Power rating

As a power rating specified by the manufacturer ( " called" ) is referred to performance of a device, unit of equipment, with back of an electrical load or other energy converter (generator, hydraulic motor, heat engine ) that implement this ( record ) or generate ( emit ) can.

The rated power ( StromStG ) a plant for the production of electricity is the continuous power, for which it is appointed in accordance with delivery agreements. The continuous output of a plant is the highest power that is provided in a normal operation without any time limit and their life and safety is not compromised. Is the power rating is not clearly determined by the order documents, then for a new plant once a achievable under normal conditions in accordance with the professional standards for acceptance testing power value to be determined. In systems of combined heat and power, the rated power is the electrical power rating.

The rated power is binding for the entire life of the system. Rated power changes are permitted only with significant changes in the nominal conditions and with constructive measures on the system. The nominal capacity of a system may not be adapted to a temporary change in performance. Also, no change in the rated power level should be carried out at power reductions as a result of or in order to avoid damage, as well as due to aging, wear or contamination. Likewise, a seal on the power controller as limiting the power output has no effect on the rated power.

The operator of the plant has a reduction of the nominal power by appropriate documentation ( for example: reports, official statements) demonstrate to the main customs office.

Usually, the maximum achievable power in continuous operation is specified as a nominal power. For devices that are suitable or designed for short-time operation (eg, soldering guns, hand drills, hand blender ) is, however, often given the instantaneous or maximum performance. This must only be called via the short operating time specified on the nameplate in the form of "KB xx min" (KB - time).

Whether it is at the rated power to the absorbed or emitted power is not uniquely determined. It can, however, differ equipment and plant types, where usually the absorbed or emitted power is given as rated power, where " power " has been established in the first case for the identification of the device, the term:

• The rated power specification usually indicates the absorbed power:

• The rated power specification usually indicates the output power:

With rocket and jet turbine engines, the thrust is given instead of a service, ie: developed by this force under certain conditions. When the turbines or gasoline engines driving propellers, however, the output on the shaft mechanical power is given as nominal power.