Standard practice for outdoor grounding wire of base stations

Why do electrical systems need to be grounded?

The basic reasons for grounding or not grounding the electrical system and the various types of system grounding, as well as the practices commonly used to ground electrical systems are discussed. Purpose: Grounding of an electrical system is a decision that must be faced by engineers charged with planning or modifying electrical distribution.

What is electrical system grounding?

Grounding of an electrical system is a decision that must be faced by engineers charged with planning or modifying electrical distribution. Grounding in some form is generally recommended, although there are certain exceptions. Several methods and criteria exist for system grounding; each has its own purpose.

What is a special case of system grounding?

Special cases of system grounding are also addressed for generators, uninterruptible power supplies (UPS), portable mining equipment, and multi-voltage systems. Grounding of an electrical system is a decision that must be faced sometime by most engineers charged with planning or modifying electrical distribution.

How do I choose a grounding system?

In choosing a grounding system, the designer must be cognizant of these differences. Due to the power requirements, the vast majority of heavy rail transit systems are third rail systems. The third rail is usually at a positive dc voltage with respect to the running rails. The running rails are used for the negative return to the substations.