The G.703 E1, 2 Mbit shall be set according to ITU-T G.803, G.810-13
•
One master clock for the actual network
•
The actual port Synchronized to the SDH system clock at 2048 kbit
•
Synchronization; bit synchronized, synchronized mapping
•
Maximum clock deviation <±50 ppm nominal, <±100 ppm operational
•
Jitter and Wander according to ITU-T G.823 and G.825
•
Buffer memory <250 μs, <100 μs asymmetric difference
•
Format.G 704 frame, structured etc.Format.
•
No CRC-check
Synchronization in PDH systems connected to SDH systems
•
Independent synchronization, asynchronous mapping
•
The actual SDH port must be set to allow transmission of the master clock
from the PDH-system via the SDH-system in transparent mode.
•
Maximum clock deviation <±50 ppm nominal, <±100 ppm operational
•
Jitter and Wander according to ITU-T G.823 and G.825
•
Buffer memory <100 μs
•
Format: Transparent
•
Maximum channel delay
•
Loop time <40 ms continuous (2 x 20 ms)
IED with echo synchronization of differential clock (without GPS clock)
•
Both channels must have the same route with maximum asymmetry of 0,2-0,5
ms, depending on set sensitivity of the differential protection.
•
A fixed asymmetry can be compensated (setting of asymmetric delay in built
in HMI or the parameter setting tool PST).
IED with GPS clock
•
Independent of asymmetry.
22.6
IEC/UCA 61850-9-2LE Merging unit requirements
SEMOD166590-11 v5
The merging units that supply the IED with measured values via the process bus
must fulfill the IEC/UCA 61850-9-2LE standard.
This part of the IEC 61850 is specifying “Communication Service Mapping
(SCSM) – Sampled values over ISO/IEC 8802”, in other words – sampled data
over Ethernet. The 9-2 part of the IEC 61850 protocol uses also definitions from
7-2, “Basic communication structure for substation and feeder equipment –
Abstract communication service interface (ACSI)”. The set of functionality
implemented in the IED (IEC/UCA 61850-9-2LE) is a subset of the IEC
Section 22
1MRK 506 375-UEN A
Requirements
486
Railway application RER670 2.2 IEC
Application manual
Summary of Contents for RELION RER670
Page 1: ...RELION 670 SERIES Railway application RER670 Version 2 2 IEC Application manual ...
Page 2: ......
Page 22: ...16 ...
Page 48: ...42 ...
Page 70: ...64 ...
Page 80: ...74 ...
Page 100: ...94 ...
Page 210: ...204 ...
Page 364: ...358 ...
Page 384: ...378 ...
Page 468: ...462 ...
Page 494: ...488 ...
Page 504: ...498 ...
Page 505: ...499 ...