Time：2023-04-03 17:50:59 Popularity：685
Marking
Labeling is an important part of indicating proper installation, application, and maintenance for everyone, and is a crucial testing standard content to ensure personal safety and financial safety. Plug and socket products should be prominently marked with rated voltage, rated current, and switching power supply characteristics. In addition, converters (which refer to portable electrical accessories consisting of only one plug and one or more socket parts) should be marked with "MAX (or larger)" to indicate the rated voltage/or output power, in order to guide customers in preventing overload applications. The markings or symbols should be sturdy, durable, and clearly distinguishable. Do not apply silk screen ink or stone stickers that can be easily wiped off.
Rated value
The rated value is the main parameter for ensuring the normal, safe, and coordinated application of electrical equipment exchange between plugs, sockets, converters, and connected electrical equipment. For example, the rated voltage of the converter cannot exceed the rated value of a part of the plug. Otherwise, it will cause customers to choose electrical equipment based on the rated voltage of the socket, and the excessive current of the plug will become hot, causing risks; The rated value of the converter with circuit breaker and overload protection device should be equivalent to the rated value indicated on the circuit breaker and overload protection device. Otherwise, there will be product damage.
Specifications
Specification is a key technical standard related to the safety application of plugs, sockets, and converters, and whether it considers universal interchangeability regulations to prevent accidental insertion. Improper specifications can harm customer applications or cause safety hazards such as poor contact or incorrect insertion. It can cause damage to machinery and equipment, or even fire and safety accidents.
Prevention of electric shock maintenance
Prevention of electric shock maintenance is an important safety indicator value to ensure that plugs, sockets, and converters are not prone to safety accidents for customers and others under all normal application conditions, and even in some unexpected situations. When the plug is connected to all or part of the ground socket, the induction power position of the plug should not be accessible; When any plug of the plug is in a touchable condition with other plugs, it should not be able to connect with the live plug sleeve of the socket. Plug sockets and converters with maintenance doors should be able to avoid single pole or probe insertion.
structure
The plug-in components of the socket should have sufficient ductility to ensure sufficient contact pressure with the plug. The plug sleeve should be corrosion-resistant and wear-resistant to ensure excellent contact between the plug and the socket; The plug of the plug should be locked and cannot rotate, otherwise it will endanger the insertion characteristics and cause unsafe factors; The converter has a copper wire positioning device to ensure that the copper wire is fixed and can withstand all normal tensile and torque resistance; When inserting and closing plugs and sockets, the middle of the surface layer should be firmly grounded to avoid causing safety accidents.
The power plug
The power plug should have sufficient cross-sectional area to ensure that it is not prone to overheating and damage the insulation layer, resulting in short circuit faults, fire, and power loss, leading to safety accidents. For example, the cross-sectional area of the power plug for a typical 250V, 10A converter should be greater than or equal to 0.75mm2.
impact toughness
The plug and socket shall have sufficient impact toughness to withstand various mechanical equipment crustal stress caused by falling, impact, extrusion, etc. during the whole process of installation and application; Sockets with maintenance doors should be able to avoid single pole insertion.
