Recurrent Test of Electrical Equipment

This document specifies the requirements of the test procedures to be applied for recurrent tests of current-using electrical equipment and appliances for the verification of the effectiveness of the protective measures and the permissible limits for product compliance.
This procedure is applicable to current-using electrical equipment connected to final circuits. They can be either pluggable equipment type A connected to final circuits at work places via a plug or permanently connected equipment, with a rated voltage above 25 V AC and 60 V DC up to 1 000 V AC and 1 500 V DC, and currents up to 63A.
This document does not cover:
—    Test after repair defined in FprEN 50678;
—    type tests, routine tests, sample tests, special tests and acceptance tests for product safety nor for product functional requirements.
This document does not apply to:
—    devices and equipment that are part of the fixed electrical installations defined in HD 60364 (all parts);
—    uninterruptible Power Supply (UPS), photovoltaic inverters and power converters, e.g. AC/DC converters;
—    charging stations for electro-mobility;
—    stationary power supplies (generators);
—    programmable Logic Controllers (PLC);
—    power Drives;
—    devices for EX-zones or for mining applications in general;
—    products already covered by standards addressing similar topics such as:
—    medical equipment covered by EN 60601 1. For these devices, EN 62353 applies;
—    arc welding equipment covered by EN 60974 1. For these devices, EN 60974 4 applies;
—    Machinery covered by EN 60204 1. For these devices, EN 60204 1 applies.

Wiederholungsprüfung für elektrische Geräte

Dieses Dokument legt die Anforderungen an die Prüfverfahren fest, die anlässlich einer wiederkehrenden
Prüfung elektrischer Verbrauchsmittel und Geräte zur Überprüfung der Wirksamkeit der Schutzmaßnahmen
auf Einhaltung der zulässigen Grenzwerte anzuwenden sind.
Dieses Verfahren gilt für elektrische Geräte, die am Arbeitsplatz an Endstromkreise mit einer Nennspannung
von über 25 V AC und 60 V DC bis zu 1 000 V AC und 1 500 V DC und Strömen bis zu bis 63 A angeschlossen
sind. Dies können Geräte sein, die am Endstromkreis am Arbeitsplatz mit einem Anschlussstecker des Typs A,
oder fest angeschlossen sind.
Diese Norm geht davon aus, dass die in Rede stehenden elektrischen Geräte bereits auf dem Markt und in
Gebrauch sind und den jeweiligen Produktnormen entsprechen.
Dieses Dokument deckt nicht ab
- Prüfung nach der Reparatur definiert in EN 50678;
- Typprüfung, Stückprüfung, Stichprobenprüfungen, Sonderprüfungen und Abnahmeprüfungen für die
Produktsicherheit und für die Produktfunktionsanforderungen.
ANMERKUNG 1 Typprüfungen, Stückprüfungen, Stichprobenprüfungen, Sonderprüfungen und Abnahmeprüfungen sind
normalerweise in Produktnormen definiert. Dieses Dokument ersetzt keine Prüfungen, die unter Produktnormen fallen.
Dieses Dokument gilt nicht für:
- Geräte und Einrichtungen die Teil der elektrischen Anlagen nach HD 60364 (alle Teile) sind;
ANMERKUNG 2 Für diese Geräte werden Installationsprüfungen und regelmäßige Überprüfungen durch HD 60364-6
abgedeckt.
- Unterbrechungsfreie Stromversorgung (USV), Photovoltaik-Wechselrichter und Stromrichter, z. B. AC /
DC-Wandler;
- Ladestationen für Elektrofahrzeuge;
- Speicherprogrammierbare Steuerungen;
- Leistungsantriebe;
- Geräte für den EX-Bereich oder für den Bergbau allgemein;
- Geräte, für die andere Vorschriften für die Instandhaltung und/oder Überprüfung gelten wie z. B.:
a) medizinische elektrische Geräte nach IEC 60601-1. Für diese Geräte gilt die EN 62353;
b) Lichtbogenschweißgeräte nach IEC 60974-1. Für diese Geräte gilt die EN 60974-4;
c) Maschinen nach EN 60204-1. Für diese Geräte gilt die EN 60204-1.

Essais récurrents des appareils électriques

Ponavljalni preskus električne opreme

General Information

Status
Published In Translation
Public Enquiry End Date
29-Feb-2020
Publication Date
29-Nov-2020
Technical Committee
Current Stage
6100 - Translation of adopted SIST standards (Adopted Project)
Start Date
04-Oct-2022
Due Date
03-Oct-2023

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SLOVENSKI STANDARD
SIST EN 50699:2021
01-januar-2021
Ponavljalni preskus električne opreme
Recurrent Test of Electrical Equipment
Wiederholungsprüfung für elektrische Geräte
Essais récurrents des appareils électriques
Ta slovenski standard je istoveten z: EN 50699:2020
ICS:
29.020 Elektrotehnika na splošno Electrical engineering in
general
SIST EN 50699:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50699:2021

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SIST EN 50699:2021


EUROPEAN STANDARD EN 50699

NORME EUROPÉENNE

EUROPÄISCHE NORM
November 2020
ICS 19.080; 29.020

English Version
Recurrent Test of Electrical Equipment
Essais récurrents des appareils électriques Wiederholungsprüfung für elektrische Geräte
This European Standard was approved by CENELEC on 2020-09-21. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50699:2020 E

