How to protect communications lines from high substation voltages

Article Abstract:

Protecting wire-line communications circuits from ground potential rise takes the form of isolating the line from the source of extraneous current. This is effected either through an insulating device or a neutralizing transformer which increases the effective grounding surface. One of the latest innovation in grounding is the use of the grounding cement, which increases grounding by a factor of 200.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

PGE's resource center guides customers to the right light

Article Abstract:

Portland General Electric Co.'s Energy Resource Center, a lighting laboratory, boasts a staff committed to researching state-of-the-art illumination technology. The utility supplies mechanical systems such as variable speed motors in an effort to improve energy efficiency.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

Don't let customers make a mystery of stray voltages

Article Abstract:

Stray voltages can cause behavioral changes among farm animals. Electric utilities must thoroughly inspect all farm electrical systems before effecting a solution. Equipotential planes provide a long-term effective means for eliminating stray voltages.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code: