Question 1 of 6
Intermediate

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

Question 2 of 6
Intermediate

Is the SQE pump able to provide constant pressure?

Question 3 of 6
Intermediate

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

Question 4 of 6
Intermediate

Why is correct sizing of the submersible pump important?

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

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

Question 6 of 6
Intermediate

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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.
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1: Why is it important to protect the pump from over- and under voltage?
To minimise the power consumption.
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2: Is the SQE pump able to provide constant pressure?
No.
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2: Is the SQE pump able to provide constant pressure?
Yes.
3: Which are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?
Groundwater lowering & Irrigation
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3: 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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3: Which are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?
Domestic water supply & Irrigation
4: 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.
4: Why is correct sizing of the submersible pump important?
Because too small a pump will pump the well dry.
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4: 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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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
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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
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6: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Four times higher
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6: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Six times higher
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6: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Seven times higher