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
KSB’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
are 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 |
0
▪ Volute casing pump
▪ Horizontal installation
▪ Back pull-out design
▪ Single-stage
▪ Meets the technical requirements to ISO 5199
▪ Dimensions and ratings to ISO 2858 complemented by pumps of nominal diameters DN 25, DN 200 and above
Type of impeller Closed / Radial
Type of installation Long- coupled
Maximum drive rating 90 kW
Impeller material (EN standard) 1. 4593 / 1.4517 / A995GRCD4MC;GP240GH+N/ A216GRWCB;JL1040/ A48CL35
Type of bearing Ball bearings
Drive frequency 50 Hz / 60 Hz
Maximum speed of rotation 4 1/min
Maximum flow rate 1. 160 m³/h
Maximum discharge-side pressure 25 bar
Casing material (EN standard) DUPLEX STAINLESS STEEL 1. 4593/;GREY CAST IRON JL1040 / A48CL3;STAINLESS STEEL 1.4408 / A743;STEEL GP240GH+N/ A216 GR WCB
No. of impeller entries Single entry
Integrated control system Yes
Minimum flow rate 2 m³/h
Suction characteristics Non- priming
Drive voltage Low voltage
Pull-out design Yes
Pump set location Dry installed
Heatable Yes
Max. permissible fluid temperature 400 °C
Main applications Industry and process engineering; Oil / Gas
Type of casing Volute casing
Type of connection Flange
Type of lubrication Grease / Product lubrication
Type of drive Electric motor
Installation position Horizontal
Level indication Grease lubrication
Shaft material (EN standard) ALLOY STEEL 1. 7709+QT+SR;DUPLEX STAINLESS STEEL 1.4462;STEEL C45+N
Type of coupling Direct
Shaft seal type Gland packing; Mechanical seal
Maximum head 162, 00 m
Maximum rated pressure (discharge) PN25
Minimum head 2, 00 m
Nozzle position End suction
Casing partition Radially split
Performance range: Flow up to 20 gpm
Head up to 139 ft
System pressure: Up to 109 psi
Inlet pressure: Max. 45 psi
Suction lift: Max. 26 ft
Liquid temperature: 32°F to +95°F
Ambient temperature: 32°F to +113°F
Nominal voltage range: 1 x 110 - 120 V or
1 x 220 - 240 V
Weight: 29 pounds
Dimensions: 12.6 x 22.4 x 8.7 (in)
Thermal protection Yes
Features and benefits