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Symbol Approved Standards Description
IEC60417
No.5926
Polarity of DC power connector
To identify the positive and negative
connections (the polarity) on a piece of
equipment to which a DC power supply may
be connected.
— Polarity of DC power connector
To identify the positive and negative
connections (the polarity) on a piece of
equipment to which a DC. power supply may
be connected.
IEC60417
No.5001B
Battery, general
On battery powered equipment. To identify a
device for instance a cover for the battery
compartment, or the connector terminals.
IEC60417
No.5002
Positioning of cell
To identify the battery holder itself and to
identify the positioning of the cell(s) inside the
battery holder.
— Positioning of cell
To identify the battery holder itself and to
identify the positioning of the cell(s) inside the
battery holder.
IEC60417
No.5019
Protective earth
To identify any terminal which is intended for
connection to an external conductor for
protection against electric shock in case of a
fault, or the terminal of a protective earth
electrode.
IEC60417
No.5017
Earth
To identify an earth (ground) terminal in
cases where neither the symbol No.13 is
explicitly required.