Question 1 of 6
Intermediate

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

Question 2 of 6
Intermediate

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

Question 3 of 6
Intermediate

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

Question 4 of 6
Intermediate

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

Question 5 of 6
Intermediate

Where is domestic groundwater extraction typically relevant?

Question 6 of 6
Intermediate

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

Question 6 of 6
Intermediate

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1: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Four times higher
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1: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Six times higher
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1: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Seven times higher
2: What is the most commonly used starting method for motors in 4” conventional pumps?
Direct on line
2: What is the most commonly used starting method for motors in 4” conventional pumps?
Star delta starters
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2: What is the most commonly used starting method for motors in 4” conventional pumps?
Auto transformer
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3: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 10 %
3: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 15 %
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3: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 20 %
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4: 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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4: 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
4: 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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5: Where is domestic groundwater extraction typically relevant?
In big cities.
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5: Where is domestic groundwater extraction typically relevant?
In remote areas where it is too costly to extend the municipal water supply to just a few houses.
5: Where is domestic groundwater extraction typically relevant?
In smaller and medium sized towns.
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6: 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.
6: Why is it important to protect the pump from over- and under voltage?
To avoid burning the house fuses.
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6: Why is it important to protect the pump from over- and under voltage?
To minimise the power consumption.
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