The safety symbols of waterproof power supply mainly include IP rating mark. The IP rating is composed of two numbers, the first number indicates the dustproof level, and the second number indicates the waterproof level. The highest level of waterproof level is 8, as follows:
IP67: Indicates that the device can completely prevent the intrusion of foreign objects and dust, and can withstand short-term water immersion.
In addition, the power supply safety symbols also include some common electrical symbols and marks, such as:
A: Ampere, indicating the unit of current.
Hz: Hertz, indicating the unit of frequency.
V: Volt, indicating the unit of voltage.
W: Watt, indicating the unit of power.
AC: Alternating current power.
DC: Direct current power.
PE: Ground wire, indicating safety ground wire.
L: Live wire (usually red).
N: Neutral wire (usually blue).
NO: Normally open.
NC: Normally closed.
QS: Isolating switch.
QF: Circuit breaker.
FU: Fuse.
FR: Thermal overload relay.
These symbols and logos play an important role in electrical design and safety specifications, ensuring the correct installation and use of equipment and preventing electrical accidents.
