundamental and nonfundamental) active
energy. Minus sign indicates generated and plus sign indicates
consumed energy. See 5.1.6 for definition.
Eq

Recorded phase fundamental reactive energy, including Eqp+/-
(phase p reactive energy). Minus sign indicates generated and plus
sign indicates consumed energy. See 5.1.6 for definition.
Eqtot

Recorded total fundamental reactive energy. Minus sign indicates
generated and plus sign indicates consumed energy. See 5.1.6 for
definition.
f, freq
Frequency, including freqU12 (voltage frequency on U12), freqU1
(voltage frequency on U1and freqI1 (current frequency on I1). See
5.1.4 for definition.
i-
Negative sequence current ratio (%). See 5.1.11 for definition.
i0
Zero sequence current ratio (%). See 5.1.11 for definition.
I+
Positive sequence current component on three phase systems. See
5.1.11 for definition.
I-
Negative sequence current component on three phase systems. See
5.1.11 for definition.
I0
Zero sequence current components on three phase systems. See
5.1.11 for definition.
IRms(1/2)
RMS current measured over 1 cycle, commencing at a fundamental
zero crossing on an associated voltage channel, and refreshed each
half-cycle, including IpRms(1/2) (phase p current), INRms(1/2) (neutral RMS
current)

MI 2892 Power Master Introduction
13
Ifund
Fundamental RMS current Ih1(on 1st harmonics), including Ifundp
(phase p fundamental RMS current) and IfundN(neutral RMS
fundamental current). See 5.1.8 for definition
Ihn
nth current RMS harmonic component including Iphn(phase p; nth
RMS current harmonic component) and INhn(neutral nth RMS current
harmonic component). See 5.1.8 for definition
Iihn
nth current RMS interharmonic component including Ipihn(phase p;
nth RMS current interharmonic component) and INihn(neutral nth
RMS current interharmonic component). See 5.1.8 for definition
INom
Nominal current. Current of clamp-on current sensor for 1 Vrms at
output.
IPk
Peak current, including IpPk (phase p current) including INPk (neutral
peak current)
IRms
RMS current, including IpRms (phase p current), INRms (neutral RMS
current). See 5.1.3 for definition.
 P
Instantaneous phase active combined
(fundamental and nonfundamental)
power, including  Pp(phase p active
power). Minus sign indicates generated
and plus sign indicates consumed
power. See 5.1.5 for definitions.
P

Recorded phase active (fundamental and nonfundamental) power,
including Pp

(phase p active power). Minus sign indicates generated
and plus sign indicates consumed power. See 5.1.5 for definitions.
 Ptot
Instantaneous total active combined
(fundamental and nonfundamental)
power. Minus sign indicates
generated and plus sign indicates
consumed power. See 5.1.5 for
definitions.
Ptot

Recorded total active (fundamental and nonfundamental) power.
Minus sign indicates generated and plus sign indicates consumed
power. See 5.1.5 for definitions.
 Pfund
Instantaneous active fundamental power, including Pfundp(phase
p active fundamental power). Minus sign indicates generated and
plus sign indicates consumed power. See 5.1.5 for definitions.
Pfund+
Recorded phase active fundamental power, including Pfundp

(phase
p active fundamental power). Minus sign indicates generated and
plus sign indicates consumed power. See 5.1.5 for definitions.
2700
Lead
Lag
1800
900
00
+P
-P I
II
III IV
+P-P
2700
Lead
Lag
1800
900
00
+Ptot
I
II
III IV
+Ptot
-Ptot
-Ptot

MI 2892 Power Master Introduction
14
 P+,  P+tot
Instantaneous positive sequence of total active fundamental power.
Minus sign indicates generated and plus sign indicates consumed
power.
See 5.1.5 for definitions.
P+tot

Recorded positive sequence of total active fundamental power.
Minus sign indicates generated and plus sign indicates positive
sequence of consumed power.
See 5.1.5 for definitions.
 PH
Instantaneous phase active harmonic power, including  PHp (phase p
active harmonic power). Minus sign indicates generated and plus
sign indicates consumed power. See 5.1.5 for definitions.
PH

Recorded phase active harmonics power, including PHp

(phase p
active harmonic power). Minus sign indicates generated and plus
sign indicates consumed power. See 5.1.5 for definitions.
 PHtot
Instantaneous total active harmonic power. Minus sign indicates
generated and plus sign indicates consumed power. See 5.1.5 for
definitions.
PHtot

