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Product Name:dV/dT Filters
Category:Power Electronics
The dV/dT filter combines an inductor and parallel resistor network to mitigate both high frequency components and voltage spikes between the VFD and motor. The filter can mitigate the effects of reflected wave voltages greater than what a reactor alone can accomplish. The filter provides protection to the motor by slowing down the rate of voltage increase and minimizes the damaging peak voltages that occur within the motor’s windings and along the length of cables feeding the motor.
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Features
Application
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Dv/dt filters can support our customers with:
 
• Effectively reducing the dt/dv voltage of the inverter servo motor ends;
• Preventing the transmission cable and the servo motor coil from early aging and breakdown;
• Extending the service life of the motors and operation period and improving the servo’s reliability;
• Reducing the interference to the nearby equipment and circuits;
• Reducing the motor grounding leaking current;
• Reducing the interference when the contactor between filters and the   motors is switched on;
• Effectively reducing the peak pulse voltage of the servo motor ends.

Dv/dt filter Technical Data:
 
Voltage range: 400-1140V AC
Rated current: 5-500A
Frequency: 50-60Hz
Switch Frequency: 2-8 KHz
Max. cable length: 1000m
DV/DT≤500μS
Protection:IP00-IP20
Overload capability:150% 60S,120% 60min
Insulation Class:F,H
Dielectric strength:AC4000V/5mA/60s
Insulation resistance:core-winding,≧100MΩ(DC1000V);
Cooling:AN
 
Dv/dt Applications:
 
Ventilators,conveyors,Pumps
HVAC installations, Compressors
Elevators ,Cranes , wind power,UPS,EPS
Motor drive with long cable
Motor drive with multiple motors in parallel
Medium voltage applications(deployed in front of the step-up transformer)
 Dv/dt Applications:
 
Ventilators,conveyors,Pumps
HVAC installations, Compressors
Elevators ,Cranes , wind power,UPS,EPS
Motor drive with long cable
Motor drive with multiple motors in parallel
Medium voltage applications(deployed in front of the step-up transformer)
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