IEC 62586-1:2013

Power quality measurement in power supply systems - Part 1: Power quality instruments (PQI)

IEC 62586-1:2013 specifies product and performance requirements for instruments whose functions include measuring, recording and possibly monitoring power quality parameters in power supply systems, and whose measuring methods (class A or class S) are defined in IEC 61000-4-30. These requirements are applicable in single, dual- (split phase) and 3-phase a.c. power supply systems at 50 Hz or 60 Hz. These instruments can be used in the generation, transmission and distribution of electricity, for example inside a power station, substation or a distributed generator connection and at the interface point between the installation and the network, e.g. in order to check the compliance of the connection agreement between a network operator and the customer. These instruments are fixed-installed or portable. They are intended to be used indoors and/or outdoors. Devices such as digital fault recorders, energy/power meters, protection relays or circuit breakers may include power quality functions defined in 61000-4-30 class A or class S. If such devices are specified according to this standard, then this standard fully applies and applies in addition to the relevant product standard. This standard does not replace the relevant product standard.

Mesure de la qualité de l'alimentation dans les réseaux d'alimentation - Partie 1: instruments de mesure de la qualité de l'alimentation

L'IEC 62586-1:2013 spécifie les exigences produits et de performances pour les instruments dont les fonctions incluent la mesure, l'enregistrement et éventuellement la surveillance des paramètres de la qualité des réseaux d'alimentation, dont les méthodes de mesure (classe A ou classe S) sont définies dans la IEC 61000-4-30. Ces exigences sont applicables aux réseaux d'alimentation simple, double- (phase divisée) et triphasée c.a. à 50 Hz ou 60 Hz. Les instruments suivants peuvent être utilisés dans la génération, la transmission et la distribution de l'électricité, ou au point d'interface entre l'installation et le réseau. Ces instruments sont installés de façon fixe ou sont portables. Ils sont destinés à un usage intérieur et/ou extérieur. Les appareils tels que les enregistreurs de défauts numériques, les compteurs d'énergie/puissance, les relais de protection ou les disjoncteurs peuvent inclure des fonctions de qualité de l'alimentation définies dans 61000-4-30 classe A ou classe S. Si ces appareils sont spécifiés conformément à cette norme, cette dernière s'applique entièrement et s'applique en supplément à la norme de produit pertinente. La présente norme ne remplace pas la norme de produit pertinente.

General Information

• Status: Published
• Publication Date: 11-Dec-2013
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: TC 85 - Measuring equipment for electrical and electromagnetic quantities
• Drafting Committee: WG 20 - TC 85/WG 20
• Current Stage: DELPUB - Deleted Publication
• Start Date: 23-May-2017
• Completion Date: 26-Oct-2025

Relations

• Revised: IEC 62586-1:2017 - Power quality measurement in power supply systems - Part 1: Power quality instruments (PQI)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62586-1 ®
Edition 1.0 2013-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Power quality measurement in power supply systems –
Part 1: Power quality instruments (PQI)

Mesure de la qualité de l'alimentation dans les réseaux d'alimentation –
Partie 1: Instruments de mesure de la qualité de l'alimentation
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IEC 62586-1 ®
Edition 1.0 2013-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Power quality measurement in power supply systems –

Part 1: Power quality instruments (PQI)

Mesure de la qualité de l'alimentation dans les réseaux d'alimentation –

Partie 1: Instruments de mesure de la qualité de l'alimentation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 17.220.20 ISBN 978-2-8322-1290-5

