REXA SUPRA
Submersible pump
Transport sewage efficiently and economically. Ready for networking in digital wastewater management with Wilo-DDI.
- Non-clog and low-vibration hydraulics design ensures a high level of operational reliability
- A high level of hydraulic efficiency and optional IE3 motor technology (based on IEC 60034-30-1) keep operating costs low
- Extensive configuration options guarantee customised solutions
- Various Ceram coatings ensure a long service life in abrasive and corrosive fluids
Transport sewage efficiently and economically. Ready for networking in digital wastewater management with Wilo-DDI.
“Whether untreated or pre-treated sewage – the submersible pumps of the Wilo-Rexa SUPRA series have been developed for the various requirements in modern sewage pumping.
Vortex, single-channel or multi-channel impeller, die Wilo-Rexa SUPRA always provides a combination of clogging resistance and energy efficiency. As such, the Rexa SUPRA is ideal for safe and economical sewage transport.
In combination with the optionally available IE3 motors (in accordance with IEC 60034-30-1), the Wilo-Rexa SUPRA also reduces operating costs.
The Wilo-DDI can be integrated to meet the requirements of digital connectivity. The Wilo-Rexa SUPRA thus offers all the features of modern communication connectivity and makes everyday work really easy.”
Design
Liquid
For pumping in commercial areas of:
- Untreated sewage
- Sewage containing feces
- Process sewage
- Wastewater (with small amounts of sand and gravel)
Equipment/function
- Heavy-duty cast iron design.
- Sealing chamber to collect any leakage from the mechanical seal on the fluid side.
- Leakage chamber to collect any leakage from the mechanical seal on the motor side (motor dependent).
- Ex approval according to FM (motor dependent)
- Motor dependent monitoring devices:
- Winding temperature with bimetallic or PTC sensor.
- Leakage detection for sealing chamber, leakage chamber, and motor/terminal compartment.
Type Key
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Example: |
Wilo-Rexa SUPRA-M30-418A + T 34-6/50KEx-E3 |
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Hydraulics: |
Rexa SUPRA-M30-418A |
|
Rexa |
Submersible sewage pump |
|
SUPRA |
Series |
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M |
Impeller type:
|
|
30 |
Nominal diameter of discharge port (ANSI B16.1, Class 125)
|
|
41 |
Performance indicator |
|
8 |
Characteristic curve number |
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A |
Identifier for material and coating type |
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Motor: |
T 34-6/50KEx-E3 |
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T |
Motor design:
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|
34 |
Size |
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6 |
Number of poles |
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50 |
x10 = package length in mm |
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K |
Seal design:
|
|
Ex |
Ex approval in accordance with FM |
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E3 |
Motor efficiency class (derived from IEC 60034-30)
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Technical Data
- Mains connection: 3~460 V, 60 Hz
- Submerged operating mode: continuous duty (S1)
- Non-immersed operating mode:
- T motor: 15 minutes short-time duty (S2-15) or 30 minutes short-time duty (S2-30)
- FKT motor: continuous duty (S1)
- IP rating: permanently submerged (IP68)
- Insulation class: H
- Fluid temperature: 37 … 104 °F (3 … 40 °C)
- Max. immersion depth: 66 ft (20 m)
- Two-component epoxy coating as standard
Materials
- Hydraulic housing: ASTM A48 Class 35/40B (EN-GJL-250) or ASTM A536 70-50-05 (EN-GJS-500-7)
- Impeller: ASTM A48 Class 35/40B (EN-GJL-250) or ASTM A536 70-50-05 (EN-GJS-500-7)
- Motor housing: ASTM A48 Class 35/40B (EN-GJL-250) or ASTM A536 70-50-05 (EN-GJS-500-7)
- Seals:
- Static: Nitrile (NBR)
- On the fluid side: SiC/SiC
- On motor side: SiC/SiC or C/Cr
- Shaft: Stainless steel AISI 420 (1.4021)
Construction
Hydraulics
Discharge port with a horizontal flange connection. The maximum dry solids content is 8 % for vortex, single-channel, and two-channel impellers. For three-channel and four-channel impellers is the maximum dry solids content is 5 %. The follow impeller types are available:
- Vortex impeller
- Single-channel impeller
- Multi-channel impeller
T motor
Surface-cooled submersible motor without cooling system for wet installation. The housing parts transmit the waste heat of the motor directly to the fluid. The motor itself is dry. Permanently lubricated rolling bearings are used for the motor bearings. The power cable is longitudinally watertight and has bare cable ends. Depending on the motor size and the motor power, the motors can be installed dry and operate in short-time duty.
