Introduction to Electrical Engineering

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Pro: ČEKO IMPORT a.s.
Vydal: České vysoké učení technické Praha Autor: Vladimír Kůla, Michal Kříž

Strana 9 z 112

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2. 50/1978 (qualification persons) deals with the qualification persons working electrical equipment. These requirements are valid preferably for electrical equipment of machines. There are three basic qualifications of persons relation the work electrical equipment and installation. 1. The qualification persons intended for the work and operation on electrical equipment follows the rule: "the more difficult, complicated, and dangerous the work is, the higher qualification shall the competent person fulfill". That means according electrical equipment that all elements electrical installation shall used according regulations for electrical installations (wiring regulations). This order gives some principles for certification and conformity declarations. When constructed operated inappropriate way, electrical equipment may cause danger for persons, livestock, well for property. These are: ordinary person person who neither skilled person nor instructed person person without electrical qualification, . Government order No.) shall people with definite qualification order not endanger themselves other people with their activities. That the reason why among standards harmonized this order are basic standards for electrical equipment and installations., well people operating complicated electrical equipment (electrical station, substation, etc. give the industry and users convenient tool cope with this order system of European standards was developed. The reason for publishing this notice was evident. its annex long list essential health and safety requirements to which all machines are deemed comply. There exist system European standards for electrical equipment machines inside the whole system standards for machinery. Government order No. These are requirements for safety connected with reliable operation of control systems actuators.VALID TECHNICAL RULES 10 covers nearly all kinds electrical apparatus. The order itself does not specify emission limits and immunity levels but transfers this task relevant standards. Therefore persons immediately constructing, producing repairing the electrical equipment, installation, etc. Requirements concerning electrical equipment of machines are among them. Because little complicated situation in the field assessment products according relevant standards, cost testing equipment, it advisable cooperate with the relevant authorities. 178/1997 products used building construction industry (civil engineering) gives space for authorities the process assessment products. Notice No. There exists important clause, which assumes that all products used the sphere civil engineering and building’s construction shall used sensible manner. 170/1997 machinery gives requirements concerning assessment and declaration conformity, which necessary to maintain for every machine