×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

CT Saturation Curve

CT Saturation Curve

CT Saturation Curve

(OP)
how the saturation time of a CT is being calculated?
for example a 600/5 ratio with a B=0.1

RE: CT Saturation Curve

for B=0.1 this is CT metering; there is not problem with saturation.

RE: CT Saturation Curve

Stated slightly differently: If a Metering CTs is operated within it's steady state nameplate thermal and accuracy limits, it won't be saturated. For measuring fault conditions, relayings CTs should be used instead because metering CTs will saturate very fast.

RE: CT Saturation Curve

(OP)
I always thought that the CT accuracy class defines the metering or protection class and not the Burden.
A 600/5 CT with B=0.1 is used for protection in this case.

RE: CT Saturation Curve

The standard burdens for relaying are 1, 2, 4, and 8 ohms.

RE: CT Saturation Curve

Hi tctctraining,
The time to saturation depends on various factors. IEEE C37.110 gives the equation to calculate the time to saturation knowing system time constants etc.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

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.

Click Here to join Eng-Tips and talk with other members!


Resources