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du/dt filters
du/dt filtering suppresses inverter output voltage
spikes and rapid voltage changes that stress motor
insulation.
42 Hardware options 3AFE68375126 17.2 ^s, u/dt filtering not
required.
Non-ABB 420 Insulation system must withstand LL=1300 V.
600 690 the motor insulation system withstands LL=2000 and At=0.2009
.
Û Peak line line voltage otor terminals.
W ith du/dt filtering, the insulation system must withstand LL=1600 V. For
more information please see the ACS800 hardware
manuals.
Symbol Explanation
U Nominal mains voltage.e.
HXR and motors /dt filtering with voltages over 500 V. the
m otor does not fulfil the following requirements, the
lifetime the motor might decrease. Additionally, du/dt filtering reduces
capacitive leakage currents and high frequency
emission the otor cable well high frequency
losses and bearing currents the motor.
ABB form -wound 380 690 Standard insulation system. ith du/dt filtering, the insulation system must withstand LL=1300 V.
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. interval during which line line voltage otor term inals changes from 10% of
full voltage range. ith du/dt filtering, the insulation system must
withstand LL=1800 V.2.
The need for du/dt filtering depends the motor
insulation.
At Rise tim i.
Random -wound and
Form -wound
420 500 the insulation system withstands LL=1600 and At=0. For information the construction of
the motor insulation, consult the manufacturer.
HXR and motors
ABB random -wound 380 690 heck otor insulation system with the otor manufacturer.3 ^s,
d u/dt filtering not required.
600 690 Reinforced insulation system conjunction with /dt filtering.
500 600 the insulation system withstands LL=1800 du/dt filtering not required.
M otors 500 600 Standard insulation system conjunction with du/dt filtering reinforced insulation.
F ilter tio 0
M otor type Nominal mains
voltage N)
M otor insulation requirement
ABB and Standard insulation system
