Question 1 of 6
Intermediate

Which protection features does the SQE have?

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

Why must the pump unit be installed below the dynamic water table?

Question 4 of 6
Intermediate

How long did it take to replace the pump with a Grundfos SQ?

Question 5 of 6
Intermediate

What is the benefit of a slow increase in speed?

Question 6 of 6
Intermediate

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

Question 6 of 6
Intermediate

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1: Which protection features does the SQE have?
Voltage handling, soft start, dry-running protection and overload protection.
1: Which protection features does the SQE have?
Protection against the well running dry.
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1: Which protection features does the SQE have?
The SQE does not have any protection features.
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2: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Four times higher
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2: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Six times higher
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2: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Seven times higher
3: Why must the pump unit be installed below the dynamic water table?
So you are sure to minimise your power bill.
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3: Why must the pump unit be installed below the dynamic water table?
To avoid the risk of dry-running during operation.
3: Why must the pump unit be installed below the dynamic water table?
To maintain a stable pressure in the system.
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4: How long did it take to replace the pump with a Grundfos SQ?
30 minutes
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4: How long did it take to replace the pump with a Grundfos SQ?
60 minutes
4: How long did it take to replace the pump with a Grundfos SQ?
90 minutes
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5: What is the benefit of a slow increase in speed?
It keeps the motor current low
5: What is the benefit of a slow increase in speed?
It keeps pump movements at a minimum
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5: What is the benefit of a slow increase in speed?
It removes the need for motor contactors
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6: 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.
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6: The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?
In installations that require constant pressure.
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6: 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.