reinforced insulation: single insulation applied to live parts, that provides a degree of protection against electric shock equivalent to double insulation under the conditions specified in this standard.NOTE It is not implied that the insulation is one homogeneous piece. The insulation may comprise several layers which cannot be tested singly as supplementary insulation or basic…
double insulation: insulation system comprising both basic insulation and supplementary insulation The definition is only to simplify the description of basic insulation and supplementary insulation in the standard, using one name to descirbe two names. As shown in the figure below, the supply cord has two layers of insulation, the inner wire sheath and the…
supplementary insulation: independent insulation applied in addition to basic insulation, in order to provide protection against electric shock in the event of a failure of basic insulation An insulation that is outside the basic insulation and is independent of the basic insulation, and is usually accessible to the user. Supplementary insulation, as the name implies,…
basic insulation: insulation applied to live parts to provide basic protection against electric shock Generally speaking, a layer of insulation that is in direct contact with a live part can be a common insulating material (such as plastic materials such as PVC and ABS), or it can be air or a distance ( creepage distance) formed…
The type of connection is defined by the manufacturer of the appliance. Generally speaking, it is rare to define it as Type X, because this will bring unnecessary risks to the manufacturer. It is commonly defined as Type Y. Of course, if the power cord is cast, it is generally defined as Type Z. The…
type Z attachment: method of attachment of the supply cord such that any replacement is intended to be made by the manufacturer, its service agent or similar qualified person. The supply cord of some products is molded together with the product and cannot be removed by common tools. Or the power cord of some appliances…
type Y attachment: method of attachment of the supply cord such that any replacement is intended to be made by the manufacturer, its service agent or similar qualified person. Type Y attachment is generally used for supply cords that are difficult to replace, or when dangerous parts may be touched during replacement. Therefore, it is…
type X attachment: method of attachment of the supply cord such that it can easily be replacedNote 1 to entry: The supply cord may be specially prepared and only available from the manufacturer or its service agent. A specially prepared cord may include a part of the appliance. First, this definition is for the supply…
supply cord: flexible cord, for supply purposes, that is fixed to the appliance Generally speaking, most countries have their own mandatory safety and performance testing standards for supply cord. The supply cord here is a certified supply cord relative to the supply leads in clause 3.2.1. In most countries, the maximum current that the plug…
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