Power Master
MI 2892
Instruction manual
Version 1.1, 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: metrel@metrel.si
Mark on your equipment certifies that this equipment meets the requirements of the EU
(European Union) concerning safety and interference causing equipment regulations
© 2013 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
1 Introduction ............................................................................................................. 7
1.1 Main Features ................................................................................................... 7
1.2 Safety considerations ........................................................................................ 8
1.3 Applicable standards ......................................................................................... 9
1.4 Abbreviations ................................................................................................... 10
2 Description ............................................................................................................ 19
2.1 Front panel ...................................................................................................... 19
2.2 Connector panel .............................................................................................. 20
2.3 Bottom view ..................................................................................................... 21
2.4 Accessories ..................................................................................................... 21
2.4.1 Standard accessories ............................................................................... 21
2.4.2 Optional accessories ................................................................................ 21
3 Operating the instrument ..................................................................................... 22
3.1 Instrument status bar ....................................................................................... 23
3.2 Instrument keys ............................................................................................... 24
3.3 Instrument memory (microSD card) ................................................................ 24
3.4 Instrument Main Menu ..................................................................................... 25
3.4.1 Instrument submenus ............................................................................... 26
3.5 U, I, f ................................................................................................................ 28
3.5.1 Meter ........................................................................................................ 28
3.5.2 Scope ....................................................................................................... 30
3.5.3 Trend ........................................................................................................ 32
3.6 Power .............................................................................................................. 34
3.6.1 Meter ........................................................................................................ 34
3.6.2 Trend ........................................................................................................ 36
3.7 Energy ............................................................................................................. 39
3.7.1 Meter ........................................................................................................ 39
3.7.2 Trend ........................................................................................................ 40
3.8 Harmonics / interharmonics ............................................................................. 41
3.8.1 Meter ........................................................................................................ 41
3.8.2 Histogram (Bar) ........................................................................................ 43
3.8.3 Trend ........................................................................................................ 45
3.9 Flickers ............................................................................................................ 47
3.9.1 Meter ........................................................................................................ 47
3.9.2 Trend ........................................................................................................ 48
3.10 Phase Diagram ................................................................................................ 50
3.10.1 Phase diagram ......................................................................................... 50
3.10.2 Unbalance diagram .................................................................................. 51
3.10.3 Unbalance trend ....................................................................................... 52
3.11 Temperature .................................................................................................... 53
3.11.1 Meter ........................................................................................................ 53
3.11.2 Trend ........................................................................................................ 54
3.12 Signalling ......................................................................................................... 54
3.12.1 Meter ........................................................................................................ 55
3.12.2 Trend ........................................................................................................ 56
3.13 General Recorder ............................................................................................ 57
3.14 Waveform/inrush recorder ............................................................................... 58
3.14.1 Setup ........................................................................................................ 58
3.14.2 Capturing waveform ................................................................................. 59
3.14.3 Captured waveform .................................................................................. 61
MI 2892 Power Master Table of contents
4
3.15 Transient recorder ........................................................................................... 62
3.15.1 Setup ........................................................................................................ 62
3.15.2 Capturing transients ................................................................................. 63
3.15.3 Captured transients .................................................................................. 65
3.16 Events table ..................................................................................................... 66
3.17 Alarms table .................................................................................................... 70
3.18 Memory List ..................................................................................................... 72
3.18.1 General Record ........................................................................................ 73
3.18.2 Waveform snapshot ................................................................................. 76
3.18.3 Waveform/inrush record ........................................................................... 78
3.18.4 Transients record ..................................................................................... 78
3.19 Measurement Setup submenu ........................................................................ 78
3.19.1 Connection setup ..................................................................................... 79
3.19.2 Event setup .............................................................................................. 82
3.19.3 Alarm setup .............................................................................................. 82
3.19.4 Signalling setup ........................................................................................ 84
3.20 General Setup submenu .................................................................................. 84
3.20.1 Communication ........................................................................................ 85
3.20.2 Time & Date ............................................................................................. 86
3.20.3 Time & Date ............................................................................................. 86
3.20.4 Language ................................................................................................. 87
3.20.5 Instrument info ......................................................................................... 88
3.20.6 Lock/Unlock .............................................................................................. 88
3.20.7 Colour model ............................................................................................ 90
4 Recording Practice and Instrument Connection ............................................... 92
