ABB ACQ810, Hardware Manual

Page: 53 / 134

Planning the electrical installation 53
5. Ensure that the motor insulation system withstands the maximum peak voltage in the
motor terminals. See the Requirements table below for the required motor insulation
system and drive filtering.
Example: When the supply voltage is 440 V, the maximum peak voltage in the motor
terminals can be approximated as follows: 440 V · 1.35 · 2 = 1190 V. Check that the
motor insulation system withstands this voltage.
6. Use insulated N-end (non-drive end) bearings and output filters from ABB according to
the Requirements table below.
„
Requirements table
The following table shows how to select the motor insulation system and when an optional
ABB du/dt filter, insulated N-end (non-drive end) motor bearings and ABB common mode
filters are required. Failure of the motor to fulfil the following requirements or improper
installation may shorten motor life or damage the motor bearings and voids the warranty.
Note: The drive is equipped with the common mode filter as standard.
Motor
type
Nominal AC line
voltage
Requirement for
Motor
insulation
system
ABB du/dt filter, insulated N-end bearing and ABB common mode
filter
P
N
< 100 kW
and
frame size < IEC 315
100 kW < P
N
< 350 kW
or
frame size > IEC 315
P
N
> 350 kW
or
frame size > IEC 400
P
N
< 134 hp
and frame size <
NEMA 500
134 hp < P
N
< 469 hp
or frame size >
NEMA 500
P
N
> 469 hp
or frame size >
NEMA 580
ABB motors
Random-
wound
M2_ and
M3_ U
N
< 500 V Standard - + N + N + CMF
500 V < U
N
< 600 V Standard + du/dt + du/dt + N + du/dt + N + CMF
or
Reinforced - + N + N + CMF
600 V < U
N
< 690 V Reinforced + du/dt + du/dt + N + du/dt + N + CMF
Form-
wound
HX_ and
AM_ 380 V < U
N
< 690 V Standard n.a. + N + CMF P
N
< 500 kW: + N +
CMF
P
N
> 500 kW: + N +
CMF + du/dt
Old* form-
wound
HX_ and
modular 380 V < U
N
< 690 V Check with
the motor
manufacturer.
+ du/dt with voltages over 500 V + N + CMF
Random-
wound
HX_ and
AM_ ** 0 V < U
N
< 500 V Enamelled
wire with fiber
glass taping + N + CMF
500 V < U
N
< 690 V + du/dt + N + CMF