Time Synchronization
Accuracy
The accuracy of the used SNTP server and the excellence of its reference clock influences the accuracy of the
protection relay's clock.
For further information about accuracy refer to the chapter “Specifications”.
With each transmitted time information, the SNTP server also sends information about its accuracy:
Stratum: The stratum indicates over how many interacting NTP-Servers the used SNTP server is connected to
an atomic or radio controlled clock.
Precision: This indicates the accuracy of the system time provided by the SNTP server.
Additionally the performance of the connected network (traffic and data package transmission times) has an
influence on the accuracy of the time synchronisation.
Recommended is a locally installed SNTP server with an accuracy of
≤200 µsec. If this cannot be realised, the
connected server's excellence can be checked in the menu [Operation/Status Display/TimeSync]
:
The server quality gives information about the accuracy of the used server. The quality should be GOOD or
SUFFICIENT. A server with BAD quality should not be used, because this could cause fluctuations in time
synchronisation.
The network quality gives information about the network's load and data package transmission time. The quality
should be GOOD or SUFFICIENT. A network with BAD quality should not be used, because this could cause
fluctuations in time synchronisation.
Using two SNTP Servers
When configuring two SNTP servers, the device always synchronizes to server 1 by default.
If server 1 fails, the device automatically switches to server 2.
When (after a failure) server 1 recovers, the device switches back to server 1.
SNTP Commissioning
Activate the SNTP time synchronisation by means of the menu [Device Para/ Time/ TimeSync]:
Select »
SNTP« in the time synchronisation menu.
Set the IP address of the first server in the SNTP menu.
Set the IP address of the second server, if available.
Set all configured servers to “active”.
402
MCDLV4
DOK-HB-MCDLV4-2E
Summary of Contents for HighPROtec MCDLV4
Page 3: ...Order Code Order Code 3 MCDLV4 DOK HB MCDLV4 2E...
Page 47: ...Installation and Connection 47 MCDLV4 DOK HB MCDLV4 2E...
Page 164: ...Input Output and LED Settings 164 MCDLV4 DOK HB MCDLV4 2E...
Page 433: ...Parameters 433 MCDLV4 DOK HB MCDLV4 2E...
Page 457: ...Device Parameters 457 MCDLV4 DOK HB MCDLV4 2E...
Page 473: ...Blockings 473 MCDLV4 DOK HB MCDLV4 2E...
Page 988: ...Protective Elements 988 MCDLV4 DOK HB MCDLV4 2E P P Q P Q P Q Q Q P S S...
Page 989: ...Protective Elements 989 MCDLV4 DOK HB MCDLV4 2E Pr Q P Q P Qr...
Page 1023: ...Protective Elements 1023 MCDLV4 DOK HB MCDLV4 2E...
