PD ISO/TR 16764:2003 pdf – Lifts, escalators and passenger conveyors — Comparison of worldwide standards on electromagnetic interference/ electromagnetic compatibility.
1 Scope This Technical Report consists of a comparison of electromagnetic interference/electromagnetic compatibility (EMI/EMC) worldwide standards of interest to the lift industry. 2 Electromagnetic interference/electromagnetic compatibility standards 2.1 Background With the advent of radio broadcast transmission in the 1 920s, the interference from radio noise (i.e. electromagnetic noise) became a concern of engineers in Europe and North America and many technical papers were beginning to be published dealing with electromagnetic interference (EMI). Early studies showed that motor driven appliances, switches, automobile ignitions, electric traction and electrical power lines, among other sources, caused radio interference. 2.2 CISPR/IEC In 1 933 the International Special Committee on Radio Interference (CISPR, Comité International Spécial de Perturbations Radioélectriques) was formed as a result of a joint effort of the International Electrotechnical Commission (IEC) and the International Union of Broadcasting. The first meeting of CISPR was held in 1 934 to address limits of EMI and methods of measurement. Following World War II, the United States, Canada and Australia started to participate in CISPR. Subsequently countries from Asia and other parts of the world also started participating in CISPR. The emphasis initially was on getting agreement on measurement procedures and instrumentation for the protection of radio services with particular emphasis on radio broadcasting. The subject of acceptable performance limits was left to a later date. IEC/TC 65 was formed in the early 1 960s and was also concerned with EMC requirements. In 1 974, the IEC established a new technical committee (IEC/TC 77) to cover EMC subjects not generally dealt with by the CISPR, in particular, immunity characteristics of all kinds of equipment and emission phenomena below 9 kHz, the lower end of the radio frequency spectrum. The organization of these committees in the IEC is shown in Figure 2.
2.3 National committees/standards 2.3.1 When the CISPR was organized, national regulatory agencies such as the Federal Communications Commission (FCC) in the US, the British Standards Institution (BSI) in the UK, Fernmelde Technisches Zentralamt (FTZ) in Germany, Voluntary Control Council for Interference (VCCI) in Japan and similar institutions in other countries also started promulgating interference control limits applicable in their respective countries. 2.3.2 The China Technical Committee of Standardization of Radio Interference (CTCSRI) was established in 1 981 under the leadership of the China State Bureau of Technical and Quality Supervision. One of its tasks is to study the IEC/CISPR EMC/EMI standards and develop China’s own EMC/EMI standards. There are eight subcommittees from A to G and S which concern respectively test instrument, ISM equipment, mobile, radio receiver, household appliances and electric tools, office equipment, and radio and non-radio systems. In 1 993, GB/T1 3926 was published which is equivalent to IEC 60801 . Currently, there are more than forty EMC/EMI standards published covering limits, test methods and related aspects such as site requirements and personal hazards. There is a concerted effort in China to move towards those of the IEC/CISPR. 2.3.3 In the United States commercial EMC standards activities are coordinated through the efforts of ANSI Accredited Standards Committee C63 for which the Institute of Electrical & Electronic Engineers (IEEE) is the secretariat. Several societies of the IEEE and trade organizations such as EIA, NEMA, SAE and others as well as Accredited Standards Committee C63 have developed standards pertaining to EMC. Except for cases in which commercial standards are referenced in federal (legal) documents, for example C63.4 is called out in FCC requirements, the use of these standards is wholly voluntary in the US. See Figure 3.
Emission requirements in the United States are specified by the Federal Communication Commission (FCC). The FCC administers civilian use of the frequency spectrum in the USA. Title 47 of the Code of Federal Regulations covers telecommunication and controls the intentional and incidental use of the frequency spectrum. The parts relevant to EMC are contained in Chapter 1 : Part 1 5 — Radio Frequency Devices and Part 1 8 — Industrial, Scientific and Medical Equipment. FCC Part 1 5 has extended the measurement range for digital devices or computers up to 5 GHz.