I have a current imbalance in a three phase chiller motor (480v 300 hp)Each phase: 1- 200 2 - 215 3 - 252. The voltage imbalance for this is less than three percent. We are also seeing other motors in the facility experiencing current imbalance. We also see the power factor readings for each leg can be more than 1o percent diffeent. If one motor suffered current imbalance I would suspect a motor problem but five tend to lead to a distribution problem. Is it possible several nonlinear loads (277 lighting, etc.) can be a contributing factor?
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
A number of terms like “digitization”, “digital twin”, and “digital thread” have started to emerge in the product design world. While these terms have loose and varying definitions, the core ideas that underpin each of these concepts are becoming increasingly important to successful product development. Download Now
Over the past few years, there has been growing interest among industrial companies and solutions providers with regards to Product Innovation Platforms, where design, manufacturing and IoT tools are bundled into a single software package. Download Now