The EIS in Safety Certification is Electrical Insulation System, also named as Insulation System.
In accordance with UL 1446, the Insulation System is a unique intimate combination of two or more insulating materials, likes magnet wire, ground insulation, varnish, lead wire insulations, and outer wrapping of a coil…, used in electrical equipment.
These intimate combinations are evaluated as unique groups. Any material or component existing outside the outer wrap of the device or not in contact with the windings is not determined to be part of the insulation system.
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