NORD Drivesystems BU0180 - Manual (Page 172)

SK 180E Manual for frequency inverters
172 Pre-series version BU 0180 GB-0914
9.8 Motor data - characteristic curves
9.8.1 50Hz characteristic curve
( Variation 1:10)
a) 115V / 230 V frequency inverter
The motor used for 50 Hz operation can be operated
up to its rated point 50 Hz/230 V with the nominal
torque. In spite of this, operation above 50Hz is
possible, however the output torque reduces in a
non-linear manner (see following diagram). Above
the rated point, the motor enters its field weakening
range, as the voltage cannot be raised over 230 V
when the frequency is increased above 50 Hz.
Because of the mains voltage, maximum 230 V are
available.
The following data is based on an output of 4 kW
using a 230/400 V motor winding. They apply for IE1
or IE2 motors. It should be noted that these details
may deviate slightly, as motors are subject to certain
manufacturing tolerances. It is recommended that the
resistance of the connected motor is measured by the frequency inverter (P208 / P220).
Frequency inverter type
Parameterisation data of frequency inverter
F
N
[Hz]
n
N
[min
-1
]
I
N
[A] U
N
[V] P
N
[kW] cos

Circuit
R
St
[

]
IE1 Motors
SK…71S/4 TI 4 - SK 1x0E-250-323-B* 50 1365 1.3 230 0.25 0.79 Delta 39.90
SK…71L/4 TI 4 - SK 1x0E-370-323-B* 50 1380 1.89 230 0.37 0.71 Delta 22.85
SK…80S/4 TI 4 - SK 1x0E-550-323-B* 50 1385 2.62 230 0.55 0.75 Delta 15.79
SK…80L/4 TI 4 - SK 1x0E-750-323-B* 50 1395 3.52 230 0.75 0.75 Delta 10.49
SK…90S/4 TI 4 - SK 1x0E-111-323-B 50 1410 4.78 230 1.1 0.76 Delta 6.41
IE2 Motor
SK…80SH/4 TI 4 - SK 1x0E-550-323-B* 50 1415 2.39 230 0.55 0.70 Delta 9.34
SK…80LH/4 TI 4 - SK 1x0E-750-323-B* 50 1410 3.12 230 0.75 0.75 Delta 6.30
SK…90SH/4 TI 4 - SK 1x0E-111-323-B 50 1430 4.26 230 1.1 0.80 Delta 4.96
* the same data apply for the use of the 115V version of the SK1x0E
Frequency inverter type
Performance data at rated point**
P
B
[kW] n
B
[minP
-1P
] M
B
[Nm]
SK…71S/4 TI 4 - SK 1x0E-250-323-B* 0.25 1380 1.73
SK…71L/4 TI 4 - SK 1x0E-370-323-B* 0.37 1380 2.56
SK…80S(H)/4 TI 4 - SK 1x0E-550-323-B* 0.55 1375 (1420) 3.82 (3.73)
SK…80L(H)/4 TI 4 - SK 1x0E-750-323-B* 0.75 1375 (1415) 5.21 (5.06)
SK…90S(H)/4 TI 4 - SK 1x0E-111-323-B 1.1 1395 (1435) 7.53 (7.32)
* the same data apply for the use of the 115V version of the SK1x0E
** Values in brackets apply for IE2 motors
50 Hz characteristic curve (4-pole motor)
0
0,2
0,4
0,6
0,8
1
1,2
0 10 20 30 40 50 60 70 80 90 100
Frequenz / Hz
Drehzahl / 1/min
M/Mn
M/M
N
P/P
N
0
1445 2890
Frequency
[Hz]
Speed
[1/min]