The principal application of time delay over current relays (TDOC) is on a radial system where they provide both phase…

The most commonly used protective device in a distribution circuit is the fuse. Fuse characteristics vary considerably from one manufacturer…

The main protection system for a given zone of protection is called the primary protection system. It operates in the…

It is, of course, desirable to remove a fault from the power system as quickly as possible. However, the relay…

Any number of conditions has been the reason for an electrical transformer failure. Statistics show that winding failures most frequently…

COSTS AND BENEFITS OF SAFETY PROGRAMS Organizational focus on employee safety can provide for higher morale and productivity in the…

In any occupation, a level of risk can always be expected while on the job. Some occupations are obviously more…

When we hear the term solar energy,” we usually think of heat from the sun’s rays which can be put…

Demands for power vary greatly during the day and night. These demands vary considerably from season to season, as well.…

A serious issue that must be addressed is how and where to use the electric power generated by extracting energy…