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35 times the mains network voltage
with very short rise time.
N on-ABB
R andom ound
Un 420 Insulation system must ithstand ÛLL=1300 V.
ABB random -wound
HXR and otors
380 690 Check otor insulation system ith the otor manufacturer.
When needed? The need for du/dt filtering de
pends the motor insulation.2004 25
. For information the
construction the motor insulation, consult the
manufacturer.
A Rise tim i.
3AFE 68248531 REV 31.
600 690 the otor insulation system ithstands ÛLL=1800 du/dt filtering not required.3 ^s,
du /dt filtering not required. the motor does not fulfil the following
requirements, the lifetime the motor might shorten.
600 690 Reinforced insulation system conjunction ith /dt filtering.
As with all frequency converters employing the most
modern IGBT inverter technology, the ACS800 output
comprises regardless output frequency pulses of
approximately 1.
Insulated N-end (non-driven end) bearings and or
common mode filters are also required for motor
bearing currents with motors bigger than 100 kW. Additionally, du/dt filtering reduces capaci
tive leakage currents and high frequency emission of
the motor cable well high frequency losses and
bearing currents the motor.
U Peak line line voltage otor term inals. The voltage can almost
double the motor terminals, depending motor
cable properties. .
Sym bol Explanation
Un Nominal ains voltage.
420 500 the insulation system ithstands ÛLL=1600 and At=0. For
more information see the ACS800 hardware manuals.
Du/dt filtering suppresses inverter output voltage
spikes and rapid voltage changes that stress motor
insulation.
Non-ABB Form -wound 600 690 the otor insulation system ithstands ÛLL=2000 and At=0.e.
500 600 the insulation system ithstands ÛLL=1800 /dt filtering not required. With du/dt filtering, the insulation system must withstand ÛLL=1300 V.2 ^s, du/dt filtering is
not required.
Filter selection table for ACS800
M otor type Nominal mains
voltage (Un)
M otor insulation requirem ent
ABB and
M3 otors
Un 500 Standard insulation system.
W ith /dt filtering, the insulation system must ithstand ÛLL=1600 V.
ABB form ound
HXR and otors
380 690 Standard insulation system.3.Output filters
Factory installed filters.
500 600 Standard insulation system conjunction with du/dt filtering reinforced insulation.
du /dt filtering with voltages over 500 V. interval during hich line line voltage otor term inals changes from 10% 90%
of full voltage range
