the armature – the commutator – brushes and springs – field poles – field coils – Power Distribution Systems Distribution Explains the basic purposes of switches, circuit breakers and fuses Describes briefly the principle of the various of closing mechanism of circuit breakers Lists the ways in which a circuit breaker can be tripped Explains the purpose of interlocks fitted to circuit breakers Lists the essential services which are supplied by electrical power Explains the purpose of an emergency power supply States the possible sources of emergency supply and how they are brought into use Draws a system diagram of a typical distribution system, showing: Operate electrical, electronic main generators – and control systems (Cont) emergency generators – electrical engineering supply – (Cont) battery charging – 440 volt supply – 220 volt supply – circuit breakers – transformers –
Operate electrical, electronic and control systems (Cont) electrical engineering (Cont) – the armature – the commutator – brushes and springs – field poles – field coils Power Distribution Systems Distribution Explains the basic purposes of switches, circuit breakers and fuses Describes briefly the principle of the various of closing mechanism of circuit breakers Lists the ways in which a circuit breaker can be tripped Explains the purpose of interlocks fitted to circuit breakers Lists the essential services which are supplied by electrical power Explains the purpose of an emergency power supply States the possible sources of emergency supply and how they are brought into use Draws a system diagram of a typical distribution system, showing: – main generators – emergency generators – supply – battery charging – 440 volt supply – 220 volt supply – circuit breakers – transformers