Full Description

Scope

This recommended practice applies to liquid-immersed power transformers that are connected to generators subjected to significant short duration increases in the volts per hertz (V/Hz) ratio.

Purpose

The main purpose of this recommended practice document is to provide a procedure for developing design-specific V/Hz operational limits versus time curves for users of power transformers directly connected to generators. More accurate and more design-specific V/Hz curves should aid users in the proper design and settings of protective relay protection systems of power transformers.

Abstract

New IEEE Standard - Active.The recommended process and criteria for developing V/Hz curves for relay protection purposes for power transformers directly connected to generators are provided in this recommended practice.

Product Details

Published: 06/14/2024 ISBN(s): 9798855708943, 9798855707908, 9798855707915 Number of Pages: 17 File Size: 1 file , 1.4 MB Product Code(s): STD26976, STDPD26976, STDPL27060 Note: This product is unavailable in Russia, Ukraine, Belarus