# Revision history [back]

### Syria generator sizing for water pumps

Working in a part of Syria to provide water to a population of approximately 150,000 through support of the water units. This is being done by providing generators to power several large powered submersible and horizontal pumps.

We have a pumping station which currently has a 675kVA generator, which is not enough to pump the required amount of water. As such, we want to confirm the size of generator that would be required to provide the required amount of water.

The station has 4 submersible pumps and 4 horizontal pumps, for which their capacities are the following:

All of the four submersible pump capacities are 110kVA. However, their current pulling differs according to the height of water in the level. As such, the currents are 150A, 100A, 150A and 135A.

The capacities of the four horizontal pumps are:

- 2 x 195kVA, 295A
- 165kVA, 250A
- 40kVA, 95A

Calculations have shown that, assuming the generators were worked to their full capacity, that the total power would be 1035kVA, as such, assuming that the generator could be loaded with an average of 70% of its capacity, a generator providing 1035/0.7= 1480kVA would be required.

However, taking the currents into account, a total of 1470A would be required, which, when assuming a power factor of 1.73, a voltage of 380V and 70% loading, gives a required generator power of (1.73*380*1470)/0.7 = 1380kVA.

We are aiming to pump approximately 5000m3/day as such I wanted to be 100% sure that we are getting these calculations right. I am not an electrical engineer so wanted to check if there are any factors which have not been included in these calculations. This are the figures and calculations that we have got from our guys within Syria.

Many thanks for the potential help.

John

2 | retagged |

### Syria generator sizing for water pumps

Working in a part of Syria to provide water to a population of approximately 150,000 through support of the water units. This is being done by providing generators to power several large powered submersible and horizontal pumps.

We have a pumping station which currently has a 675kVA generator, which is not enough to pump the required amount of water. As such, we want to confirm the size of generator that would be required to provide the required amount of water.

The station has 4 submersible pumps and 4 horizontal pumps, for which their capacities are the following:

All of the four submersible pump capacities are 110kVA. However, their current pulling differs according to the height of water in the level. As such, the currents are 150A, 100A, 150A and 135A.

The capacities of the four horizontal pumps are:

- 2 x 195kVA, 295A
- 165kVA, 250A
- 40kVA, 95A

Calculations have shown that, assuming the generators were worked to their full capacity, that the total power would be 1035kVA, as such, assuming that the generator could be loaded with an average of 70% of its capacity, a generator providing 1035/0.7= 1480kVA would be required.

However, taking the currents into account, a total of 1470A would be required, which, when assuming a power factor of 1.73, a voltage of 380V and 70% loading, gives a required generator power of (1.73*380*1470)/0.7 = 1380kVA.

We are aiming to pump approximately 5000m3/day as such I wanted to be 100% sure that we are getting these calculations right. I am not an electrical engineer so wanted to check if there are any factors which have not been included in these calculations. This are the figures and calculations that we have got from our guys within Syria.

Many thanks for the potential help.

John

3 | retagged |

### Syria generator sizing for water pumps

Working in a part of Syria to provide water to a population of approximately 150,000 through support of the water units. This is being done by providing generators to power several large powered submersible and horizontal pumps.

We have a pumping station which currently has a 675kVA generator, which is not enough to pump the required amount of water. As such, we want to confirm the size of generator that would be required to provide the required amount of water.

The station has 4 submersible pumps and 4 horizontal pumps, for which their capacities are the following:

All of the four submersible pump capacities are 110kVA. However, their current pulling differs according to the height of water in the level. As such, the currents are 150A, 100A, 150A and 135A.

The capacities of the four horizontal pumps are:

- 2 x 195kVA, 295A
- 165kVA, 250A
- 40kVA, 95A

Calculations have shown that, assuming the generators were worked to their full capacity, that the total power would be 1035kVA, as such, assuming that the generator could be loaded with an average of 70% of its capacity, a generator providing 1035/0.7= 1480kVA would be required.

However, taking the currents into account, a total of 1470A would be required, which, when assuming a power factor of 1.73, a voltage of 380V and 70% loading, gives a required generator power of (1.73*380*1470)/0.7 = 1380kVA.

We are aiming to pump approximately 5000m3/day as such I wanted to be 100% sure that we are getting these calculations right. I am not an electrical engineer so wanted to check if there are any factors which have not been included in these calculations. This are the figures and calculations that we have got from our guys within Syria.

Many thanks for the potential help.

John

4 | retagged |

### Syria generator sizing for water pumps

The capacities of the four horizontal pumps are:

- 2 x 195kVA, 295A
- 165kVA, 250A
- 40kVA, 95A

*380*1470)/0.7 = 1380kVA.

Many thanks for the potential help.

John