4.1 Measurement campaign .................................................................................. 92
4.2 Connection setup ............................................................................................ 96
4.2.1 Connection to the LV Power Systems ...................................................... 96
4.2.2 Connection to the MV or HV Power System ........................................... 100
4.2.3 Current clamp selection and transformation ratio setting ....................... 101
4.2.4 Temperature probe connection .............................................................. 105
4.2.5 GPS time synchronization device connection ........................................ 105
4.3 Remote instrument connection (over Internet) .............................................. 106
4.3.1 Communication principle ........................................................................ 106
4.3.2 Instrument setup on remote measurement site ...................................... 107
4.3.3 PowerView setup for instrument remote access .................................... 108
4.3.4 Remote connection ................................................................................ 110
4.4 Number of measured parameters and connection type relationship ............. 121
5 Theory and internal operation ........................................................................... 123
5.1 Measurement methods .................................................................................. 123
5.1.1 Measurement aggregation over time intervals ....................................... 123
5.1.2 Voltage measurement (magnitude of supply voltage) ............................ 123
5.1.3 Current measurement (magnitude of supply current) ............................. 124
5.1.4 Frequency measurement ....................................................................... 125
5.1.5 Power measurement (Standard compliance: IEEE 1459-2010) ............. 125
5.1.6 Energy .................................................................................................... 131
5.1.7 Harmonics and interharmonics ............................................................... 132
5.1.8 Signalling ................................................................................................ 134
5.1.9 Flickers ................................................................................................... 135
5.1.10 Voltage and current unbalance .............................................................. 136
MI 2892 Power Master Table of contents
5
5.1.11 Voltage events ....................................................................................... 136
5.1.12 Alarms .................................................................................................... 139
5.1.13 Data aggregation in GENERAL RECORDING ....................................... 139
5.1.14 Waveform snapshot ............................................................................... 142
5.1.15 Waveform record .................................................................................... 143
5.1.16 Transient recorder .................................................................................. 144
5.2 EN 50160 Standard Overview ....................................................................... 145
5.2.1 Power frequency .................................................................................... 145
5.2.2 Supply voltage variations ....................................................................... 146
5.2.3 Supply voltage unbalance ...................................................................... 146
5.2.4 THD voltage and harmonics ................................................................... 146
5.2.5 Interharmonic voltage ............................................................................. 146
5.2.6 Mains signalling on the supply voltage ................................................... 147
5.2.7 Flicker severity ....................................................................................... 147
5.2.8 Voltage dips ........................................................................................... 147
5.2.9 Voltage swells ........................................................................................ 148
5.2.10 Short interruptions of the supply voltage ................................................ 148
5.2.11 Long interruptions of the supply voltage ................................................. 148
5.2.12 Power Master recorder setting for EN 50160 survey .............................. 148
6 Technical specifications .................................................................................... 149
6.1 General specifications ................................................................................... 149
6.2 Measurements ............................................................................................... 149
6.2.1 General description ................................................................................ 149
6.2.2 Phase Voltages ...................................................................................... 150
6.2.3 Line voltages .......................................................................................... 151
6.2.4 Current ................................................................................................... 151
6.2.5 Frequency .............................................................................................. 153
6.2.6 Flickers ................................................................................................... 153
6.2.7 Combined power .................................................................................... 153
6.2.8 Fundamental power ................................................................................ 153
6.2.9 Nonfundamental power .......................................................................... 154
6.2.10 Power factor (PF) ................................................................................... 155
6.2.11 Displacement factor (DPF) or Cos φ) ..................................................... 155
6.2.12 Energy .................................................................................................... 155
6.2.13 Voltage harmonics and THD .................................................................. 156
6.2.14 Current harmonics and THD .................................................................. 156
6.2.15 Voltage interharmonics ........................................................................... 156
6.2.16 Current interharmonics ........................................................................... 156
6.2.17 Signalling ................................................................................................ 157
6.2.18 Unbalance .............................................................................................. 157
6.2.19 Time and duration uncertainty ................................................................ 157
6.2.20 Temperature probe ................................................................................. 157
6.3 Recorders ...................................................................................................... 158
6.3.1 General recorder .................................................................................... 158
6.3.2 Waveform/inrush recorder ...................................................................... 158
6.3.3 Waveform snapshot ............................................................................... 159
6.3.4 Transients recorder ................................................................................ 159
6.4 Standards compliance ................................................................................... 159
6.4.1 Compliance to the IEC 61557-12 ........................................................... 159
6.4.2 Compliance to the to the IEC 61000-4-30 .............................................. 160
MI 2892 Power Master Table of contents
6
7 Maintenance ........................................................................................................ 161
7.1 Inserting batteries into the instrument ........................................................... 161
7.2 Batteries ........................................................................................................ 162
7.3 Power supply considerations ......................................................................... 163
7.4 Cleaning ........................................................................................................ 164
7.5 Periodic calibration ........................................................................................ 164
7.6 Service .......................................................................................................... 164
7.7 Troubleshooting ............................................................................................. 164
MI 2892 Power Master Introduction
7
1 Introduction
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 62053-22 (Energy).
