I have a question regarding a ground application on a delta system. We bought a High Resistance Grounding system. We had a choice for a Wye(broken)-Delta or Zig-Zag transformer to create the neutral point. We chose the Zig-Zag for the added benefit of harmonics.
When we receive the unit we...
Team,
I'm really lost on how to determine the required protection columns for the UL Classification for FR3.
We are installing a 1000KVA 13.2 - 480/277 FR3 station type transformer next to building. Under NEC 450.23 we have met all the requirements for an UL install except for the Required...
Hello,
We are currently spec'ing out meters for different locations on our site and I started comparing Power Quality meters on the market today. I am currently looking at the Square D ION7650, Eaton Powerxpert 8000, Fluke 1750. The question is, does anyone out there have any good...
Hello everyone,
I was hoping to get input on a situation my site encountered last week.
System - VCP-W Breaker with ABB TPU relay. Distributes 13.2KV directly to 5 Oil Switches and a line up of MV Switches. Each of the Oil Switches feed to 1000KVA D-Y oil filled transformer. The MV switches...
