Model: 4-Inch Submersible Motor
Power Output: 7.5 HP (5.5 kW)
Phase: 3-Phase
Construction: Cast Iron (CI) Housing
SKU: ACV4E-7.5HP
Specifications
Motor Diameter: 4 Inches (Standard NEMA mounting)
Voltage: 380-415 V / 50 Hz
Insulation Class: Class B (Designed for standard industrial thermal capacity)
Protection Rating: IP 68 (Full submersible protection)
Housing Material: Corrosion-resistant Cast Iron (CI) with epoxy protective coating
Shaft Material: Hardened stainless steel
Bearing System: Industrial-grade, heavy-duty radial and thrust bearings optimized for continuous submerged operation.
Key Features
Robust Cast Iron Construction: Provides superior structural rigidity and thermal dissipation properties compared to lighter materials, ensuring stability during long-term operation.
High-Duty Performance: Optimized for the higher torque demands of a 7.5 HP system, ensuring reliable output in standard borehole environments.
Reliable Sealing: Features high-grade mechanical seals designed to prevent water ingress and protect internal motor windings from contamination.
NEMA Compatibility: Interfaces seamlessly with standard 4-inch pump ends, allowing for easy integration into existing pumping infrastructure.
Installation and Use Notes
Electrical Protection: A professional 3-phase control panel equipped with thermal overload protection and phase imbalance monitoring is strictly required to prevent winding damage. Calibrate the overload relay precisely to the motor’s Full Load Amperage (FLA).
Cooling Requirements: Maintaining a minimum flow velocity of 0.08 m/s past the motor casing is necessary to prevent overheating. In cases where the borehole is significantly larger than the motor, a flow induction shroud is required.
Handling: Always use the motor’s integrated lifting eyes during installation. Never support the pump or motor weight by the power cable, as this can breach the cable seal and lead to electrical failure.
Cable Splicing: Use only professional-grade, resin-encapsulated submersible splice kits to ensure a fully watertight connection for the power leads.