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N133/4.8


The N133/4.8 turbine is our highest yielding onshore turbine for strong wind regions with average wind speeds over 8.5 m/s. The turbine has a 78 percent increase in rotor sweep compared to its predecessor (N100/3300) and a power output of 4.8 MW achieving yields that are up to 39 per cent.

For the N133/4.8, Nordex has transferred the rotorblade of the proven N131 to the Delta4000 series. The combination with the N149/4.0-4.5 hub has increased the rotor diameter to 133 metres. The N133/4.8 has a rotor sweep of 13,935 square metres.

The technical innovations introduced with the N149/4.0-4.5, such as improved maintenance concepts, a mobile crane solution and a higher efficiency of the electrical system will also be used in the new turbine to significantly reduce the cost of energy.

Despite its large rotor the N133/4.8 comes with a variety of tower heights simplifying the permitting process at sites that are subject to strict maximum heights.

Fitted with serrations, the rotor blades of the N133/4.8 reduce sound levels to meet the requirements of the local residents as well as the regulatory authorities. At maximum output the sound power of the N133/4.8 remains below  106 dB(A). At the same time, the turbine can also be operated in various sound-reduced modes down to maximum  98 dB(A) if required.

The N133/4.8 is the turbine model for strong wind sites of the Delta4000 series. In developing the Delta4000 series, there was one primary focus: the sustainable reduction of the cost of energy (COE).


Downloads
› Brochure Delta4000

Brief description


Higher nominal output
The N133/4.8 has a maximum output of 4.8 MW. Compared to the N100/3300 the annual energy yield is up to 39 percent higher This makes it our highest yielding onshore turbine for strong wind regions.
 
Proven rotor blade design

The N133/4.8 features the in-house developed one piece NR65.5 rotor blade. Compared to the N100/3300 the rotor diameter is 33 metres larger, the rotor sweep is 13,935 square meters.
 
Optimized hub heights
Hub heights of 78, 83 and 110 meters for strong wind sites simplifyi the approval process at sites that are subject to height restrictions. Even with tip height restrictions of 145 meters, the N133 / 4.8 can still be operated safely and efficiently. This ensures a high level of competitiveness of the N133 / 4.8 in challenging auctions.
 
Reduced power levels
Despite the substantial increase in output, the maximum sound power level of the N133/4.8 is limited to maximum 106 dB(A). At sites with lower sound power requirements, the turbine can operate in a large number of sound-optimised modes with maximum 98 dB(A). These can be individually controlled on the basis of wind direction, time of day, outside temperature or local public holidays in order to keep the sound level as low as possible and meet legislative requirements.
 
Design lifetime
The turbine is designed for an operational lifetime of 20 years while, depending on local site conditions of the wind farm, an operating life of up to 25 years can also be attested to.
 
Reduced service effort
The technical concept of the N133/4.8 minimises the service effort over the whole lifetime: every component was consequently designed for reduced maintenance. Further the turbine has been designed to cater for a mobile crane solution in order to exchange main components with reduced cost and effort.
 
Proven drive train concept
The drive train concept is based on the proven 3-point suspension structure. The optimised drive train geometry reduces the forces impacting the individual components, thus lowering the strain on the robust rotor bearings.
 
Nacelle
Transformer and converter are integrated in the nacelle in order to achieve higher yields, due to reduced cable losses The outer dimension of the nacelle remain the same as for the 3MW Delta turbines ensuring a trouble-free transport.
 
Economical electrical system
As like the first turbinesof the Nordex’s multi-megawatt platform introduced in the year 2000, the N133/4.8  is fitted with a double-fed asynchronous generator and frequency converter. This system is characterised by superior reliability and economic efficiency.
 
Inhouse produced control system
Over 4,500 Nordex turbines have already been equipped with Nordex’s own proven Nordex Control™ system, which controls, regulates and monitors the wind power systems. Permanent and protected access to the turbine and wind farm data on site or remotely is browser-based, interactive and secure. With its modular structure and standardised interfaces, Nordex Control™ can be adjusted flexible to meet the customer’s SCADA requirements.
 
Accustomed grid compatibility
The N133/4.8 meets the grid requirements of the international markets. The German System Service Ordinance (SDLWindV) is one of the most demanding grid codes in Europe. With their fault ride-through capabilities, the turbines can effortlessly bridge any disruptions in voltage and thus fully comply with all requirements for the system service bonus. What is more, the Nordex Windfarm Management System allows the grid operator to directly control the active and reactive power of the windfarm in the grid.
 
Standard operating conditions
The normal climate version (NCV) of the turbine can be operated at temperatures as low as -20 degrees Celsius, thus enhancing the annual yield at your site. The proven Nordex Cold Climate Package additionally helps to open up high-yield cold locations. The cold-climate version (CCV) of the turbine has an extended operating range of temperatures down to -30 degrees Celsius.

 

A safe work place
The turbine nacelle is a spacious workplace with deliberate escape and rescue routes. This helps to lower maintenance-induced downtimes:

  • Readily accessible systems for maintenance
  • On-board crane for replacing components <=1 ton
  • Swift and weather-protected access to the hub thanks to complete encapsulation

 
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