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The need for du/dt filtering depends the motor
insulation. ith du/dt filtering, the insulation system must withstand LL=1300 V.
F ilter tio 0
M otor type Nominal mains
voltage N)
M otor insulation requirement
ABB and Standard insulation system. ith du/dt filtering, the insulation system must
withstand LL=1800 V.2.
At Rise tim i.
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.
Random -wound and
Form -wound
420 500 the insulation system withstands LL=1600 and At=0.
Û Peak line line voltage otor terminals.
M otors 500 600 Standard insulation system conjunction with du/dt filtering reinforced insulation.
HXR and motors /dt filtering with voltages over 500 V.2009
.
500 600 the insulation system withstands LL=1800 du/dt filtering not required. the
m otor does not fulfil the following requirements, the
lifetime the motor might decrease. For information the construction of
the motor insulation, consult the manufacturer.
600 690 Reinforced insulation system conjunction with /dt filtering.
HXR and motors
ABB random -wound 380 690 heck otor insulation system with the otor manufacturer. For
more information please see the ACS800 hardware
manuals. interval during which line line voltage otor term inals changes from 10% of
full voltage range.3 ^s,
d u/dt filtering not required.2 ^s, u/dt filtering not
required.e.
Symbol Explanation
U Nominal mains voltage.
ABB form -wound 380 690 Standard insulation system.
W ith du/dt filtering, the insulation system must withstand LL=1600 V.
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.
Non-ABB 420 Insulation system must withstand LL=1300 V.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
