BS EN ISO 13297:2021+A11:2023 ISO 13297:2020+A1:2022


— IEC Electropedia: available at http://www.electropedia.org/


3.1 craft’s ground/earth protective grounding


connection, provided for safety purposes, that is established by a conducting connection with the common ground/earth (potential of the earth's surface)


3.2 equipotential bonding conductor


normally non-current-carrying conductor used to put various exposed conductive parts (3.15) of direct current electrical devices and extraneous conductive parts (3.33) at a substantially equal potential


3.3 engine negative terminal


terminal on the engine, starter or solenoid to which the negative battery cable is connected


3.4 main grounding earthing point


main point that provides connection for the DC negative conductor, AC protective grounding conductor (3.10) and bonding conductor to the craft's ground that is established by a conducting connection (intended or accidental) with the common ground (potential of the earth's surface)


Note 1 to entry: It can include any conductive part of the wetted surface of the hull in permanent contact with the water, depending on the overall system design.


3.5 overcurrent protection device


device designed to interrupt the circuit when the current flow exceeds a predetermined value for a predetermined time


EXAMPLE A fuse (3.29) or circuit breaker.


3.6 residual current device RCD


electro-mechanical switching device or association of devices designed to make, carry and break currents under normal service conditions and to cause the opening of contacts when the residual current attains a given value under specified conditions


Note 1 to entry: RCDs serve to reduce the risk of injury to people from electrical shock hazard, and damage to equipment from leakage of stray currents to earth or to other circuits.


3.7 polarization transformer


transformer that automatically orientates the neutral and active (phase) conductors (3.12) in the system in the same polarity orientation as the polarized system (3.17) of the craft


3.8 isolation transformer


transformer installed in the shore power supply circuit on a craft to electrically isolate all the normally live conductors (3.11) and the protective conductor (3.10) on the craft from the AC system conductors of the shore power supply


3.9 neutral conductor


conductor intentionally maintained at ground potential and capable of contributing to the transmission of electrical energy


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© ISO 2022 – All rights reserved


Distributed by the RYA under licence number 2020ET001 © BSI


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