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 90 z 112

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Only then shall the procedure for re-energizing commenced. Repair work Repair work may consist the following stages: - fault location, - fault rectification, - verification the repaired part the installation. Permission start work shall given (after checking all above-mentioned measures) the person responsible for control work activity. Different procedures may need applied each stage the work. Protection against adjacent live parts If there are parts electrical installation the vicinity the work location that cannot be made dead, then special additional precautions are necessary and shall applied before work starts. Appropriate tests and adjustment shall performed ensure that the required parts the installation are suitable for re-energization. Specific working conditions shall defined allow fault location and confining defects under the presence voltage.3. All tools, equipment and devices used during the work shall removed. replacement of fuses light bulbs) undertaken without full working procedures having applied. Maintenance may consist preventive maintenance" which carried out routine basis with the intention preventing breakdown and keeping equipment good condition, or "corrective maintenance" which carried out repair replace defective part. There are two types maintenance work: - work where the risk electric shock arcs present and therefore the appropriate working procedures have applied, - work where the design equipment enables certain maintenance e. Re-energizing after work After the work has been completed, inspected and tested, persons longer required shall be withdrawn. Maintenance procedures General The purpose maintenance keep the electrical installation the required condition.g. 10. . Elimination defects shall normally carried out accordance with the rules dead working.OPERATION ELECTRICAL INSTALLATIONS 91 - provide protection against adjacent live parts, shall undertaken the specified order