1
How is it possible to protect the motor against bad power supply?
2
How does over- and under voltage, phase unbalance and phase loss impact the pump motor?
3
On top of energy-efficient pump operation, how does a frequency drive benefit your installation?
4
What can be done to the well if sand continues to enter a well after the well development has been carried out?
5
In which areas is there a bigger risk of pumping corrosive groundwater?
6
What could be the consequences of using an undersized pump in a well?
7
What should the minimum flow past the motor be to ensure sufficient motor cooling?
Test results
01.
Q: How is it possible to protect the motor against bad power supply?
A: By means of an electronic motor protection that senses all possible deviations
01.
Q: How is it possible to protect the motor against bad power supply?
A: By means of a UC filter
01.
Q: How is it possible to protect the motor against bad power supply?
A: By using a special water resistant cabling
02.
Q: How does over- and under voltage, phase unbalance and phase loss impact the pump motor?
A: It increases speed and thereby the performance of the pump
02.
Q: How does over- and under voltage, phase unbalance and phase loss impact the pump motor?
A: It raises the motor temperature, reducing the lifetime
02.
Q: How does over- and under voltage, phase unbalance and phase loss impact the pump motor?
A: It reduces flow and pressure
03.
Q: On top of energy-efficient pump operation, how does a frequency drive benefit your installation?
A: It comes with a built-in motor protection
03.
Q: On top of energy-efficient pump operation, how does a frequency drive benefit your installation?
A: It can reduce cavitation
03.
Q: On top of energy-efficient pump operation, how does a frequency drive benefit your installation?
A: It cools the motor
04.
Q: What can be done to the well if sand continues to enter a well after the well development has been carried out?
A: The well driller can try to run the pump at its maximum capacity in short periods of time over a couple of days
04.
Q: What can be done to the well if sand continues to enter a well after the well development has been carried out?
A: The well driller can replace the casing with a new one with smaller slots
04.
Q: What can be done to the well if sand continues to enter a well after the well development has been carried out?
A: An additional filter can be installed inside the casing
05.
Q: In which areas is there a bigger risk of pumping corrosive groundwater?
A: In forests with old trees
05.
Q: In which areas is there a bigger risk of pumping corrosive groundwater?
A: In coastal areas
05.
Q: In which areas is there a bigger risk of pumping corrosive groundwater?
A: In elevations above 1000 m
06.
Q: What could be the consequences of using an undersized pump in a well?
A: The pump will give too high pressure
06.
Q: What could be the consequences of using an undersized pump in a well?
A: The risk of cavitation is very high
06.
Q: What could be the consequences of using an undersized pump in a well?
A: he pump may not be able to deliver the required
07.
Q: What should the minimum flow past the motor be to ensure sufficient motor cooling?
A: 0,5 m/s
07.
Q: What should the minimum flow past the motor be to ensure sufficient motor cooling?
A: 0,15 m/s
07.
Q: What should the minimum flow past the motor be to ensure sufficient motor cooling?
A: There are no specific requirements
08.
Q: What is well development?
A: The drilling of a hole in the ground to find groundwater
08.
Q: What is well development?
A: The installation of the well casing in the centre of the borehole
08.
Q: What is well development?
A: A process that ensures that the well’s sand filter has been improved so the well produces clean, sand-free water