WG 2 - TC 66/WG 2

IEC 61010-2-034:2023 specifies safety requirements to equipment for measuring insulation resistance and to equipment for testing electric strength which have an output voltage exceeding 50 V a.c. or 120 V d.c. This document also applies to combined measuring equipment which has an insulation resistance measurement function or an electric strength test measurement function. This document has the status of a horizontal publication in accordance with IEC Guide 108. It has the status of a group safety publication in accordance with IEC Guide 104. This second edition cancels and replaces the first edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) in 1.2.1, requirements for protection against hazards which could occur from reading a voltage have been added to the scope;
b) Clause 2, all normative references have been dated; new normative references have been added;
c) in 4.3.2.5, requirements for power supply have been modified;
d) in 4.3.2.6, requirements for inputs/outputs have been modified;
e) in 5.1.5.101.2, minimum ratings for voltage of measuring terminals are required;
f) in 5.4.2, new ratings for documentation have been added;
g) in 5.4.4, new instructions for operation have been added;
h) in 5.101.1, hazard indicators shall be functional in normal condition and in single fault condition;
i) in 6.6.101.1, insulating material of group I may be allowed for determination of creepage distances of measuring circuit terminals;
j) in 6.6.101.2, Clearances and creepage distances above 1 000 V a.c. and 1 500 V d.c. for measuring circuit terminals in unmated position have been defined;
k) in 6.6.101.3, requirements for measuring circuit terminals in partially mated position have been specified;
l) in 6.6.101.4, requirements for measuring circuit terminals in mated position have been specified;
m) Subclause 6.102 replaces 6.9.103 and has been rephrased;
n) new Subclause 9.101 to consider the protection of measuring circuits against the spread of fire and arc flash has been added. Table 102 has been replaced by Table K.101;
o) In 9.101.2, relocation of 101.3 of previous edition;
p) In 9.101.3, relocation of 101.4 of previous edition, extension to measurement category II and reference to IEC 61000-4-5 for tests;
q) in 9.101.4, requirements for measuring circuit terminals in mated position have been specified;
r) in 9.101.5, relocation of K.103 of previous edition with numerous technical changes;
s) in 14.101, relocation of 14.102. 14.101 of previous edition has been removed;
t) in 101.3, relocation of 101.5 of previous edition, and more requirements added against hazard occurring from reading a voltage value;
u) in K.2.1, another method for determination of clearances of secondary circuits is proposed;
v) in K.3.2, new Table K.15 and Table K.16 for clearance calculation;
w) in K.3.101, relocation of 6.9.104 of previous edition;
x) in K.101.4.1, new Table K.103 and Table K.104 replace Table K.102, Table K.103 and Table K.104;
y) in K.101.4, the subclause has been reviewed. Tables and tests for solid insulation have been modified. Table K.105 replaces Table K.9;
z) Table K.101, replacement of Table K.106;
aa) Clause K.4, redraft of the clause to propose a method for determination of Ut for circuits which reduce transient overvoltages;
bb) Annex EE: addition of a new informative annex for determination of clearances for Table 101.

