Supply and Installation for Pumps at 14km Away from Power Source

looks like they hired the wrong guy

Here's someone who might, but they will want money.

Consultants in Uganda - List of Consultants companies

@lyn: Thumps up for your advice given to him. It should have been a challenge for him to sit with Consultants and develop a design. This request to "design" seems to show a severe lack in Initiative of his part.

Wonder if the OP got his television fixed?

Well you will either need a bunch of power line poles and cable or a underground line system.

Overhead power lines will be cheaper but you may have possible future issues with power theft or the like if you use that method.

Relating to sizing things the step down power transformers for each pump unit should have an equal or larger KVA power rating as the pump motors.

The first stage is to size the pumps, the pipelines and the power required to deliver the water, which activity falls outside the Electrical Engineering section.

One option is "40 x 20T tanker trucks per day", for example.

I'd consult a Roman

To help design the pump size, we need to know the total height difference between the water source surface level and the factory site (destination.

Also, as a remark: the first pump should be at the water source and not at the factory site. therefore, from the water source, the 1st pump, then every 3.5 km a pump, the last pump being 3.5 km from the factory. As Tornado pointed out, the total flow will only be 150 gpm or 556 L/min. The pump will be relatively small size and could be served by a diesel or petrol pump with a fuel tank reserve for, let us say a week running?. this is definitely much cheaper than the 11KV line of 14 km with the drop down transformers at each point etc. Not worth it! Better stick with low voltage of 3phase 400V line if you insist on an electric pump ( In your area, the risk of cable steeling will be a major problem ...?).

Dear Mr.charles caroly,

You have referred 800,000 Litres in 24 Hrs. and this quantity works out to 9.259 Litres/Sec., which is the capacity/for the 4 pumps put together - and per pump it works out to 2.314 Litres/Sec per pump. I take this as the quantity to be recd. at the receiving end.

You have not indicated the following. 1. The physical Elevation through which the water is to be lifted/pumped. 2. The leakage percentage of water permissible.

Normally leakage of water permissible is 0.5% per KM, and in your case it works out to 7% over the required target. This is to be added for arriving at the nett LPS per pump. If Head is known you can calculate WHP of the pump and devide this WHP by 0.62 which will give the HP of the motor required and select the nearest Higher HP for the Motor.

Based on the HP of the Motor, the current will be calculated. You may have to lay 22 KV LINE as 11 KV line will have more voltage drop.

Pl. furnish the Head and I can calculate the power per pump required OR you your self can calculate.

DHAYANANDHAN.S