Additional Requirements For Explosion-Safe (Ex) Motors - ABB ACS880-37 Hardware Manual

74 Guidelines for planning the electrical installation
Motor Nominal AC
type supply voltage
Non-ABB motors
Random U < 420 V
N
-wound
and
420 V < U < 500 V Standard:
N
form-
wound
500 V < U < 600 V Reinforced:
N
600 V < U < 690 V Reinforced:
N
*** If the intermediate DC circuit voltage of the drive is increased from the nominal level by resistor braking,
check with the motor manufacturer if additional output filters are needed in the applied drive operation
range.
The abbreviations used in the table are defined below.
Abbr. Definition
U Nominal AC line voltage
N
Û Peak line-to-line voltage at motor terminals which the motor insulation must withstand
LL
P Motor nominal power
N
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.

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.
Motor ABB du/dt and common mode filters, insulated N-end
insulation
system
P < 100 kW
N
and frame
size <
IEC 315
P < 134 hp
N
and frame
size <
NEMA 500
Standard: -
Û = 1300 V
LL
+ du/dt
Û = 1300 V
LL
or
Reinforced: -
Û = 1600 V,
LL
0.2
microsecond
rise time
+ du/dt
Û = 1600 V
LL
or
Reinforced: -
Û = 1800 V
LL
+ du/dt
Û = 1800 V
LL
Reinforced: -
Û = 2000 V,
LL
0.3
microsecond
rise time ***
Requirement for
motor bearings
100 kW < P < 350 kW
N
or
IEC 315 < frame size <
IEC 400
134 hp < P < 469 hp
N
or
NEMA 500 < frame
size < NEMA 580
+ N or CMF
+ du/dt + (N or CMF)
+ N or CMF
+ du/dt + (N or CMF)
+ N or CMF
+ du/dt + N
N + CMF
P > 350 kW
N
or
frame size >
IEC 400
P > 469 hp
N
or
frame size >
NEMA 580
+ N + CMF
+ N + du/dt + CMF
+ N + CMF
+ N + du/dt + CMF
+ N + CMF
+ N + du/dt + CMF
+ N + CMF