8 Additional information
BU 0180 en-4118
197
8.8.2 87 Hz characteristic curve (only 400V devices)
(
Variation 01:17)
The 87 Hz - characteristic represents an
extension of the speed adjustment range with
a constant motor nominal torque. The
following points must be met for realisation:
• Motor delta connection with a motor
winding for 230/400 V
• Frequency inverter with an operating
voltage 3~400 V
• Output current of frequency inverter must
be greater than the delta current of the
motor used (ref. value
frequency inverter
power ≥ √3 motor power)
87 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
M/Mn
M/M
N
P/P
N
0
1445
2890
Frequency
[Hz]
Speed
[1/min]
Figure 22: 87 Hz characteristic curve
In this configuration, the motor used has a rated operating point at 230 V/50 Hz and an extended
operating point at 400 V/ 87 Hz. This increases the power of the drive by a factor of
√
3 The nominal
torque of the motor remains constant up to a frequency of 87 Hz. Operation of a 230 V winding with
400 V is totally uncritical as the insulation is designed for test voltages of > 1000 V.
NOTE: The following motor data applies to standard motors with 230V/400 V windings.
Motor
(IE1)
SK …
Frequency
inverter
SK 1xxE-…
M
N
*
[Nm]
Parameterisation data of frequency inverter
F
N
[Hz]
n
N
[min-1]
I
N
[A]
U
N
[V]
P
N
[kW]
cos
ϕ
Y/
Δ
R
St
[
Ω
]
71S/4
550-340-A
1.73
50
1365
1.3
230
0.25
0.79
Δ
39.9
71L/4
750-340-A
2.56
50
1380
1.89
230
0.37
0.71
Δ
22.85
80S/4
111-340-A
3.82
50
1385
2.62
230
0.55
0.75
Δ
15.79
80L/4
151-340-A
5.21
50
1395
3.52
230
0.75
0.75
Δ
10.49
90S/4
221-340-A
7.53
50
1410
4.78
230
1.1
0.76
Δ
6.41
* at rated point
Motor
(IE2)
SK …
Frequency
inverter
SK 1xxE-…
M
N
*
[Nm]
Parameterisation data of frequency inverter
F
N
[Hz]
n
N
[min-1]
I
N
[A]
U
N
[V]
P
N
[kW]
cos
ϕ
Y/
Δ
R
St
[
Ω
]
80SH/4
111-340-A
3.73
50
1415
2.39
230
0.55
0.7
Δ
9.34
80LH/4
151-340-A
5.06
50
1410
3.12
230
0.75
0.75
Δ
6.30
90SH/4
221-340-A
7.32
50
1430
4.26
230
1.1
0.8
Δ
4.96
* at rated point
Summary of Contents for SK 180E Series
Page 1: ...BU 0180 en NORDAC BASE SK 180E SK 190E Users Manual for Frequency Inverters...
Page 4: ...NORDAC BASE SK 180E SK 190E Users Manual for Frequency Inverters 4 BU 0180 en 4118...
Page 185: ...8 Additional information BU 0180 en 4118 185 8 3 4 EU Declaration of Conformity...
Page 211: ...Key word index BU 0180 en 4118 211...
Page 212: ...6071802 4118...
