This document specifies measures applicable to the class B2 voltage DC bus of a supply system which is intended to power detachable electrical CS(s).

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electrical specification of the high power interface

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operating modes (e. g. initialization, normal operation, energy feedback, connect/disconnect procedures and disconnect in case of malfunction)

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Communication parameters (basic framework: signals, ranges, units, states of supply system and CS)

The document contains simplified electrical diagrams showing specific aspects of the required functionality.