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绝缘系统定义(UL1446):# y$ w1 x A3 X9 ?9 l
4.5 INSULATION SYSTEM – A unique intimate combination of two or more insulating materials used in- F" m$ a. @8 n; T% `' U- `
electrical equipment. One example of this is the combination of magnet wire, ground insulation, varnish, lead wire insulations, and outer wrapping of a coil. These intimate combinations are evaluated as
6 _) c! R* [ }" ^unique groups. When multiple groups exist, either within a given insulation system or a different
0 ]: V! W' s* Finsulation system, components of one unique group shall not be added to another unique group.
t4 G3 Z# i$ o6 v; f, q- dHowever, more than one group is able to be used within a single device when at least a 3.05 mm, B' U9 f$ b" t" ]4 X, r
(0.125 inch) air space is used to separate them. Any material or component existing outside the outer
' K1 | E1 k$ u0 ~wrap of the device or not in contact with the windings is not determined to be part of the insulation0 ? |/ ]' ^/ R0 O4 R2 _
system. |
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