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Lowara GS – Submersible borehole pump 4″ with oil-filled motor – rewindable – 6GS40RT-4OS – 4kW 5,5Hp 3x400V 50Hz


Model: 6GS40RT-4OS
Power Supply: 3x400V 50Hz
[Kw]: 4
[Hp]: 5,5
Flow Rate Q [l/min]: 0 – 140
Head H [m]: 211 – 71,7
Number of stages: 33
MEI ≥: 0,4
Pump Body: AISI304
Impeller: Technopolymer
Ø Outlet: 1.1/4″
Ø Pump: 99 mm

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PUMP
Delivery: up to 21 mc/h at 2900 rpm.
Head: up to 340 m at 2900 rpm.
Maximum pump overall diameter, cable cover included: 99 mm.
Maximum immersion depth: 150 m with 4OS motor and 300 m with L4C motor.
Maximum permissible quantity of sand: 150 g/mc.
1GSL – 2GS – 4GS – 6GS versions: Rp 1.1/4″ delivery port.
8GS – 12GS – 16GS versions: Rp 2″ delivery port.
Motor power: from 0,37 to 7,5kW.

MOTOR
4OS single-phase version: from 0,37 to 2,2kW 220-240V 50Hz.
4OS three-phase version: from 0,37 to 7,5kW 380-415V 50Hz.
L4C single-phase version: from 0,37 to 4kW 220-240V 50Hz.
L4C three-phase version: from 0,37 to 7,5kW 380-415V 50Hz.
Maximum supply voltage variations: ±10% (4OS), ±6% (L4C).
Maximum number of starts for hour evenly distributed: 30 for 4OS and 40 for L4C.
Horizontal operation: 4OS up to 2,2kW – L4C up to 7,5kW.
Maximum temperature of water in contact with motor: 35°C

CONSTRUCTION CHARACTERISTICS
PUMP
Abrasion-resistant construction.
The front wear ring, combined with the floating impellers, ensures optimum resistance to sand abrasion.
The upper and lower supports are made of precision-cast stainless steel, ensuring resistance to corrosion, durability and a sturdy coupling to the motor.
The hexagonal pump shaft guarantees an effective impeller driving.
Stainless steel non-return valve integrated in the head
The e-GS series pumps can be coupled to either the 4OS or L4C motors.

Lowara 4OS series
4″ Submersible oil filled rewindable motors.
SPECIFICATIONS
Stainless steel outer sleeve.
Shaft extension and coupling
dimensions to NEMA standards.
Class insulation: 155 (F).
Protection class: IP68.
Internal fluid suitable for contact with foodstuffs.
Strong and durable compensating bellows.
Axial load supported by angular bearings.
Mechanical seal protected by sand guard.
Maximum immersion depth: 150 m.
Suitable for both vertical / horizontal installations
Maximum number of starts for hour at regular intervals: 30 for direct start; 20 for impedance start.
Maximum water temperature: 35°C.
Max. temperature applies to motors working in a installation capable of delivering a flow of water around the motor jacket of at least 0,08 m/s.
Water pH: from 4 to 8.
Axial thrust:
3000 N from 0,37 to 2,2kW;
6500 N from 3 to 7,5kW.
Versions:
– Single-phase: from 0,37 to 4kW 220-240 V ±6%, 50 Hz
– Three-phase: from 0,37 to 7,5kW 380-415 V ±6%, 50 Hz

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