IEC 61010-031:2022 specifies safety requirements for hand-held and hand-manipulated probe assemblies for electrical test and measurement, and their related accessories. These probe assemblies are for non-contact or direct electrical connection between a part and electrical test and measurement equipment. They can be fixed to the equipment or be detachable accessories for the equipment.
It has the status of a group safety publication in accordance with IEC Guide 104.
This third edition cancels and replaces the second edition published in 2015, and Amendment 1:2018. IEC 61010-031 is a stand-alone standard. This edition includes the following significant technical changes with respect to the previous edition:
the scope has been made succinct. General information from the scope of Edition 2 has been moved to a new Clause 4. Consequently, Clause 4 to Clause 8 of Edition 2 have been renumbered. Clause 9 of Edition 2 has been deleted;
in Clause 2, normative references have been dated and new normative references have been added;
in 3.1.4, the definition of probe tip has been modified;
in 4.1, there is no longer any differentiation between high voltage and low voltage probe assemblies. Type C probe assemblies have been merged with Type B probe assemblies;
in 4.1 d) "Kelvin" probes have been added to the list of probe assemblies as a new Type E and a new Figure 5;
in 4.1 e), probes for voltage measurement without electrical connection to conductors have been added to the list of probe assemblies as a new Type F and a new Figure 6;
in 4.2.1, spread of fire is no longer considered as a hazard;
Subclause 4.4.2.5 from Edition 2 has been deleted;
Subclause 4.4.4.3 from Edition 2 has been deleted;
in 5.4.4.1 consideration has been given to spacings and impedance;
in 6.1.1, removable parts of probe tips which bear markings are allowed;
in 6.1.5, the voltage to be marked for measurement categories is the AC line-to-neutral or DC voltage;
in 7.4.2, requirements for unmated connectors have been modified as follows:
Table 2 has been modified and expanded,
a calculation method for clearances of connectors above 20 kV has been defined,
creepage distances have been aligned with clearances;
in 7.4.3.1 and 7.4.3.5, requirements for IP2X probe tips with retractable sleeve have been added;
in 7.4.3.2, Probe tips are now applicable to non-contact probe assemblies;
in 7.5.2.3.2, the values of Table 5 have been modified;
in 7.6.2, voltage tests of clearances are done without humidity preconditioning;
pre-treatments for rigidity test from Clause 10 of Edition 2 have been moved to 9.2;
Subclause 11.1 of Edition 2 has been deleted;
addition of an exception for Type E probe assembly in 13.2. Removable parts of probe tips which bear markings are allowed;
Figure F.1 has been modified;
Annex G has been added, for determination of clearances for Table 2;
Annex H has been added, covering line-to-neutral voltages for common mains supply systems.

IEC 61010-2-033:2019 is available as IEC 61010-2-033:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61010-2-033:2019 specifies safety requirements for hand-held multimeters for domestic and professional use, capable of measuring mains. Hand-held multimeters are multi-range multifunction measuring instruments intended to measure voltage and other electrical quantities such as resistance or current. Their primary purpose is to measure voltage on a live mains. They are suitable to be supported by one hand during normal use. This second edition cancels and replaces the first edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- The scope has been reduced to hand-held multimeters. Voltmeters and clamp multimeters have been removed. They are addressed respectively by IEC 61010-2-030 and IEC 61010-2-032. The relevant definitions have been removed.
- Subclause 4.4.2.101 has been relocated into Clause 102.
- Clearances and creepage distances for wet locations and for measuring circuit terminals exceeding 1 000 V a.c. or 1 414 V d.c. have been specified.
- Subclause 14.101 related to "Circuits or components used as transient overvoltage limiting devices in measuring circuits used to measure mains" has been removed.
- References to IEC 61010-031 for probe assemblies and IEC 61010-2-032 for current sensors have been added.
- Requirements for protection against mains overvoltage measuring circuits have been added.
- Clause 102 has been rewritten.
- Requirements for measuring circuits from 1 000 V to 3 000 V have been added.
- An informative Annex CC about dimensions of 4-mm banana terminals has been added.
- A flowchart for insulation according to the type of circuit has been added in a new Annex DD.

IEC 61010-2-032:2019 is available as IEC 61010-2-032:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61010-2-032:2019 specifies safety requirements for hand-held and hand-manipulated current sensors described below. These current sensors are for measuring, detecting or injecting current, or indicating current waveforms on circuits without physically opening the current path of the circuit being measured. They can be stand-alone current sensors or accessories to other equipment or parts of combined equipment (see Figure 101). These include measurement circuits which are part of electrical test and measurement equipment, laboratory equipment, or process control equipment. These current sensors and circuits need additional protective means between the current sensor, the circuit and an operator. This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- It has been indicated that current sensors used as fixed equipment are not within the scope of this document.
- Fork-style current sensors have been added.
- Requirements from Part 2-033 applicable to clamp multimeters that have a primary purpose of measuring voltage on live mains have been included in the new normative Annex EE.
- Clearances and creepage distances for measuring circuit terminals exceeding 1 000 V a.c. or 1 414 V d.c. and for wet locations have been specified.
- Reduced creepage distances are allowed to be according to material group I for all insulating materials.
- Requirements for input/output circuits of Type A, Type B and Type C current sensors have been detailed in 6.9.102.
- Requirements for output circuit leads have been modified.
- The Jaw impact test has been limited to the front of the jaws.
- The abrasion test for cords of flexible current sensors has been removed and replaced by a pressure test at high temperature.
- The voltage source for testing overvoltage limiting components or circuits may be limited to 400 V.
- Reference to IEC 61010-031 for probe assemblies has been added.
- Requirements for the prevention of transient overvoltages for mains voltage measuring circuits have been added.
- Requirements for measuring circuits from 1 000 V to 3 000 V have been added.
- An informative Annex CC about the dimensions of banana terminals has been added.
- A flowchart for insulation according to the type of circuit has been added in a new Annex DD.
The contents of the corrigendum of February 2020 have been included in this copy.

