Question 1 of 6
Intermediate

What is the most commonly used starting method for motors in 4” conventional pumps?

Question 2 of 6
Intermediate

What happens if the static water level is too low?

Question 3 of 6
Intermediate

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

Question 4 of 6
Intermediate

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

Question 5 of 6
Intermediate

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

Question 6 of 6
Intermediate

How does the integrated dry-running protection work?

Question 6 of 6
Intermediate

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1: What is the most commonly used starting method for motors in 4” conventional pumps?
Direct on line
1: What is the most commonly used starting method for motors in 4” conventional pumps?
Star delta starters
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1: What is the most commonly used starting method for motors in 4” conventional pumps?
Auto transformer
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2: What happens if the static water level is too low?
The pump overheats
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2: What happens if the static water level is too low?
The water level is brought down below the inlet of the pump
2: What happens if the static water level is too low?
The motor shuts down
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3: 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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3: 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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3: 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.
4: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 10 %
4: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 15 %
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4: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 20 %
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5: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Four times higher
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5: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Six times higher
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5: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Seven times higher
6: How does the integrated dry-running protection work?
It automatically restarts 3 minutes after shut down.
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6: How does the integrated dry-running protection work?
It prevents sand from damaging the pump.
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6: How does the integrated dry-running protection work?
It automatically shuts down the pump if water shortage is detected.