Elektronická měřicí zařízení

Komise : IEC/TC 66 (Safety of measuring, control and laboratory equipment)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 21.08.2018
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This clause of Part 1 is applicable except as follows:

1.1.1     Equipment included in scope

Replace 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:

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.

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.

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 removed from uninsulated hazardous live conductors or from non-limited-energy circuit conductors only when they are de-energised.

EXAMPLE 2 Split-core transducers.

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.

Komise : IEC/TC 66 (Safety of measuring, control and laboratory equipment)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 21.08.2018
Zobraz více Zobraz méně
 

This clause of Part 1 is applicable except as follows:

1.1.1    Equipment included in scope

Replace 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 multimeters for domestic and professional use, capable of measuring mains.

Hand-held multimeters are multi-range multifunction measuring instrument 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.

1.1.2    Equipment excluded from scope

Add the following new item to the list and the following paragraph:

aa) IEC 61557 (Parts 1 to 12) 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

hand-held equipment such as oscilloscopes, wattmeters, process control multimeters not rated for measuring voltage on a live mains, clamp multimeters and communications test sets are not within the scope of this Part.

1.2.1    Aspects included in scope

Add 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 reliance on the displayed value are given in Clause 102.

Komise : IEC/TC 66 (Safety of measuring, control and laboratory equipment)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 12.09.2018
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This clause of Part 1 is applicable, except as follows:

1.1.1 Equipment included in the scope

Replacement:

Replace the leading paragraph to the list a) to c) by the following:

This Part 2 of IEC 61010 specifies particular safety requirements for the following types a) to c) of electrical equipment and their accessories, wherever they are intended to be used, whenever that equipment incorporates refrigerating systems whether an integral part of, or remote to the equipment and the equipment is in direct control of the refrigerating system.  

This Part 2 details all the requirements when up to 150 g of flammable refrigerant are used per stage of a refrigerating system. Additional requirements beyond the current scope of this standard apply if a refrigerant charge of flammable refrigerant exceeds this amount.

Addition:

Add the following text after the last paragraph:

NOTE 101 Examples for refrigerating equipment include, but are not limited to, laboratory equipment such as laboratory refrigerators, freezers, refrigerated display cabinets, etc.

If all or part of the equipment falls within the scope of one or more other Part 2 standards of IEC 61010 as well as within the scope of this standard, it should also meet the requirement of those other Part 2 standards, In particular, if equipment is intended to be used as a centrifuge, it should meet the requirements of IEC 61010-2-020. However, when the equipment incorporates a refrigerating system and a heating function where the combination of the two introduces additional or more sever hazards than if treated separately then the application of IEC 61010-2-012 should be considered instead of this Part 2.

See further information in the flow chart for the selection process and guidance in the Introduction.

1.1.2 Equipment excluded from scope

Addition:

Add the following new item after item j):

aa) equipment incorporating transcritical refrigerant system (system that use CO2) or system that use ammonia (NH3) as the refrigerant.