SIVACON 8PS TRUNKING SYSTEMS
LDM system
Joint bracket for easy connection of trunking elements
Sustainable power distribution in wind turbines
Within the scope of sustainable power generation, wind energy is becoming more and more important. At the same time, manufacturers of wind turbines are exposed to a constantly increasing cost pressure: Their plants must transmit the generated power in a safe, reliable, and cost-efficient way. With the proven LD busbar trunking system, Siemens has more than a decade of experience in safe and reliable power transmission between the nacelle and the tower base of innumerable wind turbines.
Customer-specific solution
The LDM system, which has been especially conceived to meet the demands of wind turbines, is built upon this experience, adding a special, modular design. This makes it possible to offer wind turbine manufacturers a customer-specific solution for each task and at every point, in the nacelle, in the tower, or in the tower base.
Compact trunking element with a length of up to 3,200 mm
Efficient solution
The LDM busbar trunking system conforms to the latest standards IEC 61439-1/-6, and is therefore particularly reliable and safe. As a design verified system it offers – compared with cables – defined electrical and mechanical properties, it is halogen-free, and convinces by its low fire load. The sys- tem’s compact design, low-loss connection technology, pre-assembled busbar elements, optimised use of material, as well as recy- clability make planning, installation, commis- sioning, and removal especially cost-efficient.
Segment connectors for easy connection
of the pre-assembled busbars in the wind tower
Feeding unit for cable connection at the tower base and nacelle
Mono
Voltage level
1,000 V
Current carrying capacity at 35° C
800 A - 4,100 A *
Short-circuit rating
Scalable max. 116 kA
Degree of protection
IP21
* Up to 8,200 A for two parallel systems
Twin
Voltage level
1,000 V
Current carrying capacity at 35° C
Rotor: 800 A - 1,000 A
Stator: 800 A - 3,050 A
Short-circuit rating
Scalable max. 116 kA
Degree of protection
IP21
Technical data
Busbar coating | Epoxy | Epoxy | 19 | |||||
Insulation | Air-insulated | Air-insulated | 18 | |||||
Mounting Position | Vertical, horizontal | Vertical, horizontal | 17 | |||||
Standards | IEC 61439-1/-6 | IEC 61439-1/-6 | 16 | |||||
Housing material | Galvanised sheet steel (optional coating in RAL colour) | Galvanised sheet steel (optional coating in RAL colour) | 15 | |||||
Conductor material | Aluminium | Aluminium | 14 | |||||
Connection technology | Separate single-bolt joint block with hook system | Separate single-bolt joint block with hook system | 13 | |||||
Data transmission | - | - | 12 | |||||
Tap-off unit | - | - | 11 | |||||
Tap-off point | - | - | 10 | |||||
Fire load (per tap-off point) | - | - | 9 | |||||
Fire load | Depending on the application | Depending on the application | 8 | |||||
Number of conductors | 3 to 10 conductors per trunking unit (2 circuits possible per trunking unit) | 3 to 10 conductors per trunking unit (2 circuits possible per trunking unit) | 7 | |||||
Rated short-time withstand current Icw (1s) | Up to 116 kA | Up to 116 kA | 6 | |||||
Rated peak withstand current Ipk | Up to 255 kA | Up to 255 kA | 5 | |||||
Rated current InA | 800 A to 8,200 A | 800 A to 8,200 A | 4 | |||||
Degree of protection | IP21 with salty spray and condensation test | IP21 with salty spray and condensation test | 3 | |||||
Rated operational voltage Ue | 1,000 V AC | 1,000 V AC | 2 | |||||
Rated insulation voltage Ui | 1,000 V AC | 1,000 V AC | 1 |
Your benefit
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Modular system for individual customer requirements
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Pre-defined impedances and stipulated technical features
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Efficient installation
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Compact, maintenance-free
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busbar trunking systems