MI 2892 Power Master Introduction
8
4.3’’ TFT colour display, easy internet remote access over Ethernet.
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.
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.
o PowerView 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.
o User can easily download recorded data, and organize it into multiple sites
with many sub-sites or locations.
o Generate charts, tables and graphs for your power quality data analysing,
and create professional printed reports.
o Export or copy / paste data to other applications (e.g. spreadsheet) for
further analysis.
o Multiple data records can be displayed and analysed simultaneously.
Merge 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.
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.
MI 2892 Power Master Introduction
9
Maximum nominal voltage between any phase and neutral input is 1000 V
RMS
.
Maximum nominal voltage between phases is 1730 V
RMS
.
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: 2008 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 –
MI 2892 Power Master Introduction
10
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
IEC 62053-22 : 2003 Part 22: Static meters for active energy (Class
0.5S)
IEC 62053-23 : 2003 Part 22: 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
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:
CF
I
Current crest factor, including CF
Ip
(phase p current crest
factor) and CF
IN
(neutral current crest factor). See 5.1.3
for definition.
CF
U
Voltage crest factor, including CF
Upg
(phase p to phase g
voltage crest factor) and CF
Up
(phase p to neutral voltage
crest factor). See 5.1.2 for definition.
DPF
ind/cap
Instantaneous phase power displacement (fundamental)
power factor or cos , including DPFp
ind
(phase p power
displacement).
Minus sign indicates generated power and plus sign
indicates consumed power. Suffix ind/cap represents
inductive/capacitive character.
MI 2892 Power Master Introduction
11
DPF
ind/cap
Recorded phase displacement (fundamental) power
factor or cos , including DPFp
ind/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.
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 effective
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
Phase current distortion power, including Dıp (phase p
current distortion power). See 5.1.5 section: Power
measurement (Standard compliance: IEEE 1459-2010)
for definition.
Deı
tot
Total effective current distortion power. See 5.1.5 section:
Power measurement (Standard compliance: IEEE 1459-
2010) for definition.
DH
Phase harmonics distortion power, including DHp (phase
p harmonics distortion power). See 5.1.5 section: 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
Phase voltage distortion power, including Dᴠp (phase p
voltage distortion power). See 5.1.5 section: Power
measurement (Standard compliance: IEEE 1459-2010)
for definition.
Deᴠ
tot
Total effective voltage distortion power. See 5.1.5
27
0
0
DPFind+
DPFcap+
DPFcap-
DPFind-
180
0
90
0
0
0
+P-P
-Q
+Q
I
II
III IV
27
0
0
L
e
a
d
L
a
g
180
0
90
0
0
0
+P-P
-Q
+Q
I
II
III IV
DPF
+
totind+
DPF
+
totcap+
DPF
+
totcap-
DPF
+
totind-
MI 2892 Power Master Introduction
12
section: Power measurement (Standard compliance:
IEEE 1459-2010) for definition.
Ep
Recorded phase combined (fundamental and
nonfundamental) active energy, including Ep
p
+/-
(phase p
active energy). Minus sign indicates generated energy
and plus sign indicates consumed energy. See 5.1.6 for
definition.
Ep
tot
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
Eq
p
+/-
(phase p reactive energy). Minus sign indicates
generated and plus sign indicates consumed energy. See
5.1.6 for definition.
Eq
tot
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 freq
U12
(voltage frequency on U12),
freqU1 (voltage frequency on U1 and freqI1 (current
frequency on I1). See 5.1.4 for definition.
i-
Negative sequence current ratio (%). See 5.1.10 for
definition.
i0
Zero sequence current ratio (%). See 5.1.10 for definition.
I
+
Positive sequence current component on three phase
systems. See 5.1.10 for definition.
