DDN Series
Three-phase mains choke
Description
Information:
- When power converters are used, the grid choke has the task of protecting the grid from voltage dips during commutation and the resulting harmonics.
- In addition to the standard series listed below, we can also dimension mains chokes for you specifically according to your specifications using our calculation computer, and have them manufactured by our trained specialists.
- Of course, we place great importance on adhering to the specified values during sizing, we produce according to the applicable regulations, and are striving to produce an optimal price-performance ratio for you.
- Three-phase mains choke, nominal voltage Un = 3x 400V
- usual design, short-circuit voltage uk = 4 – for current curve similar to sine –> thermal current Ith = In
- Chokes are vacuum impregnated with cast resin varnish to reduce humming and to increase insulation.
- High-quality insulation materials for insulation class T40/F
- Windings on coil bodies or freely suspended on the sheet metal package (improved cooling)
- Connections depending on current as cable lugs or flat copper connection
- All chokes are computer-sized, piece-tested including a high-voltage insulation test with several 1000V. CE compliant
IP00 degree of protection, suitable for installation up to IP21
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