Standards

This clause of Part 1 is replaced by the following : This International standards deals with the safety of electrical motor-operated vacuum cleaners and includes appliances and stationary equipment specifically designed for wet suction, dry suction, or wet and suction for industrial and commercial use with or, without attachments, for example for suction to withdraw dust or the like from work benches and production machines, their rated voltage being not more than 250V for single-phase appliances and 480 V for other appliances.

This clause of Part 1 is replaced by the following : This International standard deals with the safety of electric drives for rolling equipment such, as shutters, blinds and awning, intended for household and similar purposes, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances.

This clause of Part 1 is replaced by the following. This International standard deals with the safety of gas, oil and solid - fuel burning appliances having electrical connections, for household and similar purposes, their rated voltage being not more than 250 V for single- phase appliances and 480 V for other appliances.

This clause of part it is replaced by the following. This International standard deals with the safety of electric drives for horizontally and vertically moving gates, doors and windows for household and purposes, their rated voltage being not more than 250 V for single -phase appliances and 480 V for other appliances and 480 V for other appliances. It also covers the hazards associated with the movement of the driven part.

This clause of Part 1 is replaced by the following . This International standard deals with the safety of electrical appliances to recover and/or recycle refrigerant from air conditioning and refrigeration equipment incorporating open drive or motor- compressors, their maximum rated voltages being not more than 250 V for single phase appliances and 600 V for all other appliances.

This clause of Part 1 is replaced by the following . This standard deals with the safety of electric multifunctional shower cabinets for household and similar purposes, their rated voltage being not more than 235 V for single-phase appliances and 480 V for other appliances.

Part 4-41 pf IEC specifies essential requirements regarding protection against electric shock. Including basic protection (protection against direct contact) and fault protection (protection against indirect contact) of persons and livestock. It deals also with the application and co-ordination of these requirements in relation to external influences.

This standard applies to the installation of electric floor and ceiling heating systems which are erected as either thermal storage healing systems or direct heating systems, It does not apply to the installation of well healing systems. Heating systems for use outdoors are not considered.

This section deals with baseband-to-baseband measurement for frequency division multiplex (f.d.m.) telephony. These measurement are additional to those already given in part 1, section four of this publication . Measurements in the baseband, which are coming to telephony and to television for example group-delay and amplitude/frequency characteristics.

This International standard specifies a digital time and control code for use in television, film, and accompanying audio systems operating at 30,25,and 24 frames per second. Clauses 4,5 and 6 specify the manner in which time is represented in frame- based systems, Clause 7 describes the structure of the time address and control bite of the code, and sets guidelines for storage of user data in the code. Clause 8 specifies the modulation method and interface characteristics of a linear time code (LTC) source, Clause 9 specifies modulation method for inserting the code into the vertical interval of a television signal. Clause 10 summarizes the relationship between the two forms of time and control code.