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SIST EN 50699:2021
EN 50699:2020 (E)
Contents
European foreword .3
Introduction .4
1 Scope .5
2 Normative references .6
3 Terms and definitions .6
4 Requirements .9
5 Tests . 10
5.1 General . 10
5.1.1 General test conditions . 10
5.1.2 Visual inspection . 10
5.1.3 Test of the effectiveness of protective measures against electric hazards . 10
5.1.4 Confirmation of the compliance of additional protective measures. 11
5.1.5 Documentation and evaluation of test . 11
5.2 Visual inspection . 11
5.3 Measuring of protective conductor resistance . 12
5.4 Measurement of the insulation resistance . 14
5.5 Measurement of protective conductor current . 18
5.6 Measurement of the touch current . 22
5.7 Confirmation of the compliance of the specifications for the protective measure
SELV/PELV . 25
5.8 Measurement of the leakage current produced by a floating input (measuring- and
control input) with a rated input voltage above 50 V AC or 120 V DC . 26
5.9 Confirmation of the operation of further protective measures . 27
6 Documentation and evaluation of test . 27
7 Test equipment . 27
Annex A (informative) General guidance and rationale . 28
A.1 Intended audience . 28
A.2 Rationale . 29
A.2.1 Clause 5 – Tests . 29
A.2.2 Subclause 5.3 – Measuring of protective bonding resistance . 29
A.2.3 Subclause 5.4 – Measurement of insulation resistance . 29
A.2.4 Reasons for choosing different measuring methods for leakage current . 30
A.2.5 Alternative method . 30
A.2.6 Residual method . 31
Annex B (informative)  Schematics for test sequences . 32
B.1 Schematic test sequence for equipment of class I . 32
B.2 Schematic test sequence for equipment of class II . 33
Annex C (normative) Special National Conditions . 34
Bibliography . 35

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SIST EN 50699:2021
EN 50699:2020 (E)
European foreword
This document (EN 50699:2020) has been prepared by CLC/BTTF 160-1 “Recurrent Test of Electrical
Equipment”.
The following dates are fixed:
• latest date by which this document has (dop) 2021-09-21
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2023-09-21
standards conflicting with this document
have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

3

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SIST EN 50699:2021
EN 50699:2020 (E)
Introduction
This document intends to provide a uniform test procedure to test the effectiveness of the protective
measures for electrical safety for recurrent tests of current-using equipment and appliances during
their operating life time at work places.
This document can be considered by employers to support compliance with the European Directive
2009/104/EC concerning the minimum safety and health requirements for the use of work equipment
by workers at work and does not necessarily involve the manufacturer.
In general, test procedures for verification of products is the responsibility of the related product
technical committees. This document can be taken into consideration by product technical committees
if they need to take into consideration modified or additional tests for verification of products falling
within their scope.”
The described tests are simple and fast, well approved and safe for the testing person.
They can be carried out on site and/or in laboratories.
4

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SIST EN 50699:2021
EN 50699:2020 (E)
1 Scope
This document specifies the requirements of the test procedures to be applied for recurrent tests of
current-using electrical equipment and appliances for the verification of the effectiveness of the
protective measures and the permissible limits
This procedure is applicable to current-using electrical equipment connected at work places to final
circuits with a rated voltage above 25 V AC and 60 V DC up to 1 000 V AC and 1 500 V DC, and
currents up to 63 A. They can be either pluggable equipment type A connected to final circuits at work
places via a plug or permanently connected equipment.
This document assumes that the current-using equipment or appliances under consideration complies
with its related product standard, has been introduced on the market and is in use.
This document does not cover:
— tests after repair defined in EN 50678;
— type tests, routine tests, sample tests, special tests and acceptance tests for product safety nor
for product functional requirements.
NOTE 1 type tests, routine tests, sample tests, special tests and acceptance tests are usually defined in
product standards. This document does not replace tests covered by product standards.
This document does not apply to:
— devices and equipment that are part of the fixed electrical installations defined in
HD 60364 (all parts);
NOTE 2 For these devices, tests for initial and periodic verifications are covered by HD 60364-6.
— uninterruptible Power Supply (UPS), photovoltaic inverters and power converters, e.g. AC/DC
converters;
— charging stations for electro-mobility;
— stationary power supplies (generators);
— programmable Logic Controllers (PLC);
— power Drives;
— devices for EX-zones or for mining applications in general;
— products already covered by standards addressing similar topics such as:
a) medical equipment covered by EN 60601-1. For these devices, EN 62353 applies;
b) arc welding equipment covered by EN 60974-1. For these devices, EN 60974-4 applies;
c) machinery covered by EN 60204-1. For these devices, EN 60204-1 applies.
5

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SIST EN 50699:2021
EN 50699:2020 (E)
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 61557-1, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. -
Equipment for testing, measuring or monitoring of protective measures - Part 1: General requirements
EN 61557-2, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. -
Equipment for testing, measuring or monitoring of protective measures - Part 2: Insulation resistance
EN 61557-4, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. -
Equipment for testing, measuring or monitoring of protective measures - Part 4: Resistance of earth
connection and equipotential bonding
EN 61557-16, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. -
Equipment for testing, measuring or monitoring of protective measures - Part 16: Equipment for testing
the effectiveness of the protective measures of electrical equipment and/or medical electrical
equipment
IEC 60417, Graphical symbols for use on equipment
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
NOTE Some of the definitions are different from those in the product standards for type testing, as different
measuring methods are used.
3.1
electrical safety
protection within a piece of equipment which limits the effects of electrical current on a user or other
individuals
Note 1 to entry: Safety is defined as freedom from unacceptable risk (refer to ISO 14971:2007, definition
2.24).
3.2
testing
process of visually controlling, measuring or proving the electrical equipment in order to assure that
equipment remains safe to use
3.3
electrically skilled person
skilled person
person with relevant education and experience to enable him or her to perceive risks and to avoid
hazards which electricity can create
[SOURCE: IEV 195-04-01]
6

