ESP Motor Sizing
Calculate motor current, power requirements, and recommended motor size for electric submersible pump installations.
Requirements & Constraints
Motor kW = HP * 0.7457 / (Efficiency/100)
Motor Amps = kW * 1000 / (sqrt(3) * V * PF)
Recommended HP = Required HP * 1.15
Results
Recommended Motor HP
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Motor Current
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Motor Power (kW)
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kVA Required
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Max Motor OD
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Motor Series
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Standard Motor Sizes Reference
| Series | OD (in) | Min Casing | HP Range | Fit? |
|---|
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How this was calculated
Motor power: kW = HP * 0.7457 / efficiency. Converts shaft HP to electrical input.
Motor current: 3-phase: Amps = kW * 1000 / (sqrt(3) * V * PF).
Motor OD: Must fit casing with 0.75" clearance for cooling flow.
Series: 375 (3.75" OD, 4.5" casing), 456 (4.56", 5.5" casing), 540 (5.40", 7" casing), 562 (5.62", 7" casing).
Need help with ESP design, artificial lift optimization, or production system analysis?
Book a free strategy call →Understanding ESP Motor Sizing
ESPs are the most widely used artificial lift for high-volume production. Motor sizing is critical: undersized motors overheat and fail, oversized motors waste capital and operate inefficiently. A 10-20% safety margin is standard.
The motor OD is constrained by casing size. Adequate clearance is essential for cooling flow. Standard motor series (375, 456, 540, 562) correspond to specific casing sizes. Insufficient cooling is the leading cause of ESP motor failure.
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