IEC 61010-031:2015 is available as IEC 61010-031:2015 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61010-031:2015 specifies safety requirements for hand-held and hand-manipulated probe assemblies of the types described below, and their related accessories. These probe assemblies are for direct electrical connection between a part and electrical test and measurement equipment. They may be fixed to the equipment or be detachable accessories for the equipment. It has the status of a group safety publication in accordance with IEC GUIDE 104. IEC 61010-031 is a stand-alone standard. This second edition cancels and replaces the first edition published in 2002 and Amendment 1:2008. This edition constitutes a technical revision. This edition includes the following significant changes from the first edition, as well as numerous other changes:
a) Voltages above the levels of 30 V r.m.s., 42,4 V peak, or 60 V d.c. are deemed to be HAZARDOUS LIVE instead of 33 V r.m.s., 46,7 V peak, or 70 V d.c.
b) Servicing is now included within the scope.
c) Extended environmental conditions are included within the scope.
d) New terms have been defined.
e) Tests for REASONABLY FORESEEABLE MISUSE have been added, in particular for fuses.
f) Additional instruction requirements for probe assembly operation have been specified.
g) Limit values for ACCESSIBLE parts and for measurement of voltage and touch current have been modified.
h) SPACINGS requirements for mating of CONNECTORS have been modified.
i) PROBE TIPS and SPRING-LOADED CLIPS requirements have been modified. The PROTECTIVE FINGERGUARD replace the BARRIER with new requirements.
j) Insulation requirements (6.5) and test procedures (6.6.5) have been rewritten and aligned when relevant with Part 1. Specific requirements have been added for solid insulation and thin-film insulation.
k) The terminology for MEASUREMENT CATEGORY I has been replaced with the designation "not RATED for measurements within MEASUREMENT CATEGORIES II, III, or IV".
l) The flexing/pull test (6.7.4.3) has been partially rewritten.
m) Surface temperature limits (Clause 10) have been modified to conform to the limits of IEC Guide 117.
n) Requirements for resistance of PROBE WIRES to mechanical stresses have been added in Clause 12 and a new Annex D.
o) Requirements have been added regarding the prevention of HAZARD from arc flash and short-circuits for SPRING-LOADED CLIPS.
p) A new informative Annex E defines the dimension of the 4 mm banana CONNECTORS.

IEC 61010-2-030:2017 is also available as IEC 61010-2-030:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61010-2-030:2017 This group safety publication is primarily intended to be used as a product safety standard for the products mentioned in the scope, but shall also be used by technical committees in the preparation of their publications for products similar to those mentioned in the scope of this standard, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51.
IEC 61010-2-030:2017 specifies safety requirements for equipment having testing or measuring circuits which are connected for test or measurement purposes to devices or circuits outside the measurement equipment itself.
These include measuring circuits which are part of electrical test and measurement equipment, laboratory equipment, or process control equipment. The existence of these circuits in equipment requires additional protective means between the circuit and an OPERATOR.
This second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
Reference to IEC 61010-031 for probe assemblies and IEC 61010-032 for current sensors has been added.
Indirect bonding for testing and measuring circuits has been modified, in particular to take into account the duration of current flow versus body current for a.c. and d.c. currents according to IEC TS 60479-1 and IEC TS 60479-2.
Clearance and creepage distance for wet locations and for measuring circuit terminal exceeding 1 000 V a.c. or d.c have been specified.
The voltage source for testing overvoltage limiting component or circuit may be limited to 400 V.
Requirements against transient overvoltages for mains voltage measuring circuits have been added.
Requirements for measuring circuits from 1 000 V d.c. to 1 500 V d.c. have been added.
The corrigendum has been included in Tables K.102 to K.104.
Requirements for reduction of transient overvoltages have been modified.
An informative Annex CC about the dimensions of banana terminals has been added.
Flowchart for insulation according to the type of circuit has been added in a new Annex DD.
It has the status of a group safety publication in accordance with IEC Guide 104.

