ABB ACS880-17 - Additional Requirements for Explosion-Safe (EX) Motors

72 Guidelines for planning the electrical installation
The abbreviations used in the table are defined below.
Additional requirements for explosion-safe (EX) motors
If you will use an explosion-safe (EX) motor, follow the rules in the requirements table
above. In addition, consult the motor manufacturer for any further requirements.
Non-ABB motors
Random
-wound
and
form-
wound
U
N
< 420 V Standard:
Û
LL
= 1300 V
+ N or CMF + N + CMF
420 V < U
N
< 500 V Standard:
Û
LL
= 1300 V
+ du/dt + (N or CMF) + N + du/dt + CMF
or
Reinforced:
Û
LL
= 1600 V,
0.2
microsecond
rise time
+ N or CMF + N + CMF
500 V < U
N
< 600 V Reinforced:
Û
LL
= 1600 V
+ du/dt + (N or CMF) + N + du/dt + CMF
or
Reinforced:
Û
LL
= 1800 V
+ N or CMF + N + CMF
600 V < U
N
< 690 V Reinforced:
Û
LL
= 1800 V
+ du/dt + N + N + du/dt + CMF
Reinforced:
Û
LL
= 2000 V,
0.3
microsecond
rise time
N + CMF + N + CMF
Abbr. Definition
U
N
Nominal AC line voltage
Û
LL
Peak line-to-line voltage at motor terminals which the motor insulation must withstand
P
N
Motor nominal power
du/dt du/dt filter at the output of the drive (standard equipment)
CMF Common mode filter (standard equipment)
N N-end bearing: insulated motor non-drive end bearing
n.a. Motors of this power range are not available as standard units. Consult the motor manufacturer.
Motor
type
Nominal AC supply
voltage
Requirement for
Motor
insulation
system
ABB du/dt and common mode filters, insulated N-end
motor 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