UL 497 PDF

UL 497 PDF

Name:
UL 497 PDF

Published Date:
01/01/2001

Status:
Active

Description:

Protectors for Paired Conductor Communication Circuits

Publisher:
Underwriters Laboratories

Document status:
Active

Format:
Electronic (PDF)

Delivery time:
10 minutes

Delivery time (for Russian version):
200 business days

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Choose Document Language:
$150.6
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These requirements cover protectors for paired-conductor communications circuits to be used in accordance with Article 800 of the National Electrical Code, NFPA 70.

As covered by these requirements, a communications circuit protector consists of single- and multiple-pair air gap arresters, gas tube arresters, or solid state arresters, with or without fuses or other voltage-limiting devices. A circuit protector is 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 induction, and rises in ground potential.
Edition : 7th
Note : This product is unavailable in Ukraine, Russia, Belarus
Number of Pages : 54
Published : 01/01/2001

History

UL 497
Published Date: 01/01/2001
Protectors for Paired Conductor Communication Circuits
$150.6
UL 497
Published Date: 01/01/1995
Protectors for Paired Conductor Communication Circuits

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