UL Standard for Safety Automatic Electrical Controls For Household and Similar Use; Part 2: Particular Requirements For Temperature Sensing Controls (First Edition)
This part of IEC 60730 applies to automatic electrical temperature SENSING CONTROLS for use in@ on or in association with equipment for household and similar use@ including ELECTRICAL CONTROLS for heating@ air-conditioning and similar applications. The equipment may use electricity@ gas@ oil@ solid fuel@ solar thermal energy@ etc.@ or a combination thereof. This part 2-9 applies to automatic ELECTRIC CONTROLS using NTC or PTC THERMISTORS@ additional requirements for which are contained in annex J. This part 2-9 applies to inherent safety and to OPERATING VALUES@ OPERATING TIMES and OPERATING SEQUENCES where such are associated with equipment safety. It applies also to the testing of automatic ELECTRICAL CONTROL devices used in@ or in association with@ household or similar appliances. Examples of such controls include BOILER THERMOSTATS@ FAN CONTROLS@ TEMPERATURE LIMITERS and THERMAL CUT-OUTS. This part 2-9 does not apply to automatic ELECTRICAL CONTROLS designed exclusively for industrial applications. This part 2-9 is also applicable to individual controls utilized as part of a control system or controls which are mechanically integral with multifunctional controls having non-electrical outputs. This part 2-9 applies to inherent safety and to OPERATING VALUES@ OPERATING TIMES and OPERATING SEQUENCES where such are associated with equipment safety. It applies also to the testing of automatic ELECTRICAL CONTROL devices used in@ or in association with@ household or similar appliances. Examples of such controls include BOILER THERMOSTATS@ FAN CONTROLS@ TEMPERATURE LIMITERS and THERMAL CUT-OUTS. This part 2-9 does not apply to automatic ELECTRICAL CONTROLS designed exclusively for industrial applications. This part 2-9 is also applicable to individual controls utilized as part of a control system or controls which are mechanically integral with multifunctional controls having non-electrical outputs. Automatic ELECTRICAL CONTROLS for equipment 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 this standard.This part 2-9 also applies to the electrical safety of temperature SENSING CONTROLS with non-electrical outputs such as refrigerant flow and gas controls.This standard applies to starting relays@ which are a specific type of automatic electrical control@ intended to switch the starting winding of a motor. Such controls may be built into@ or be separate from@ the motor.This part 2-9 is also applicable to controls for appliances within the scope of IEC 60335. Throughout this part 2-9 the word "equipment" includes "appliance" and "control system".This standard applies to manual controls when such are electrically and/or mechanically integral with automatic controls. Requirements for manual switches not forming part of an automatic control are contained in IEC 61058-1.?This part 2-9 applies to BI-METALLIC SINGLE OPERATION DEVICES as defined in this standard.This standard 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 automatic electrical control devices used in@ or in association with@ household or similar equipment. This standard is also applicable to controls for appliances within the scope of IEC 60335-1. Requirements for manual switches not forming part of an automatic control are contained in IEC 61058-1. This part 2-9 applies to BI-METALLIC SINGLE OPERATION DEVICES as defined in this standard.This part 2-9 applies to controls with a RATED VOLTAGE not exceeding 660 V and with a RATED CURRENT not exceeding 63 A.This part 2-9 does not 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 household equipment standard or as determined by the manufacturer shall apply.This part 2-9 applies also to controls incorporating electronic devices@ requirements for which are contained in annex H.