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Borets manufactures submersible induction oil-flooded electric motors in 4.06, 4.61 and 5.12 in. (103, 117 and 130 mm) housing OD sizes, with capacity of 10.7 to 603.5 hp (8 to 450 kW).
More than 100 modifications of the motors are manufactured which enables to select the optimal capacity for each specific pump and ensure reliable and high efficiency ESP system operation with minimum electric power losses.
Operational conditions of the pumps
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Ambient temperature, °F (°C)
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not more than 275 (135), 302 (150)*
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Ambient pressure, psi (kg / cm 2)
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up to 4267 (300)
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Solids particles content in formation fluid, g / l
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up to 1
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Hydrogen sulfide (H2S) content, g / l
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up to 1.25
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* - special order
Encryption of the electric motor coding
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X Design type:
No symbol – standard design type
1 - electric motor has different supply voltage than standard manufacturing type
2 - electric motor with DHS "BP-103" made by JSC "IRZ", Izhevsk
3 - electric motor with DHS "SKAD-2002-PD" made by BelNIPINeft", Gomel
4 - all steel motors (no bronze lamination)
7 - electric motor with DHS "Elekton-TMS" made by JSC "Elekton", Raduzhniy
8 - electric motor with thrust bearing made of ceramic materialsall steel motors (no bronze lamination). All 130 mm motors are supplied with ceramic thrust bearings.
9 - electric motor with Borets DHS "SPT-1BP" EDB Submersible electric motor manufactured by Borets X No symbols – single-section version
S – tandem motor version X Design type:
No symbols – standard (design types can be combined)
Ò – high-temperature
Ê – corrosion-resistant XXX Power, kW XXÕ Housing diameter, mm ÕÕ Reconditioning encryption Ì1, Ì2 etc.(can be unavailable) B5 Climatic design type and allocation category X Direction of shaft rotation:
No symbols – CW (clockwise)
L – CCW (counter-clockwise)
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Examples of coding for various submersible electric motor types:
EDBÒ32-117Â5 in accordance with TU 3381-001-00217780-01 – Electric motor manufactured by Borets, single-section, high-temperature resistant, capacity of 42.9 hp (32 kW), size 4.61 in. (117 mm).
9.4EDBSÒÊ250-130Â5L in accordance with TU 3381-001-00217780-01 – Electric motor manufactured by Borets, tandem, high-temperature resistant, capacity of 335.3 hp (250 kW), size 5.12 in. (130 mm) with downhole sensor “SPT-1BP” with CCW direction of shaft rotation and the stator with a unified magnetic conductor.
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Some of the design features of the motors:
- stator lamination packs made of electrical steel and interlaced with non-magnetic bronze packs
- stator laminations have a closed slot configuration
- for stator slot insulation Teflon tubing is used
- Y-connection of stator phases with lead-out neutral wire
- the motor leads are high temperature
- radial bearings have retaining pins preventing from cranking inside the housing
- the cable socket is made of Teflon.
The motor is equipped with the fine oil filter manufactured using powder metallurgy technology. Motor manufacturing technology includes vacuum stator varnishing with high-temperature varnish. The coincident rotation speed is 3000 rpm at frequency 50 Hz.
For the manufacturing of Borets motors, technology and specialized tools from the worlds leading manufacturers are used. Proven design, high-tech modern equipment, reliable materials, qualified personnel and a step by step quality control system allows Borets to manufacture motors with a prolonged run life capable to work at the ambient temperature of up to 275 °F (135 °Ñ).
Motor lead extensions, with a pothead construction ensuring enhanced reliability, are able to operate in temperatures of up to 450 °F (230 °Ñ) and are supplied with the motors.
All types of motors can be manufacturing in different sizes with the following modifications:
- standard – marked EDB (to withstand temperature of up to 230 °F (110 °Ñ)
- heat-resistant – marked as EDBÒ (for temperature up to 275 °F (135 °Ñ)
- corrosion-resistant – the housings are plated with corrosion-resistant coating.
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