Automatic electrical controls — Part 2-7: Particular requirements for timers and time switches (IEC 60730-2-7:2015, MOD)
This clause of Part 1 is applicable except as follows:
In general, this part of IEC 60730 applies to timers and time switches that may use electricity,
gas, oil, solid fuel, solar thermal energy, etc. or a combination thereof, including heating, air
conditioning and similar applications.
This standard is also applicable to individual timers utilized as part of a control system or
timers which are mechanically integral with multifunctional controls having non-electrical
outputs. This standard does not apply to time-delay switches (TDS) within the scope of
NOTE 1 Throughout this standard, the word “timers” means timers and time switches, unless the type is
NOTE 2 Devices which only indicate time or passage of time are not included.
NOTE 3 This standard does not apply to multi-functional controls having an integrated timing function which is not
capable of being tested as a separate timing device.
This standard applies to the inherent safety, to the operating characteristics where such are
associated with equipment protection and to the testing of timers used in appliances and other
apparatus, electrical and non-electrical, for household and similar purposes, but also
extended to industrial purposes when no dedicated product standards exist, such as that for
central heating, air conditioning, process heating, etc.
Timers 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 standard is also applicable to timers for appliances within the scope of IEC 60335-1.
This standard applies to manual controls when such are electrically and/or mechanically
integral with timers.
This standard applies also to timers incorporating electronic devices, requirements for which
are contained in Annex H.
This standard applies also to timers using NTC or PTC thermistors, requirements for which
are contained in Part 1, Annex J.
1.5 Normative references
This subclause of Part 1 applies except as follows:
IEC 60669-1:1998, Switches for household and similar fixed-electrical installations – Part 1:
IEC 60695-11-10:2013, Fire hazard testing – Part 11-10: Test flames – 50 W horizontal and
vertical flame test methods