Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations cowski 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: *

  1. SHR1969

    automatic test set for instrument transformers

    I am "old school" when it comes to testing CT's. I like hands on testing of ratio error and saturation tests, etc. All these new automatic CT testers make me question how the test is done and what can I expect from the results? I expect the automatic tester to do the tests in accordance with the...
  2. SHR1969

    Protective Relay Testing - Insurance requirement

    1. Do not do an insulation resistance (hy pot) test on microprocessor based relays. 2. What type of SEL relays do you have? I assume they are distribution and motor protection type relays. To take the mystry and misery out of testing the SEL relays you might want to look into a fully automated...
  3. SHR1969

    Calibrating kwh meters for generators

    Check Megger.com and look at Watthour Test Equipment. They have a variety of test options.
  4. SHR1969

    Under frequency Element

    What is the time delay setting for the under frequency element?
  5. SHR1969

    Hydraulic Reclosers timing

    It has been a long time since I tested OCR's (about 20 years ago). I went back and looked it up in an old McGraw Edison book. They say it should take approximately 1 minute per operation to reset. Therefore, after one shot it should take 1 minute to reset. If you went two shots it should take 2...
  6. SHR1969

    Relay testers

    Sorry to hear about your disappointing review of the MPRT from Megger. I do not know what you got to see, but the MPRT comes with the AVTS V2.0 software. The software includes test files for about 57 different relays by 5 different relay manufacturers. Most of those test files are for...

Part and Inventory Search