Hardware Manual

60 Planning the electrical installation
Motor
type
Nominal AC supply
voltage
Requirement for
Motor
insulation
system
ABB du/dt and common mode filters,
insulated N-end motor bearings
P
N
< 100 kW
and frame size
< IEC 315
100 kW <
P
N
< 350 kW
or
IEC 315 <
frame size <
IEC 400
P
N
< 134 hp
and frame size
< NEMA 500
134 hp <
P
N
< 469 hp
or
NEMA 500 <
frame
size <
NEMA 580
ABB motors
Random-
wound
M2_,M3_
and M4_
U
N
< 500 V Standard - + N
500 V < U
N
< 600 V Standard + du/dt + du/dt + N
or
Reinforced - + N
600 V < U
N
< 690 V
(cable length <
150 m)
Reinforced + du/dt + du/dt + N
600 V < U
N
< 690 V
(cable length >
150 m)
Reinforced - + N
Form-
wound
HX_ and
AM_
380 V < U
N
< 690 V Standard n.a. + N + CMF
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
HDP Consult the motor manufacturer.
* manufactured before 1.1.1998
** For motors manufactured before 1.1.1998, check for additional instructions with the
motor manufacturer.