I-
Negative sequence current component on three phase
systems. See 5.1.10 for definition.
I0
Zero sequence current components on three phase
systems. See 5.1.10 for definition.
I
Rms½
RMS current measured over each half period , including
I
p
Rms½
(phase p current), I
N
Rms½
(neutral RMS current)
Ifund
Fundamental RMS current Ih1 (on 1st harmonics),
including Ifundp (phase p fundamental RMS current) and
IfundN (neutral RMS fundamental current). See 5.1.7 for
definition
Ih
n
nth current RMS harmonic component including Iph
n
(phase p; nth RMS current harmonic component) and INh
n
(neutral nth RMS current harmonic component). See 5.1.7
for definition
Iih
n
nth current RMS interharmonic component including Ipih
n
(phase p; nth RMS current interharmonic component) and
I
Nihn
(neutral n
th
RMS current interharmonic component).
See 5.1.7 for definition
MI 2892 Power Master Introduction
13
I
Nom
Nominal current. Current of clamp-on current sensor for 1
Vrms at output.
I
Pk
Peak current, including IpPk (phase p current) including INPk
(neutral peak current)
I
Rms
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 P
p
(phase p active
power). Minus sign indicates generated and plus sign
indicates consumed power. See 5.1.5 for definitions.
P
tot
Instantaneous total active
combined (fundamental and
nonfundamental) power. Minus
sign indicates generated and
plus sign indicates consumed
power. See 5.1.5 for definitions.
P
tot
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
Pfund
p
(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
Pfund
p
(phase p active fundamental power). Minus sign
indicates generated and plus sign indicates consumed
power. See 5.1.5 for definitions.
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.
27
0
0
L
e
a
d
180
0
90
0
0
0
+P
-P
I
II
III IV
+P-P
27
0
0
L
e
a
d
180
0
90
0
0
0
+Ptot
I
II
III IV
+Ptot
-Ptot
-Ptot
MI 2892 Power Master Introduction
14
P
H
Instantaneous phase active harmonic power, including
P
Hp
(phase p active harmonic power). Minus sign
indicates generated and plus sign indicates consumed
power. See 5.1.5 for definitions.
P
H
Recorded phase active harmonics power, including P
Hp
(phase p active harmonic power). Minus sign indicates
generated and plus sign indicates consumed power. See
5.1.5 for definitions.
P
Htot
Instantaneous total active harmonic power. Minus sign
indicates generated and plus sign indicates consumed
power. See 5.1.5 for definitions.
P
Htot
Recorded total active harmonics power. Minus sign
indicates generated and plus sign indicates consumed
active power. See 5.1.5 for definitions.
PF
ind
PF
cap
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.
PF
ind
PF
cap
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.
PFe
totind
PFe
totcap
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.
27
0
0
+PFind
+PFcap
-PFcap
-PFind
180
0
90
0
0
0
+P-P
-Q
+Q
I
II
III IV
27
0
0
PFind
+
PFcap
+
PFcap
-
PFind
-
180
0
90
0
0
0
+P-P
-Q
+Q
I
II
III IV
MI 2892 Power Master Introduction
15
PFe
totind
PFe
totcap
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.
P
lt
Phase long term flicker (2 hours), including P
ltpg
(phase p
to phase g long term voltage flicker) and P
ltp
(phase p to
neutral long term voltage flicker). See 5.1.9 for definition.
Pst
Short term flicker (10 minutes) including P
stpg
(phase p to
phase g short term voltage flicker) and P
stp
(phase p to
neutral voltage flicker). See 5.1.9 for definition.
P
st(1min)
Short term flicker (1 minute) including P
st(1min)pg
(phase p
to phase g short term voltage flicker) and P
st(1min)p
(phase
p to neutral voltage flicker). See 5.1.9 for definition.
P
inst
Instantaneous flicker including P
instpg
(phase p to phase g
instantaneous voltage flicker) and P
instp
(phase p to
instantaneous voltage flicker). See 5.1.9 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.
N
ind
N
cap
Recorded phase combined
(fundamental and
nonfundamental) nonactive
power including N
cap/ind
p
(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.
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.
27
0
0
PFetotind
+
L
e
a
d
L
a
g
PFetotcap
+
PFetotcap
-
PFetotind
-
180
0
90
0
0
0
+P-P
-Q
+Q
I
II
III IV
27
0
0
Nind
+
L
e
a
d
L
a
g
Ncap
-
Ncap
+
Nind
-
180
0
90
0
0
0
+P-P
-Q
+Q
I
II
III IV
MI 2892 Power Master Introduction
16
Qfund
ind
Qfund
cap
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.
