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板凳
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发表于 2015-11-10 17:51
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zlj1215 发表于 2015-11-10 10:40
, G. T3 Y, [3 Z3 _. _$ t8 |这个产品应该是只有一种输出电压吧?如果只有一种输出电压,那就是Single-voltage。某些产品既有5V电压,也 ...
3 {$ N3 j! g* V( y8 m但在DOE指令里,multiple-voltage 说明到多个同时输出,但只有一个电压的,就作为一个multiple-voltage或者Class A。下文为指令对multiple-voltage的说明。
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o$ O3 \" s5 J+ P0 f+ H/ y+ PC. MULTIPLE-VOLTAGE. c5 ~ r3 s0 H+ z6 y+ g7 B
A multiple-voltage EPS is defined as “an external power supply that is designed to convert line voltage AC input into more than one simultaneous lower-voltage output.” See 10 CFR Part 430 Subpart B Appendix Z. Direct operation EPSs that meet this definition are considered multiple-voltage EPSs and will be evaluated using the multiple-voltage EPS test procedure. These products must comply with the new standards being adopted today for multiple-voltage EPSs. An EPS cannot be in more than one product class, so such an EPS need not also comply with the standards being adopted today for product classes B, C, D, E, or H.; W( I) U- f7 d4 o6 d9 M
In response to the NOPR regarding multiple-voltage EPSs, Cobra Electronics commented that an EPS with multiple simultaneous outputs but only one output voltage would be considered both a multiple-voltage EPS and a Class A EPS and, thus, in its view, would have to be tested according to DOE's multiple-voltage and single-voltage EPS test procedures. (Cobra Electronics, No. 130 at p. 3)
+ E- l7 y# _( z- J7 CCobra correctly deduced that an EPS with multiple simultaneous outputs, but only one output voltage could be treated either as a multiple-voltage EPS or a Class A EPS. The term “class A external power supply” means a device that, among other things, is able to convert to only one AC or DC output voltage at a time. See 42 U.S.C. 6291(36)(C)(i). As such, an EPS of this type must meet the current standards for Class A EPSs prescribed by Congress in EISA 2007. DOE notes, however, that the new standards being adopted today for multiple-voltage EPSs are more stringent than the current Class A standards. Therefore, any EPS that is tested and shown to comply with the new multiple-voltage EPS standards will be presumed to also comply with the Class A EPS standards prescribed by Congress in EISA 2007. |
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