– 2 – 62586-1 © IEC:2013
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, abbreviations, notations and symbols . 9
3.1 General definitions . 9
3.2 Terms and definitions related to environments. 10
3.3 Definitions related to uncertainty . 10
3.4 Notations . 11
3.4.1 Functions . 11
3.4.2 Symbols and abbreviations . 11
3.4.3 Indices . 12
4 Environmental conditions . 12
4.1 General . 12
4.2 Environments FI1, FI2, FI1-H, FI2-H, FO and FO-H . 13
4.3 Environments PI, PI-H, PO and PO-H . 14
4.4 Relationship between ambient air temperature and relative humidity . 15
5 Ratings . 15
5.1 Rated input energising voltages . 15
5.2 Rated frequencies . 15
6 Design and construction . 15
6.1 General . 15
6.2 General architecture . 15
6.3 Functions embedded in PQI-A and PQI-S . 16
6.3.1 PQI-A minimum functions definition . 16
6.3.2 PQI-S minimum functions definition . 17
6.3.3 Summary of IEC 61000-4-30 requirements for functions . 17
6.4 Additional requirements complementary to IEC 61000-4-30 . 18
6.4.1 Data to be provided for testing reasons . 18
6.4.2 Resolution of the presented data . 20
6.4.3 Clarification about “data flagging” . 20
6.4.4 Temperature drift requirement within the rated range of operation for
ambient air temperature . 20
6.5 Safety requirements . 21
6.6 EMC requirements . 22
6.6.1 Emissions . 22
6.6.2 Immunity . 22
6.7 Climatic requirements of PQI . 22
6.8 Mechanical requirements . 22
6.8.1 Product mechanical robustness . 22
6.8.2 Enclosure robustness . 22
6.9 Degree of protection by enclosures . 23
6.10 Start-up requirements . 23
7 Marking and operating instructions . 23
7.1 General . 23
7.2 Marking . 23

62586-1 © IEC:2013 – 3 –
7.3 Operating instructions . 23
8 Functional, environmental and safety type tests . 24
8.1 General . 24
8.2 Reference conditions for type tests . 24
8.3 Safety tests . 25
8.4 EMC tests . 25
8.4.1 Emissions . 25
8.4.2 Immunity . 25
8.5 Climatic tests . 26
8.6 Mechanical tests . 27
8.6.1 Product mechanical robustness . 27
8.6.2 Degree of protection provide by enclosures for electrical equipment
against external mechanical impacts (IK code) . 28
8.6.3 Degree of protection by enclosure (IP code) . 28
8.7 Functional and uncertainty tests . 28
9 Routine tests . 28
9.1 General . 28
9.2 Protective bonding test . 28
9.3 Dielectric strength test . 28
9.4 Intrinsic uncertainty test . 28
10 Certificates and declarations . 28
11 Re-calibration and re-verification . 28
Annex A (informative) Information about environment H and G described in
IEC/TS 61000-6-5 . 29
Bibliography . 30

Figure 1 – Instrument generic measurement chain . 16
Figure 2 – Uncertainty requirement as a function of temperature . 21
Figure A.1 – Example of power station and substation: selection of the specification
for apparatus and the related connections . 29

Table 1 – Products coding table . 12
Table 2 – Definition of class A products . 12
Table 3 – Definition of class S products . 13
Table 4 – Description of FI1, FI2, FI1-H, FI2-H, FO, FO-H environments . 13
Table 5 – Description of PI, PI-H, PO and PO-H environments . 14
Table 6 – PQI-A functions . 16
Table 7 – PQI-S minimum functions . 17
Table 8 – Summary of measurements requested for testing . 19
Table 9 – Uncertainty multipliers for different temperature ranges . 21
Table 10 – Enclosure mechanical requirements . 22
Table 11 – Minimum IP requirements . 23
Table 12 – Characteristics specification template . 24
Table 13 – Reference conditions for testing . 25
Table 14 – Climatic requirements . 26
Table 15 – Product mechanical requirements . 27

– 4 – 62586-1 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWER QUALITY MEASUREMENT IN POWER SUPPLY SYSTEMS –

Part 1: Power quality instruments (PQI)

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62586-1 has been prepared by IEC technical committee 85:
Measuring equipment for electrical and electromagnetic quantities.
The text of this standard is based on the following documents:
FDIS Report on voting
85/460/FDIS 85/466/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 62586 series, published under the general title Power quality
measurement in power supply systems, can be found on the IEC website.

