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Using a Single Phase Power Source
232
<Figure-2 Typical Single-Phase Configuration>
12.2
Power(HP), Input Current and Output Current
When using a three-phase VFD with single-
phase input, derating the drive’s output current and
horsepower will be necessary due to the increase in DC bus ripple voltage and current. In
addition, the input current through the remaining two phases on the diode bridge converter
will approximately double, creating another derating consideration for the VFD. Input current
harmonic distortion will increase, making the overall input power factor low.
Input current distortion over 100% is likely under single-phase conditions without a reactor.
Therefore, the reactor is always required for such applications.
Using a motor that is selected by the three-phase drive ratings with single-phase input may
result in poor performance and premature drive failure.
The selected drive of single-phase current ratings must meet or exceed the motor current
ratings as indicated in the following table.
Single-Phase Current Rating (200V/60Hz)*
[kW]
[HP]
Output Amp
Input Amp
HD [A]
ND [A]
HD [A]
ND [A]
0.75kW
1
2.6
4.1
4.3
6.8
1.5kW
2
4.0
6.0
6.9
10.6
2.2kW
3
6.2
8.2
11.2
14.9
3.7kW
5
8.1
12
14.9
21.3
Содержание SV-iS7 series
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Страница 126: ...Basic Functions 115 Basic Functions Code Description V1 Quantizing ...
Страница 223: ...212 Peripheral Devices Group 2 ...
Страница 224: ...Peripheral Devices Peripheral Devices 213 Group 3 ...
Страница 225: ...214 Peripheral Devices Group 4 ...
Страница 231: ...220 Peripheral Devices TYPE 1 Maximum 400 Watts TYPE 2 Maximum 600 Watts ...
Страница 236: ...Safety Funtion STO Safe Torque Off Safety Funtion STO Safe Torque Off 225 10 2 1 Safety Function Wiring Diagram ...
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