UL 497 BULLETIN-2007 标准详情
- 标准号:UL 497 BULLETIN-2007
- 中文标题:UL安全标准.双导线通信电路用保护器
- 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:2007
Covers protectors for paired-conductor communications circuits intended to protect equipment, wiring, and personnel against the effects of excessive potentials and currents in telephone lines caused by lightning, contacts with power conductors, power
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