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The need for du/dt filtering depends the motor
insulation.
HXR and motors /dt filtering with voltages over 500 V.
HXR and motors
ABB random -wound 380 690 heck otor insulation system with the otor manufacturer.
F ilter tio 0
M otor type Nominal mains
voltage N)
M otor insulation requirement
ABB and Standard insulation system.
Û Peak line line voltage otor terminals.
Symbol Explanation
U Nominal mains voltage.
W ith du/dt filtering, the insulation system must withstand LL=1600 V. the
m otor does not fulfil the following requirements, the
lifetime the motor might decrease.
Non-ABB 420 Insulation system must withstand LL=1300 V.
500 600 the insulation system withstands LL=1800 du/dt filtering not required.e.
Random -wound and
Form -wound
420 500 the insulation system withstands LL=1600 and At=0.du/dt filters
du/dt filtering suppresses inverter output voltage
spikes and rapid voltage changes that stress motor
insulation.
600 690 the motor insulation system withstands LL=2000 and At=0.
M otors 500 600 Standard insulation system conjunction with du/dt filtering reinforced insulation. interval during which line line voltage otor term inals changes from 10% of
full voltage range.2 ^s, u/dt filtering not
required.
Insulated N-end (non-driven end) bearings and or
com ode filters are also required for motor
bearing currents with motors bigger than 100 kW.
ABB form -wound 380 690 Standard insulation system. For
more information please see the ACS800 hardware
manuals. ith du/dt filtering, the insulation system must withstand LL=1300 V.
600 690 Reinforced insulation system conjunction with /dt filtering. ith du/dt filtering, the insulation system must
withstand LL=1800 V. For information the construction of
the motor insulation, consult the manufacturer.3 ^s,
d u/dt filtering not required.
42 Hardware options 3AFE68375126 17. Additionally, du/dt filtering reduces
capacitive leakage currents and high frequency
emission the otor cable well high frequency
losses and bearing currents the motor.
At Rise tim i.2.2009
