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205
No. Symbol Approved Standards Description
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
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.
14 IEC60417
No.5017
Earth
To identify an earth (ground) terminal in
cases where neither the symbol No.13 is
explicitly required.
15 IEC60417
No.5032
Alternating current
To indicate on the rating plate that the
equipment is suitable for alternating
current only; to identify relevant
terminals.
16 IEC60417
No.5031
Direct current
To indicate on the rating plate that the
equipment is suitable for direct current
only; to identify relevant terminals.
17 IEC60417
No.5172
Class II equipment
To identify equipment meeting the safety
requirements specified for Class II
equipment according to IEC 61140.
18 ISO 3864 General prohibition
To identify actions or operations that are
prohibited.
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