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 87: Example test set-up with specified transmission and asymmetric delays
Table 27: 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 28: 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 29: 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 30: 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
CommStatus
OK
NoRXD
Status
Communication status/no of received
messages
COMFAIL
0
1
Status
Communication failure, differential
protection blocked. Analog values are
substituted with zero, ref. disturbance
recorder
Table continues on next page
1MRK 505 382-UEN E
Section 5
Communication set-up
Communication set-up, 670/650 series
85
Application Guide
© Copyright 2017 ABB. All rights reserved
Summary of Contents for Relion 670 series
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