Resistors - Import export

CSN® Braking Resistors are used for controlled braking of every kind of electrical drives. Braking resistors convert the energy of drives into thermal energy which will be dissipated into the corresponding cooling medium. Design variations with natural or forced air cooling are available. CSN® Braking Resistors can be delivered with an indirect water cooling system using an airwater heat exchanger as well. The design of the CSN® Braking Resistors is particularly suitable for use in maritime applications. Schniewindt, as global market leader in this resistor sector, has a wealth of experience in the design according to the technical guidelines and rules of international classification societies for example

CSN® Dummy Load Resistors used as dummy loads for testing high frequency radio transmitter systems. Schniewindt had already supplied dummy load resistors with rated max. cont. power up to 1500 kW. CSN® Dummy Load Resistors are designed and manufactured individually to customer requirements and specific application.

CSN® PreInsertion Resistors are used for limitation of transients during energisation process of transformers and HVDC VSC converter applications. CSN® Discharge Resistors are used for discharge of Capacitors, reactors and superconducting magnetic field coils. They are characterized by a high dielectric strength and energy absorption capacity. CSN® PreInsertion or Discharge Resistors are designed and manufactured individually to customer requirements and specific application.

CSN® Neutral Earthing Resistors are used in power distribution systems for star point earthing of transformer or generator windings. According to the application (low or high ohmic neutral earthing type) pakkages made out of meander shaped stainless steel wire elements or CSN® Resistor Webs will be used as active material. Schniewindt has already supplied units for system voltages up to 380 kV and earth fault currents up to 70 kA. CSN® Neutral Earthing Resistors provide optimal solutions for your applications high or low resistance values outdoor or indoor operation reliable, nearly maintenancefree technology compact design with high power density reliable performance at all system voltages Every single CSN® Neutral Earthing Resistor is manufactured according to individual customer requirements.

CSN® Load, Testing and Special Resistors are used to test generators and emergency generating sets to test battery capacity as dummy load when testing circuit breakers to discharge capacitors for starting, controlling and breaking of electric drives CSN® Load, Testing and Special Resistors are characterized by technically mature and proven design for operations both indoors and outdoors optimal design to suit all current values and load cycles reliable control of all operating voltages even in most adverse service environments longterm stability highly reliable technology CSN® Load, Testing and Special Resistors are designed and manufactured individually to customer requirements and specific application.

CSN® Protection Resistors are used for protection of electric equipment in case of shortterm peak currents. Due to the high capacity of energy absorption, CSN® Protection Resistors can absorb several kiloamperes for a limited period of time, protecting connected modules.

A drive motor can also act as a generator. If the drive system is built so as to allow reverse power to flow then this power can be fed into a resistor, thus taking energy out of the system and causing whatever is driving the motor to slow down. Following to this the braking resistor converts the stop energy into heat. Electrical drive systems are being used more and more on ships, oil rigs, crane barges and offshore vessels of all types. An important benefit from using an electric drive is that reliable systems of regenerative and dynamic braking resistors are available to complement or replace traditional mechanical braking systems. The advantages of electric braking include control, reliability, mechanical simplicity, weight saving and in some cases the opportunity to make use of the regenerated braking energy. The Braking Resistor Units from Klöpper Therm are designed according to specific applications.