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SIST EN 50699:2021
EN 50699:2020 (E)
3.4
electrically instructed person
instructed person
person adequately advised or supervised by electrically skilled persons to enable him or her to
perceive risks and to avoid hazards which electricity can create
[SOURCE: IEV, 195-04-02]
3.5
electrical equipment
single apparatus using electrical energy and connected by plug or permanently connected to a final
circuit of the distribution system
Note 1 to entry: Equipment includes those accessories as defined by the manufacturer that are necessary to
enable the normal use of the equipment.
3.6
final circuit
electric circuit intended to directly supply electric current to current-using equipment or socket-outlets
[SOURCE: IEV 826-14-03 modified, buildings is removed]
3.7
leakage current
current flowing from live parts of the equipment to earth
[SOURCE: IEV 442-01-24 modified – the term has changed and a reference to the absence of an
insulation fault has been removed.]
3.8
touch current
current passing through a human or animal body when it touches one or more accessible parts of a
piece of electrical equipment not connected to protective earth
[SOURCE: IEV 195-05-21 modified – the wording of the definition has been narrowed]
3.9
protective conductor current
electric current which flows in a protective conductor and is frequency weighted according to the
characteristics of the human body
[SOURCE: IEV 826-11-21, modified – the wording of the definition has been expanded.]
3.10
residual current
vectorial sum of the currents flowing in the live conductors of the mains circuit of the equipment and
frequency weighted according to the characteristics of the human body
[SOURCE: IEV 826-11-19 modified – the wording of the definition has been expanded]
3.11
insulation resistance
resistance under specified conditions between two conductive elements separated by insulating
materials
[SOURCE: IEV 151-15-43]
7

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SIST EN 50699:2021
EN 50699:2020 (E)
3.12
protective bonding resistance
resistance between any accessible conductive part, which is connected for safety purposes to the
protective earth terminal, and the
— protective terminal of the mains plug, or
— protective terminal of the equipment inlet, or
— protective terminal permanently connected to the supply mains;
3.13
SELV
electric system in which the voltage cannot exceed the value of extra-low voltage:
— under normal conditions, and
— under single fault conditions, including earth faults in other electric circuits
Note 1 to entry: SELV is the abbreviation for safety extra-low voltage.
[SOURCE: IEV 826-12-31]
3.14
PELV
electric system in which the voltage cannot exceed the value of extra-low voltage:
— under normal conditions, and
— under single fault conditions, except earth faults in other electric circuits
Note 1 to entry: PELV is the abbreviation for protective extra-low voltage.
[SOURCE: IEV 826-12-32]
3.15
recurrent test
periodic verification of the effectiveness of protective measures of electrical equipment
3.16
permanently connected equipment
equipment that can only be electrically connected to or disconnected from the mains by the use of a
tool
3.17
pluggable equipment type A
equipment that is intended for connection to the mains via a non-industrial plug and socket outlet or
via a non-industrial appliance coupler, or both
Note 1 to entry: Examples are appliance couplers covered by standards such as EN 60320-1.
3.18
current-using equipment
electrical equipment intended to convert electrical energy into another form of energy, for example
light, heat, mechanical energy
[SOURCE: IEC 60050-826:2004, 826-16-02]
8

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SIST EN 50699:2021
EN 50699:2020 (E)
3.19
hazardous live parts
live part which, under certain conditions, can give a harmful electric shock
[SOURCE: IEC 60050-826:2004, 826-12-13]
4 Requirements
Recurrent tests shall be performed by an electrically skilled person or by an electrically instructed
person, supervised by an electrically skilled person. Additional requirements (e.g. for the mechanical
safety or for fire protection) according to the requirements from the product safety standard may be
taken into account.
If it is not possible to perform a certain test step, an electrically skilled person shall decide if the safety
of the equipment under test can be confirmed without the test step or by other means. This decision
shall be justified and reported.
If testing the equipment requires additional knowledge or additional test equipment, for example
equipment for microwaves, tests shall be done according to the instructions of the manufacturer.
All tests shall be performed in such a manner that the risk for testing personnel or other individuals
shall be reduced by appropriate protective measures.
If not otherwise stated, all values for current and voltage are the r.m.s. values of an alternating, direct
or composite voltage or current.
The applicable tests as listed in Clause 5 shall be used to advise that:
— there are no visible faults on safety related parts, which are accessible by the user and
— by the intended use of the equipment, minimized hazard for the user or the environment
originates.
The electrically skilled person who is responsible for the test shall decide if additional tests are
required to meet the protective measures.
During a recurrent test the equipment shall not be disassembled. The electrically skilled person may
decide that, for equipment that is connected to the distribution system with fixed and protected wiring
and is not intended to be hand-held during operation, the test is carried out according to this document
and/or according to the relevant clauses of HD 60364-6.
The test procedure shall be interrupted and the equipment shall be disconnected from mains and
marked as failed, if it is found that during the test:
— reduced safety levels are present due to damage or from unintended use;
and/or
— functional hazards could occur.
NOTE The frequency of testing can be determined by the national requirements or recommendation of the
manufacturer. Where no national requirements or information of the manufacturer is existing a risk analysis can
be used.
9

