|
 Ideal for smaller installations, the S Series from Milbank PowerGen highlights our induction based wind turbines that bring efficient, reliable, safe and quiet renewable energy to North America. Rated at 5 kW for applications requiring up to 25,000 kWh of electricity annually. Find out how Milbank, in partnership with Endurance Wind Power, can help design, manufacture and support the best wind energy turbines for your needs.
- Rated power: 5.2 kW @ 11 m/s
- Applications requiring 10,000 to 25,000 kWh of electricity annually
- Residential, small farm, wind power demonstration and training applications
Features
- Gearbox – Gearbox is an inline helical with a gear ratio of 11:1. Additionally, there is a hollow shaft for direct connection to the main shaft (no couplings).
- Induction Generator – Induction generator delivers grid-compatible power eliminating the need for an inverter, batteries or any other power electronics, thus improving efficiency, increasing reliability and lowering product costs.
- Turntable Yaw Bearing – Turntable yaw bearing is a 4-point contact ball bearing designed for high overturning and thrust loads and oscillatory motions.
- Slipring – Slipring feeds output power to four high-voltage wires (hot, hot, neutral and ground) running down the tower connecting directly to the home and electric grid via a breaker panel, similar to any large appliance.
- Brake Disk – Large 16" brake disk provides high torque capacity, and is located close to the turbine rotor for maximum safety.
- Dual Fail-Safe Calipers – Dual pneumatic brake calipers operate independently to ensure redundant, failsafe protection against over-speed.
- Main Shaft Bearings – Main shaft bearings were selected following detailed engineering analysis for extreme loading, maximum deflection and extended life. Bearings are housed in pillow blocks for self-alignment and ease of serviceability.
- Rotor Hub – The Rotor Hub is a sandwich construction for high strength and long life, with taper-lock bushing connections to the main shaft for easy alignment and high torque capacity.
- Fiberglass Blades – Fiberglass blades use high-performance airfoils designed specifically for insensitivity to roughness (bugs and dirt). A low Reynold’s number operation (low speed) and stall control (constant speed operation) make the Milbank wind turbine a quiet running turbine.
- Anemometer – Anemometer senses cut-in (4 m/s) and cut-out (25 m/s) wind speeds, providing additional levels of diagnostics and monitoring for optimum performance.
Specifications
| Turbine |
| Configuration |
3 blades, horizontal axis, upwind |
| Rated power @ 11 m/s |
5.2 kW |
| Applications |
Direct grid-tied |
| Rotor speed |
166 rpm |
| Cut-in wind speed |
9.2 mph (4.1 m/s) |
| Cut-out wind speed |
54 mph (24 m/s) |
| Survival wind speed |
116 mph (52 m/s) |
| Design lifetime |
30 years * |
| Overall weight |
661 lbs (300 kg) |
|
|
| Rotor |
| Rotor diameter |
20.9 ft (6.37 m) |
| Swept area |
343 ft2 (31.9 m2) |
| Blade length |
10.1 ft (3.08 m) |
| Blade material |
Fiberglass / Epoxy |
| Power regulation |
Stall control (constant speed) |
|
|
| Generator |
| Frequency |
60 Hz |
| Voltage |
120-240 VAC |
| Phase |
Split-phase |
| Type |
Induction generator |
|
|
| Brake & Safety Systems |
| Main brake system |
Rapid fail-safe mechanical brake on rotor shaft |
| Secondary safety system |
Redundant fail-safe mechanical brake on rotor shaft |
| Automatic shut down triggered by : |
• High wind speed
• Grid failure
• Over speed
• All other fault conditions |
|
|
| Controls |
| PLC based |
Includes remote monitoring software |
|
|
| Warranty |
| Turbine, controls |
5 years |
|
; |
| Towers |
| Types and heights |
• Guyed, 102 ft (31.1 m) or 120 ft (36.6 m);
• Freestanding monopole, 90 ft (27.5 m) |
| Maintenance access |
All are tiltable towers |
*Provided service and maintenance schedules are strictly followed.
Power Curve & AEP
Power Curve
Annual Energy Production
|
