Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations SSS148 on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: ubern
  • Order by date
  1. ubern

    Understanding a Wattmeter

    No, we are not having any equipment problems its just a level of knowledge thing. See we train on how to operate our equipment but very little on how it works. That last question about the reverse power relay was a real eye opener. Once I understood that pf could be represented on a graph...
  2. ubern

    Understanding a Wattmeter

    We have a Wattmeter that uses the Hall effect to take the instantaneous value of voltage and current and sends it to a DC meter. What im wondering is if this is actually reading KW or just a close approximation. P = 3^.5 * I * V * pf. So if we have 2 generators in parallel and adjust the...
  3. ubern

    Understanding reverse power relay

    Ok so let me see if i understand this correctly: Lets say when the generator is generating then voltage is leading current by a PF of .98. in this situation current positive peak and voltage positive peak are preaty close to each other because when voltage is positive then current is trying to...
  4. ubern

    Understanding reverse power relay

    I am trying to understand the reverse power relays to our steam driven generators. This is a discription of the device from the book: "Potential signal flows through the top coil over a rotatable disc and transformer action induces a circulating current in the disc. Current signal flows...

Part and Inventory Search