Skip navigation
Variable-frequency drive Photo credit: Shutterstock
A typical low-voltage variable-frequency drive.

Motor Branch-Circuit Short-Circuit and Ground-Fault Protection for Low-Voltage Variable-Frequency Drives

Is your VFD motor branch circuit properly protected?

Industrial facilities commonly use variable-frequency drives (VFDs) to control the speed at which alternating current motors operate. Let’s examine a couple of typical scenarios commonly encountered when designing the branch-circuit short-circuit and ground-fault protection device for a low-voltage (460V, 3-phase) motor branch circuit that includes power conversion equipment (VFD).

Register to view the full article

Register on EC&M and gain access to premium content, including this article and much more.

TAGS: Motors Design
Hide comments

Comments

  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Publish