Clause 3 – How to understand the definition of “supplementary insulation”

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,…

Clause 3 – How to understand the definition of “basic insulation”

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…

Clause 3 – How to understand the definition of “type X, type Y, type Z attachment”

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…

Clause 3 – How to understand the definition of “type Z attachment”

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…

Clause 3 – How to understand the definition of “type Y attachment”

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…

Clause 3 – How to understand the definition of “type X attachment”

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…

Clause 3 – How to understand the definition of “supply cord”

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…

Clause 3 – How to understand the definition of “interconnection cord”

interconnection cord: external flexible cord between two parts of an appliance, provided as part of a complete appliance for purposes other than connection to the supply mainsNote 1 to entry: In battery-operated appliances, if the battery is placed in a separate box, the flexible lead or flexible cord connecting the box with the appliance is…

Clause 3 – How to understand the definition of “supply leads”

supply leads: set of wires intended for connecting the appliance to fixed wiring and accommodated in acompartment within or attached to the appliance There are two restrictions that need to be emphasized here. The first is that it must be contained in a compartment, which can generally be a plastic electrical box, or a recessed…