Model: 4-Inch Submersible Water-Filled (WF) Motor
Power Output: 5.5 HP (4 kW)
Phase: 3-Phase
Construction: Cast Iron (CI) Housing
Series: V-CI (Standard Industrial)
Specifications
Motor Diameter: 4 Inches (Standard NEMA mounting)
Voltage: 380-415 V / 50 Hz
Insulation Class: Class F (Designed for high-thermal stress and reliable performance)
Protection Rating: IP 68 (Full submersible protection)
Housing Material: Industrial-Grade Cast Iron (CI) with anti-corrosive epoxy coating
Cooling/Lubrication: Water-filled design using non-toxic, food-grade liquid for eco-friendly internal cooling and bearing lubrication
Shaft Material: Hardened stainless steel
Key Features
Water-Filled Efficiency: Utilizes the surrounding well water for optimal internal cooling, which is ideal for environmentally sensitive applications.
Robust Cast Iron Construction: Provides superior structural rigidity and vibration damping, ensuring long-term stability during continuous 5.5 HP operation.
Industrial Reliability: Engineered for consistent performance in irrigation, municipal, and commercial water supply systems.
Standardized Interface: Compatible with industry-standard 4-inch NEMA pump ends for straightforward assembly.
Installation and Use Notes
Electrical Protection: A professional 3-phase control panel with thermal overload protection and single-phasing/imbalance monitoring is mandatory. Calibrate the relay precisely to the motor’s Full Load Amperage (FLA).
Cooling Requirement: A minimum flow velocity of 0.08 m/s past the motor casing is necessary. In larger boreholes, a flow induction shroud is required to ensure forced water circulation for heat dissipation.
Handling: Use the motor’s dedicated lifting eyes during installation. Never support the pump-motor assembly by the power cable, as this can breach the seal.
Cable Connection: All cable splices must be completed using a professional-grade, resin-encapsulated submersible kit to maintain the IP 68 rating.