Wilo Twu 3-0303-hs-ecp Borehole Pump

Wilo product

23% 23 percent off rrp

Department:

Wilo Subson Submersible Pumps

Wilo Twu 3-0303-hs-ecp Borehole Pump

• Expanded flow capacity by increased rotation speed (up to 8400 rpm)
• Rewindable motor
• Integrated non-return valve
• Parts that come in contact with fluids are corrosion-free
• Including frequency converter (HS-E…: external, installed in the piping; HS-I…: built into the motor)
• Vertical and horizontal installation possible

WILO TWU 3-0303-HS-ECP BOREHOLE PUMP
Submersible pump for vertical or horizontal installation.

Hydraulics
Multistage submersible pump with radial impellers with sectional construction. Integrated non-return valve. All parts in contact with the fluid are made of corrosion-free materials.

Motor
Corrosion-free asynchronous motor for connection to the frequency converter supplied (HS-E…) or for direct connection to the mains power supply (HS-I…). Rewindable oil-filled motor with self-lubricating bearings, designed for high speeds up to 8400 rpm.

Frequency converter
External frequency converter or frequency converter integrated within the motor, for operation of the pump at speeds up to 8400 rpm, including the following functions:
• Soft starter
• Undervoltage, overvoltage and short-circuit protection
• Thermal overload protection of the motor and the frequency converter

The version "HS-E…“ with external frequency converter offers the following additional equipment features:

• Control function "CP“: Constant pressure
• Avoidance of frequent switching (cycling) by leakage monitoring
• Dry-running protection with automatic reset
• Change of direction of rotation
• Setting for max. flow and target pressure
• Pressure is shown on the display
• Settings, operating statuses and error messages are shown by LEDs or on the display.

The frequency converter always must be installed outside the fluid where it will be protected against overflows!
Control function "CP“: Constant pressure
Operation with the frequency converter means the rotation speed of the unit is adapted to the current water requirements automatically. As a result, the submersible pump always delivers a constant pressure.

Cooling
The motor is cooled by the fluid. The motor must always be operated in submerged state. The limit values for the max. fluid temperature and the minimum flow rate must not be exceeded.

In cases of vertical installation, a cooling jacket must be provided depending on the diameter of the bore. In cases of horizontal installation, a cooling jacket must always be provided .

The external frequency converter is also cooled by the fluid. For this the frequency converter must be installed directly in the piping outside the fluid (overflow-proof).

Manufacture:

Wilo

Notes:

Submersible pump:
Supply voltage:
HS-E…: 1~230 V, 50/60 Hz (connection to the AC mains supply by a frequency converter )
HS-I…: 1~230 V, 50/60 Hz (direct connection to the AC mains supply)
Immersed operating mode: S1
Fluid temperature: 3-35 °C
Minimum flow rate at motor: 0.08 m/s
Max. sand content: 50 g/m3
Max. number of starts: 30 /h
Max. immersion depth: 150 m
Protection class: IP 58
Pressure connection: Rp 1

Frequency converter for version "HS-E…“:
Mains connection: 1~230 V, 50/60 Hz
Output: 3~230 V/max.140 Hz/max.2.2 kW
Fluid temperature: 3-50 °C
Max. pressure: 8 bar
Protection class: IP X5
Connection: G 1¼

Material:

Hydraulic housing: Stainless steel 1.4301
Impellers: Polycarbonate
Hydraulics shaft: 1.4104 stainless steel
Motor housing: Stainless steel 1.4301
Motor shaft: 1.4305 stainless steel