ABB ACQ810-04, Hardware Manual, Page: 45 / 144

Planning the electrical installation 45

Requirements table
The following table shows how to select the motor insulation system and when optional
ABB d
u /d t filters, 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.
Manu
facturer
Motor type Nominal AC line
voltage
Requirement for
Motor
insulation
system
ABB d u /d t and
common mode filters
and insulated N-end
bearings
100 kW < P
N
< 350 kW
or
IEC 315 < frame size <
IEC 400
P
N
> 350 kW or
frame size > IEC 400
134 hp < P
N
< 469 hp
or
NEMA 500 < frame
size < NEMA 580
P
N
> 469 hp or frame
size > NEMA 580
A
B
B Random-wound
M2_, M3_ and
M4_ U
N
< 500 V Standard + N + N + CMF
500 V < U
N
< 600 V Standard + d u /d t + N + d u /d t + N + CMF
or
Reinforced + N + N + CMF
600 V < U
N
< 690 V
(cable length <
150 m)
Rein d u /d t + N + d u /d t + N + CMF
600 V < U
N
< 690 V
(cable length >
150 m)
Reinforced + N + N + CMF
Form-wound
HX_ and AM_ 380 V < U
N
< 690 V Standard + N + CMF P
N
< 500 kW: + N +
CMF
P
N
> 500 kW: + N +
CMF + d u /d t
Old* form-
wound HX_ and
modular 380 V < U
N
< 690 V Check with the
motor
manufacturer.
+ d u /d t 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 + d u /d t + N + CMF