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SIST EN 50699:2021
EN 50699:2020 (E)
5 Tests
5.1 General
5.1.1 General test conditions
The tests may be performed at the ambient temperature, humidity and atmospheric pressure present
at the location of testing.
If it is obvious that the equipment is contaminated by dust or moisture, it is allowed to clean the
equipment under test and/or to allow it to dry before starting the tests
The operational limits of the test equipment and the equipment under test shall be taken into account.
The equipment shall be tested according to the test steps in 5.1.1 to 5.1.5, as long as it is possible
with the equipment under test. The sequence of testing shall be as defined in this document.
Each individual performed test shall be passed before proceeding to the next test.
If it is not possible to perform a certain test step, an electrically skilled person shall decide if the safety
of the equipment under test can be confirmed without the test step or by other means. This decision
shall be justified and reported.
Manufacturer’s instructions on tests to be performed, shall be considered.
The values in this document shall be used unless the product standard specifically provides in-service
limits in which case the product standard limits shall be used or justified values from the manufacturer.
External equipment that could influence the tests should be disconnected, if possible.
Measurement of leakage currents using the direct or residual method shall be performed using a TN
supply system or a TT supply system with an earth resistance below 1000 Ω.
NOTE 1 It is preferable to use a TN supply for the measurement of leakage currents using the direct or
residual method.
Accessible conductive parts not relevant for touch current measurement can be identified by risk
analysis. Risk assessment and risk analysis should be carried out by skilled persons and should be
based on knowledge of the electrical circuitry and construction of the Equipment Under Test (EUT).
NOTE 2 In general this document does not address the measurement of DC leakage currents.
5.1.2 Visual inspection
Visual inspection shall be performed according to 5.2.
5.1.3 Test of the effectiveness of protective measures against electric hazards
Test of the protective measures against electric hazards shall be performed according to 5.3 to 5.8.
— Confirmation of the effectiveness of the protective bonding to all accessible conductive parts
connected for safety reasons to protective earth according to 5.3.
— Confirmation of the effectiveness of the insulation by measuring the insulation resistance between
live parts and accessible conductive parts:
— connected to protective earth (primarily on class I equipment) according to 5.4;
— protected by double or reinforced Insulation and not connected to protective earth (primarily
on class II equipment but also on class I equipment) according to 5.4;
— protected by SELV/PELV according to 5.4.
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SIST EN 50699:2021
EN 50699:2020 (E)
— Confirmation of the compliance with the limits for the leakage currents by measuring of:
— the protective conductor current according to 5.5;
— The touch current of accessible conductive parts not connected to protective earth, if
applicable, according to 5.6.
NOTE 1 The measurement of leakage current can be omitted on extension leads, detachable power cables,
multiple socket-outlets without electrical parts between live conductors and protective earth.
NOTE 2 The measurement of protective earth leakage current can be omitted on permanently connected
(installed) equipment.
— Confirmation of the compliance with the requirements for the protective measure SELV/PELV by
measuring the output voltage, if the output voltage is accessible according to 5.7.
— Confirmation of the compliance with the limits for the leakage currents produced by a floating
input (e.g. inputs for measuring and control) with a rated input voltage above 50 V AC or
120 V DC according to 5.8.
5.1.4 Confirmation of the compliance of additional protective measures
Confirmation of the compliance of additional protective measures shall be according to 5.9.
5.1.5 Documentation and evaluation of test
The documentation and the evaluation of the tests shall be according to Clause 6.
5.2 Visual inspection
The visual inspection shall take place to detect external defects and, if possible, to determine the
qualification of the suitability of the equipment for the environment.
Special attention shall be paid to the following (if applicable):
— any damage or contamination;
— that all cables and connectors are connected in their intended way ;
— checking by hand to ensure that the anchorages and the inlets of each connector are properly
fixed.
— condition of the mains plug and the mains connectors and conductors;
— defects of the strain relief of the mains supply cord;
— defect of the mains lead cord grip;
— condition of anchorage, cable clip, accessible fuse insert;
— damage of the housing and protective cover that could give access to live or dangerous moving
parts;
— signs of overload or overheating or unintended use;
— signs of improper change;
— signs of corrosion that impacts protective measures and improper aging;
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SIST EN 50699:2021
EN 50699:2020 (E)
— blockage of cooling inlets and outlets e.g. air filters ;
— tightness of container for water, air, or other medium, condition of pressure control valve;
— usability of switches, control and setup equipment;
— readability and completeness of all safety relevant markings, labels or symbols, of the ratings and
of the position indicators;
— all fuses accessible from the outside are complying with the data given by the manufacturer (rated
current, characteristics) ;
— assess the relevant accessories together with the equipment (e.g. detachable or fixed power
supply cords tubing);
— defect due to bending of cords, cables, hoses and tubing.
NOTE 1 It is appropriate to determine during the visual inspection if accessible conductive parts, that have to
be tested according to 5.3 to 5.8, are present.
NOTE 2 This list is not exhaustive
5.3 Measuring of protective conductor resistance
The integrity of the protective conductor connections shall be confirmed by:
— visually inspecting the entire length of the protective earth path, according to 5.2;
— measuring the resistance between the protective earth terminal of the equipment (where
applicable contact on the mains plug) and each accessible conductive part, directly connected to
the protective earth.
NOTE 1 Conductive parts, which are not part of the protective measures, could have a higher measured
resistance values (e.g. mechanical construction parts, decorative parts, functional earthing, etc.). On these parts,
touch current measurements are used.
NOTE 2 During the measurement, the conductor is flexing over the entire length and at the point of entry on
the equipment and the mains plug. Flexing is not required for permanently connected equipment where the
conductor is not accessible.
Test circuits according to Figure 1a or Figure 1b may be used.
The protective bonding resistance shall not exceed 0,3 Ω for equipment under test with cable lengths
2
up to 5 m and a cross section area up to 1,5 mm . For each further 7,5 m of cable length 0,1 Ω shall
be added up to a maximum limit value of 1 Ω.
For cross section areas above 1,5 mm2 and other cable lengths the limit shall be calculated by the
following formula.
II
R=ρΩ+=01,,or R + 01Ω
AAκ
where
R is the electrical resistance (Ω);
ρ (Roh) is the standard value of electrical conductivity (Ω mm2/m) for the metal used for the PE
conductor;
l is the length of the cable in meters (m);
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SIST EN 50699:2021
EN 50699:2020 (E)
A is the cross-sectional area of the conductor in square millimetres (mm2);
κ is the electrical conductivity (S/m).
NOTE 3 The value of 0,1 Ω in the formulae above takes into account the influence of the contact resistance.
If fixed installed equipment is measured using an adjacent connection, an electrically skilled person
shall decide which value shall be added.
It is recommended that care be taken to ensure that the contact resistance between the test probe and
the metal part under test does not influence the test result.
When equipment under test is permanently connected to the distribution system, an earth reference
point on the fixed installation is required to measure the earth continuity. The protective earth
conductor shall not be disconnected from the installation and protective covers shall not be removed.
NOTE 4 During this measurement parallel earth connections, for example due to the type of installation (water
pipe or data line), can influence the result.
NOTE 5 Some equipment under test could have accessible metal parts which are earthed only for functional
or screening purposes with protection against electric shock being provided by double or reinforced insulation.

