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Safety Symbols
General de nitions of safety symbols used on equipment or in manuals.
Instruction manual symbol: the product is marked with this symbol when it is
necessary for the user to refer to the instruction manual in order to protect
against damage to the instrument.
Indicates dangerous voltage (terminals fed from the interior by voltage
exceeding 1000 volts must be so marked).
Protective conductor terminal. For protection against electrical shock in case
of a fault. Used with wiring terminals to indicate the terminal which must be
connected to ground before operating equipment.
Low-noise or noiseless, clean ground (earth) terminal. Used for a signal
common, as well as providing protection against electrical shock in case of
fault. A terminal marked with this symbol must be connected to ground in the
manner described in the installation (Operation) manual, and before operating
the equipment.
Frame or chassis terminal. A connection to the frame (chassis) of the
equipment which normally includes all exposed metal structures.
Alternating current (power line).
Direct current (power line).
Alternating or direct current (power line).
Warning
or the like, which, if not correctly performed or adhered to, could result in
injury or death to personnel.
Caution
condition or the like, which, if not correctly performed or adhered to, could
result damage to or destruction of part or all of the product.
Note
condition or the like, which is essential to highlight.
denotes a hazard. It calls attention to a procedure, practice, condition
sign denotes a hazard. It calls attention to a procedure, practice,
denotes important information. It calls attention to a procedure, practice,
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