10 questions Intermediate

ECADEMY test

37 - Grundfos SQ/SQE

This course test contains 10 questions and can be retaken at any time.

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Question 3 of 10 Intermediate

Is the SQE pump able to provide constant pressure?

Question 4 of 10 Intermediate

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

Question 5 of 10 Intermediate

What happens if the water level in the well drops below the inlet?

Question 7 of 10 Intermediate

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

Question 8 of 10 Intermediate

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

Question 9 of 10 Intermediate

What happens if the static water level is too low?

Question 10 of 10 Intermediate

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Correct
Q: Why is correct sizing of the submersible pump important?
A: Because an undersized pump will not be able to deliver the required flow and pressure and an oversized pump reduces energy efficiency, which increases operational costs.
Correct
Q: Which protection features does the SQE have?
A: Voltage handling, soft start, dry-running protection and overload protection.
Correct
Q: Is the SQE pump able to provide constant pressure?
A: Yes.
Correct
Q: What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?
A: Between 150 V and 315 V
Correct
Q: What happens if the water level in the well drops below the inlet?
A: The motor power consumption stays the same
Correct
Q: What is the benefit of a slow increase in speed?
A: It keeps the motor current low
Correct
Q: By how much does the supply voltage decrease before the motor contactor stops the pump?
A: More than 10 %
Correct
Q: How many times higher than nominal speed does the motor current reach during the first milliseconds?
A: Seven times higher
Correct
Q: What happens if the static water level is too low?
A: The water level is brought down below the inlet of the pump
Correct
Q: How does the integrated dry-running protection work?
A: It automatically shuts down the pump if water shortage is detected.