a) Example of test circuit for the measurement of protective ea
...

SLOVENSKI STANDARD
oSIST prEN 50699:2020
01-februar-2020
Ponavljalni preskus električne opreme
Recurrent Test of Electrical Equipment
Ta slovenski standard je istoveten z: prEN 50699
ICS:
29.020 Elektrotehnika na splošno Electrical engineering in
general
oSIST prEN 50699:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 50699:2020

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oSIST prEN 50699:2020


EUROPEAN STANDARD DRAFT
prEN 50699
NORME EUROPÉENNE

EUROPÄISCHE NORM

December 2019
ICS

English Version
Recurrent Test of Electrical Equipment
To be completed To be completed
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2020-03-19.

It has been drawn up by CLC/BTTF 160-1.

If this draft becomes a European Standard, CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CENELEC in three official versions (English, French, German).
A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to
the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.



European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 67716 Ref. No. prEN 50699 E

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1 Contents Page
2 European foreword .3
3 Introduction .4
4 1 Scope .5
5 2 Normative references .5
6 3 Terms and definitions .6
7 4 Requirements .9
8 5 Tests .9
9 5.1 General .9
10 5.1.1 General test conditions .9
11 5.1.2 Visual inspection . 10
12 5.1.3 Test of the protective measures against electric hazards . 10
13 5.1.4 Confirmation of the compliance of additional protective measures. 10
14 5.1.5 Documentation and evaluation of test . 11
15 5.2 Visual inspection . 11
16 5.3 Measuring of protective bonding resistance . 12
17 5.4 Measurement of the insulation resistance . 14
18 5.5 Measurement of protective conductor current . 19
19 5.6 Measurement of the touch current . 23
20 5.7 Confirmation of the compliance of the specifications for the protective measure
21 SELV/PELV . 26
22 5.8 Measurement of the leakage current produced by a floating input (measuring- and
23 control input) with a rated input voltage above 50 V a.c or 120 V d.c . 26
24 5.9 Confirmation of the operation of further protective measures . 27
25 5.10 Final verification of marking . 27
26 6 Documentation and evaluation of test . 27
27 7 Test equipment . 28
28 Annex A (informative) General guidance and rationale . 29
29 Annex B (informative) Schematics for test sequences . 33
30 Annex C (normative) Special National Conditions . 35
31 Bibliography . 36
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32 European foreword
33 This document (prEN 50699:2019) has been prepared by CLC/BTTF 160-1 “Recurrent Test of
34 Electrical Equipment”.
35 This document is currently submitted to the second Enquiry.
36 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
latest date by which this document has to be (dop) dor + 12 months

implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn
modified when voting)
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37 Introduction
38 This document provides a uniform procedure for an employer/work place to test the effectiveness of
39 the basic protective measures for recurrent tests of current using electrical equipment and appliances
40 during their operating life time
41 This document can be considered to support compliance with the European Directive 2009/104/EC
42 concerning the minimum safety and health requirements for the use of work equipment by workers at
43 work and does not necessarily involve the manufacturer.
44 In general, test procedures for verification of products is the responsibility of the related product
45 technical committees. This document can be taken into consideration by product technical committees
46 if they need to take into consideration modified or additional tests for verification of products falling
47 within their scope.”
48 The described tests are simple and fast, well approved and safe for the testing person.
49 They can be carried out on site and/or in laboratories.
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50 1 Scope
51 This document specifies the requirements of the test procedures to be applied for recurrent tests of
52 current-using electrical equipment and appliances for the verification of the effectiveness of the
53 protective measures and the permissible limits for product compliance.
54 This procedure is applicable to current-using electrical equipment connected to final circuits. They can
55 be either pluggable equipment type A connected to final circuits at work places via a plug or
56 permanently connected equipment, with a rated voltage above 25 V AC and 60 V DC up to 1 000 V
57 AC and 1 500 V DC, and currents up to 63A.
58 This document does not cover:
59 — Test after repair defined in FprEN 50678;
60 — type tests, routine tests, sample tests, special tests and acceptance tests for product safety nor
61 for product functional requirements.
62 This document does not apply to:
63 — devices and equipment that are part of the fixed electrical installations defined in
64 HD 60364 (all parts);
65 — uninterruptible Power Supply (UPS), photovoltaic inverters and power converters, e.g. AC/DC
66 converters;
67 — charging stations for electro-mobility;
68 — stationary power supplies (generators);
69 — programmable Logic Controllers (PLC);
70 — power Drives;
71 — devices for EX-zones or for mining applications in general;
72 — products already covered by standards addressing similar topics such as:
73 — medical equipment covered by EN 60601-1. For these devices, EN 62353 applies;
74 — arc welding equipment covered by EN 60974-1. For these devices, EN 60974-4 applies;
75 — Machinery covered by EN 60204-1. For these devices, EN 60204-1 applies.
76 2 Normative references
77 The following documents are referred to in the text in such a way that some or all of their content
78 constitutes requirements of this document. For dated references, only the edition cited applies. For
79 undated references, the latest edition of the referenced document (including any amendments) applies.
80 EN 61557-1, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. -
81 Equipment for testing, measuring or monitoring of protective measures - Part 1: General requirements
82 EN 61557-2, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. -
83 Equipment for testing, measuring or monitoring of protective measures - Part 2: Insulation resistance
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84 EN 61557-4, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. -
85 Equipment for testing, measuring or monitoring of protective measures - Part 4: Resistance of earth
86 connection and equipotential bonding
87 EN 61557-16, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. -
88 Equipment for testing, measuring or monitoring of protective measures - Part 16: Equipment for testing
89 the effectiveness of the protective measures of electrical equipment and/or medical electrical
90 equipment
91 IEC 60417, Graphical Symbols for Use on Equipment
92 3 Terms and definitions
93 For the purposes of this document, the following terms and definitions apply.
94 ISO and IEC maintain terminological databases for use in standardization at the following addresses:
95 — IEC Electropedia: available at http://www.electropedia.org/
96 — ISO Online browsing platform: available at http://www.iso.org/obp
97 NOTE Some of the definitions are different from those in the product standards for type testing, as different
98 measuring methods are used.
99 3.1
100 electrical safety
101 protection within a piece of equipment which limits the effects of electrical current on a user or other
102 individuals
103 Note 1 to entry: Safety is defined as freedom from unacceptable risk (refer to ISO 14971:2007, definition
104 2.24).
105 3.2
106 testing
107 process of visually controlling, measuring or proving the electrical equipment in order to assure that
108 equipment remains safe to use
109 3.3
110 electrically skilled person
111 skilled person
112 person with relevant education and experience to enable him or her to perceive risks and to avoid
113 hazards which electricity can create
114 [SOURCE: IEV 195-04-01]
115 3.4
116 electrically instructed person
117 instructed person
118 person adequately advised or supervised by electrically skilled persons to enable him or her to
119 perceive risks and to avoid hazards which electricity can create
120 [SOURCE: IEV, 195-04-02]
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121 3.5
122 electrical equipment
123 single apparatus using electrical energy and connected by plug or permanently connected to a final
124 circuit of the distribution system
125 Note 1 to entry: Equipment includes those accessories as defined by the manufacturer that are necessary to
126 enable the normal use of the equipment.
127 3.6
128 final circuit
129 electric circuit intended to directly supply electric current to current-using equipment or
130 socket-outlets
131 [SOURCE: IEV 826-14-03]
132 3.7
133 leakage current
134 current flowing from live parts of the equipment to earth
135 [SOURCE: IEV 442-01-24 modified – the term has changed and a reference to the absence of an
136 insulation fault has been removed.]
137 3.8
138 touch current
139 current passing through a human or animal body when it touches one or more accessible parts of a
140 piece of electrical equipment not connected to protective earth
141 [SOURCE: IEV 195-05-21 modified – the wording of the definition has been narrowed]
142 3.9
143 protective conductor current
144 electric current which flows in a protective conductor and is frequency weighted according to the
145 characteristics of the human body
146 [SOURCE: IEV 826-11-21, modified – the wording of the definition has been expanded.]
147 3.10
148 residual current
149 vectorial sum of the currents flowing in the live conductors of the mains circuit of the equipment and
150 frequency weighted according to the characteristics of the human body
