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Product code: Borehole Motors

North Ridge 4" to 10" Borehole Pump Motors

Pump Type - Borehole

Drive - AC Electric

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DESCRIPTION

4” to 10” Submersible Borehole Pump Motors

Motor Power	0.37Kw to 129Kw
Sizes	4”, 6”, 8” and 10”
Operating Temperature	Up to 30°C as standard (Special motors up to 55°C)
Drive Options	Electric Motor

Our range of submersible borehole motors are available in sizes from 4” to 10” and motor powers from 0.37Kw to 129Kw. These motors are suitable to be coupled to our borehole pump ranges. Please check the required size, cable length, materials, voltage, frequency and motor power before selecting the appropriate motor.

PLEASE NOTE THAT ONLY THE BOREHOLE MOTOR IS SUPPLIED AS STANDARD, THE PUMP MUST BE ORDERED SEPERATELY. PLEASE FOLLOW THE LINK TO OUR BOREHOLE PUMP RANGE TO SELECT A SUITABLE PUMP.

The characteristics of each motor size are as follows:

P 4000 Series 4” Submersible Borehole Motors

• Liquid cooled, food grade oil

• Power from 0,55Kw to 7.5Kw

• High reliability with heavy duty construction and long operating life

• Suitable for use with variable speed drive. The recommended frequency ranges are 30 to 50 Hz or 40 to 60 Hz

• Stainless steel sleeve

• NEMA 4’’ coupling

• Stator winding in double copper enamelled F class wire

• IP68 protection

• Cooling liquid volume compensator

• Axial load on ball bearings

• Mechanical seal and sand guard

• Voltages available: single phase 230V +/- 10%, three phase 400V +/- 10% (Special Voltages available on request)

- Single phase: from 0.37Kw to 2,2Kw in 230 V 50 Hz

- Three phase: from 0.37 kW to 7.5Kw in 230 V 50 Hz

- Three phase: from 0.37 kW to 7.5Kw in 400 V 50 Hz

• Available in 50 Hz or 60 Hz

• Maximum starts per hour: 30

• Maximum Water temperature: 30°C

• Axial load 3000 N from 0.37 to 2,2Kw

• Axial load 6500 N from 3 to 7.5Kw

• Cable available in PVC, Neoprene and EPDM

P 600, P 800 and P 10000 Series 6”, 8” and 10” Submersible Borehole Motors

• Rewindable water filled

• Power from 4Kw to 129Kw

• High reliability with heavy duty construction and long operating life

• Suitable for use with variable speed drive. The recommended frequency ranges are 30 to 50 Hz or 40 to 60 Hz

• Stainless steel sleeve. The Upper and lower supports and base are in G 25 cast iron. Fully stainless steel versions are available in AISI 304, AISI 316, Duplex and AISI 904 on request

• NEMA coupling

• Thermoplastic protection of the copper windings are used as standard, PE2+PE winding wire for higher water temperatures are available on request

• Isolation class Y

• Protection IP68

• Rotor fitted with AISI 431 shaft, bearing bushes are in carbide (Available in BSPB15% bronze on request). Mitchell type thrust bearings, suitable to withstand the maximum load that comply with very high safety standards.

• Compensation diaphragm that is able to equalize inner and outer pressures and other variations due to temperature fluctuations during operation

• Available in 50 Hz and 60 Hz versions

- 6’’ motors from 4Kw to 37Kw in 230 V-1000 V 50 Hz or 60 Hz

- 8’’ motors from 30Kw to 92Kw in 230 V-1000 V 50 Hz or 60 Hz

- 10’’ motors from 75Kw to 129Kw in 230 V-1000 V 50 Hz or 60 Hz

• Maximum number of starts per hour: 6’’ 20 starts, 8’’ 15 starts and 10’’ 10 starts

• Water maximum temperature: 30°C, up to 55°C with PE2+PA windings

• Axial load 6’’: 16.000 N from 4 to 18.5Kw, 30.000 N from 22 to 37Kw

• Axial load 8’’: 50.000 N from 30 to 92Kw

• Axial load 10’’: 70.000 N from 75 to 129Kw

• Available with mechanical seal on request

• Available with Star-Delta starting on request

• Cable available in PVC, Neoprene and EPDM

Control boxes with various optional functions are available on request.

FAQS

What is a borehole?

A borehole is a deep and narrow hole made in the ground, it is typically drilled to locate water or oil. A borehole pump is placed down the hole and submerged in the water, they are used to extract water for agriculture, pressure boosting, irrigation, drinking etc.

How do I know what size pump is correct for my application?

Borehole pumps are sized to fit in specific boreholes. The width is measured in inches, typically; 4”, 5”, 6”, 8”, 10” and 12”. The width of the borehole, the depth of the borehole, the fluid, flow rate, pressure/head and power supply details are enough for a pump to be selected correctly.

What percentage sand content can this pump handle?

Sand handling capability changes depending on model. Please consult the data sheet of the specific model you require or contact a member of our sales team for assistance.

How do I know what pump materials are correct for my application?

Firstly, always check the compatibility of the materials available against the fluid being pumped. The main materials to check are the pump casing, impeller, o-ring, cable and mechanical seal. It may be that more than one material is suitable for your fluid and selection could be based on the application type. For instance; cast iron, bronze and stainless steel are all suitable for fresh water. If it is a simple transfer application, then the most cost-effective material cast iron will be best. However, if it is a sanitary application, then stainless steel or bronze are better choices.

Can this pump run dry?

No, definitely not! Submersible borehole pumps will incur damage even after short periods of dry running. The mechanical seal requires lubrication and cooling while the pump is operating. Without the presence of fluid, the mechanical seal will overheat and crack, and this may cause the pump to leak and fluid to enter the motor. There is also the possibility that the motor will burn out as this requires cooling by the fluid during operation. Our advice is to ensure that the pump and motor are always submerged during operation. There are two main ways to ensure the pump only operates in the event of submersion. Firstly, only the operator turns the pump on and off manually when they have a clear view of the borehole. Secondly, fit the pump with a float switch that will automatically turn the pump off once the fluid has dropped to a specific level in the borehole. If you think that dry running is inevitable, then please speak to us and we will try to select a more suitable pump for your application.