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原则上按照335的要求，如果是出美国的，就要参照UL的标准。
% {& D5 _& d& @8 T( i
% }3 q# `3 v% T+ [; v8 _7 Marking and instructions.................................................................................................
: |7 A) d1 Y2 K' M& F8 Protection against access to live parts............................................................................
0 { b6 R1 L6 h p6 r K& o! G& e9 Starting of motor-operated appliances ............................................................................$ h! M2 z2 u, z; H" t' b1 H
10 Power input and current .................................................................................................$ @, Y* B( E( m2 X
11 Heating ..........................................................................................................................7 v- E4 j2 A1 H# Y& ?* l! z
12 Void...........................................................................................................................
2 f+ _" J1 I; O* l13 Leakage current and electric strength at operating temperature......................................; Y4 f2 l, w0 l2 P x! Y
14 Transient overvoltages ................................................................................................... ~5 I0 y' e* }' t
15 Moisture resistance ........................................................................................................
7 h7 {$ D5 P3 F1 f16 Leakage current and electric strength.............................................................................: f2 V6 V1 e ^7 S( w% N
17 Overload protection of transformers and associated circuits ...........................................& H# M& U6 t1 O- y
18 Endurance......................................................................................................................) K3 |9 h7 C0 f7 K6 q. p( J
19 Abnormal operation ........................................................................................................5 k4 ^6 {) p1 b, N! j
20 Stability and mechanical hazards .................................................................................
9 z3 y% Q+ F5 p4 M6 O( y6 x21 Mechanical strength .....................................................................................................
' s( t, @. s: |/ o0 \( f2 @22 Construction .................................................................................................................
2 m J( Y1 r- d: _3 a2 z$ l' L23 Internal wiring...............................................................................................................
% c0 j; C0 A7 ^6 O4 e) P" k24 Components .................................................................................................................
" n; O8 `( ~# n2 Z3 w# j$ F25 Supply connection and external flexible cords ..............................................................
5 Q1 i' p$ s5 Z2 z26 Terminals for external conductors.................................................................................5 E } u' K7 s9 A+ O& u. h6 {2 o, e9 c
27 Provision for earthing ...................................................................................................; H8 W) w8 ^1 W7 [# F1 F% [
28 Screws and connections ...............................................................................................
5 _; h8 H! j9 n0 _8 K n29 Clearances, creepage distances and solid insulation ....................................................5 Q @3 F: {, M1 B
30 Resistance to heat and fire...........................................................................................+ n8 j1 h! ^% \" u7 |* b& g; L, ]
31 Resistance to rusting....................................................................................................
% @' O: v1 S) A$ j32 Radiation, toxicity and similar hazards.......................................................................... |
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