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Please pay particular attention to this chapter!
The device can only supply power within the power limits of the device. Many electricity
consumers, also known as loads, require higher or additional power. This means that
the rated power of the consumer, which is shown on the rating plate, does not match the
actual power. This applies in particular to factors such as reactive power and starting
current.
Reactive power
Electrical loads that have a cos
reactive power in addition to the rated power. The reactive power places an additional
load on the appliance. Additional currents flow in the immovable part of the core of
the device. Therefore, the actual total output of the appliance is used for the correct
calculation. The current consumed is decisive, not the rated power of the appliance. The
electrotechnical unit is no longer Watt=W, but Volt Ampere=VA.
High reactive power can affect the voltage regulation of the device and
destroy the device. The power factor cos(ф) of all loads must be between 0.8
and 1. Never use loads with a power factor cos(ф) of more than 0.8-1!
In general, the closer the reactive power is to the total power of the appliance, the greater
the feedback effect on the control of the appliance due to the reactive power.
This means that 1000 W reactive power has a greater effect on the control of a 5000 W
appliance than on the control of a 20,000 W appliance.
Loads with high reactive power:
• Appliances with electric motors such as water pumps, circular saws, blowers or fans.
• Old neon tubes (without additional compensation).
Starting current
Electrical loads that start up against a load or accelerate a large mass usually require a
high starting current. The starting current is often 4 to 8 times the rated current. The device
must be able to provide the power.
EN
V. 1.1
Commissioning
), also known as a power factor, not equal to 1 require
(ф
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