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Systems of Insulating Materials - General
4 M) p) i' \6 \: J# V) D" YUL 14467 T8 W; W6 n. `$ u
% @) J1 l, U7 k. @% q1 Scope
$ }9 a( |% h; k- y& X1.1 These requirements cover test procedures to be used in the evaluation of Class 120(E) or higher electrical insulation systems intended for connection to the low voltage side of the distribution network where the voltage is limited to 1000 V or less and where the thermal factor and not transient overvoltages or partial discharge is the dominating aging factor. These requirements also cover the investigation of the substitution of minor components of insulation in a previously evaluated insulation system and also the test procedures to be used in the evaluation of magnet wire coatings, magnet wires, and varnishes. - l- Q% ~; G( V4 l
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1.1 revised January 30, 2008: ~# F0 T! J. U8 k+ Z
1.2 These requirements do not cover a single insulating material or a simple combination of materials, such as a laminate or a varnished cloth, printed circuit boards, or planar transformers.
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7 S2 m/ Z6 V0 x- k( ?: X8 P3 `5 r1.3 These requirements do not cover insulation systems exposed to radiation or operating in oils, refrigerants, soaps, or other media that potentially degrade insulating materials.
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7 j! b; N+ H, O; L5 @- x* w8 |1.4 These requirements shall be modified or supplemented as determined by the applicable requirements in the end-product standard covering the device, appliance, or equipment in which the insulation system is used.
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Table of Contents for UL 1446 0 z4 p! L+ A8 `" G
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: {5 s1 T* l) v7 \8 vCover
9 C7 W7 p) x- V( U3 FTransmittal 7 w, u9 H' A2 Z% A8 F7 g. f
Table of Contents : y& `. A3 A8 Q" E9 K8 q7 p
Body
0 |7 |5 O9 ~% }" u7 A9 i1 fINTRODUCTION
" h; T4 @" {! m1 Scope
5 T) @0 z2 f0 N# Q( y/ r2 Reference Publications ( g+ ?9 h% \! E9 N" M6 c
3 Units of Measurement ( ~+ ^7 s9 b, j4 ~6 x
4 Glossary 9 _- Y) r& x$ `" k7 o$ ^* G
PERFORMANCE CRITERIA
+ X1 @7 t( r2 N$ s: G5 Magnet Wire % ~) m7 Q% D" ]: n; J0 a% S
5.1 Magnet wire coatings " I T) {* q1 o _+ F" M f
5.2 Magnet wire evaluation
6 A( S" x: O" l6 |& x% A2 A6 Varnishes * ?# @2 T; X9 ^/ F P8 @% Y# s4 B
7 Insulation Systems 5 N/ n+ N7 B# Q% e0 L4 `1 ]
7.1 General 1 i: j2 N+ Y2 e/ U9 y% w
7.2 System components
S1 k" j9 p. e5 ?/ ~0 P* Y8 A8 Substitutions or Modification to an Insulation System
% V8 N! s7 w2 ?! f8.1 General 1 V* b! a# q" {7 H3 E- L2 X
8.2 Minor components
' ]) s6 T8 O( }) ~8.3 Magnet wire
" @3 c) R% S) h* F6 Y8.4 Varnish 6 m% c2 z' P7 N& U9 ^
8.5 Encapsulants, ground, and interwinding insulation
% b; F, N! [+ V& t7 F+ APERFORMANCE TESTS
. O* C9 [$ o* D9 i2 {. ~4 U! _9 Magnet Wire Coatings/Magnet Wires ' r; E5 W, v+ I& T7 J" U# [
10 Varnishes - Thermal Aging
, X1 g$ R3 t7 D# z3 u2 Z" r7 }11 Insulation Systems -
3 q; U6 @, t8 B, |11.1 General
% }8 K% u) |% B" P11.2 Samples
: o! I9 x2 {2 z( ]11.3 Exposures ' |# B# C/ O3 W- e. e
11.4 Diagnostic tests - determination of end of test-life
) X& [0 o" z- T" N; I4 l11.5 Analysis and evaluation + m4 z5 {! P3 U4 v6 @! M
12 Insulation Systems -
9 e" Q$ c( R8 {0 Y9 U7 u, y5 B12.1 General
3 o2 a8 ~7 m' A# q! O( n12.2 Samples, exposures, and tests
/ k; f! {5 ^9 h! {8 g, A12.3 Analysis and evaluation
7 f$ h' @, S% e* R) b) o; C- i0 b. F; ]13 Insulation Systems - % a3 k2 J5 ^4 d8 }# M) N8 N0 c
13.1 General , W+ @6 O3 o$ J; w) b
13.2 Samples, exposures, and tests f! X1 ~* Y% I2 R) L
13.3 Analysis and evaluation
1 w% F* i4 H1 {14 Sealed Tube Testing
; a; C a5 L+ T14.1 General
7 o y; C; |& B/ Z) W5 C# F, b14.2 Samples
4 B7 S, d5 ~8 p' d6 H- `14.3 Conditioning ( D, _/ a% Z! T$ K
14.4 Interpretation of results of non-bondable wire 5 T: q1 |) E* |4 m$ G X. V3 O
14.5 Interpretation of results for bondable wire
i! F( ]: X3 A3 t# V0 \15 Infrared Analysis Tests 2 j+ a' W) y3 ?4 c0 y
MARKING # G. B7 O7 C5 l# o8 n+ M1 ^9 z' f9 z
16 Details ! H$ B/ q$ d3 T" i8 Y, c: c& ~
Appendix A - Information for Magnet Wire Substitution 3 [# k$ z# \4 t
Superseded List |
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