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绝缘系统定义(UL1446):! {9 `! Q2 w2 U
4.5 INSULATION SYSTEM – A unique intimate combination of two or more insulating materials used in1 F0 S; x: n2 Z* X" d* b$ S# \# 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" C, {3 m! ~ c: R" U
unique groups. When multiple groups exist, either within a given insulation system or a different$ q. J8 @% Q0 D5 p9 a2 ]! f4 z5 s; y
insulation system, components of one unique group shall not be added to another unique group.
+ y/ g% B$ j, e# N5 sHowever, more than one group is able to be used within a single device when at least a 3.05 mm
+ W& S2 M' B% v- Q3 Y9 V(0.125 inch) air space is used to separate them. Any material or component existing outside the outer
. Z7 M8 f N3 p" Gwrap of the device or not in contact with the windings is not determined to be part of the insulation
% Z8 H" \8 w5 z+ U' ?4 gsystem. |
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