system contingencies. The voltage bandwidth should not be confused with the control schedule’s that is programmed into a Generation automatic voltage control dead‐band Operator’s regulator’s system, which should be adjusting the AVR prior to reaching either end of the voltage schedule’s bandwidth. Rationale for R6: Although tap settings are first established prior to interconnection, this requirement could not be deleted because no other standard addresses when a tap setting must be adjusted. If the tap setting is not properly set, then the amount of VARs produced by a unit can be affected. Version History Version Date Action Change Tracking 0 April 1, 2005 Effective Date New 1 August 2, 2006 BOT Adoption Revised 1 June 18, 2007 FERC approved Version 1 of the Revised standard. 1 July 3, 2007 and Errata Added “Generator Owners” to Applicability “Generator Operators” section. 1 August 23, Removed and Errata “Generator Owners” 2007 to Applicability “Generator Operators” section. 2 August 5, 2010 Adopted by NERC Board of Trustees; Revised Modified to address Order No. 693 Directives contained in paragraphs 1858 and 1879. 2 January, 10 Revised 2011 3 May 9, 2012 Adopted by NERC Board of Trustees; Revised Modified to add a WECC region variance
system contingencies. The voltage schedule’s bandwidth should not be confused with the control dead‐band that is programmed into a Generation Operator’s automatic voltage regulator’s control system, which should be adjusting the AVR prior to reaching either end of the voltage schedule’s bandwidth. Rationale for R6: Although tap settings are first established prior to interconnection, this requirement could not be deleted because no other standard addresses when a tap setting must be adjusted. If the tap setting is not properly set, then the amount of VARs produced by a unit can be affected. Version History Version Date Action Change Tracking 0 April 1, 2005 Effective Date New 1 August 2, 2006 BOT Adoption Revised 1 June 18, 2007 FERC approved Version 1 of the standard. Revised 1 July 3, 2007 Added “Generator Owners” and “Generator Operators” to Applicability section. Errata 1 August 23, 2007 Removed “Generator Owners” and “Generator Operators” to Applicability section. Errata 2 August 5, 2010 Adopted by NERC Board of Trustees; Modified to address Order No. 693 Directives contained in paragraphs 1858 and 1879. Revised 2 January, 10 2011 Revised 3 May 9, 2012 Adopted by NERC Board of Trustees; Modified to add a WECC region variance Revised
WECC-0128%20Posting%202%20VAR-001-4.1.%20Draft%201%20Clean.docx