single-stage submersible pump

KSB-Amarex KRT - G, G1, G2, GH

Amarex KRT with highly efficient submersible motors

With highly efficient IE3* submersible motors the pumps of the Amarex KRT® series are a true innovation on the market. KSB’s extremely energy-efficient motors can be integrated into pump stations as standard. The pump sets can be supplied with or without explosion protection

Amarex_KRT-EKSB’s in-house development work has enabled these pump sets to be mechanically and electrically optimised for the special requirements of waste water transport. The Amarex KRT motors’ electrical and magnetic design fulfils the requirements of the IE3* efficiency class up to a drive rating of 850 KW.

Combining these motors with a wide range of hydraulic systems for handling waste water enables KSB to provide pump sets offering superb efficiency and dependable operation for every application. Save energy effectively

Design

Vertical, single-stage submersible motor pump in close-coupled design, various impeller types, for wet or dry installation, stationary and transportable version. Design to ATEX.

Applications

Handling of all types of abrasive or aggressive waste water in water and waste water engineering as well as industry, especially untreated sewage containing long fibres and solid substances, fluids containing gas / air, as well as raw, activated and digested sludge; sea water desalination.

 

Pump sets of installation types P and S

KSB-Amarek-KRT-Guide railare designed for continuously submerged operation. The motor is cooled by the fluid
handled on the motor surface. Operation with the motor outside the fluid handled is
possible for short periods.

Pump sets of installation type K

are suitable for continuous operation with the motor outside the fluid. Cooling is
effected by means of air convection.

Operating data

Capacity Q up to 6200 m3/h, 1700 l/s
Head H up to100 m
Motor power P2 from 0,8 kW to 320 kW
Temperature of
pumped liquid t up to 60 oC
Enclosure type IP 68 to EN 60 529 / IEC 529
additional flameproof versions ATEX II 2G T3 or T4

Drive

Three-phase asynchronous motor
400 V (variants: 230 V, 500 V, 690 V)

Material

Standard version of cast iron
Material variants of wear-resistant chilled iron and
corrosion-resistant duplex stainless steel

 

Overview of technical data

Type of bearing Rolling element bearings
Casing partition Radially split
Cutter Yes
Drive frequency 50 Hz / 60 Hz
Type of drive Electric motor
Drive voltage Low voltage
Connection to power supply < 690 V, 3~
Explosion protection ATEX II 2 G T3; ATEX II 2 G T4
Impeller material (EN standard) JN 3029; JL 1040;1.4517
Type of installation Close- coupled
Type of coupling None
Type of lubrication Grease lubrication
Max. permissible fluid temperature 60 °C
Nozzle position End suction
Maximum rated pressure (discharge) PN 16
Pump set location Dry installed; Wet well
Shaft material (EN standard) C45+ N;1.4021
Suction characteristics Non- priming
Type of casing Volute casing
Type of impeller Open; Closed;Multi-vane impeller;Free flow impeller;Radial;Single-vane impeller;Diagonal;Cutter
Type of connection Flange
Casing material (EN standard) 1. 4517;JL 1040;JN 3029
eClass assignment 36410101; 36410103
Free passage 240 mm
Maximum head 120, 00 m
Minimum head 1, 00 m
Installation position Horizontal or vertical
Shaft seal type Mechanical seal
Main applications Energy; Water;Industry and process engineering;Mining / Dredges;Waste water / sewage;Building services
Casing material Cast iron
Maximum discharge-side pressure 12 bar
Maximum drive rating 850 kW
Type of installation 00; Transportable;Stationary
Maximum flow rate 10. 080 m³/h
Minimum flow rate 0, 60 m³/h
Maximum speed of rotation 3. 500 1/min

 

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