BS EN IEC 60730-2-22:2020

What is BS EN IEC 60730-2-22 about?

BS EN IEC 60730-2-22 discusses thermal motor protectors. BS EN IEC 60730-2-2 specifies requirements for thermal motor protector which is used in households and similar appliances like heating, air conditioning.

Note 1: BS EN IEC 60730-2-22 applies to the partial evaluation of thermal motor protectors for household and similar use, including heating, air conditioning, and similar applications as well as for sealed (hermetic and semi-hermetic type) motor compressors.

Note 2: A thermal motor protector is considered an integrated control since its protective functionality is dependent on the correct mounting and fixing in or on a motor and which can only be fully tested in combination with the relevant motor. This dependency is illustrated by:

• The ability of the thermal motor protector to accurately and reliably sense the heat of the motor windings thus addressing the over-temperature protection due to motor overload conditions
• The ability of the thermal motor protector to sense accurately and reliably the current due to motor locked rotor conditions; thus, reducing the response time and not being adversely affected by heat-sink at the assembly spot in the application
• The influence of the motor’s electromagnetic field on the switch behaviour of the thermal motor protector particularly, affects the arc direction between the contacts resulting in uneven wear of the contact material and eventually leading to failure of the operation.

Note 3: BS EN IEC 60730-2-22 applies to thermal motor protectors using NTC or PTC thermistors.

Note 4: BS EN IEC 60730-2-22 applies to the inherent safety, to the operating values, operating times, and operating sequences, where such are associated with equipment safety, and to the testing of thermal motor protectors used in or on household or similar equipment as well as sealed (hermetic and semi-hermetic type) motor-compressors.

Note 5: Thermal motor protectors not intended for normal household use, but which nevertheless may be used by the public, such as equipment intended to be used by laymen in shops, in light industry, and on farms, are within the scope of BS EN IEC 60730-2-22.

Note 6: BS EN IEC 60730-2-22 does not apply to thermal motor protectors designed exclusively for industrial applications.

Note 7: BS EN IEC 60730-2-22 does not apply to other means of motor protection.

Note 8: BS EN IEC 60730-2-22 does not apply to a manual device for opening the circuit.

Who is BS EN IEC 60730-2-22 for?

BS EN IEC 60730-2-22 on requirements for thermal motor protectors is useful for:

• Thermal motor protector manufacturers
• Electronic or electrical appliance manufacturers
• Quality control laboratories

Why should you use BS EN IEC 60730-2-22?

BS EN IEC 60730-2-22 provides requirements to protect personnel from electric shock, motor protector, the conductors of the motor branch circuit, and the motor itself from high currents.

The thermal protector is present to turn the motor off when excessive heat is generated within the motor circuitry. BS EN IEC 60730-2-22 specifies safety feature halts the temperature climb before it burns up the motor and helps users during the use of appliances with safety.

BS EN IEC 60730-2-22 provides safety requirements for thermal motor protectors which are used in heating, air conditioning, and similar applications, that help you to ensure protection against electric shock.