Motor Protection from Overvoltage Spikes

This white paper discusses Enerdoor’s approach with customers in need of protecting motors against overvoltage spikes, widely known as dV/dt. Voltage wave reflection is a function of the voltage rise time (dV/dt) and the length of the motor cables. This phenomenon creates additional overvoltage spikes causing premature degradation and failure to motor insulation.

Why Motor Protection is Beneficial

  • Protects motors
  • Reduces overvoltage spikes
  • Suitable for open and close loop application
  • Low power loss
  • Reduces temperature
  • Very stable and difficult to saturate
  • Compact case
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