Question 1 of 6
Intermediate

In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?

Question 2 of 6
Intermediate

Which are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?

Question 3 of 6
Intermediate

How does the integrated dry-running protection work?

Question 4 of 6
Intermediate

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

Question 5 of 6
Intermediate

Why is correct sizing of the submersible pump important?

Question 6 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

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1: In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?
Soft start reduces over-pressure in your piping.
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1: In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?
It reduces the occurrence of water hammer in the pipes and minimises wear during start-up.
1: In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?
Soft start prevents the motor from getting warm.
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2: Which are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?
Groundwater lowering & Irrigation
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2: Which are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?
Domestic water supply & Groundwater lowering
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2: Which are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?
Domestic water supply & Irrigation
3: How does the integrated dry-running protection work?
It automatically restarts 3 minutes after shut down.
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3: How does the integrated dry-running protection work?
It prevents sand from damaging the pump.
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3: How does the integrated dry-running protection work?
It automatically shuts down the pump if water shortage is detected.
4: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Four times higher
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4: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Six times higher
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4: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Seven times higher
5: Why is correct sizing of the submersible pump important?
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.
5: Why is correct sizing of the submersible pump important?
Because too small a pump will pump the well dry.
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5: Why is correct sizing of the submersible pump important?
Because too big a pump will ruin the taps due to too high pressure.
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6: 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
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6: 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
6: 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
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