IEC 61010-2-030:2023 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. These circuits in equipment have additional protective means between the circuit and an operator. This third edition cancels and replaces the second 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 and 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 4.4.2.101, a new subclause about surge protective devices has been added;
f) in 5.1.5.101.2, minimum ratings for voltage of measuring terminals are required;
g) 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;
h) Subclause 9.101 to consider the protection of measuring circuits against the spread of fire and arc flash has been added and Table 102 has been replaced by Table K.101;
i) in 9.101.2, relocation of 101.3 of previous edition;
j) 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;
k) in 14.101, relocation of 14.102 and 14.101 of previous edition has been removed;
l) in 101.3, relocation of 101.5 of previous edition, and more requirements added against hazard occurring from reading a voltage value;
m) in K.2.1, another method for determination of clearances of secondary circuits is proposed;
n) in K.3.2, new Table K.15 and Table K.16 for clearance calculation;
o) in K.101.4.1, new Table K.103 and Table K.104 replace Table K.102, Table K.103 and Table K.104;
p) 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;
q) Table K.101, replacement of Table K.106;
r) Clause K.4, redraft of the clause to propose a method for determination of Ut for circuits which reduce transient overvoltages;
s) Annex AA: Figure AA.1 has been redesigned;
t) Annex EE: addition of a new informative annex for determination of clearances for Table 101.
It has the status of a group safety publication in accordance with IEC Guide 104.