How much energy can you expect to save when installing a VFD with the main pivot?
What does a VFD do?
Which of the following is not a benefit of remote monitoring via data transmission devices?
When a VFD is installed with a pump, what happens if the valve for one irrigation zone is closed and another is open?
What do you need to control to achieve high efficiency in all types of irrigation?
Can a VFD be used as an over-frequency drive when pump performance needs to be increased?
Test results
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Q: How much energy can you expect to save when installing a VFD with the main pivot?
A: Minimum 10%
Q: How much energy can you expect to save when installing a VFD with the main pivot?
A: Minimum 15%
Q: How much energy can you expect to save when installing a VFD with the main pivot?
A: Minimum 20%
Q: What does a VFD do?
A: It changes the frequency of an electric current supplied to an electric motor
Q: What does a VFD do?
A: It changes the temperature of the pumped water
Q: What does a VFD do?
A: It improves sprinkler conditions
Q: Which of the following is not a benefit of remote monitoring via data transmission devices?
A: It helps to manage alerts
Q: Which of the following is not a benefit of remote monitoring via data transmission devices?
A: It helps to reduce energy consumption
Q: Which of the following is not a benefit of remote monitoring via data transmission devices?
A: It helps to manage diagnostics
Q: When a VFD is installed with a pump, what happens if the valve for one irrigation zone is closed and another is open?
A: A pressure sensor notifies the VFD to reduce the pressure, and thereby the speed of the pump.
Q: When a VFD is installed with a pump, what happens if the valve for one irrigation zone is closed and another is open?
A: The pressure decreases in the zone that is open.
Q: When a VFD is installed with a pump, what happens if the valve for one irrigation zone is closed and another is open?
A: The power consumption increases by almost 50% compared with both zones open.
Q: What do you need to control to achieve high efficiency in all types of irrigation?
A: Energy
Q: What do you need to control to achieve high efficiency in all types of irrigation?
A: Irrigation time
Q: What do you need to control to achieve high efficiency in all types of irrigation?
A: Flow and pressure
Q: Can a VFD be used as an over-frequency drive when pump performance needs to be increased?
A: Yes
Q: Can a VFD be used as an over-frequency drive when pump performance needs to be increased?
A: No
Q: Can a VFD be used as an over-frequency drive when pump performance needs to be increased?
A: Yes, but only if the motor has enough reserve power