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7.4 Main contactor and key connection

- The connection of the main contactor can be carried out following the

drawing in Figure 7–1.

- An intrinsic protection is present inside the logic when the voltage on the

battery power connection overtakes the battery nominal voltage more than a

certain percentage. Thank to this protection, it is allowed that the Main

Contactor (or an emergency switch) breaks the Battery positive in every

moment regardless of the state of the key (without this protection, if the Main

Contactor breaks when a regenerative braking is in progress, the rail

capacitor voltage increases and the overvoltage could damage the Power

Mosfets).

Figure 7–1

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Zapi COMBI AC1 Manual de usuario Pagina 15