62586-1 © IEC:2013 – 5 –
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 6 – 62586-1 © IEC:2013
INTRODUCTION
Electricity as delivered to the network users has several characteristics which are variable
and which affect its usefulness to the network user.
Power quality instruments on the market have different characteristics. This standard provides
a common system of references in order to facilitate their selection, comparison and
evaluation. This standard specifies a classification based on product performances,
environment and safety.
It is acknowledged that IEC 61000-4-30 is a basic EMC publication. Detailed guidance on
instrument performance, performance verification methods, additional influence quantities and
other similar information should, in general, be found in a product standard.
IEC 62586-1 is a product standard that refers to IEC 61000-4-30, IEC 61000-4-7 and
IEC 61000-4-15 for measuring methods. IEC 62586-2 specifies functional tests and
uncertainty requirements for instruments in the scope of IEC 62586-1.
IEC 62586-1 is therefore complementing basic EMC standards with environmental, safety and
performance requirements.
62586-1 © IEC:2013 – 7 –
POWER QUALITY MEASUREMENT IN POWER SUPPLY SYSTEMS –

Part 1: Power quality instruments (PQI)

1 Scope
This part of IEC 62586 specifies product and performance requirements for instruments
whose functions include measuring, recording and possibly monitoring power quality
parameters in power supply systems, and whose measuring methods (class A or class S) are
defined in IEC 61000-4-30.
These requirements are applicable in single, dual- (split phase) and 3-phase a.c. power
supply systems at 50 Hz or 60 Hz.
These instruments can be used:
– in the generation, transmission and distribution of electricity, for example inside a power
station, substation or a distributed generator connection.
– at the interface point between the installation and the network, e.g. in order to check the
compliance of the connection agreement between a network operator and the customer.
NOTE 1 These instruments can also be used for other applications, e.g. inside commercial / industrial
installations especially where comparable measurements are needed (i.e. data centers or petrochemical plants).
These instruments are fixed-installed or portable. They are intended to be used indoors
and/or outdoors.
Devices such as digital fault recorders, energy/power meters, protection relays or circuit
breakers may include power quality functions defined in 61000-4-30 class A or class S. If
such devices are specified according to this standard, then this standard fully applies and
applies in addition to the relevant product standard. This standard does not replace the
relevant product standard.
NOTE 2 It is not the intent of this standard to address user interface or topics unrelated to device measurement
performance.
NOTE 3 The standard does not cover post-processing and interpretation of the data, for example with a dedicated
software.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60068-2-1, Environmental testing – Part 2-1: Tests – Tests A: Cold
IEC 60068-2-2, Environmental testing – Part 2-2: Tests – Tests B: Dry heat
IEC 60068-2-6, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)

– 8 – 62586-1 © IEC:2013
IEC 60068-2-14, Environmental testing – Part 2-14 Tests – Test N: Change of temperature
IEC 60068-2-27, Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock
IEC 60068-2-31, Environmental testing – Part 2-31: Tests – Test Ec: Rough handling shocks,
primarily for equipment-type specimens
IEC 60068-2-52, Environmental testing – Part 2-52: Tests – Test Kb: Salt mist, cyclic (sodium
chloride solution)
IEC 60068-2-57, Environmental testing – Part 2-57: Tests – Test Ff: Vibration – Time-history
and sine-beat method
IEC 60068-2-78, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat, steady
state
IEC 60529, Degrees of protection provided by enclosures (IP Code)
IEC 60654-1, Industrial-process measurement and control equipment – Operating conditions –
Part 1: Climatic conditions
IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 60721-3-1, Classification of environmental conditions – Part 3: Classification of groups of
environmental parameters and their severities – Section 1: Storage
IEC 60721-3-2, Classification of environmental conditions – Part 3: Classification of groups of
environmental parameters and their severities – Section 2: Transportation
IEC 60721-3-3, Classification of environmental conditions – Part 3: Classification of groups of
environmental parameters and their severities – Section 3: Stationary use at weatherprotected
locations
IEC 61000-4-7:2002, Electromagnetic compatibility (EMC) – Part 4-7: Testing and
measurement techniques – General guide on harmonics and interharmonics measurements
and instrumentation, for power supply systems and equipment connected thereto
Amendment 1:2008
IEC 61000-4-15:2010, Electromagnetic compatibility (EMC) – Part 4-15: Testing and
measurement techniques – Flickermeter – Functional and design specifications
IEC 61000-4-30:2008, Electromagnetic compatibility (EMC) – Part 4-30: Testing and
measurement techniques – Power quality measurement methods
IEC /TS 61000-6-5, Electromagnetic compatibility (EMC) – Part 6-5: Generic standards –
Immunity for power station and substation environments
IEC 61010-1:2010, Safety requirements for electrical equipment for measurement, control,
and laboratory use – Part 1: General requirements
IEC 61010-2-030, Safety requirements for electrical equipment for measurement, control, and
laboratory use – Part 2-030: Particular requirements for testing and measuring circuits
IEC 62262, Degrees of protection provided by enclosures for electrical equipment against
external mechanical impacts (IK code)

