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Safety information
2.3 Reactive power compensation
2.3
Reactive power compensation
Capacitors for improving the power factor (reactive power compensation)
Capacitors must not be connected to the output terminals of the 3RW55 soft starter. If
capacitors are connected to the output terminals, the 3RW55 soft starter will be damaged.
Active filters, e.g. for reactive power compensation, must not be operated parallel to the
motor control device.
If capacitors are to be used to correct the power factor (actively or passively), they must be
connected on the line side of the device. They must not actively control the power factor
during the starting and coasting down phases. If a contactor disconnector or main contactor
are used together with the electronic 3RW55 soft starter, the capacitors must be
disconnected from the 3RW55 soft starter when the contactor is open.
36
SIRIUS 3RW55 soft starter
Manual, 08/2018, A5E35630887002A/RS-AB/002
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