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Wilo-Rexa SUPRA-C | Wilo

Wilo-Rexa SUPRA-C

Transporting sewage economically

Your advantages
Wilo-Rexa SUPRA

Transporting sewage economically

Whether untreated sewage or pre-treated sewage – the submersible pumps of the Wilo-Rexa SUPRA-C series with single-channel hydraulics are developed for sewage pumping requirements in modern water management. The Wilo-Rexa SUPRA-C is ideally suited for this application due to its combination of clogging resistance and energy efficiency. In combination with the optionally available IE3 motors*, the Wilo-Rexa SUPRA-C offers very high efficiency and thus reduces operating costs.

With the optionally available Wilo-DDI, the Wilo-Rexa SUPRA-C can be directly integrated into the system control and monitoring via Ethernet.


Your advantages

  • Lower operating costs thanks to the high level of hydraulic efficiency (up to 80 %) and optional IE3 motor technology (based on IEC 60034-30-1)
  • High operational reliability as the pump has a non-clog hydraulic design
  • Simple integration into the system control and monitoring of the pump with the optional Wilo-DDI
  • Long service life in abrasive and corrosive fluids thanks to various Ceram coatings
  • Customised solutions thanks to extensive configuration options
Series description

Design

Submersible sewage pump with and without active cooling system for continuous duty in the stationary and portable wet well installation, as well as for stationary dry well installation.

Application

Pumping of

  • Untreated sewage with long-fibre components
  • Sewage containing faeces
  • Process water
  • Wastewater

Equipment/function

  • Heavy-duty version made of grey cast iron
  • Surface-cooled motor with sealing chamber
  • Self-cooling motor with sealing chamber and active cooling system
  • Motor-dependent monitoring devices:
    • Winding temperature using bimetallic strip or PTC sensor
    • Moisture monitoring in the sealing chamber and motor/terminal room
    • Leakage chamber monitoring

Typekey

Example:

Wilo-Rexa SUPRA-C20-544A + FKT 20.2M-4/33GEx-E3

Hydraulics:

SUPRA-C20-544A

SUPRA

Submersible sewage pump

C

Single-channel impeller

20  

x10 = pressure connection nominal diameter, e.g. DN 100

54

Performance indicator

4

Characteristic curve number

A

Material version (A = standard)

Motor:

FKT 20.2M-4/33GEx-E3

FK

Motor type:

  • T = surface-cooled motor without cooling system
  • FK, FKT = self-cooling motor with active cooling system

20.2M

Size

4

Number of poles

33

x10 = package length in mm

G

Seal version:

  • H = rotary shaft seal/mechanical seal
  • G = two separate mechanical seals
  • K = block seal cartridge with two mechanical seals

Ex

Ex-rated

E3

IE-3Motor

Technical data

  • Mains connection: 3~400 V, 50 Hz
  • Submerged operating mode: S1
  • Non-immersed operating mode: S1 or S2
  • Protection class: IP68
  • Insulation class: H
  • Fluid temperature: 3…40 °C, higher temperatures on request
  • Free ball passage of 45...130 mm
  • Max. immersion depth: 20 m

Materials

  • Housing components: EN-GJL or EN-GJS
  • Impeller: EN-GJL or EN-GJS
  • Static gaskets: NBR or FPM
  • Fluid-side seal: Mechanical seal made of SiC/SiC
  • Seal on the motor side:
    • Rotary shaft seal NBR
    • Mechanical seal made of SiC/SiC or carbon ceramic
  • Shaft end: Stainless steel 1.4021

Construction

Submersible sewage pump as submersible monobloc unit for stationary wet well and dry well installation as well as portable wet well installation

Hydraulics

The outlet on the pressure side is designed as horizontal flange connection. The maximum possible amount of dry matter is 8 %. Single-channel impellers are used.

Motor

Efficient motor technology for surface-cooled and self-cooling motors are available.

Surface-cooled motors (T motor) do not have a cooling system of their own and emit their heat directly to the surrounding fluid via the housing parts. The motors can therefore be used in immersed state for continuous duty. Depending on their size, they can also be used in non-immersed state for short-time duty.

The self-cooling motors (FK, FKT motors) have an active cooling system and transfer their waste heat to the fluid being pumped by means of an integrated heat exchanger. Therefore, these motors are suitable for continuous duty in immersed and non-immersed condition, and therefore also for dry well installation.

All motors have a sealing chamber that protects the motor from fluid ingress. It can be accessed from the outside and can optionally be monitored with a rod electrode. All filling fluids used are potentially biodegradable and environmentally safe.

The connection cable has bare cable ends and the length is customer specific. The cable inlet on T and FKT motors is longitudinally watertight.

Seal

Fluid-side and motor-side sealing is possible in the following versions depending on the motor type:

  • Version H: Mechanical seal for the fluid side, rotary shaft seal for the motor side
  • Version G: Two independently-acting mechanical seals
  • Version K: Block seal cartridge with two independently acting mechanical seals

High efficiency motors

In addition to the standard motors, high-efficiency motors with IE3 classification (in accordance with IEC 60034-30) are also available. As these have the same basis as the standard motors, they have the same features and functions. This means that the same hydraulic systems are also available.

Ex rating

The motors are available with Ex rating in accordance with ATEX and FM.

Scope of delivery

  • Submersible sewage pump
  • Connection cable with bare cable end
  • Fitted accessories
  • Operating and maintenance manual
Documents

Installation and operating instructions

Wilo Motor FK 17.1, FK 202, FK 34, FK 42 + EMU FA, Rexa SUPRA, Rexa SOLID

Article Number 6074704
Edition 2019-01
Page format 209.9 x 297.0 mm
Number of pages 52
PDF (3 MB)

Wilo Motor FKT 20.2, 27.1, 27.2: EMU FA, Rexa SUPRA, Rexa SOLID

Article Number 6086014
Edition 2019-10
Page format 209.9 x 297.0 mm
Number of pages 60
PDF (3 MB)

Wilo Motor FKT 20.2, 27.1, 27.2: EMU FA, Rexa SUPRA, Rexa SOLID

Article Number 6088784
Edition 2019-10
Page format 209.9 x 297.0 mm
Number of pages 108
PDF (4 MB)

Wilo Motor T 12 ... 72 + EMU FA, Rexa SUPRA, Rexa SOLID

Article Number 6067561
Edition 2019-01
Page format 209.9 x 297.0 mm
Number of pages 64
PDF (5 MB)

Wilo Motor T 17.3, 20.2: EMU FA, Rexa SUPRA, Rexa SOLID

Article Number 6086012
Edition 2019-10
Page format 209.9 x 297.0 mm
Number of pages 56
PDF (3 MB)

Wilo Motor T 17.3, 20.2: EMU FA, Rexa SUPRA, Rexa SOLID

Article Number 6086016
Edition 2019-10
Page format 209.9 x 297.0 mm
Number of pages 104
PDF (4 MB)

Wilo DDI-I

Article Number 6086017
Edition 2020-12
Page format 209.9 x 297.0 mm
Number of pages 104
PDF (8 MB)

Wilo DD-I

Article Number 6088785
Edition 2020-12
Page format 209.9 x 297.0 mm
Number of pages 196
PDF (12 MB)

General overview

General Overview 2022 - International version

Edition 2022
Page format 209.9 x 297.0 mm
Number of pages 78
PDF (38 MB)

Certificate REACH

REACH Regulation

Edition 2021-05
Page format 209.9 x 297.0 mm
Number of pages 4
PDF (212 KB)