• Coordinated Universal Time (UTC)• Local time set in the master (Local)• Local time set in the master adjusted according to daylight saving time (Localwith DST)• TimeSyncMode specifies the time sent by the IED. The time synchronisation is doneusing the following ways:• IEDTime: The IED sends the messages with its own time.• LinMasTime: The IED measures the offset between its own time and the mastertime, and applies the same offset for the messages sent as in the IEDTimeSkew.But in LinMasTime it applies the time changes occurred between twosynchronised messages.• IEDTimeSkew: The IED measures the offset in between its own time and themaster time and applies the same offset for the messages sent.• EvalTimeAccuracy evaluates time accuracy for invalid time. Specifies the accuracyof the synchronization (5, 10, 20 or 40 ms). If the accuracy is less than the specifiedvalue, the “Bad Time” flag is raised. To accommodate those masters that are reallybad in time sync, the EvalTimeAccuracy can be set to Disabled.According to the standard, the “Bad Time” flag is reported when synchronization has beenomitted in the protection for >23 h.15.3 Parameter setting group handling15.3.1 IdentificationFunction description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberSetting group handling SETGRPS - -Parameter setting groups ACTVGRP - -15.3.2 ApplicationFour different groups of settings are available to optimize IED operation for differentpower system conditions. By creating and switching between fine tuned setting sets, eitherfrom the local HMI or configurable binary inputs, results in a highly adaptable IED thatcan cope with a variety of power system scenarios.Different conditions in networks with different voltage levels require highly adaptableprotection and control IEDs to best provide for dependability, security and selectivityrequirements. Protection IEDs operate with a higher degree of availability, especially, if1MRK 511 286-UUS A Section 15Basic IED functions329Application manual