Recorded total active harmonics power. Minus sign indicates
generated and plus sign indicates consumed active power. See 5.1.5
for definitions.
 PFind
 PFcap
Instantaneous phase combined
(fundamental and nonfundamental)
power factor, including  PFpind/cap
(phase p power factor). Minus sign
indicates generated power and plus
sign indicates consumed power.
Suffix ind/cap represents
inductive/capacitive character.
Note: PF= DPF when harmonics are
not present. See 5.1.5 for definition.
PFind

PFcap

Recorded phase combined
(fundamental and nonfundamental)
power factor.
Minus sign indicates generated
power and plus sign indicates
consumed power. Suffix ind/cap
represents inductive/ capacitive
character. This parameter is
recorded separately for each quadrant as shown on figure.
 PFatotind
 PFatotcap
Instantaneous total arithmetic combined (fundamental and
nonfundamental) power factor.
Minus sign indicates generated power and plus sign indicates
consumed power. Suffix ind/cap represents inductive/capacitive
character. See 5.1.6 for definition.
2700
+PFind
Lead
Lag
+PFcap
-PFcap
-PFind
1800
900
00
+P-P
-Q
+Q I
II
III IV
2700
PFind+
Lead
Lag
PFcap+
PFcap-
PFind-
1800
900
00
+P-P
-Q
+Q I
II
III IV

MI 2892 Power Master Introduction
15
PFatotind

PFatotcap

Recorded total arithmetic combined
(fundamental and nonfundamental)
power factor.
Minus sign indicates generated
power and plus sign indicates
consumed power. Suffix ind/cap
represents inductive/capacitive
character. This parameter is recorded
separately for each quadrant as
shown on figure.
 PFetotind
 PFetotcap
Instantaneous total effective combined (fundamental and
nonfundamental) power factor.
Minus sign indicates generated power and plus sign indicates
consumed power. Suffix ind/cap represents inductive/capacitive
character. See 5.1.5 for definition.
PFetotind

PFetotcap

Recorded total effective combined
(fundamental and nonfundamental)
power factor.
Minus sign indicates generated
power and plus sign indicates
consumed power. Suffix ind/cap
represents inductive/capacitive
character. This parameter is
recorded separately for each
quadrant as shown on figure.
 PFvtotind
 PFvtotcap
Instantaneous total vector combined (fundamental and
nonfundamental) power factor.
Minus sign indicates generated power and plus sign indicates
consumed power. Suffix ind/cap represents inductive/capacitive
character. See 5.1.6 for definition.
PFvtotind

PFvtotcap

Recorded total vector combined
(fundamental and nonfundamental)
power factor.
Minus sign indicates generated power
and plus sign indicates consumed
power. Suffix ind/cap represents
inductive/capacitive character. This
parameter is recorded separately for
each quadrant as shown on figure.
Plt
Phase long term flicker (2 hours), including Pltpg (phase p to phase g
long term voltage flicker) and Pltp (phase p to neutral long term
voltage flicker). See 5.1.10 for definition.
Pst
Short term flicker (10 minutes) including Pstpg (phase p to phase g
short term voltage flicker) and Pstp (phase p to neutral voltage
flicker). See 5.1.10 for definition.
2700
PFetotind+
Lead
Lag
PFetotcap+
PFetotcap-
PFetotind-
1800
900
00
+P-P
-Q
+Q I
II
III IV
2700
PFatotind+
PFatotcap+
PFatotcap-
PFatotind-
1800
900
00
+P-P
-Q
+Q I
II
III IV
2700
PFvtotind+
PFvtotcap+
PFvtotcap-
PFvtotind-
1800
900
00
+P-P
-Q
+Q I
II
III IV

MI 2892 Power Master Introduction
16
Pst(1min)
Short term flicker (1 minute) including Pst(1min)pg (phase p to phase g
short term voltage flicker) and Pst(1min)p (phase p to neutral voltage
flicker). See 5.1.10 for definition.
Pinst
Instantaneous flicker including Pinstpg (phase p to phase g
instantaneous voltage flicker) and Pinstp (phase p to instantaneous
voltage flicker). See 5.1.10 for definition.
 N
Instantaneous combined (fundamental and nonfundamental)
nonactive phase power including  Np(phase p nonactive phase
power). Minus sign indicates generated and plus sign indicate
consumed nonactive power. See 5.1.5 for definition.
Nind

Ncap

Recorded phase combined
(fundamental and nonfundamental)
nonactive power including Ncap/indp
(phase p nonactive phase power).
Suffix ind/cap represents
inductive/capacitive character. Minus
sign indicates generated and plus sign
indicates consumed fundamental
reactive power. This parameter is
recorded separately for each quadrant as shown on figure. See 5.1.5
for definition.
 Ntot
Instantaneous combined (fundamental and nonfundamental)
nonactive total vector power. Minus sign indicates generated and
plus sign indicate consumed nonactive power. See 5.1.5 for
definition.
Ntotind

