scope:

Forward

(This introduction is not part of IEEE Std C37.110-1996, IEEE Guide for the Application of Current Transformers Used for Protective Relaying Purposes).

This guide was prepared by the Guide for the Application of Current Transformers for Relaying Working Group of the Relay Inputs Sources Subcommittee of the IEEE Power System Relaying Committee. The guide is intended to assist relay engineers in understanding the operation of current transformers and their selection and application to specific relay protection schemes.

At the time this guide was approved, the working group membership was as follows:

M. W. Conroy , Chair

B. D. Nelson , Vice Chair

B. Bozoki

J. W Chadwick, Jr.

G. K. Clough

P. R. Drum

L. L. Dvorak

I. O. Hasenwinkle

J. D. Huddleston, III

W. C. Kotheimer

J. R. Linders

M. J. McDonald

G. P. Moskos

C. C. Parr

R. Ryan

E. Sage

D. W. Smaha

K. A. Stephan

J. Stephens

J. T. Uchiyama

S. E. Zocholl

The following persons were on the balloting committee:

Mark Adamiak

John Appleyard

E. A. Baumgartner

Barbara L. Beckwith

R. W. Beckwith

G. Benmouyal

David C. Blackburn, Jr.

John Boyle

B. Bozoki

James A. Bright

J. Burnworth

H. J. Calhoun

Carlos H. Castro

Thomas W. Cease

John W. Chadwick, Jr.

S. R. Chano

Graham Clough

Stephen P. Conrad

Mark W. Conroy

Carey J. Cook

Albert N. Darlington

Douglas C. Dawson

R. W. Dempsey

C. L. Downs

Paul R. Drum

Lavern L. Dvorak

Walt Elmore

A. Elneweihi

J. Esztergalyos

H. G. Farley

E. C. Fennell

C. W. Fromen

Jonathan D. Gardell

Jeffrey Gilbert

A. T. Giuliante

S. E. Grier

Edward M. Gulachenski

E. A. Guro

R. W. Haas

R. E. Hart

Irwin Hasenwinkle

C. F. Henville

J. W. Hohn

J. D. Huddleston, III

J. W. Ingleson

J. A. Jodice

Edward W. Kalkstein

Mladen Kezunovic

K. J. Khunkhun

W. C. Kotheimer

P. A. Kotos

John R. Linders

W. J. Marsh, Jr.

J. E. McConnell

M. J. McDonald

J. L. McElray

M. Meisinger

William M. Mello

R. J. Moran

Charles J. Mozina

K. K. Mustaphi

George R. Nail

B. D. Nelson

C. C. Parr

Robert D. Pettigrew

Arun G. Phadke

Alan C. Pierce

John M. Postforoosh

M. S. Sachdev

Evan T. Sage

Miriam P. Sanders

James E. Stephens

W. M. Strang

M. J. Swanson

Richard P. Taylor

James Teague

John T. Tengdin

James S. Thorp

Demetrios A. Tziouvaras

Joe T. Uchiyama

E. A. Udren

Vid Varneckas

Charles L. Wagner

William P. Waudby

Thomas E. Wiedman

P. B. Winston

K. Zimmerman

J. A. Zipp

Stan Zocholl

John A. Zulaski

When the IEEE Standards Board approved this standard on 18 April 1996, it had the following membership:

Donald C. Loughry , Chair

Richard J. Holleman , Vice Chair

Andrew G. Salem , Secretary

Gilles A. Baril

Clyde R. Camp

Joseph A. Cannatelli

Stephen L. Diamond

Harold E. Epstein

Donald C. Fleckenstein

Jay Forster*

Donald N. Heirman

Ben C. Johnson

E. G. Al Kiener

Joseph L. Koepfinger*

Stephen R. Lambert

Lawrence V. McCall

L. Bruce McClung

Marco W. Migliaro

Mary Lou Padgett

John W. Pope

Jose R. Ramos

Arthur K. Reilly

Ronald H. Reimer

Gary S. Robinson

Ingo Rusch

John S. Ryan

Chee Kiow Tan

Leonard L. Tripp

Howard L. Wolfman

*Member Emeritus

Also included are the following nonvoting IEEE Standards Board liaisons:

Satish K. Aggarwal

Alan H. Cookson

Chester C. Taylor

Rochelle L. Stern

IEEE Standards Project Editor

Scope

This standard describes the characteristics and classification of current transformers (cts) used for protective relaying. It also describes the conditions that cause the ct output to be distorted and the effects on relaying systems of this distortion. The selection and application of cts for the more common protection schemes are also addressed.