Question 1 of 6
Intermediate

Why is it important to protect the pump from over- and under voltage?

Question 2 of 6
Intermediate

How many times higher than nominal speed does the motor current reach during the first milliseconds?

Question 3 of 6
Intermediate

By how much does the supply voltage decrease before the motor contactor stops the pump?

Question 4 of 6
Intermediate

The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?

Question 5 of 6
Intermediate

What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?

Question 6 of 6
Intermediate

What is the benefit of a slow increase in speed?

Question 6 of 6
Intermediate

Happy with your answers?

Submit your current answers and get the final test result.

Test results

Congratulations. You have passed the test and completed the 37 - Grundfos SQ/SQE
Sorry. You did not pass the 37 - Grundfos SQ/SQE test this time
Achieved badges:
How would you rate this course?
1: Why is it important to protect the pump from over- and under voltage?
Because large variations in power supply will damage the motor over time.
1: Why is it important to protect the pump from over- and under voltage?
To avoid burning the house fuses.
You can find the answer here >
1: Why is it important to protect the pump from over- and under voltage?
To minimise the power consumption.
You can find the answer here >
2: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Four times higher
You can find the answer here >
2: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Six times higher
You can find the answer here >
2: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Seven times higher
3: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 10 %
3: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 15 %
You can find the answer here >
3: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 20 %
You can find the answer here >
4: The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?
In wells with water temperature up to 60° C.
You can find the answer here >
4: The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?
In installations that require constant pressure.
You can find the answer here >
4: The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?
In original 4” boreholes where sediments over the years have narrowed the hole.
5: What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?
Between 100 V and 250 V
You can find the answer here >
5: What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?
Between 150 V and 315 V
5: What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?
Between 230 V and 400 V
You can find the answer here >
6: What is the benefit of a slow increase in speed?
It keeps the motor current low
6: What is the benefit of a slow increase in speed?
It keeps pump movements at a minimum
You can find the answer here >
6: What is the benefit of a slow increase in speed?
It removes the need for motor contactors
You can find the answer here >