62586-1 © IEC:2013 – 9 –
IEC 62586-2, Power quality measurement in power supply systems – Part 2: Functional tests
and uncertainty requirements
CISPR 22, Information technology equipment – Radio disturbance characteristics – Limits and
methods of measurement
3 Terms, definitions, abbreviations, notations and symbols
For the purposes of this document, the terms and definitions given in IEC 61000-4-30 as well
as the following terms and definitions apply.
3.1 General definitions
3.1.1
power quality instrument
PQI
instrument whose main function is to measure, record and possibly monitor power quality
parameters in power supply systems, and whose measuring methods (class A or class S) are
defined in IEC 61000-4-30
3.1.2
power quality instrument class A
PQI-A
PQI whose measuring methods comply with class A of IEC 61000-4-30
3.1.3
power quality instrument class S
PQI-S
PQI whose measuring methods comply with class S of IEC 61000-4-30
3.1.4
portable instrument
portable measuring instrument
measuring instrument designed to be easily carried by hand and to be connected and
disconnected by the user
[SOURCE: IEC 60050-300:2001, 312-02-18]
3.1.5
fixed installed instrument
fixed installed measuring instrument
measuring instrument designed to be permanently mounted and which is intended to be
connected by means of permanently installed connectors
[SOURCE: IEC 60050-300:2001, 312-02-17, modified – “conductors” has been replaced by
“connectors”.]
3.1.6
panel mounted instrument
fixed installed instrument intended to be mounted in a cut out of a panel or a chassis
3.1.7
modular instrument fixed on DIN rail
fixed installed instrument intended to be used in switchgear or control gear, fixed on a DIN rail

– 10 – 62586-1 © IEC:2013
3.1.8
housing instrument fixed on DIN rail
fixed installed instrument, intended to be fixed on a DIN rail within a control panel
3.2 Terms and definitions related to environments
3.2.1
EMC environment H
harsh EMC environment
EXAMPLES High voltage stations, arc furnaces, welding, aluminium plants.
Note 1 to entry: This environment is described in IEC 61000-6-5 as H environment. A summary description of
such environments is given in Annex A.
3.2.2
EMC environment G
general EMC environment
EXAMPLES Power stations, MV and LV substations, extended industrial applications.
Note 1 to entry: This environment is described in IEC 61000-6-5 as G environment. A summary description of
such environments is given in Annex A.
3.2.3
uncontrolled environment
environment where climatic conditions such as temperature and humidity depend on external
climatic conditions and on housing of products
Note 1 to entry: Shelter or housing can be used to minimize the impact of environment.
3.2.4
controlled environment
environment where climatic conditions such as temperature and humidity are under control
Note 1 to entry: This kind of environment is usually controlled by HVAC systems.
3.2.5
limit range of operation
extreme conditions that an measuring instrument can withstand without damage and without
degradation of its metrological characteristics when it is subsequently operated within its
rated operating conditions
Note 1 to entry: Measuring instrument should be able to function within the limit range of operation
3.2.6
rated range of operation
range of values of a single influence quantity that forms a part of the rated operating
conditions
Note 1 to entry: Uncertainty requirements should be met within the rated range of operation
3.3 Definitions related to uncertainty
3.3.1
intrinsic uncertainty
uncertainty of a measuring instrument when used under reference conditions
Note 1 to entry: In this standard, it is the uncertainty of a measured value defined in its rated range and with all
influence quantities under reference conditions, unless otherwise stated.
[SOURCE: IEC 60359:2001, 3.2.10, modified – Note 1 to entry has been added.]

