An increase of 1.5 times the rated current over a 2 minute period is permissible for the drive motors (in
accordance with EN 60034-1), without tripping the motor protection switch.
Procedure
1. Take the settings for the motor protection switch from the following table.
2. Take into consideration that certain operating conditions (for example, cold vacuum pump start)
can cause short-term increases in current consumption.
3. Set the desired value on the motor protection switch.
Voltage [V]
Frequency [Hz]
Motor rating [kW]
I
N
[A]
I
max
[A]
190 – 200
50
2.0
8.2
61
380 – 400
50
2.0
4.1
31
208
60
2.4
8.9
70
220
60
2.4
8.4
66
230
60
2.4
8.2
64
440
60
2.4
4.2
33
460
60
2.4
4.1
32
Tbl. 5:
Motor protection switch setting values for Hena 61 global motor
Voltage [V]
Frequency [Hz]
Motor rating [kW]
I
N
[A]
I
max
[A]
200
50
2.0
8.7
80
346
50
2.0
5.0
46
220
60
2.4
8.8
77
380
60
2.4
5.1
45
Tbl. 6:
Motor protection switch setting values for Hena 61 Asian motor
Voltage [V]
Frequency [Hz]
Motor rating [kW]
I
N
[A]
I
max
[A]
190 – 200
50
2.7
12.0
99
380 – 400
50
2.7
6.0
50
208
60
3.4
13.2
107
220
60
3.4
13.0
106
230
60
3.4
12.8
104
440
60
3.4
6.5
53
460
60
3.4
6.4
52
Tbl. 7:
Motor protection switch setting values for Hena 101 global motor
Voltage [V]
Frequency [Hz]
Motor rating [kW]
I
N
[A]
I
max
[A]
200
50
2.7
15.6
142
346
50
2.7
9.0
82
220
60
3.4
14.2
131
380
60
3.4
8.2
76
Tbl. 8:
Motor protection switch setting values for Hena 101 Asian motor
5.5.5 Frequency inverter for vacuum pumps with 3-phase motor
Rotary vane pumps with variable rotation speed can be operated within a mains frequency range of 35
to 60 Hz. Start-up is ramped (maximum run-up time: 30 s). Shutdown can take place immediately.
Installation
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