151 [SOURCE: IEV 442-05-19 modified – the wording of the definition has been expanded]
152 3.11
153 insulation resistance
154 resistance under specified conditions between two conductive elements separated by insulating
155 materials
156 [SOURCE: IEV 151-15-43]
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157 3.12
158 protective bonding resistance
159 resistance between any accessible conductive part, which is connected for safety purposes to the
160 protective earth terminal, and the
161 — protective terminal of the mains plug, or
162 — protective terminal of the equipment inlet, or
163 — protective terminal permanently connected to the supply mains;
164 3.13
165 SELV
166 electric system in which the voltage cannot exceed the value of extra-low voltage:
167 — under normal conditions, and
168 — under single fault conditions, including earth faults in other electric circuits
169 Note 1 to entry: SELV is the abbreviation for safety extra-low voltage.
170 [SOURCE: IEV 826-12-31]
171 3.14
172 PELV
173 electric system in which the voltage cannot exceed the value of extra-low voltage:
174 — under normal conditions, and
175 — under single fault conditions, except earth faults in other electric circuits
176 Note 1 to entry: PELV is the abbreviation for protective extra-low voltage.
177 [SOURCE: IEV 826-12-32]
178 3.15
179 recurrent test
180 periodic verification of the effectiveness of protective measures of electrical equipment
181 3.16
182 permanently connected equipment
183 equipment that can only be electrically connected to or disconnected from the mains by the use of a
184 tool
185 3.17
186 pluggable equipment type A
187 equipment that is intended for connection to the mains via a non-industrial plug and socket outlet or
188 via a non-industrial appliance coupler, or both
189 Note 1 to entry: Examples are plugs and socket-outlets covered by standards such as EN 60320-1.
190 3.18
191 current-using equipment
192 electrical equipment intended to convert electrical energy into another form of energy, for example
193 light, heat, mechanical energy
194 [SOURCE: IEC 60050-826:2004, 826-16-02]
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195 3.19
196 hazardous live parts
197 live part which, under certain conditions, can give a harmful electric shock
198 [SOURCE: IEC 60050-826:2004, 826-12-13]
199 4 Requirements
200 Recurrent tests shall be performed by an electrically skilled person or by an electrically instructed
201 person, supervised by an electrically skilled person.
202 Additional requirements (e.g. for the mechanical safety or for fire protection) according to the
203 requirements from the product safety standard shall be taken into account.
204 If testing the equipment requires additional knowledge or additional test and measurement equipment,
205 for example equipment for microwaves, tests shall be done according to the instructions of the
206 manufacturer.
207 All tests shall be performed in such a manner that the risk for testing personnel or other individuals
208 shall be reduced by appropriate protective measures.
209 If not otherwise stated, all values for current and voltage are the r.m.s. values of an alternating, direct
210 or composite voltage or current.
211 The applicable tests as listed in Clause 5 shall be used to advise that:
212 — there are no visible faults on safety related parts, which are accessible by the user and
213 — by the intended use of the equipment, minimized hazard for the user or the environment
214 originates.
215 The electrically skilled person who is responsible for the test shall decide if additional tests are
216 required to meet the protective measures.
217 During a recurrent test the equipment shall not be disassembled. The electrically skilled person may
218 decide that, for equipment that is connected to the distribution system with fixed and protected wiring
219 and is not intended to be hand-held during operation, the test is carried out according to this document
220 and/or according to HD 60364-6.
221 The test procedure shall be interrupted and the equipment shall be disconnected from mains and
222 marked as failed, if it is found that during the test:
223 — reduced safety levels are present due to damage or from unintended use;
224 and/or
225 — functional hazards could occur.
226 5 Tests
227 5.1 General
228 5.1.1 General test conditions
229 The tests may be performed at the ambient temperature, humidity and atmospheric pressure present
230 at the location of testing.
231 If it is obvious that the equipment is contaminated by dust or moisture, it is allowed to clean the
232 equipment under test and/or to allow it to dry before starting the tests
233 The operational limits of the test equipment and the equipment under test shall be taken into account.
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234 The equipment shall be tested according to the test steps in 5.1.1 to 5.1.5, as long as it is possible
235 with the equipment under test. The sequence of testing shall be as defined in this document.
236 Each individual test shall be passed before proceeding to the next test.
237 If it is not possible to perform a certain test step, an electrically skilled person shall decide if the safety
238 of the equipment under test can be confirmed without the test step or by other means. This decision
239 has to be justified and reported.
240 Manufacturer’s instructions on tests to be performed, shall be considered
241 The values in this document shall be used unless the product standard specifically provides in-service
242 limits in which case the product standard limits shall be used or justified values from the manufacturer.
243 External equipment could influence the tests and should be disconnected if possible.
244 NOTE In general this document does not address the measurement of DC leakage currents.
245 5.1.2 Visual inspection
246 Visual inspection shall be performed according to 5.2.
247 5.1.3 Test of the protective measures against electric hazards
248 Test of the protective measures against electric hazards shall be performed according to 5.3 to 5.8.
249 — Confirmation of the effectiveness of the protective bonding to all accessible conductive parts
250 connected for safety reasons to protective earth according to 5.3.
251 — Confirmation of the effectiveness of the insulation by measuring the insulation resistance between
252 live parts and accessible conductive parts:
253 — connected to protective earth (primarily on class I equipment) according to 5.4;
254 — protected by double or reinforced Insulation and not connected to protective earth (primarily
255 on class II equipment but also on class I equipment) according to 5.4;
256 — protected by SELV/PELV according to 5.4.
257 — Confirmation of the compliance with the limits for the leakage currents by measuring of:
258 — the protective conductor current according to 5.5;
259 — The touch current of accessible conductive parts not connected to protective earth, if
260 applicable, according to 5.6.
261 NOTE The measurement of leakage current can be omitted on extension leads, detachable power cables,
