UL 60730-1

Automatic Electrical Controls for Household and Similar Use, Part 1: General Requirements

UL 60730-1

1 Scope and normative references

1.1 In general, this standard applies to automatic electrical controls for use in, on, or in association with equipment for household and similar use, including 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.

1.1.1 This Standard applies to the inherent safety; to the operating values, operating times, and operating sequence 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.Throughout this Standard the word "equipment" means "appliance and equipment."This standard does not apply to automatic electrical controls intended exclusively for industrial applications unless explicitly mentioned in the relevant part 2.This standard 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.See also annex j.This standard is also applicable to relays when used as controls for IEC 60335 appliances. Additional requirements for the safety and operating values of relays when used as controls for IEC 60335 appliances are contained in Annex U.These requirements are referred to by IEC 61810-1, Scope.This standard is intended to be used for the testing of any stand-alone relay which is intended to be used as a control of an appliance according to IEC 60335-1. It is not intended to be used for any other stand-alone relay, or to replace the IEC 61810 series of standards.

1.1.1DV Modification of 1.1.1 by adding the following after the first paragraph:

In IEC terminology, "safety" is defined as an acceptable level of risk. This is consistent with the intention of UL requirements to reduce the risk of fire, shock or injury to persons.

IEC 61810-1, Electromechanical elementary relays - Part 1: General and safety requirements.

1.1.2 This Standard applies to automatic electrical controls, mechanically or electrically operated, responsive to or controlling such characteristics as temperature, pressure, passage of time, humidity, light, electrostatic effects, flow, or liquid level, current, voltage, acceleration or combinations thereof.

1.1.3 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.

1.1.4 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.

1.2 This standard applies to controls with a rated voltage not exceeding 690 V and with a rated current not exceeding 63 A.

1.2DV.1 Modification of 1.2 by adding the following text:

The maximum voltage is 600 V. The maximum current is unlimited.

1.3 This Standard 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.

1.4 This standard applies also to controls incorporating electronic devices, requirements for which are contained in annex h.This standard applies also to controls using NTC or PTC thermistors, requirements for which are contained in annex j.

1.5 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60730. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 60730 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.

1.5

IEC 60038: 1997, IEC standard voltages

IEC 60050(604): 1987, International Electrotechnical Vocabulary (IEV) - Chapter 604: Generation, transmission and distribution of electricity - Operation

IEC 60065: 2001, Audio, video and similar electronic apparatus - Safety requirements

IEC 60068-2-75: 1997, Environmental testing - Part 2-75: Tests - Test Eh: Hammer tests

IEC 60085: 1984, Thermal evaluation and classification of electrical insulation

IEC 60099-1: 1999,Surge arresters - Part 1: Non-linear resistor type gapped arresters for a.c. systems

IEC 60112: 2003, Method for determination of the proof and the comparative tracking indices of solid insulating materials

IEC 60127-1: 2002, Miniature fuses - Part 1: Definitions for miniature fuses and general requirements for miniature fuse-links

IEC 60216-1: 2001, Property of thermal endurance - Part 1: Ageing procedures and evaluation of test results

IEC 60227-1: 1998, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 1: General requirements

IEC 60245-1: 2003, Rubber insulated cables - Rated voltages up to and including 450/750 V - Part 1: General requirements

IEC 60249, Base materials for printed circuits

IEC 60269-1: 1998, Low-voltage fuses - Part 1: General requirements

IEC 60326-2: 1990, Printed boards - Part 2: Test methods

IEC 60326-3: 1991, Printed boards - Part 3: Design and use of printed boards

IEC 60335-1: 2006, Household and similar electrical appliances - Safety - Part 1: General requirements

IEC 60364 (all parts), Low-voltage electrical installations

IEC 60384-14: 2005, Fixed capacitors for use in electronic equipment - Part 14: Sectional specification: Fixed capacitors for electromagnetic suppression and connection to the supply mains

IEC 60384-16: 1992, Fixed capacitors for use in electronic equipment - Part 16: Sectional specification - Fixed metallized polypropylene film dielectric d.c. capacitors

IEC 60384-17: 1987, Fixed capacitors for use in electronic equipment - Part 17: Sectional specification - Fixed metallized polypropylene film dielectric a.c. and pulse capacitors

IEC 60417, Graphical symbols for use on equipment

IEC 60423: 1993, Conduits for electrical purposes - Outside diameters of conduits for electrical installations and threads for conduits and fittings

IEC 60529: 1999, Degrees of protection provided by enclosures (IP code)

IEC 60539: 2002, Directly heated negative temperature coefficient thermistors - Part 1: General specifications

IEC 60664-1: 2002, Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests

IEC 60664-3: 200