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 93 z 112

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Nominated person control work activity that person who has been nominated to be the person with direct management responsibility for the work activity.g. earthing, short circuiting) have been taken Ready for operation status given when : a) the power supplies for switchgear signalling and control circuits the test equipment are switched on b) the green signal lights are on c) all the power supplies for the test voltage are switched off and secured against unintentional switching d) the safety precautions specified („Out operation“ status) are force Ready switch status given when: a) all power supplies for the test voltage are switched off b) all entries the test area are closed c) the red signal lights are switched on d) the safety precautions specified („Out operation“ status) are longer force In operation status given when: a) all entries the test area are closed b) the red signal lights are switched on c) one more power supplies for the test voltage are switched on . Risk combination the probability and the degree the possible injury damage to health person exposed hazard hazards.2. Operational status Out operation status given when: a) all power supplies, signalling and control circuits are switched off and secured against unauthorized switching on b) all safety precautions necessary before entering the test area (for voltages exceeding kV, e. They are not an alternative required signal lights. Indicator lights serve indicate the switching status the control panels.ERECTION AND OPERATION ELECTRICAL TEST EQUIPMENT 94 Test area denotes the area around the test assembly which separated from the surrounding area. Signal lights are lights which are clearly visible from outside the boundaries the test area giving red green signals indicate the operational status inside the test area. Electrical hazard source possible injury damage health presence electrical energy from electrical installation. Parts this responsibility may delegated others required. 11