IEC 61010-2-033:2019

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 61010-2-033:2023 specifies safety requirements for hand-held multimeters and other meters 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 third edition cancels and replaces the second edition published in 2019. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Clause 2, all normative references have been dated and new normative references have been added; b) 4.4.2.101 is a new subclause about surge protective devices; c) Subclause 6.6.101 modifies 6.6.101 and 6.6.102 of previous edition: 1) in 6.6.101.1, insulating material of group I may be allowed for determination of creepage distances of measuring circuit terminals; 2) in 6.6.101.2, Clearances and creepage distances up to 3 000 V for measuring circuit terminals in unmated position have been defined; 3) in 6.6.101.3, requirements for measuring circuit terminals in partially mated position have been specified; 4) in 6.6.101.4, requirements for measuring circuit terminals in mated position have been specified; 5) Subclause 6.6.101.5 replaces 6.6.102; d) Subclause 6.101 replaces 6.9.101 of the previous edition with modifications; e) 9.101 is a new subclause to consider the protection of measuring circuits against the spread of fire and arc flash; f) in 9.101.2, relocation of 101.3 of previous edition; g) in 9.101.3, relocation of 101.4 of previous edition; h) in 101.3, relocation of Clause 102 of previous edition; i) in K.2.1, another method for determination of clearances of secondary circuits is proposed; j) in K.3.2, new Table K.15 and Table K.16 for clearance calculation; k) Clause K.4 of the previous edition has been deleted; l) Subclause K.101.4 has been reviewed; m) Table K.104 of the previous edition has been deleted; n) Annex AA: Figure AA.1 has been redesigned; o) Annex EE: addition of a new informative annex for determination of clearances for the purposes of Table 101.