4” high speed deep well pump 6000 rpm 800 l/min 95 m 7500 W 320 - 450 V

Description of 4” multi-stage high speed deep well pump 6000 rpm 800 l/min 95 m 7500 W 320 - 450 V

Multi-stage centrifugal deep well pumps are designed for operation in drilled wells and open water reservoirs. Unlike other deep well pumps, the high speed well pumps have advanced energy-saving motors with permanent magnets and a frequency converter. As a result, the motor achieves 6000 rpm and a very high performance.

Motor design with permanent magnets and an inverter has many advantages over traditional pumps. These include:

• Energy saving due to high performance of the motor and pump. By achieving the same hydraulic parameters of pressure and performance, the high speed well pumps can be used with motor that are approximately 15-20% smaller than motors used in traditional pumps.
• Dry-running protection. The inverter electronics control the motor current draw. When dry run specific draw is detected, the motor is stopped. After a certain period of time, the pump tries to automatically restart, and its operation will continue after inflow is restored.
• Soft start resulting in no negative effect of hydraulic shock on the hydraulic system, significantly reduced mechanical wear of the motor and pump, no impact of inrush current on the electricity network.
• In traditional solutions, in order to achieve constant motor operating parameters, rapid starting is required. During starting, the motor draws a multiple of normal operating current during the first few seconds of operation (inrush current). This may result in voltage fluctuations in the electricity network affecting operation of other devices connected to this network, blown fuses, and burning of electrical connections in control units. Usually, hydraulic parameters of the pump are during starting instantaneously higher than nominal, which means that in the first seconds of operation water with higher parameters (pressure, flow) than nominal, designed for a given network is pumped into the system. This is called hydraulic shock. Repeated hydraulic shock leads to excessive wear of hydraulic components of the water supply system. Another disadvantage eliminated by soft start is the wear and tear of motor’s mechanical and electrical components. Hydraulic shocks increase the mechanical load on the motor and pump, and the high inrush current weakens the internal insulation of the motor.
• The motors can operate with relatively high voltage fluctuations 320-450V for three-phase motors
• Due to the smaller size of high speed well pumps compared to traditional pumps, drilling and installation costs are considerably lower.

Application

Supply of water to single-family houses and farms from deep well intakes. Irrigating gardens and orchards. Land drainage/dewatering. Water supply systems. Industrial applications

Operating conditions

• Maximum liquid temperature 35°C
• Maximum ambient temperature 35°C
• Class F Insulation
• Operating mode - continuous
• Protection - IP68

Materials

• Inlet/outlet: grey cast iron
• Housing: stainless steel AISI 304
• Shaft and rotor: stainless steel AISI 304
• Impeller: Noryl
• Venturi tube: Nory
• Mechanical seal: Ceramics/Sic/NBR
• Motor: oil cooling / with inverter
• Rotational speed of the electric motor: 2850 rpm