IEC 61010-2-034:2017 This group safety publication is primarily intended to be used as a product safety standard for the products mentioned in the scope, but shall also be used by technical committees in the preparation of their publications for products similar to those mentioned in the scope of this standard, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51.
IEC 61010-2-034:2017 specifies safety requirements for measurement equipment for insulation resistance and test equipment for electric strength with an output voltage exceeding 50 V a.c. or 120 V d.c.
This document also applies to combined measuring equipment which has an insulation resistance measurement function or an electric strength test measurement function. This publication is to be read in conjunction with IEC 61010-1:2010.

IEC 61010-2-032:2012 specifies safety requirements for HAND-HELD and hand-manipulated current sensors described below. These current sensors are for measuring, detecting or injecting current, or indicating current waveforms on circuits without physically opening the current path of the circuit being measured. They may be stand-alone current sensors or accessories to other equipment or parts of combined equipment (see Figure 101). These include measurement circuits which are part of electrical test and measurement equipment, laboratory equipment, or process control equipment. The existence of these current sensors and circuits in equipment requires additional protective means between the current sensor, the circuit and an OPERATOR. This third edition cancels and replaces the second edition published in 2002. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) A new Type D current sensor has been defined.
b) The terminology for MEASUREMENT CATEGORY I has changed. In this Part 2-032, it is termed "not RATED for measurements within MEASUREMENT CATEGORIES II, III, or IV".
c) Requirements for markings of measuring circuit TERMINALS and JAWS have been modified.
d) CLEARANCES and CREEPAGE DISTANCES have been added for unmated measuring circuit TERMINALS.
e) Requirements have been added for specialized measuring circuit TERMINALS.
f) The pull test for endcaps of flexible current sensors has been revised.
g) Requirements for output circuit leads have been revised.
h) Requirements have been added for temperature limits and resistance to heat to prevent thermal HAZARDS from eddy currents and high currents.
i) Requirements for circuits or components used as TRANSIENT OVERVOLTAGE limiting devices have been revised.
j) Requirements have been added for low battery indication.
k) Requirements have been revised and added pertaining to REASONABLY FORESEEABLE MISUSE of measuring circuits, including usage of the current sensor in a manner that might cause arc flash.
l) Requirements for MAINS voltage measuring circuits have been added.
m) Requirements to prevent HAZARDs from short-circuits have been revised and located in a new Clause 102.
n) ROUTINE TESTS have been modified.
o) Insulation requirements for measuring circuits have been primarily located in Annex K.
p) Annex AA has been added to describe the characteristics of MEASUREMENT CATEGORIES.
q) Annex BB has been added to describe HAZARDS that may be encountered when using measuring circuits.
This publication is to be read in conjunction with IEC 61010-1:2010.

IEC 61010-2-033:2012 specifies safety requirements for METERS. The METERS that have a primary purpose of measuring voltage on a live MAINS CIRCUIT are within the scope of this standard. They have various names, but all of them have capability for measurements of voltages on a live MAINS CIRCUIT. Some of the names given to this equipment are as follows:
- MULTIMETER;
- digital MULTIMETER;
- VOLTMETER;
- clamp METER (see also Part 2-032).
For the purpose of this standard, the term METER is used for these HAND-HELD measuring instruments.
This publication is to be read in conjunction with IEC 61010-1:2010.

IEC 61010-2-030:2010 specifies safety requirements for testing and measuring circuits which are connected for test or measurement purposes to devices or circuits outside the measurement equipment itself. These include measurement circuits which are part of electrical test and measurement equipment, laboratory equipment, or process control equipment. The existence of these circuits in equipment requires additional protective means between the circuit and an OPERATOR. This Part 2-030 is to be used in conjunction with the latest edition of IEC 61010-1. It was established on the basis of the third edition (2010) of IEC 61010-1. Consideration may be given to future editions of, or amendments to, IEC 61010-1.
This publication is to be read in conjunction with IEC 61010-1:2010. The contents of the corrigendum of May 2011 have been included in this copy.