ABB REQ650 Applications Manual

Also see for Relion REQ650: Applications manual Commissioning manual Product guide Operation manual Commissioning manual

Contents

ABB REQ650 Applications Manual Manual pdf 41 page image

TransformerprotectionTransformerLineLineSetting of current input:Set parameterCTStarPoint withTransformer asreference object.Correct setting is"ToObject"ForwardReverseDefinition of directionfor directional functionsLine protectionSetting of current input:Set parameterCTStarPoint withTransformer asreference object.Correct setting is"ToObject"Setting of current input:Set parameterCTStarPoint withLine asreference object.Correct setting is"FromObject"IEC05000753=IEC05000753=1=en=Original[1].vsdIsIsIp Ip IpIED IEDIEC05000753 V2 EN-USFigure 4: Example how to set CTStarPoint parameters in the IEDFigure 4 shows the normal case where the objects have their own CTs. The settingsfor CT direction shall be done according to the figure. To protect the line, directionof the directional functions of the line protection shall be set to Forward. Thismeans that the protection is looking towards the line.4.2.2.2 Example 2 SEMOD55055-29 v7Two IEDs used for protection of two objects and sharing a CT.1MRK 505 383-UEN A Section 4Analog inputsBreaker protection REQ650 2.2 IEC 35Application manual