No. Symbol Approved Standards Description
8 IEC60417 Polarity of DC power connector
No.5926 To identify the positive and negative
connections (the polarity) on a piece of
equipment to which a DC power supply
may be connected.
9 — 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.
10 IEC60417 Battery, general
No.5001B On battery powered equipment. To
identify a device for instance a cover for
the battery compartment, or the
connector terminals.
11 IEC60417 Positioning of cell
No.5002 To identify the battery holder itself and to
identify the positioning of the cell(s)
inside the battery holder.
12 — Positioning of cell
To identify the battery holder itself and to
identify the positioning of the cell(s)
inside the battery holder.
13 IEC60417 Protective earth
No.5019 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.
14 IEC60417 Earth
No.5017 To identify an earth (ground) terminal in
cases where neither the symbol No.13 is
explicitly required.
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