LV switchgear: functions and selection

The basic functions of LV switchgear

• Electrical protection
• Isolation
• Switchgear control

The switchgear

• Elementary switching devices
• Combined switchgear elements

Choice of switchgear

• Switchgear selection
• Tabulated functional capabilities of LV switchgear

Circuit-breaker

• Standards and description of circuit-breakers
• Fundamental characteristics of a circuit-breaker
• Other characteristics of a circuit-breaker
• Selection of a circuit-breaker
• Coordination between circuit-breakers
• Discrimination MV/LV in a consumer’s substation
• Ultra-rapid circuit breaker