scope:

Foreword 

(This introduction is not a part of IEEE Std 1250-1995, IEEE Guide for Service to Equipment Sensitive to Momentary Voltage Disturbances.)

This guide was developed out of an increasing awareness of the incompatibility of modern electronics equipment with a normal power system environment. Simply put, much new user equipment is not designed to withstand the surges, faults, and reclosing duty present on typical electric utility distribution systems or within the user's facility.

This guide describes the operating environment of sensitive utilization equipment, identifies potential problem areas, and suggests effective ways to satisfy its special voltage requirements. Cooperation among users, utilities, and equipment designers is needed to ensure both adequate electric service to all users and proper equipment operations. Solutions are presented from the perspectives of both the customer and the utility provider, since the problems users of sensitive equipment experience often originate from either area..

The Working Group on Distribution Voltage Quality, which undertook the development of this guide, had the following membership:

Daniel J. Ward, Chair

M. Andresen

G. C. Hensley

K. Price

R. Archibald

M. D. Higgins

G. B. Rauch

R. H. Arndt

L. Hong

J. M. Roberts

V. Basch

M. B. Hughes

J. A. Roiz

R. Bergeron

M. J. Kempker

S. Sabir

A. J. Braun

T. S. Key

N. K. Saini

J. F. Buch

D. Kreiss

A. N. St. John

J. J. Burke

T. M. Kulas

M. Samotyj

D. M. Chamberlin

A. Kusko

L. M. Saulsman

L. Clark

J. A. LaPoint

W. E. Schwabe

L. E. Conrad

J. Lamoree

R. J. Serocki

T. M. Croushore

J. Lemke

M. T. Sheehan

A. J. Csomay

F. D. Martzloff

G. Shomo

A. Domijan

A. McEachern

T. A. Short

P. E. Eichin

M. F. McGranaghan

J. C. Smith

A. E. Emanuel

J. C. McIver

K. Srinivasan

R. C. Ender

H. Mehta

R. P. Stratford

T. J. Gentile

W. A. Moncrief

J. E. Sullivan

T. N. Gerstnecker

L. Morgan

R. S. Thallam

R. S. Glickman

A. G. Morinec

B. Tobin

W. M. Grady

R. C. Mukherji

H. Tram

T. Grebe

J. E. Mungenast

D. B. Vannoy

D. C. Griffith

T. H. Ortmeyer

M. Waclawiak

E. W. Gunther

D. J. Pileggi

V. Wagner

D. P. Hartmann

S. G. Whisenant

In addition to the working group members, the following people contributed their experience and knowledge to this guide:

T. M. Gruzs

C. L. Rudasill

D. R. Smith

The following persons were on the balloting committee:

James E. Applequist

George G. Karady

R. J. Piwko

J. F. Buch

Nestor Kolcio

F. S. Prabhakara

James J. Burke

Robert E. Lee

Edward W. Reid

I. S. Grant

Thomas J. McDermott

Dennis Reisinger

J. W. Janischewsky

Franklin D. Myers

B. R. Shperling

J. G. Kappenman

D. L. Nickel

Daniel J. Ward

When the IEEE Standards Board approved this standard on March 16, 1995, it had the following membership:

E. G. "Al" Kiener, Chair

Donald C. Loughry, Vice Chair

Andrew G. Salem, Secretary

Gilles A. Baril

Richard J. Holleman

Marco W. Migliaro

Clyde R. Camp

Jim Isaak

Mary Lou Padgett

Joseph A. Cannatelli

Ben C. Johnson

John W. Pope

Stephen L. Diamond

Sonny Kasturi

Arthur K. Reilly

Harold E. Epstein

Lorraine C. Kevra

Gary S. Robinson

Donald C. Fleckenstein

Ivor N. Knight

Ingo Rusch

Jay Forster*

Joseph L. Koepfinger*

Chee Kiow Tan

Donald N. Heirman

D. N. "Jim" Logothetis

Leonard L. Tripp

L. Bruce McClung

*Member Emeritus Also included are the following nonvoting IEEE Standards Board liaisons:

Satish K. Aggarwal

Richard B. Engelman

Robert E. Hebner

Chester C. Taylor

Paula M. Kelty

IEEE Standards Project Editor

Scope

This guide describes momentary voltage disturbances (short-duration transients) occurring in ac power distribution and utilization systems, their potential effects on sensitive equipment, and guidance toward mitigation of these effects. Also provided is a description of the operating environment of sensitive utilization equipment as well as information on harmonic distortion limits.