Pump Wire-to-Water Efficiency

Water HP, brake HP estimate, and wire-to-water % with good/ok/degraded category.

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Formula and source

Water HP WHP = (GPM × TDH) / 3960. Brake HP estimate BHP = motor_kW × 1.341 × motor_eff × drive_eff. Wire-to-water % = WHP / motor_HP × 100. Categories: ≥ 65% good, ≥ 50% ok, < 50% degraded.

Hydraulic Institute (HI) standards by name; ANSI/HI 14.6 (Rotodynamic Pumps for Hydraulic Performance Acceptance Tests) by name.

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