62586-1 © IEC:2013 – 11 –
3.3.2
influence quantity
quantity which is not the subject of the measurement and whose change affects the
relationship between the indication and the result of the measurement
Note 1 to entry: Influence quantities can originate from the measured system, the measuring equipment or the
environment.
Note 2 to entry: As the calibration diagram depends on the influence quantities, in order to assign the result of a
measurement it is necessary to know whether the relevant influence quantities lie within the specified range.
[SOURCE: IEC 60359:2001, 3.1.14, modified – Note 3 has been deleted.]
3.3.3
variation
variation due to a single influence quantity
difference between the value measured under reference conditions and any value measured
within the rated operating range (for this specific influence quantity)
Note 1 to entry: The other performance characteristics and the other influence quantities should stay within the
ranges specified for the reference conditions.
3.3.4
rated operating conditions
set of conditions that must be fulfilled during the measurement in order that a calibration
diagram may be valid
Note 1 to entry: Beside the specified measuring range and rated operating ranges for the influence quantities, the
conditions may include specified ranges for other performance characteristics and other indications that cannot be
expressed as ranges of quantities.
[SOURCE: IEC 60359:2001, 3.3.13]
3.3.5
operating uncertainty
uncertainty under the rated operating conditions
Note 1 to entry: The operating instrumental uncertainty, like the intrinsic one, is not evaluated by the user of the
instrument, but is stated by its manufacturer or calibrator. The statement may be expressed by means of an
algebraic relation involving the intrinsic instrumental uncertainty and the values of one or several influence
quantities, but such a relation is just a convenient means of expressing a set of operating instrumental
uncertainties under different operating conditions, not a functional relation to be used for evaluating the
propagation of uncertainty inside the instrument.
[SOURCE: IEC 60359:2001, 3.2.11, modified – the word "instrumental" has been removed
from both the term and the definition.]
3.3.6
overall system uncertainty
uncertainty including the uncertainty of all components related to the measurement system
(sensors, wires, measuring instrument, etc.) under the rated operating conditions
3.4 Notations
3.4.1 Functions
See functions defined in IEC 61000-4-30.
3.4.2 Symbols and abbreviations
N.R. Not requested
N.A. Not applicable
– 12 – 62586-1 © IEC:2013
3.4.3 Indices
min minimum value
max maximum value
4 Environmental conditions
4.1 General
This standard classifies power quality instruments according to the following criterion:
• instruments that are complying either with class A measurement methods of
IEC 61000-4-30 (PQI-A) or with class S measurement methods of IEC 61000-4-30 (PQI-
S);
• instruments that are either fixed installed (F), or portable (P);
• instruments that are intended to be used either Indoor (I) or Outdoor (O);
• instruments that are intended to be used in generic EMC environment G or in specific
harsh EMC environment H. See Annex A.
Instruments shall be named according to coding of Table 1. The list of all allowed instruments
is given in Table 2 and Table 3.
Table 1 – Products coding table
Power quality Functions class Fixed installed (F) Indoor (I) or EMC environment
instrument (PQI) according to or Portable (P) Outdoor (O) G (blank) or H (-H)
IEC 61000-4-30 (A instrument application
or S)
a a
PQI-A or PQI-S -FI1, -FI2, -FO, -PI or -PO Blank or -H
a
See Table 4 and Table 5.
Table 2 – Definition of class A products
Fixed installed Portable
Indoor application Outdoor Indoor application Outdoor
application application
EMC PQI-A-FI1 PQI-A-FO PQI-A-PI PQI-A-PO
environment G
PQI-A-FI2
EMC PQI-A-FI1-H PQI-A-FO-H PQI-A-PI-H PQI-A-PO-H
environment H
PQI-A-FI2-H
NOTE FI1 is an indoor environment with uncontrolled temperature variations, while FI2 is an indoor
environment with controlled temperature variations

62586-1 © IEC:2013 – 13 –
Table 3 – Definition of class S products
Fixed installed Portable
Indoor application Outdoor Indoor application Outdoor
application application
EMC PQI-S-FI1 PQI-S-FO PQI-S-PI PQI-S-PO
environment G
PQI-S-FI2
EMC PQI-S-FI1-H PQI-S-FO-H PQI-S-PI-H PQI-S-PO-H
environment H
PQI-S-FI2-H
NOTE FI1 is an indoor environment with uncontrolled temperature variations, while FI2 is an indoor
environment with controlled temperature variations

