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du/dt filters
Du/dt filtering suppresses inverter output voltage spikes
and rapid voltage changes that stress motor insulation.
ABB form -wound 380 690 Standard insulation system.
Û Peak line line voltage otor terminals.
HXR and motors
ABB random -wound 380 690 heck otor insulation system with the otor manufacturer.2 ^s, du/dt filtering not
required.
M otors 500 600 Standard insulation system conjunction with du/dt filtering reinforced insulation.
42 Hardware options FE68404592 REV 3.
Additionally, du/dt filtering reduces capacitive leakage
currents and high frequency emission the motor
cable well high frequency losses and bearing
currents the motor.
The need for du/dt filtering depends the motor
insulation.
500 600 the insulation system withstands LL=1800 u/dt filtering not required.
600 690 the motor insulation system withstands LL=2000 and At=0. ith du/dt filtering, the insulation system must
w ithstands LL=1800 V. For
m ore information please see the ACS800 hardware
manuals.
600 690 Reinforced insulation system conjunction with du/dt filtering.
HXR and motors du/dt filtering with voltages over 500 V.
M otor type Nominal mains
voltage (UN)
M otor insulation requirement
ABB and 500 Standard insulation system.7.e.
With du/dt filtering, the insulation system must withstand LL=1600 V.
Symbol Explanation
U Nominal mains voltage.
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.3 ^s,
du/dt filtering not required.
Random -wound and
Form -wound
420 500 the insulation system withstands LL=1600 and At=0. ith du/dt filtering, the insulation system must withstand LL=1300 V.
At Rise tim i.2009
.
Non-ABB 420 Insulation system must withstand LL=1300 V. interval during which line line voltage otor term inals changes from 10% 90% of
full voltage range. For information the construction of
Filter selection table for ACS800
the motor insulation, consult the manufacturer. the
motor does not fulfil the following requirements, the
lifetime the motor might decrease
