Standards Development

Scope

This clause of Part 1 is replaced by the following:

This standard applies to automatic displacement electrical controls

• for use in, on, or in association with appliances for household and similar use;

NOTE 101 One of examples is controls used in electrical pressure cookers.

• for pressure cookers, with gross volume up to 25litres, with working pressure over 4 kPa and less than 150 kPa;

• a.c. or d.c. powered controls with a rated voltage not exceeding 240 V a.c. or 210 V d.c. where the d.c. source may be provided by primary batteries or secondary batteries;

• used in, on, or in association with equipment that use electricity;

• that are mechanically or electrically operated, responsive to change of position of point of action.

This standard applies to

• inherent safety of automatic electro-mechanical displacement electrical controls;

• functional safety of automatic electro-mechanical displacement electrical controls;

• the operating values, operating times, and operating sequences where such are associated with equipment safety.

NOTE 102 Requirements for manual switches not forming part of an automatic control are contained in IEC 61058 series.

NOTE 103 Throughout this document, the word “control” means “displacement electrical control”.

This standard specifies the requirements for construction, operation and testing of automatic displacement electrical controls used in, on, or in association with equipment.

This standard does not:

• apply to automatic electronic controls

• take into account the response value of an automatic action of a control, if such a response value is dependent upon the method of mounting the control in the equipment. Where a response value is of significant purpose for the protection of the user, or surroundings, the value defined in the appropriate equipment standard or as determined by the manufacturer shall apply.

NOTE 104 This standard may also apply to displacement electrical controls having temperature sensing element(s), in which cases additional requirements may be considered to be necessary. Requirements for temperature sensing controls are included in IEC 60730-2-9.

For more information about guidance to the application of displacement electrical controls see Annex AA.