ABB ACS 600 MultiDrive, Hardware Manual

Page: 8 / 94

Safety Instructions
vi ACx = ACS/ACC/ACP ACS/ACC/ACP 604/607 Frequency Converters
Motor Connections
WARNING! Operation is not allowed if the motor nominal voltage is
less than one half of (ACP: 0.4 times) the ACx 600 nominal input
voltage, or the motor nominal current is less than 1/6 of the ACx 600
nominal output current.
As with all frequency converters employing the most modern IGBT
inverter technology, the ACx 600 output comprises – regardless of
output frequency – pulses of approximately 1.35 times the mains
network voltage with a very short rise time.
The voltage of the pulses can be almost double at the motor terminals,
depending on the motor cable properties. This in turn can cause
additional stress to the motor insulation. The motor manufacturer
should be consulted regarding the construction of the motor insulation.
Failure of the motor to fulfil the following requirements may shorten its
life.
Motor Insulation
Requirement
The requirement of motor insulation level in ACx 600 frequency
converter drive is given below.
Motor Type Nominal Mains Voltage Motor Insulation Requirement
ABB Motors
(manufactured from
beginning of 1998) U
N
<
500 V
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525 V
<
U
N
≤
690 V
6WDQGDUGLQVXODWLRQDQGGXGWILOWHU
RU
VSHFLDOLQVXODWLRQV\VWHP
5DQGRPZRXQG0RWRUV
U
N
≤
420 V
0RWRULQVXODWLRQV\VWHPPXVWZLWKVWDQG
Ó
LL
= 1300 V.
420 V
<
U
N
≤
500 V
,IPRWRULQVXODWLRQV\VWHPZLWKVWDQGV
Ó
LL
= 1600 V
DQG
µ
VULVHWLPHD
du/dt filter
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With a du/dt filter at the output of the
ACx 600,
PRWRULQVXODWLRQV\VWHP
must
ZLWKVWDQGÓ
LL
= 1300 V.
500 V
<
U
N
≤
600 V
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Ó
//
9$GXGWILOWHUPXVWEH
XVHGDWWKHRXWSXWRIWKH$&[
600 V
<
U
N
≤
690 V
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Ó
LL
= 1800 V. A du/dt filter must be
used
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.
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N
≤
690 V
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Ó
//
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µ
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