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看下标准《ul446Systems of Insulating Materials– General》应该有帮助，其中INSULATION SYSTEM定义为：4 X! L U1 ]; o5 F. Y9 A
“A unique intimate combination of two or more insulating materials used in
% O8 e7 N0 o$ Aelectrical equipment. One example of this is the combination of magnet wire, ground insulation, varnish,
1 F9 y1 ?! ?7 Wlead wire insulations, and outer wrapping of a coil. These intimate combinations are evaluated as& {; ]- s7 d5 {6 |5 B" R
unique groups. When multiple groups exist, either within a given insulation system or a different
5 s$ ^; C0 N) X, Uinsulation system, components of one unique group shall not be added to another unique group.- `- C3 M! X+ D" \4 R
However, more than one group is able to be used within a single device when at least a 3.05 mm- M; X7 C% z, s' S& |6 f: l9 h
(0.125 inch) air space is used to separate them. Any material or component existing outside the outer
0 B2 P' K* T& bwrap of the device or not in contact with the windings is not determined to be part of the insulation
8 L9 V( l W3 ]4 G, n5 Y' B7 n9 {system.” |
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发表于 2010-10-26 07:44
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