4.2 Environments FI1, FI2, FI1-H, FI2-H, FO and FO-H
Those environments are dedicated to fixed-installed instruments, used:
– in EMC environment G or in EMC environment H;
– for indoor operation or outdoor operation.
Table 4 – Description of FI1, FI2, FI1-H, FI2-H, FO, FO-H environments
Environmental parameters Storage and transport Indoor operation Outdoor operation
Ambient temperature: limit IEC 60721-3-1 / 1K5    FI1: IEC 60721-3-3 / 3K6    Depends on the
a
range of operation geographic regions or
-40 °C to + 70 °C -25 °C to + 55 °C
g
the application
IEC 60721-3-2 / 2K4    FI2: IEC 60721-3-3 / 3K5
At least the
-40 °C to + 70 °C mod.: 0 °C to +45 °C
requirements for indoor
operation are mandatory
Ambient temperature: rated --- FI1:IEC 60721-3-3 / 3K5 IEC 60721-3-3 / 3K6
b
range of operation
mod.   -10 °C to + 45° -25 °C to + 55 °C
FI2:IEC 60721-3-3 / 3K5
mod.   0 °C to + 45 °C
d d d
Relative humidity: 24 h average from 5 % to 95 % from 5 % to 95 % from 5 % to 95 %
2 2
Solar radiations Negligible 700 W/m 1120 W/m
Wind-driven precipitation (rain, Negligible Negligible Significant precipitation.
snow, hail, etc.)
Air pollution by dust, salt, No significant air No significant air Significant air pollution
c c
smoke, corrosive/flammable pollution pollution by dust and salt.
gas, vapours
Vibration, earth tremors IEC 60721-3-1 / 1M1 IEC 60721-3-3 / 3M1 IEC 60721-3-3 / 3M1
IEC 60721-3-2 / 2M1
Electromagnetic Environment --- IEC 61000-6-5 IEC 61000-6-5
disturbances s FI1, FI2, environment G environment G
immunity FO
Environment --- IEC 61000-6-5 IEC 61000-6-5
s FI1-H, FI2- environment H environment H
H, FO-H
Altitude ---
≤ 2 000 m ≤ 2 000 m
Pollution degree --- 2 according to IEC 61010 2 or 3 according to
IEC 61010
– 14 – 62586-1 © IEC:2013
Environmental parameters Storage and transport Indoor operation Outdoor operation
Overvoltage category (related --- IEC 61010 Overvoltage IEC 61010 Overvoltage
e f e f
to the mains supply) category III category III
Measurement category (related --- IEC 61010 Measurement IEC 61010 Measurement
e f e f
to the measurement inputs) category III or IV category III or IV
a
See definition. Temperature may be lower on the front face of panel mounted instruments.
b
See definition.
c
These conditions correspond to maximum values given for classes 3C1 and 3S1 in IEC 60721-3-3.
d
No condensation or ice is considered. See Figure 1.
e
If the instrument is supplied by the circuit being measured, then Overvoltage category and Measurement
category shall be the same category number.
f
For guidance on the selection of the correct measurement category, see IEC 61010-2-030. For guidance on
the overvoltage category, see IEC 61010-1.
g
Limit range of operation shall be specified by manufacturer.

4.3 Environments PI, PI-H, PO and PO-H
Those environments are dedicated to portable instruments,
– used in EMC environment G or in EMC environment H
– for indoor applications or outdoor applications.
Table 5 – Description of PI, PI-H, PO and PO-H environments
Environmental parameters Storage Indoor operation outdoor operation
Ambient temperature: limit IEC 60721-3-1/ 1K5     IEC 60721-3-3 / 3K5    Depends on the
a
range of operation geographic regions or
–40 °C to + 70 °C –5 °C to + 45 °C
g
the application
IEC 60721-3-2 / 2K4
At least the
–40 °C to + 70 °C
requirements for indoor
operation are mandatory
Ambient temperature: rated --- IEC 60721-3-3 / 3K5 IEC 60721-3-3 / 3K6
b
range of operation mod.   0 °C to + 40 °C -5 °C to + 45 °C
d d d
Relative humidity: 24 h average from 5 % to 95 % from 5 % to 95 % from 5 % to 95 %
Solar radiations Negligible 700 W/m² 1 120 W/m²
Wind-driven precipitation (rain, Negligible Negligible Significant precipitation.
snow, hail, etc.)
Air pollution by dust, salt, No significant air No significant air Significant air pollution
c c
smoke, corrosive/flammable pollution pollution by dust and salt.
gas, vapours
Vibration, earth tremors IEC 60721-3-1 / 1M1  IEC 60721-3-3 / 3M2 IEC 60721-3-3 / 3M2
IEC 60721-3-2 / 2M1
Electromagnetic Environment --- IEC 61000-6- 5 IEC 61000-6- 5
disturbances s PI or PO environment G environment G
immunity
Environment --- IEC 61000-6- 5 IEC 61000-6- 5
s PI-H or PO- environment H environment H
H
Altitude
≤ 2 000 m ≤ 2 000 m ≤ 2 000 m
Pollution degree --- 2 2 or 3
Overvoltage category (related --- IEC 61010 overvoltage IEC 61010 overvoltage
e f e f
to the mains) category III category III
Measurement category (related --- IEC 61010 measurement IEC 61010 measurement
e f e f
to the measurement inputs) category III or IV category III or IV

