Von-Bach to Windhoek Water Transfer Scheme


Project Brief

User-Client: Namibia Water Corporation Ltd

Contractor: EMS Contractors

Contract Status:  Completed November 2014

Contract Value: N$ 200 million

•    Each of the three pump stations is equipped with four 1200 kW 690 V water-cooled motors powering 1800 m3/h HSC centrifugal pumps. (Fifth pump set to be installed in future)

•    A transformer, harmonic filter and Variable Speed Drive (VSD) for each individual pump set to power the 1200 kW motor. (4800 kW per pump station; 14,400 kW for the entire scheme)

•    Inlet and outlet manifolds with a diameter of 1,200 mm including branch pipes, valves and fittings.

•    Discharge manifolds equipped with Nitrogen charged surge relief valves.

•    All equipment housed in a new building with electric operated gantry.

•    Upgraded power supply lines and HT transformers by NamPower.

The completed Base Station near the Von Bach purification plant:

•    Main equipment makes are Danfos VSDs, Actom watercooled motors, KSB HSC centrifugal pumps.

•    Performance per pump station: 5400 m3/h against a maximum head of 170 mWH (Maximum total pumping head to Windhoek 540 mWH with total static head 346 mWH)

•    Three duty pump sets and one standby unit.


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