24VAC 输入可以申请UL506吗?
请教: 24VAC 输入可以申请UL506吗? 此为线性变压器.谢谢! 可以的.
另外, 请注意现在新标准 UL5085-1 & UL 5085-2 相当于 UL506, 请看 scope 如下:
1 Scope
1.1 These requirements cover the following types of transformers:
a) Air-cooled transformers and reactors for general use;
b) General purpose autotransformers;
c) Ferroresonant transformers;
d) Class 2 and Class 3 transformers (which are evaluated in accordance with Part 3);
e) Cord-connected transformers (which are evaluated in accordance with Part 2);
f) Transformers incorporating overcurrent or over-temperature protective devices, transient
voltage surge protectors, or capacitors; and
g) Permanently-connected transformers.
1.2 These transformers are intended to be used in accordance with the National Electrical Code,
ANSI/NFPA 70, or CSA C22.1, the Canadian Electrical Code, Part I. The Canadian Electrical Code
defines low voltage as any voltage from 31 to 750 V inclusive and high voltage as any voltage above 750V. The National Electrical Code, ANSI/NFPA 70, defines low voltage as any voltage up to 600 V, nominal. Therefore, low voltage transformers intended for use in Canada may be rated above 600 V up to 750 V. Low voltage transformers intended for use in the United States are rated up to 600 V. Where information in clauses and tables in this standard reference voltage ranges, the limit of 600 V applies in the United States, while the limit of 750 V applies in Canada.
按照标准理解是可以的, 但还是请跟 UL 工程师证实一下. 谢谢. 高手兄 very helpful 学习
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