MTE dV/dt filters
MTE Corporation is an international supplier of power quality products designed to improve the reliability of power electronic systems and adjustable frequency drives. MTE Corporation manufactures line/load reactors, MatrixTM Harmonic Filters, dV/dt Filters, Sine-Wave Filters, DC link chokes, transformers, and other products that provide power quality solutions in a broad range of applications. As a technology leader in its field, the Company has an active product development program and new products continue to be added regularly. MTE products are represented by Westek Electronics who also provide technical services and application information.
MTE Series A dV/dt filters are designed to protect AC motors from the destructive effects of peak voltages caused long cable runs between the inverter and motor. Depending on the switching time of the power semiconductor used in the inverter and the size of the motor, cable lengths as short as 2 metres can result in motor peak voltages that exceed the rating of the motor’s insulation system. However, the longer the cable the greater the problem. The MTE dV/dt filter is provides no more than 150% of bus voltage with up to 300 metres cable between the filter and the motor. It is also rated for a maximum dV/dt of 200 volts per microsecond. The dV/dt filter has a “3% insertion impedance” which ensures motor torque is not affected by added voltage drops from the filter.
MTE Series A dV/dt filters are designed for use with inverters operated at switching frequencies between 900 Hz and 8 kHz. The dV/dt filter has a continuous current rating of 100% RMS and intermittent current of 150% for 1 minute and 200% for 10 seconds.
Features and benefits of dV/dt Filters
- Suitable for cables runs up to 1000ft
- Protect Motors from long lead effects
- Reduce Output dv/dt Voltage
- Increase reliability and extend life of electric motors
- Reduces motor heat
- Reduces audible noise from electric motors
- Current range: Up to 600
- Voltage range: Up to 690V
- Suitable for switching frequencies from 900Hz to 8KHz
- Enclosures: Open panel, NEMA 2, NEMA 3R or custom design to your requirements