UL 60730-2-22:2020 PDF Download

The UL 60730-2-22:2020 standard is a standard that provides requirements for the evaluation of thermal motor protectors used in household and similar applications. This standard applies to thermal motor protectors that are integrated with the motor winding and are dependent on correct mounting and fixing in or on a motor.

The standard addresses various aspects of thermal motor protectors, including their ability to accurately sense motor overload conditions and motor locked-rotor conditions. It also considers the influence of the motor's electromagnetic field on the switch behavior of the thermal motor protector. Additionally, the standard incorporates requirements for thermal motor protectors using NTC or PTC thermistors, and contains additional requirements in Annex J.

The UL 60730-2-22:2020 standard applies to thermal motor protectors used in household and similar equipment, as well as sealed motor-compressors. It does not apply to thermal motor protectors designed exclusively for industrial applications. The standard also provides safety requirements for the operation values, operating times, and operating sequences associated with equipment safety.

Normative references mentioned in the standard include IEC 60730-1 (fourth edition), which provides the general requirements for automatic electrical controls, and IEC 60335-2-34, which provides requirements for the combination of sealed motor-compressors and thermal motor protectors.