Protective relay device

Details Protective relay device Protective relay device

G - Physics

01

R

324/70

G01R 19/25 (2006.01) G01R 31/02 (2006.01) H02H 1/06 (2006.01) H02H 3/093 (2006.01)

Patent

CA 1058291

ABSTRACT OF THE DISCLOSURE An electrical device for protecting an alter- nating current network in which a static inverse time- overcurrent relay obtains network current information and relay circuit operating power from a current transformer having two secondary windings. Low transformer burden and accurate network information signals that are linearly responsive to a wide range of network current magnitudes are achieved through the use of a switching circuit that prevents the simultaneous operation of both secondary windings The relay circuit employs an RC network with a short, pre- cision time constant for curve shaping and employs digital counting techniques to provide time delay multiplication, precision time scale selection and a variable delay time variable in accordance with the magnitude of system current.

240189

Affiliated with

Also associated with

Rating

Protective relay device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Protective relay device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protective relay device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-909715