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.
Se
tot
Combined (fundamental and nonfundamental) total
effective apparent power. See 5.1.5 for definition.
Sfund
Phase fundamental apparent power, including Sfundp
(phase p fundamental apparent power). See 5.1.5 for
definition.
S
+
tot
Positive sequence of total fundamental effective apparent
power. See 5.1.5 for definition.
Sᴜfund
tot
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.
Seн
tot
Total harmonic effective apparent power. See 5.1.5 for
definition.
THD
I
Total harmonic distortion current (in % or A), including
THD
Ip
(phase p current THD) and THD
IN
(neutral current
THD). See 5.1.7 for definition
27
0
0
Qind
+
L
e
a
d
L
a
g
Qcap
-
Qcap
+
Qind
-
180
0
90
0
0
0
+P-P
-Q
+Q
I
II
III IV
MI 2892 Power Master Introduction
17
THDU
Total harmonic distortion voltage related (in % or V)
including THD
Upg
(phase p to phase g voltage THD) and
THDUp (phase p to neutral voltage THD). See 5.1.10 for
definition.
u-
Negative sequence voltage ratio (%). See 5.1.10 for
definition.
u0
Zero sequence voltage ratio (%). See 5.1.10 for
definition.
U, U
Rms
RMS voltage, including U
pg
(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 5.1.10 for definition.
U-
Negative sequence voltage component on three phase
systems. See 5.1.10 for definition.
U0
Zero sequence voltage component on three phase
systems. See 5.1.10 for definition.
U
Di
p
Minimal U
Rms½
voltage measured during dip occurrence
Ufund
Fundamental RMS voltage (Uh1 on 1st harmonics),
including Ufund
pg
(phase p to phase g fundamental RMS
voltage) and Ufundp (phase p to neutral fundamental RMS
voltage). See 5.1.7 for definition
UhN,
nth voltage RMS harmonic component including Upgh
N
(phase p to phase g voltage nth RMS harmonic
component) and Uph
N
(phase p to neutral voltage n
th
RMS
harmonic component). See 5.1.7 for definition.
UihN
n
th
voltage RMS interharmonic component including
Upgih
N
(phase p to phase g voltage n
th
RMS interharmonic
component) and U
pihN
(phase p to neutral voltage n
th
RMS interharmonic component). See 5.1.7 for definition.
Nth RMS interharmonic voltage component measured
between phases. See 5.1.7 for definition.
U
Int
Minimal U
Rms½
voltage measured during interrupt
occurrence.
U
Nom
Nominal voltage, normally a voltage by which network is
designated or identified.
U
Pk
Peak voltage, including U
pgPk
(phase p to phase g
voltage) and U
pPk (phase p to neutral voltage)
U
Rms½
RMS voltage refreshed each half-cycle, including U
pgRms½
(phase p to phase g half-cycle voltage) and Up
Rms½
(phase p to neutral half-cycle voltage). See 5.1.11 for
definition.
MI 2892 Power Master Introduction
18
U
Swell
Maximal U
Rms½
voltage measured during swell
occurrence.
U
Sig
Mains signalling RMS voltage, including U
Sigpg
(phase p to
phase g half-cycle signalling voltage) and U
Sig
p (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.
MI 2892 Power Master Description
19
2 Description
2.1 Front panel
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)
High intensity LCD backlight on/off
If the LIGHT key is pressed for more than 1.5 seconds,
beeper will be disabled. Press & hold again to enable it.
MI 2892 Power Master Description
20
8. ON-OFF key
Turns on/off the instrument.
9. COVER
Communication ports and microSD card slot protection.
2.2 Connector panel
Warnings!
Use safety test leads only!
Max. permissible nominal voltage
between voltage input terminals and
ground is 1000 V
RMS
!
Max. short-term voltage of external power
supply adapter is 14 V!
Figure 2.2: Top connector panel
Top connector panel layout:
1 Clamp-on current transformers (I1, I2, I3, IN ) input terminals.
2 Voltage (L1, L2, L3, N, GND) input terminals.
3 12 V external power socket.
