Danotherm CBS resistors are power resistors with high pulse load capability. They are build from mica wirewound or helix self supporting coils, inside a fully-insulated aluminum housing. The resistor components are UL-approved and offer high reliability.
CBS resistors cool via convection cooling. Improved heat dissipation is achievable by forced air cooling. Danotherm CBS resistors are widely used as dump resistors for wind and gas turbines and as discharge resistors for supercapacitors.
CBS resistors have a modular architecture: It is possible to attach up to four housings mechanically to create larger units with a higher nominal power rating and more pulse load capability. The nominal power ratings for a single housing range from 445 W to 4150 kW. The maximum working voltage for CBS resistors is 1000 VAC / 1400 VDC.
The aluminium extruded housing has been optimized to the application. Thermal expansion feet allow the resistor to heat up without mechanical stress. Integrated slots allow fixture of PT100 elements. Optionally an integrated thermal switch is offered for overtemperature signaling.
Aluminum is chosen as the material for the housings because it is non-corrosive, non-magnetic, lightweight yet durable, and is an excellent conductor of heat. The resistors are fully insulated and have no external live parts.
Depending on the resistor length and resistance value, CBS resistors can handle 20 to 60 times the nominal power rating. These overload values are valid for a single 5-second pulse that occurs once every 30 minutes.
Customized and OEM versions are available upon request
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