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The filter is designed for the reduction of the THD (Total Harmonic Distortion) when used with B12 rectifiers. The harmonic currents are extremely suppressed so that the THD is reduced to lower than 5 % (for example in UPS-systems).
- Conforming to: VDE 0570 / EN 61558
- Test voltage: L-PE 2500 V, DC 1s
- Overload: 1,5 x I 1 min/h
- Climatic catagory: DIN IEC 60068-1
Typical values of Total Harmonic Distortion with B12 rectifiers and use of transformers are between 12 and 13%. This complies with the EN 61000-3-4 and EN 61000-3-12 standards.
If more severe conditions for the mains are defined, in addition to the transformer it is necessary to use REO-Harmonic-Filter type CNW 897. These filters are available in two different versions: THD < 5% and THD < 10 %.
Ordering code: CNW 897/Rated current [A] / Rated voltage [V] / THD [%]
Example: CNW 897 / 310 / 400 / 5 means: 310A, 400V, <5%THD
Inductance: 0.2 to 5.0 mH Rated current: 16 to 600 A Rated voltage: 400 to 690 V