Ntotcap

Recorded total vector combined
(fundamental and nonfundamental)
nonactive power. Suffix ind/cap
represents inductive/capacitive
character. Minus sign indicates
generated and plus sign indicates
consumed combined nonactive
power. This parameter is recorded
separately for each quadrant as
shown on figure. See 5.1.5 for definition.
 Natot
Instantaneous combined (fundamental and nonfundamental)
nonactive total arithmetic power. Minus sign indicates generated
and plus sign indicate consumed nonactive power. See 5.1.6 for
definition.
Natotind

Natotcap

Recorded total arithmetic combined (fundamental and
nonfundamental) nonactive power. Minus sign indicates generated
and plus sign indicates consumed combined nonactive power. This
parameter is recorded separately for generated and consumed
nonactive power.
 Qfund
Instantaneous fundamental reactive phase power including  Qp
(phase p reactive phase power). Minus sign indicates generated and
plus sign indicates consumed fundamental reactive power. See 5.1.5
for definition.
2700
Nind+
Lead
Lag
Ncap-
Ncap+
Nind-
1800
900
00
+P-P
-Q
+Q I
II
III IV
2700
Ntotcap+
Ntotcap-
Ntotcap+
Ntotcap-
1800
900
00
+P-P
-Q
+Q I
II
III IV

MI 2892 Power Master Introduction
17
Qfundind

Qfundcap

Recorded phase fundamental reactive
power. Suffix ind/cap represents
inductive/capacitive character. Minus
sign indicates generated and plus sign
indicates consumed fundamental
reactive power. This parameter is
recorded separately for each
quadrant as shown on figure. See
5.1.5 for definition.
 Qvfundtot
Instantaneous fundamental total vector reactive power. Minus sign
indicates generated and plus sign indicates consumed fundamental
reactive power. See 5.1.6 for definition.
Qvfundtotind

Qvfundtotcap

Recorded total fundamental vector
reactive power. Suffix ind/cap
represents inductive/capacitive
character. Minus sign indicates
generated and plus sign indicates
consumed fundamental reactive
power. This parameter is recorded
separately for each quadrant as
shown on figure. See 5.1.6 for
definition.
Qafundtot
Instantaneous fundamental total arithmetic reactive power. See
5.1.6 for definition.
Qafundtot
Qafundtot
Recorded fundamental total arithmetic reactive power. See 5.1.6
for definition.
 Q+totcap
 Q+totind
Instantaneous positive sequence of total fundamental reactive
power. Suffix ind/cap represents inductive/ capacitive character.
Minus sign indicates generated and plus sign indicates consumed
reactive power. See 5.1.5 for definition.
Q+totind

Q+totcap

Recorded positive sequence of total fundamental reactive power.
Suffix ind/cap represents inductive/capacitive character. Minus sign
indicates generated and plus sign indicates consumed reactive
power. This parameter is recorded separately for each quadrant.
S
Combined (fundamental and nonfundamental) phase apparent
power including Sp(phase p apparent power). See 5.1.5 for
definition.
Satot
Combined (fundamental and nonfundamental) total arithmetic
apparent power. See 5.1.6 for definition.
Setot
Combined (fundamental and nonfundamental) total effective
apparent power. See 5.1.5 for definition.
Svtot
Combined (fundamental and nonfundamental) total vector
apparent power. See 5.1.6 for definition.
2700
Qind+
Lead
Lag
Qcap-
Qcap+
Qind-
1800
900
00
+P-P
-Q
+Q I
II
III IV
2700
Qfundtotcap+
Qfundtotcap-
Qfundtotcap+
Qfundtotcap-
1800
900
00
+P-P
-Q
+Q I
II
III IV

