Electrical Power

1. Look it up on the web. Type "power factor and diversity factor" into a search engine.

2. Read a book.

3. Ask your teacher.

4. Mathematical relation to what?

"...a 70% diversity means that the device in question operates at its nominal or maximum load level 70% of the time that it is connected and turned on"

"...the power factor of an AC electrical power system is defined as the ratio of the real power flowing to the load, to the apparent power in the circuit..."

Invitation declined. Use a search engine.

tell your instructor you need them to dumb down the lessons because internet forums don't have the answers to their questions and its cutting into your PlayStation time

Duplicate thread.

http://cr4.globalspec.com/thread/86190

Reported.

(_x_)

Power factor defines the load nature namely as resistive, inductive or capacitive in order to analysis the power consumption and the rated demand. For example, IEC contactor, AC-3 duty is for inductive loads which are having lagging power factor as 0.7~0.8, AC-1 duty is more resistive, closer to 1. The power factor contributes to the fault current , losses and demand therefore, always(?) preferred to keep closer to one.

Diversity factor is mostly based on the experiment and design philosophy, for example IEC-61439 defines diversity factor depending on number of main circuits. For a electric actuator, D.F is 0.2, for 10 or more main circuits D.F is 0.6 in a section. NEMA standard also defines the diversity factor,(can anybody with details ?)!! The ration between the highest total of Amps at a time expected and total of all Amps from main circuit is D.F.

IMO,Come out from equations, get in to practical which is more interesting and fun.

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Zero Knowledge - O:)K