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按照UL1598,可以做17.2.4的测试:6 {9 X' u# U' d6 N- B) x+ o! }3 j. @. d
17.2.4 The test of impedance shall be performed by passing a 30 A current from a part to be grounded) l3 c9 d0 W$ k* h# y7 A
to the grounding terminal means for a period of 2 min and measuring the potential drop between them at
" W) J; B( r* [3 mthe end of the period.
4 B% J( X/ P% m! Z4 B1 a8 r17.2.5 When tested in accordance with Clause 17.2.4:
+ L# x, d3 v* K4 M(a) the resulting voltage drop shall not exceed 4.0 V; and; h% m% g" X( N. S+ v T$ t7 z$ ]
(b) there shall be no melting of any conductor or metal in the bonding circuit
9 Y+ p8 K( \$ W, }9 Y8 q, K) Z, e(c) there shall be no heating or burning that is likely to create a fire hazard. |
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