Section VII Test runing and application
27
Table 7.2
Type of load
Start time
(seconds)
The initial
voltage
Voltage starting
(maximum current limit)
Limit Start
Ball
30
60%
4
4.5
Fans
26
30%
4
3.5
Centrifugal pump
16
40%
4
2.5
Piston compressor
16
40%
4
3
Enhance the
mechanical
16
60%
4
3.5
Mixer
16
50%
4
3
Crusher
16
50%
4
3.5
Screw compressor
16
40%
4
3
Screw conveyor
20
40%
4
2
Light load motor
16
30%
4
3
Belt conveyors
20
40%
4
2.5
Heat pump
16
40%
4
3
