UL 497 BULLETIN-2008 标准详情
- 标准号:UL 497 BULLETIN-2008
- 中文标题:双导线通信电路保护器的UL安全标准
- 英文标题:UL Standard for Safety Protectors for Paired Conductor Communications Circuits
- 标准类别:美国保险商实验室UL
- 发布日期:2008-06-27
The following changes in requirements are being proposed:1. Approval of the Seventh Edition of the Standard for Protectors for Paired-Conductor Communications Circuits, UL 497, as an American National Standard with No Change in Requirements
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