Series DUD404
Three-phase du/dt choke
Description
Information:
- The voltage on the output side of a frequency converter is a pulsating alternating voltage (clock frequency). This results in voltage peaks of up to 5 kV/µs. In the long term, these voltage peaks destroy the insulation of the downstream motors. Our du/dt chokes attenuate these voltage peaks (approx. < 1500 V/µS). This value depends on factors such as the du/dt of the frequency inverter, cable length, cable quality, etc.
- Three-phase du/dt choke, rated voltage Un =400 V
- screened cable length: 3 m to 30 m. Suitable for dynamic applications.
- Chokes are vacuum impregnated with cast resin varnish to reduce humming and to increase insulation.
- We use high-quality insulation materials for the chokes for insulation class T40/F and very high-quality sheet metal.
- Connections as terminals, cable lugs or copper rails, depending on current rating. (Protection class IP00, installation up to IP21)
- Unit-tested including a high-voltage insulation test with several 1000V. CE-compliant
Another solution is an air coil (see air coil).
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