62586-1 © IEC:2013 – 15 –
a
See definition.
b
See definition.
c
These conditions correspond to maximum values given for classes 3C1 and 3S1 in IEC 60721-3-3.
d
No condensation or ice is considered. See Figure 1.
e
If the instrument is supplied by the circuit being measured, then Overvoltage category and Measurement
category shall be the same category number.
f
For guidance on the selection of the correct measurement category, see IEC 61010-2-030. For guidance on
the overvoltage category, see IEC 61010-1.
g
Limit range of operation shall be specified by manufacturer.

4.4 Relationship between ambient air temperature and relative humidity
Classes C1 and C2 defined in IEC 60654-1 apply taking into account the values of Table 4
and Table 5.
5 Ratings
5.1 Rated input energising voltages
The preferred rated values of voltages for a.c. (r.m.s.) are those given below, together with
those values multiplied by √3 or 1/√3: 100 V; 110 V; 115 V; 120 V; 200 V; 220 V; 230 V; 240 V;
480 V; 600 V and 690 V.
The values above are preferred values however if a PQI complies with a specific country’s
requirement not covered by the above, this shall be stated by the manufacturer.
5.2 Rated frequencies
The standard rated values of frequency shall be selected from the following:
50 Hz; 60 Hz.
6 Design and construction
6.1 General
The following requirements as well as those given in IEC 62586-2 shall apply.
NOTE IEC 62586-2 specifies functional tests and uncertainty requirements for instruments in the scope of this
standard.
6.2 General architecture
Organisation of the measurement chain: the electrical quantity to be measured may be either
directly accessible, as it is generally the case in low-voltage systems, or accessible via
measurement sensor like voltage sensors (VS) or current sensors (CS).
It shall be possible to download data stored in the instrument, for example with a
communication network, or through a removable memory.
Figure 1 below specifies the general architecture of the instrument, the dotted lines show
optional units of the instrument.

– 16 – 62586-1 © IEC:2013
Communication
protocol
Communication
Data storage
unit management
Processing and
Measurement
Acquisition Management Display
evaluation
sensors
unit
unit unit
unit
Digital I/O
management
Electrical
Input signal to Measureme
input
be measured nt results
signals
Digital I/O
IEC  2947/13
Figure 1 – Instrument generic measurement chain
6.3 Functions embedded in PQI-A and PQI-S
6.3.1 PQI-A minimum functions definition
Any PQI-A shall include all the mandatory functions specified in Table 6.
Table 6 – PQI-A functions
c a
Function and data provided Requirement
Measurement method, measuring
uncertainty and measuring range
according to IEC 61000-4-30
Power Frequency M class A
10 sec data
M class A
Magnitude of the Supply Voltage
150/180 cycles, 10 minutes and 2-hours data.
Flicker M class A
10 minutes Pst and 2-hours Plt data.
Supply voltage dips and Swells M class A
Residual voltage, swell voltage and duration
Supply voltage interruptions M class A
Residual voltage and duration
Supply voltage unbalance M class A
150/180 cycles, 10 minutes and 2-hours data.
Voltage Harmonics M class A
150/180 cycles, 10 minu
...