Figure 2.3: Side connector panel
Side connector panel layout:
1 MicroSD card slot.
2 PS/2 – RS232 / GPS serial connector.
3 Ethernet connector.
4 USB connector.
MI 2892 Power Master Description
21
2.3 Bottom view
Figure 2.4: Bottom view
Bottom view layout:
1. Battery compartment cover.
2. Battery compartment screw (unscrew to replace the batteries).
3. Serial number label.
2.4 Accessories
2.4.1 Standard accessories
Table 2.1: Power Master standard accessories
Description Pieces
Flexible current clamp 3000 A / 300 A / 30 A (A 1227) 4
Temperature probe (A 1354) 1
Colour coded test probe 5
Colour coded crocodile clip 5
Colour coded voltage measurement lead 5
USB cable 1
RS232 cable 1
Ethernet cable 1
12 V / 1.2 A Power supply adapter 1
NiMH rechargeable battery, type HR 6 (AA) 6
Soft carrying bag 1
Instruction manual 1
Compact disc (CD) with PowerView v3.0 and manuals 1
2.4.2 Optional accessories
See the attached sheet for a list of optional accessories that are available on request
from your distributor.
MI 2892 Power Master Operating the instrument
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3 Operating the instrument
This section describes how to operate the instrument. The instrument front panel
consists of a colour LCD display and keypad. Measured data and instrument status are
shown on the display. Basic display symbols and keys description is shown on figure
below.
Figure 3.1: Display symbols and keys description
During measurement campaign various screens can be displayed. Most screens share
common labels and symbols. These are shown on figure below.
Figure 3.2: Common display symbols and labels during measurement campaign
MI 2892 Power Master Operating the instrument
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3.1 Instrument status bar
Instruments status bar is placed on the top of the screen. It indicates different
instrument states. Icon descriptions are shown on table below.
Figure 3.3: Instrument status bar
Table 3.1: Instrument status bar description
Indicates battery charge level.
Indicates that charger is connected to the instrument. Batteries will be
charged automatically when charger is present.
Instrument is locked (see section 3.20.6 for details).
AD converter over range. Selected Nominal voltage or current clamps
range is too small.
09:19
Current time.
GPS module status (Optional accessory A 1355):
GPS module detected but reporting invalid time and position data.
(Searching for satellites or too weak satellite signal).
GPS time valid – valid satellite GPS time signal.
Internet connection status (see section 4.3 for details):
Internet connection is not available.
Instrument is connected to the internet and ready for communication.
Instrument is connected to the PowerView.
Recorder status:
General recorder is active, waiting for trigger.
General recorder is active, recording in progress.
Waveform recorder is active, waiting for trigger.
Waveform recorder is active, recording in progress.
Transient recorder is active, waiting for trigger.
Transient recorder is active, recording in progress.
Memory list recall. Shown screen is recalled from instrument memory.
MI 2892 Power Master Operating the instrument
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3.2 Instrument keys
Instrument keyboard is divided into four subgroups:
- Function keys
- Shortcut keys
- Menu/zoom manipulation keys: Cursors, Enter, Escape
- Other keys: Light and Power on/off keys
Function keys are multifunctional. Their current
function is shown at the bottom of the screen and depends on selected instrument
function.
Shortcut keys are shown in table below. They provide quick access to the most
common instrument functions.
Table 3.2: Shortcut Keys functions
Shows UIF Meter screen from MEASUREMENT submenu
Shows Power meter screen from MEASUREMENT submenu
Shows Harmonics meter screen from MEASUREMENT submenu
Shows Connection Setup screen from MEASUREMENT SETUP
submenu
Shows Phase diagram screen from MEASUREMENT submenu
Hold key for 2 seconds to trigger WAVEFORM SNAPSHOT.
Instrument will record all measured parameters into file, which can be
then analysed by PowerView.
Hold key for 2 s to disable/enable sound signals.
Cursor, Enter and Escape keys are used for moving through instrument menu structure,
entering various parameters. Additionally, cursor keys are used for zooming graphs and
moving graph cursors.
key is used to set backlight intensity (low/high). Additionally, by holding key
pressed, user can enable/disable beeper.
key is used to switch On/off the instrument.
3.3 Instrument memory (microSD card)
Power master use microSD card for storing records. Prior instrument use, microSD card
should be formatted to a single partition FAT32 file system and inserted into the
instrument, as shown on figure below.
