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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。0 M& Q- H N$ r
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7 Marking and instructions.................................................................................................& m8 Z8 Y+ K' g( C1 E$ }
8 Protection against access to live parts............................................................................
9 E0 `1 ~; `, c* O9 Starting of motor-operated appliances ............................................................................) m9 Q% O5 v% t2 E
10 Power input and current .................................................................................................1 W+ I/ r0 K: k3 @! g8 b, S/ _
11 Heating ..........................................................................................................................
9 L+ n$ l) m% p% H2 q# _: }- m1 M12 Void...........................................................................................................................
- j# D0 g& J3 \3 e13 Leakage current and electric strength at operating temperature......................................
2 I3 ]. R6 e' X8 T2 }8 Z1 H" F14 Transient overvoltages ...................................................................................................
" {5 J; c L8 U1 a+ x% n3 e15 Moisture resistance ........................................................................................................
0 A2 \$ g$ C% |, ^. {4 j16 Leakage current and electric strength.............................................................................
( M/ d; W+ Q% _3 W17 Overload protection of transformers and associated circuits ...........................................
. p. Q; L+ j( l9 T5 }# `18 Endurance......................................................................................................................$ X6 N u/ @# U4 u
19 Abnormal operation ........................................................................................................" Z& ^+ J, p. A; d! o
20 Stability and mechanical hazards .................................................................................
, R; R2 P- R$ K2 {4 w7 _7 `21 Mechanical strength .....................................................................................................
/ e A; I: m3 \) x, B7 g) @2 m9 P- b7 k22 Construction ................................................................................................................., @* Z& m! g H& Q% x: v4 i7 ]
23 Internal wiring...............................................................................................................
+ h5 s: y# M2 B( I" w24 Components .................................................................................................................
* l7 I" s0 ]' P" _5 J) q25 Supply connection and external flexible cords ..............................................................
. J: ~, ^6 {. k' Z; p; H26 Terminals for external conductors.................................................................................
8 A2 x" s% Y* _, m$ ]1 n X27 Provision for earthing ...................................................................................................: _8 W$ }& D7 z8 b+ e
28 Screws and connections ...............................................................................................
7 I2 }; B1 J& P; f+ Y* C7 |+ n( H0 s6 J29 Clearances, creepage distances and solid insulation ....................................................8 v' E: F' `) Z& Z" g2 \
30 Resistance to heat and fire...........................................................................................
8 [ D a0 z, o% ?& D31 Resistance to rusting....................................................................................................
8 `6 N4 u/ X; n7 l, M' W32 Radiation, toxicity and similar hazards.......................................................................... |
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