What is the main advantage of using a variable frequency drive in submersible pumps?
Which of these three parameters isn’t essential in terms of gaining an optimal motor protection?
At which stage does Grundfos recommend installing an output filter?
When does undervoltage typically happen?
What is a general rule of thumb when it comes to a motor cable?
Which type of output filter does Grundfos recommend?
Test results
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Q: What is the main advantage of using a variable frequency drive in submersible pumps?
A: It allows you to regulate your installation
Q: What is the main advantage of using a variable frequency drive in submersible pumps?
A: It is much quieter
Q: What is the main advantage of using a variable frequency drive in submersible pumps?
A: It is easy to install
Q: Which of these three parameters isn’t essential in terms of gaining an optimal motor protection?
A: Motor current
Q: Which of these three parameters isn’t essential in terms of gaining an optimal motor protection?
A: Motor temperature
Q: Which of these three parameters isn’t essential in terms of gaining an optimal motor protection?
A: Motor power
Q: At which stage does Grundfos recommend installing an output filter?
A: If the net supply is over 340 V
Q: At which stage does Grundfos recommend installing an output filter?
A: If the net supply is over 360 V
Q: At which stage does Grundfos recommend installing an output filter?
A: If the net supply is over 380 V
Q: When does undervoltage typically happen?
A: When the drop cables are too small
Q: When does undervoltage typically happen?
A: When the drop cables are too large
Q: When does undervoltage typically happen?
A: When there is too much heat in the motor
Q: What is a general rule of thumb when it comes to a motor cable?
A: It must always be submerged in liquid
Q: What is a general rule of thumb when it comes to a motor cable?
A: It must always be used in the air
Q: What is a general rule of thumb when it comes to a motor cable?
A: It must be larger than the drop cable
Q: Which type of output filter does Grundfos recommend?
A: Line choke filter
Q: Which type of output filter does Grundfos recommend?
A: Sine wave filter
Q: Which type of output filter does Grundfos recommend?
A: dV/dt filter