MI 2892 Power Master Introduction
18
Sfund
Phase fundamental apparent power, including Sfundp(phase p
fundamental apparent power). See 5.1.5 for definition.
Safundtot
Fundamental total arithmetic apparent power. See 5.1.6 for
definition.
Svfundtot
Fundamental total vector apparent power. See 5.1.6 for definition.
S+tot
Positive sequence of total fundamental apparent power. See 5.1.5
for definition.
Sᴠfundtot
Unbalanced fundamental apparent power. See 5.1.5 for definition.
Sɴ
Phase nonfundamental apparent power, including Sɴp(phase p
nonfundamental apparent power). See 5.1.5 for definition.
Seɴ
Total nonfundamental effective apparent power. See 5.1.5 for
definition.
Sн
Phase harmonic apparent power, including Sнp(phase p harmonic
apparent power). See 5.1.5 for definition.
Seнtot
Total harmonic effective apparent power. See 5.1.5 for definition.
THDI
Total harmonic distortion current (in % or A), including THDIp (phase
p current THD) and THDIN (neutral current THD). See 5.1.8 for
definition
THDU
Total harmonic distortion voltage related (in % or V) including
THDUpg (phase p to phase g voltage THD) and THDUp (phase p to
neutral voltage THD). See 5.1.11 for definition.
u-
Negative sequence voltage ratio (%). See 5.1.11 for definition.
u0
Zero sequence voltage ratio (%). See 5.1.11 for definition.
U, URms
RMS voltage, including Upg (phase p to phase g voltage) and Up
(phase p to neutral voltage). See 5.1.2 for definition.
U+
Positive sequence voltage component on three phase systems. See
5.1.11 for definition.
U-
Negative sequence voltage component on three phase systems. See
5.1.11 for definition.
U0
Zero sequence voltage component on three phase systems. See
5.1.11 for definition.
UDip
Minimal URms(1/2) voltage measured during dip occurrence
Ufund
Fundamental RMS voltage (Uh1 on 1st harmonics), including Ufundpg
(phase p to phase g fundamental RMS voltage) and Ufundp(phase p
to neutral fundamental RMS voltage). See 5.1.8 for definition
UhN,
nth voltage RMS harmonic component including UpghN(phase p to
phase g voltage nth RMS harmonic component) and UphN(phase p to
neutral voltage nth RMS harmonic component). See 5.1.8 for
definition.
UihN
nth voltage RMS interharmonic voltage component including UpgihN
(phase p to phase g voltage nth RMS interharmonic component) and
UpihN(phase p to neutral voltage nth RMS interharmonic
component). See 5.1.8 for definition.

MI 2892 Power Master Introduction
19
UInt
Minimal URms(1/2) voltage measured during interrupt occurrence.
UNom
Nominal voltage, normally a voltage by which network is designated
or identified.
UOver
Voltage overdeviation, difference between the measured value and
the nominal value of a voltage, only when the measured value is
greater than the nominal value. Voltage overdeviation measured
over recorded interval, expressed in % of nominal voltage including
UpgOver (phase p to phase g voltage) and UpOver (phase p to neutral
voltage). See 5.1.12 for details.
UPk
Peak voltage, including UpgPk (phase p to phase g voltage) and UpPk
(phase p to neutral voltage)
URms(1/2)
RMS voltage refreshed each half-cycle, including UpgRms(1/2) (phase p
to phase g half-cycle voltage) and UpRms(1/2) (phase p to neutral half-
cycle voltage). See 5.1.12 for definition.
USwell
Maximal URms(1/2) voltage measured during swell occurrence.
USig
Mains signalling RMS voltage, including USigpg (phase p to phase g
half-cycle signalling voltage) and USigp(phase p to neutral half-cycle
signalling voltage). Signalling is a burst of signals, often applied at a
non-harmonic frequency, that remotely control equipment. See
5.2.6 for details.
UUnder
Voltage underdeviation, difference between the measured value
and the nominal value of a voltage, only when the voltage is lower
than the nominal value. Voltage underdeviation measured over
recorded interval and expressed in % of nominal voltage, including
UpgUnder (phase p to phase g voltage) and UpUnder (phase p to neutral
voltage). See 5.1.12 for details.
∆Umax
Maximum absolute difference between any of the URms(1/2) values
during the RVC event and the final arithmetic mean 100/120 URms(1/2)
value just prior to the RVC event. For poly-phase systems, the ∆Umax
is the largest ∆Umax on any channel. See 5.1.15 for details.
∆Uss
Absolute difference between the final arithmetic mean
100/120 URms(1/2) value just prior to the RVC event and the first
arithmetic mean 100/120 URms(1/2) value after the RVC event. For
poly-phase systems, the ∆Uss is the largest ∆Uss on any channel. See
5.1.15 for details.

MI 2892 Power Master Description
20
2Description
2.1 Front panel
1
2
3
4
5
9
7
8
6
Figure 2.1: Front panel
Front panel layout:
1. LCD
Colour TFT display, 4.3 inch, 480 x 272 pixels.
2. F1 –F4
Function keys.
3. ARROW keys
Moves cursor and select parameters.
4. ENTER key
Step into submenu.
5. ESC key
Exits any procedure, confirms new settings.
6. SHORTCUT keys
Quick access to main instrument functions.
7. LIGHT key
(BEEP OFF)
Adjust LCD backlight intensity: high/low//off
If the LIGHT key is pressed for more than 1.5 seconds, beeper will be
disabled. Press & hold again to enable it.
8. ON-OFF key
Turns on/off the instrument.
9. COVER
Communication ports and microSD card slot protection.