Vogele Basic Training Hydraulics & Electrics

E.2.0 Units of measurement in electrics
E.2.9.1 Electrical power
Electrical power (P) is a type of power that is available when electrical work (electrical energy)
is realized over a specific period of time.
Details regarding the effective electrical power necessary to power electric machines, such as
heating rods, motors and lamps, are usually given in Watts (W).
The decisive factor is whether the type plate specifies the input power or the output power.
In the case of generators, for instance, the output power is specified, while the input power is
specified for heating rods.
The following statements can be made about electrical power:
The power P is greater
- the higher the current I
- the higher the voltage U
The symbol for electrical power is P.
Unit of measurement: W (Watt). This is also the basic SI unit (SI = International System
of Units).