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 89 z 112

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Inspection The purpose inspection verify that electrical installation accordance with specified technical and safety regulations the relevant standards and may include verification of the normal state that installation. New electrical installations well modifications and extensions existing installations should inspected prior their being brought into operation. 10. Testing may include measurement activities. Testing includes also activities prove the effectiveness e. Testing Testing includes all activities designed check the operation the electrical, mechanical, thermal condition electrical installation. The most work activities are being provided dead working. Only skilled instructed persons shall carry out disconnecting reconnecting before or after dead working. Measurement Measurement defined activities measure physical data. Operating activities may carried out locally remote control. The following five essential requirements: - disconnect completely, - secure against re-connection, - verify that the installation dead, - provide earthing and short-circuiting, . Electrical installations shall inspected suitable intervals.OPERATION ELECTRICAL INSTALLATIONS 90 - operations intended modify electrical installation, use equipment, connect, disconnect, start stop equipment designed used for this purpose without risks so far reasonably practical. Defects, which constitute immediate danger, shall rectified without delay. Measurement may be required check the correct functioning equipment ensure that safety precautions are adequate.g. protective devices and safety circuits. - disconnecting reconnecting installations for working.2. Working procedures General According the basic principles, the nominated person control the electrical installation and the nominated person control the work activity shall both ensure that specific and detailed instructions are given the personnel carrying out the work before starting the work