The tip icon indicates advice on, for example, how to design yourproject or how to use a certain function.Although warning hazards are related to personal injury, it should be understoodthat operation of damaged equipment could, under certain operational conditions,result in degraded process performance leading to personal injury or death.Therefore, comply fully with all warning and caution notices.1.4.2 Manual conventionsConventions used in IED manuals. A particular convention may not be used in thismanual.• Abbreviations and acronyms in this manual are spelled out in the glossary. Theglossary also contains definitions of important terms.• Push button navigation in the LHMI menu structure is presented by using thepush button icons, for example:To navigate between the options, use and .• HMI menu paths are presented in bold, for example:Select Main menu/Settings.• LHMI messages are shown in Courier font, for example:To save the changes in non-volatile memory, select Yes and press .• Parameter names are shown in italics, for example:The function can be enabled and disabled with the Operation setting.• Parameter values are indicated with quotation marks, for example:The corresponding parameter values are "On" and "Off".• IED input/output messages and monitored data names are shown in Courierfont, for example:When the function starts, the START output is set to TRUE.1.4.3 Functions, codes and symbolsTable 1:RED615 Functions, codes and symbolsFunction IEC 61850 IEC 60617 IEC-ANSIProtectionThree-phase non-directional overcurrentprotection, low stage, instance 1 PHLPTOC1 3I> (1) 51P-1 (1)Three-phase non-directional overcurrentprotection, high stage, instance 1 PHHPTOC1 3I>> (1) 51P-2 (1)Three-phase non-directional overcurrentprotection, high stage, instance 2 PHHPTOC2 3I>> (2) 51P-2 (2)Three-phase non-directional overcurrentprotection, instantaneous stage,instance 1PHIPTOC1 3I>>> (1) 50P/51P (1)Non-directional earth-fault protection,low stage, instance 1 EFLPTOC1 Io> (1) 51N-1 (1)Table continues on next page1MRS756498 D Section 1IntroductionRED615 9Application Manual