UNE-EN IEC 61010-2-032:2021

1 Scope and objectThis clause of Part 1 is applicable except as follows:1.1.1 Equipment included in scopeReplace the existing text with the following: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.This part of IEC 61010 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.NOTE 1 a combined equipment is an equipment that is electrically connected to a current sensor by means of a permanent connection which can be detached only by the use of a TOOL.NOTE 2 Some current sensors are also known as current clamps, CLAMP MULTIMETERS and current probes.Current sensors require hand-manipulation before and/or after a test or measurement, but do not necessarily need to be HAND-HELD during the test or measurement. Current sensors used as FIXED EQUIPMENT are not within the scope of this part.The following types of current sensors are covered:a) Type A: a current sensor designed to be applied to or removed from UNINSULATED HAZARDOUS LIVE conductors. Type A current sensors have defined HAND-HELD or hand-manipulated parts providing protection against electric shock from the conductor being measured, and also have protection against short-circuits between wires and between busbars during clamping.b) Type B: a current sensor which has protection against short-circuits between wires or busbars during clamping but without defined HAND-HELD or hand-manipulated parts which provide protection against electric shock during clamping. Additional protective means are necessary to avoid electric shock from HAZARDOUS LIVE conductors which cannot be de-energised during application or removal of the current sensor.EXAMPLE 1 Flexible current sensors.c) Type C: a current sensor without protection against short-circuits between wires or busbars during clamping. Type C current sensors are intended to be applied to or conductors only when they are de-energised.EXAMPLE 2 Split-core transducers.d) Type D: a current sensor designed to be applied to or removed from insulated conductors or from limited-energy circuit conductors.EXAMPLE 3 Current probes for oscilloscopes and earth leakage current detectors.All current sensors can also be used to insulated conductors. In this case, HAZARDS are limited to acceptable levels by the insulation of the conductors.Additional requirements for CLAMP MULTIMETERS are given in Annex EE.The following Figure 101 shows graphical representations of typical current sensors for illustration purposes. Current sensors may look different depending on the design.1.2.1 Aspects included in scopeAdd the following two new paragraphs at the end of the subclause:Requirements for protection against HAZARDS resulting from NORMAL USE and REASONABLY FORESEEABLE MISUSE of measuring circuits are given in Clause 101.Requirements for prevention of HAZARD from arc flash and short-circuits are given in Clause 102.Requirements for reliance on the displayed value of CLAMP MULTIMETERS are given in EE.5.