ABB Relion 670 series - Glossary of Technical Terms; AES (Advanced Encryption Standard); CAM (Central Account Management)

Example of transmission delay and asymmetry information on the
local HMI
IED A IED B
0.4 ms transmission delay and 3.5 ms asymmetric delay in test set-up
IEC08000440-1-en.vsdx
IEC08000440 V1 EN-US
Figure 82: Example test set-up with specified transmission and asymmetric
delays
Table 24: Asymmetric delay settings in echo mode
Echo mode
Setting in IED A Setting in IED B
AsymDelay –3.1 ms AsymDelay 3.1 ms
Table 25: Transmission and asymmetric delay values in echo mode
Echo mode
Service values in IED A Service values in IED B
TransmDelay 0.4 ms TransmDelay 3.5 ms
AsymDelay –3.1 ms (same as set
value)
AsymDelay 3.1 ms (same as set
value)
Table 26: Actual transmission and asymmetric delay values in GPS mode
GPS mode
Service values in IED A Service values in IED B
TransmDelay 0.4 ms TransmDelay 3.5 ms
AsymDelay –3.1 ms AsymDelay 3.1 ms
Table 27: Information available on the local HMI (2Mb LDCM)
LHMI info
Description
Setting/signal Normal
(example)
Faulty
(example)
Specification
NoOfShInterr 50 - Counter No of short interruptions, 20-50 ms
NoOfMedInterr 10 - Counter No of medium interruptions, 50-200
ms
NoOfLongInterr 5 - Counter Number of long interruptions, > 200
ms
Table continues on next page
1MRK 505 382-UEN B Section 5
Communication set-up
Communication set-up 670/650 series 2.2 95
Application Guide