GB/T 42125.4-2024Safety requirements for electric equipment for measurement, control, and laboratory use - Part 4: Particular requirements for climatic and environmental testing and other temperature conditioning equipment (English PDF)

1.1.1

Equipment to which this document applies replace.

Replace the second paragraph with the following.

This document specifies the safety requirements for electrical equipment of categories a) to c) and their accessories, regardless of their intended use, provided that the equipment contains the following

Next one or more characteristics.

--- A cooling system that is affected or influenced by a self-contained heating function, making the combined heating and cooling system different from a single heating or cooling system.

The system presents additional and/or more severe hazards than the

---In the intended application, the material to be processed will introduce significant heat into the refrigeration system, causing the refrigeration system to

There may be additional and/or more severe hazards than when operating with

--- Irradiation of the material to be processed may create additional hazards.

--- Exposing the material to be treated to high humidity, carbon dioxide, salt spray or other substances may create additional hazards.

--- Mechanical movement functions create additional hazards.

--- Provide conditions for operators to enter the operating area to load or unload materials to be processed.

Increase.

Add the following after the first paragraph.

NOTE 101.For example, this type of equipment includes environmental test and plant growth test chambers, refrigeration cycle devices with heating functions, cooling water circulation devices for removing heat, and

Ring device, etc.

Equipment, in whole or in part, may fall within the scope of this document and one or more other parts of the IEC 61010 series of standards.

Scope. In this case, the requirements of these standards also apply. This document applies when one or more additional hazards listed above are introduced.

However, if the equipment only contains a cooling system, or only contains a heating function, or contains both a cooling system and a heating function but does not introduce

If there are additional hazards described in the above items, then use IEC 61010-2-011 or IEC 61010-2-010, or both, as applicable.

Replaces this document.

Further information is provided in the selection process flow chart (Figure 102) and guidelines in the Introduction.

NOTE 102.3.1.107 and Appendix BB provide the definition of walk-in equipment and the requirements for protecting persons therein.

1.1.2 Equipment not included in the scope of this document

Increase.

Add the following columns after item j).

aa) Heating, cooling and ventilation equipment for laboratories;

bb) Sterilization equipment.