262 multiple socket-outlets without electrical parts between live conductors and protective earth.
263 — Confirmation of the compliance with the requirements for the protective measure SELV/PELV by
264 measuring the output voltage, if the output voltage is accessible according to 5.7.
265 — Confirmation of the compliance with the limits for the leakage currents produced by a floating
266 input (e.g. inputs for measuring and control) with a rated input voltage above 50 V a.c or
267 120 V d.c. according to 5.8.
268 5.1.4 Confirmation of the compliance of additional protective measures
269 Confirmation of the compliance of additional protective measures shall be according to 5.9.
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270 5.1.5 Documentation and evaluation of test
271 The documentation and the evaluation of the tests shall be according to Clause 6.
272 5.2 Visual inspection
273 The visual inspection shall take place to detect external defects and, if possible, to determine the
274 qualification of the suitability of the equipment for the environment.
275 Special attention shall be paid to the following (if applicable):
276 — any damage or contamination;
277 — that all cables and connectors are connected in their intended way ;
278 — checking by hand to ensure that the anchorages and the inlets of each connector are properly
279 fixed.
280 — condition of the mains plug and the mains connectors and conductors;
281 — defects of the strain relief of the mains supply cord;
282 — defect of the mains lead cleat;
283 — condition of anchorage, cable clip, accessible fuse insert;
284 — damage of the housing and protective cover that could give access to live or dangerous moving
285 parts;
286 — signs of overload or overheating or unintended use;
287 — signs of improper change;
288 — signs of contamination, corrosion and improper aging;
289 — contamination, blockage of cooling inlets ;
290 — condition of air filter;
291 — tightness of container for water, air, or other medium, condition of pressure control valve;
292 — usability of switches, control and setup equipment;
293 — readability of all safety relevant markings or symbols, of the ratings and of the position indicators;
294 — all fuses accessible from the outside are complying with the data given by the manufacturer (rated
295 current, characteristics) and must be visible on the device;
296 — safety related marking, labels and labelling is legible and complete;
297 — the integrity of mechanical parts;
298 — assess the relevant accessories together with the equipment (e.g. detachable or fixed power
299 supply cords tubing);
300 — defect due to bending of cords, cables, hoses and tubing.
301 NOTE 1 It is appropriate to determine during the visual inspection, if accessible conductive parts, that have to
302 be tested according to 5.3 to 5.8, are present.
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303 NOTE 2 This list is not exhaustive
304 5.3 Measuring of protective bonding resistance
305 The integrity of the connection between:
306 — the protective earth terminal of the equipment (where applicable contact on the mains plug) and
307 — each accessible conductive part, directly connected to the protective earth.
308 NOTE 1 Not directly connected part’s (e.g. mechanical construction parts) could have higher values. On these
309 parts compliance with safety requirements is proved by touch current measurements.
310 The integrity of those connections shall be confirmed by:
311 — visually inspecting the entire length of the protective earth path according to 5.2;
312 — measuring the resistance of each protective terminal; and
313 NOTE 2 During the measurement, the conductor is flexing over the entire length and at the point of entry on
314 the equipment and the mains plug.
315 Test circuits according to Figure 1a or Figure 1b may be used.
316 For cable lengths up to 5 m and a cross section area up to 1,5 mm2, the protective bonding resistance
317 shall not exceed 0,3 Ω. For each further 7,5 m cable length 0,1 Ω shall be added to the limit up to a
318 maximum value of 1 Ω.
319 For cross section areas above 1,5 mm2 and other cable lengths the limit shall be calculated by the
320 following formula.
II
321 R=p+=01,,ΩΩor R + 01
AAκ
322 where
R is the electrical resistance (Ω);
ρ is the standard value of electrical conductivity (m/(Ω mm2) for the metal used for the PE
conductor.;
l is the length of the cable in meters (m);
A is the cross-sectional area of the conductor in square millimetres (mm2);
κ is the electrical conductivity (m/(Ω mm2).
323 NOTE 3 The value of 0,1 Ω in the formulae above takes into account the influence of the contact resistance.
324 It is recommended that care be taken to ensure that the contact resistance between the test probe and
325 the metal part under test does not influence the test result.
326 When equipment under test is permanently connected to the distribution system, an earth reference
327 point on the fixed installation is required to measure the earth continuity. The protective earth
328 conductor shall not be disconnected from the installation and protective covers shall not be removed.
329 NOTE 4 During this measurement parallel earth connections, for example due to the type of installation (water
330 pipe or data line), can influence the result.
331 NOTE 5 Some equipment under test could have accessible metal parts which are earthed only for functional
332 or screening purposes with protection against electric shock being provided by double or reinforced insulation.
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333
334 a) Example measuring circuit for the measurement of protective earth resistance in equipment
335 that is disconnected from the supply mains
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336
337 b) Example measuring circuit for the measurement of protective earth resistance in equipment,
338 which for functional reasons cannot be disconnected from supply mains, or in equipment or
339 permanently connected to mains
340 Key
G generating measuring supply
1 test equipment
2 equipment under test
3 fuse or circuit breaker
4 socket
9.1 test probe to protective earth and to accessible protective parts, connected to PE
9.3 test probe to live parts
10 possible earth connections
341 Figure 1 — Example measuring circuits for the measurement
342 of protective earth resistance
343 5.4 Measurement of the insulation resistance
344 The insulation resistance shall be measured:
345 — between live parts and each accessible conductive part, including protective earth (except PELV);
346 — between live parts of a SELV/PELV circuit and live parts of mains supply.
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347 The test circuits and limits in Table 1 shall be used. The equipment under test shall be disconnected
348 from mainssupply. To include all insulation of all live parts, all switches, controls etc. shall be closed
349 during the measurement. If necessary, the measurements shall be repeated in all switch positions.
350 I
...

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