FK motor
Self-cooling submersible motor with active cooling system for wet and dry installation. The cooling system is filled with white medical grade oil and is unpressurized. An impeller on the motor shaft continuously circulates the coolant. The cooling flange transmits the waste heat to the pumped fluid. Permanently lubricated roller bearings are used for the motor bearings. The power cable is longitudinally watertight and has bare cable ends.
FKT motor
Self-cooling submersible motor with active cooling system for wet and dry installation. The cooling system is designed with a closed cooling circuit. The filled coolant is a mixture of water and glycol. An impeller driven by the motor shaft continuously circulates the coolant. The cooling system is unpressurized when cold. A built-in pressure relief valve limits the maximum operating pressure to 43 psi (3 bar). The cooling flange transmits the waste heat to the pumped fluid. Permanently lubricated roller bearings are used for the motor bearings. The power cable is longitudinally watertight and has bare cable ends.
HC motor
Self-cooling submersible motor with active cooling system for wet and dry installation. The cooling system is designed with a closed and hermetically sealed cooling circuit. The filled coolant is a mixture of water and glycol. A magnetically driven impeller on the motor shaft continuously circulates the coolant. The cooling system is unpressurized when cold. A built-in pressure relief valve limits the maximum operating pressure to 43 psi (3 bar). The cooling flange transmits the waste heat to the pumped fluid. Permanently lubricated roller bearings are used for the motor bearings. The power cable is longitudinally watertight and has bare cable ends.
Seal
All motors have a sealing chamber. The sealing chamber collects any leakage from the fluid side mechanical seal. Fluid and motor side seals are available in the follow designs, depending on the motor type:
- Design H: Mechanical seal for the fluid side, rotary shaft seal for the motor side
- Design G: Two independent mechanical seals
- Design K: Block seal cartridge with two independent mechanical seals
Operating fluids
All operating fluids are potentially biodegradable and not dangerous to the environment:
- White medical grade oil
- Water-glycol mixture (35 % glycol and 65 % water)
Motor efficiency classes (based on IEC 60034-30)
In addition to the standard motors, IE3 (Premium Efficiency) motors are also available. The IE3 motors are based on the same design as the standard motors. The motors are therefore identical in terms of equipment and function.
Scope of delivery
- Pump with permanent magnet motor
- External variable speed drive Wilo-EFC (ordered separately)
- Accessories as ordered
- Installation and operating instructions
Options
- Special voltages
- Pumping fluids up to 140 °F (60 °C)
- Motor dependent monitoring devices:
- Winding temperature monitoring with PTC sensors as an upgrade for motors with bimetallic sensors
- Sealing chamber and motor/terminal compartment leakage monitoring
- Motor bearing temperature monitoring
- Vibration monitoring
- Ceram coating for abrasive and corrosive fluids
- Digital Data Interface for easy integration into control systems and monitoring:
- Ethernet interface for easy connectivity
- Easy integration into existing control systems using ModBus/TCP or OPC UA
- Save daily time and decrease workload with convenient remote monitoring
- Approval according to CSA/CSA-Ex (on request)
Accessories
- Suspension unit for stationary wet installation
- Pump foot for portable installation
- Foot elbow for stationary dry installation
- Level controls
- External moisture probe for leakage detection
- Fixation sets with anchor bolts
- Slinging gear
- Switchgear and relays