F1
F2 F3
F4
MI 2892 Power Master Operating the instrument
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Figure 3.4: Inserting microSD card
1. Open instrument cover
2. Insert microSD card into a slot on the instrument (card should be putted
upside down, as shown on figure)
3. Close instrument cover
Note: Do not turn off the instrument while miroSD card is accessed:
- during record session
- observing recorded data in MEMORY LIST menu
Doing so may cause data corruption, and permanent data lost.
Note: SD Card should have single FAT32 partition. Do not use SD cards with multiple
partitions.
3.4 Instrument Main Menu
After powering on the instrument the “MAIN MENU” is displayed. From this menu all
instrument functions can be selected.
MI 2892 Power Master Operating the instrument
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Figure 3.5: “MAIN MENU”
Table 3.3: Instrument Main menu
MEASUREMENT submenu. Provide access to various instrument
measurement screens
RECORDER submenu. Provide access to instrument recorders
configuration and storage.
MEASUREMENT SETUP submenu. Provide access to the
measurement settings.
GENERAL SETUP submenu. Provide access to the various instrument
settings.
Table 3.4: Keys in Main menu
Selects submenu.
Enters selected submenu.
3.4.1 Instrument submenus
By pressing ENTER key in Main menu, user can select one of four submenus:
Measurements – set of basic measurement screens,
Recorders – setup and view of various recordings,
Measurement setup – measurement parameters setup,
General setup – configuring common instrument settings.
List of all submenus with available functions are presented on following figures.
ENTER
MI 2892 Power Master Operating the instrument
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Figure 3.6: Measurements submenu
Figure 3.7: Recorders submenu
Figure 3.8: Measurement setup submenu
MI 2892 Power Master Operating the instrument
28
Figure 3.9: General setup submenu
Table 3.5: Keys in submenus
Selects function within each submenu.
Enters selected function.
Returns to the “MAIN MENU”.
3.5 U, I, f
Voltage, current and frequency parameters can be observed in the “U, I, f” screens.
Measurement results can be viewed in a tabular (METER) or a graphical form (SCOPE,
TREND). TREND view is active only in RECORDING mode. See section 3.13 for
details.
3.5.1 Meter
By entering U, I, f option, the U, I, f – METER tabular screen is shown (see figures
below).
Figure 3.10: U, I, f meter phase table screens (L1, L2, L3, N)
ENTER
MI 2892 Power Master Operating the instrument
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Figure 3.11: U, I, f meter summary table screens
In those screens on-line voltage and current measurements are shown. Descriptions of
symbols and abbreviations used in this menu are shown in table below.
Table 3.6: Instrument screen symbols and abbreviations
RMS
UL
IL
True effective value U
Rms
and I
Rms
THD
ThdU
ThdI
Total harmonic distortion THD
U
and THDI
CF Crest factor CFU and CFI
PEAK Peak value UPk and IPk
MAX Maximal U
Rms½
voltage and maximal I
Rms½
current, measured after
RESET (key: F2)
MIN Minimal U
Rms½
voltage and minimal I
Rms½
current, measured after
RESET (key: F2)
f Frequency on reference channel
Note: In case of overloading current or overvoltage on AD converter, icon will be
displayed in the status bar of the instrument.
MI 2892 Power Master Operating the instrument
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Table 3.7: Keys in Meter screens
HOLD
Holds measurement on display.
RUN
Runs held measurement.
RESET
Resets MAX and MIN values (U
Rms½
and I
Rms½
).
1 2 3 N Δ
Shows measurements for phase L1.
1 2 3 N Δ
Shows measurements for phase L2.
1 2 3 N Δ
Shows measurements for phase L3.
1 2 3 N Δ
Shows measurements for neutral channel.
1 2 3 N Δ
Shows measurements for all phases.
1 2 3 N Δ
Shows measurements for all phase to phase voltages.
12 23 31 Δ
Shows measurements for phase to phase voltage L12.
12 23 31 Δ
Shows measurements for phase to phase voltage L23.
12 23 31 Δ
Shows measurements for phase to phase voltage L31.
12 23 31 Δ
Shows measurements for all phase to phase voltages.
METER
Switches to METER view.
SCOPE
Switches to SCOPE view.
TREND
Switches to TREND view (available only during recording).
Triggers Waveform snapshot.
Returns to the “MEASUREMENTS” submenu.
3.5.2 Scope
Various combinations of voltage and current waveforms can be displayed on the
instrument, as shown below.
Figure 3.12: Voltage only waveform Figure 3.13: Current only waveform
F1
F2
F3
F4
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