40 Planning the electrical installation
Note 2:
Explosion-safe (EX) motors
The motor manufacturer should be consulted regarding the construction of the
motor insulation and additional requirements for explosion-safe (EX) motors.
Note 3:
ABB high-output motors and IP23 motors
The rated output power of high output motors is higher than what is stated for the
particular frame size in EN 50347:2001. This table shows the requirements for ABB
random-wound motor series (for example, M3AA, M3AP and M3BP).
Nominal AC supply
voltage
Requirement for
Motor
insulation
system
ABB d
u
/d
t
and common mode filters, insulated N-end motor
bearings
P
N
< 100kW 100kW <
P
N
< 200 kW
P
N
> 200 kW
P
N
< 140 hp 140 hp <
P
N
< 268 hp
P
N
> 268 hp
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 + d
u
/d
t
+ CMF
or
Reinforced - + N + N + CMF
600 V <
U
N
< 690 V Reinforced + d
u
/d
t
+ N + d
u
/d
t
+ N + d
u
/d
t
+ CMF
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