ABB RELION 650 Series Applications Manual page 339

1MRK 505 363-UEN A
AsymDelay : The asymmetry is defined as transmission delay minus receive delay. If a fixed
asymmetry is known, the
AsymDelay is properly set. From the definition follows that the asymmetry will always be
positive in one end, and negative in the other end.
AnalogLatency : Local analog latency; A parameter which specifies the time delay (number of
samples) between actual sampling and the time the sample reaches the local communication
module, LDCM. The parameter shall be set to 2 when transmitting analog data from the .
RemAinLatency : Remote analog latency; This parameter corresponds to the LocAinLatency set
in the remote IED.
MaxTransmDelay : Data for maximum 40 ms transmission delay can be buffered up. Delay
times in the range of some ms are common. It shall be noticed that if data arrive in the wrong
order, the oldest data will just be disregarded.
CompRange : The set value is the current peak value over which truncation will be made. To set
this value, knowledge of the fault current levels should be known. The setting is not overly
critical as it considers very high current values for which correct operation normally still can be
achieved.
MaxtDiffLevel : Allowed maximum time difference between the internal clocks in respective line
end.
Application manual
Echo synchronization method can be used if the parameter
Section 18
Remote communication
333