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KSB introduces highly efficient submersible motor pumps for wastewater applications

KSB Aktiengesellschaft, a German pumps manufacturer, has released the youngest generation of its Amarex KRT submersible motor pumps for the first time in Germany.

The pump type is used for handling all kinds of municipal and industrial wastewater at a maximum flow rate is 10,080m3/h and a head of 120m.

With 850kW, it offers the highest motor power available on the market as standard, according to KSB. 

The pump improves the operating reliability of KSB’s wastewater hydraulic systems and increases its hydraulic efficiency.

The impellers’ free passages comply with applicable standards, and to offer as broad a range of applications as possible, the new pumps are available with four different improved impeller types. 

With regard to low electricity consumption, electric drives of modern submersible motor pumps also play a key role, which is why the new pumps also offer a range of high-efficiency motors.

Depending on their system’s load profile, operators can choose a highly efficient motor variant which corresponds to the IE3 efficiency level for standardised motors in accordance with the IEC-60034-30 standard.

Such motors are particularly interesting for powerful pumps with a high start-up frequency.

Two bi-directional mechanical seals reliably protect the motor space against ingress of water, with a chamber filled with environmentally friendly oil ensuring cooling and lubrication of the mechanical seals even when gas-laden fluids have to be pumped.

Generously dimensioned ball bearings sealed for life support the stainless steel shaft.

KSB’s engineers placed special focus on the design of the cable gland, with individual conductors stripped, tinned, and sealed in resin to ensure the cable gland is absolutely watertight.

Even in the event of damage to the cable sheath or the insulation, thanks to this design the pump is protected against short circuits. 

To ensure that the pumps can be easily dismantled even after years of operation under tough conditions, all wetted screwed connections are made of stainless steel.

For transporting acid wastewater, KSB also supplies pumps made from high-grade stainless and acid-resistant duplex steel.