|
绝缘系统定义(UL1446):: @1 n1 `3 }0 p( P. a9 ^; D8 r! ^
4.5 INSULATION SYSTEM – A unique intimate combination of two or more insulating materials used in
7 s( S' V4 s# @8 n% a1 Y! n! _* ]& z. helectrical 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: U/ C8 i8 Z3 h0 y, H6 L* V* U* j
unique groups. When multiple groups exist, either within a given insulation system or a different
% j3 y$ W, `" t) i4 uinsulation system, components of one unique group shall not be added to another unique group.
8 g, b. Z9 P; z* y5 m ^$ ^4 s0 ^However, more than one group is able to be used within a single device when at least a 3.05 mm
$ S) u, V$ e; g, J(0.125 inch) air space is used to separate them. Any material or component existing outside the outer8 ]1 m! n, d7 i6 s2 c8 U
wrap of the device or not in contact with the windings is not determined to be part of the insulation
) `% p& a7 r# I: _" f/ asystem. |
|