DV/DT Filter

Introduction

DV/DT Filters are mainly used for the protection of motor winding which are driven by IGBT Drives. The high voltage spike generated by the drives tend to be very high depending upon the length of the cable from the drive to the motor, which ages the motor winding and leads to premature failing of the motor insulation.

Typical Application Areas

Motor Drive Applications with short or medium motor cable length. Submersible pumps. Elevator, hoisting & Cranes. HVAC Equipment's using Motor Drives Motor drives for process lines High Dynamic Operations

Features and Benefits

  • Helps in reduction of high output voltage dv/dt from IGBT drives.
  • Helps in protection of motor winding from premature aging and destruction.
  • Increases Service life o Motors.
  • High reliability and production up time.
  • Less interference propagation towards neighbouring equipment or lines.
  • Output filter with low impedance, ideal for lower voltage drops across the motor.

Features and Benefits

Technology DV/DT Filtering
Type 3P3W
Operating Voltage 500 VAC ± 10%,3 Phase
Rated Currents 10 to 550 Amps @ 400C
System Frequency 1 Hz - 50Hz
Switching Frequency 2 – 6 Khz Depending on motor cable length.
Operating Amb. Temp. -200C to +450C
Maximum Peak Voltage <1000V
Voltage Drop <3V @ 50Hz
Duty Continuous
Overload 150% for 1-minute duration once per hour
Protection IP 00
Chokes IS2026 – IEC 60076-6
Terminals IEC60947-7-1
Flux Density 0.6 Tesla @ 50Hz, 180% Linearity