The creepage and clearance will have different considerations due to different factors such as product use conditions or environment. Creepage must be greater than or equal to clearance.Ģ.2 Important factor in determining distance.Creepage: The shortest distance between two conductors along the insulating surface.The shortest distance that can achieve insulated through the air. Clearance: In the "line of sight" distance or the shortest air path between two conductors.If the basic insulation fails, the external wires connect to the protective earthing conductor to conduct dangerous currents to the earth. In addition to basic insulation, it also includes additional protective measures.
This type of equipment does not provide protective grounding, but itself can provide protection from electric shock. The equipment has protection against electric shock, in addition to basic insulation, there is supplementary insulation or provide reinforced insulation. There is no dangerous voltage, and this energy does not cause pain or injury. Classes of equipment with respect to protection from electric shock This article will focus on the clearance and creepage distance of electronic products.ġ. To achieve electric shock protection, electronic equipments must have an effective insulation method, which can be divided into clearance and creepage distance and solid insulation materials. This article is mainly aimed at preventing electric shock damage to the human body. Safety standards have clear statements and regulations on manufactured equipment and parts to provide safe and high-quality products to end-users.
Not only considered the normal operating conditions of the equipment, but also possible failure conditions, expected failure, and environmental influences such as temperature, altitude, pollution, and humidity. Designers must understand the principles of safety requirements in order to design safe equipment.