Hitachi 670 Series Application Guide

Name: Hitachi 670 Series
Brand: Hitachi
Rating: 4 (1 reviews)

102 pages

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Table of Contents7
Introduction11
This Manual11
Intended Audience11
Product Documentation11
Product Documentation Set11
Document Revision History12
Related Documents13
Document Symbols and Conventions15
Symbols15
Document Conventions15
Telecommunication Networks and Line Differential Protection17
Overview17
Telecommunication Network Types17
Telecommunication Networks with Symmetric or Fixed Routes18
Maximum Time Deviation between Internal Clocks19
Setting the Maximum Time Deviation19
Reference Clock Deviation from the Set Maximum Time Deviation20
Longer Route Switching Interruptions21
Detecting Accumulated Time Delay Changes with Echo Timing21
Common Time Synchronization23
Design of the Time System (Clock Synchronization)23
Time Synchronization Using a Built-In GPS Receiver24
Time Synchronization Using IRIG-B25
Analog and Binary Signal Transfer for Line Differential Protection27
Communication Channels for Line Differential Protection27
Communication between Channels Via Line Data Communication Module28
Configuration of Analog Signals28
Configuration of Analog Inputs29
Configuration of Output Signals30
Configuration of Redundant Channels31
Link Forward33
Application Configuration ACT34
Configurations with Power Transformers in the Protected Zone35
Line Differential Protection L3CPDIF, L6CPDIF, LT3CPDIF, LT6CPDIF35
Power Transformers in the Protected Zone35
Line Differential Protection L4CPDIF37
Possible Configurations37
Setting Examples38
Line Differential Protection L3CPDIF, L6CPDIF, LT3CPDIF, LT6CPDIF38
Line Differential Protection L4CPDIF47
Setting Example with a Two-End Power Line47
Configuration of Binary Signals51
Operation Principle51
Configuration of Binary Inputs and Outputs52
Configuration of Binary Inputs and Outputs Via ACT52
Configuration of Binary Inputs and Outputs Via SMT54
Binary Output Signals57
Setting Guidelines60
Settings64
Communication Set-Up69
Communication Alternatives69
Communication Channels69
Fibre-Optic Communication Interfaces with C37.94 Protocol71
Galvanic X.21 Line Data Communication (X.21-LDCM)74
Introduction74
Design74
Functionality76
Technical Data76
Communication Via Built-In X.21 Galvanic Interface77
Service Settings for the Line Differential Protection IED with X.21 Galvanic Interface77
PDH Telecommunication Via C37.94 Interface to External Transceiver C37.94-X.2177
PDH Telecommunication Via C37.94 Interface to Transceiver 21-21678
Communication Requirements78
Communication Structure Via C37.94 Interface to Transceiver 21-21679
Setting up Transceiver 21-21679
Power-Up and LED Statuses with Transceiver 21-21681
Service Settings82
Service Settings for the Line Differential Protection IED82
Service Settings for Transceiver 21-21683
Earthing83
Communication Structure for Laboratory Testing84
PDH/SDH Telecommunication Via C37.94 Interface to Transceiver 21-21985
Communication Requirements85
Communication Structure with Transceiver 21-219 Port Synchronized from SDH Master Clock85
Communication Structure with PDH/SDH Port Synchronized from Transceiver 21-21986
Setting up Transceiver 21-21987
Power-Up and LED Statuses with Transceiver 21-21989
Service Settings90
Service Settings for the Line Differential Protection IED90
Service Settings for Transceiver 21-21991
Earthing91
Communication Structure for Laboratory Testing92
Communication Status and Fault Tracing92
Communication Status on the Line Differential Protection IED92
Detecting Communication Faults on Transceiver 21-21695
Detecting Communication Faults on Transceiver 21-21995
Detecting Communication Faults through Loop-Back Testing96
Appendix99
Sample Specification of Communication Requirements99

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Hitachi 670 Series Specifications

General

Brand	Hitachi
Model	670 Series
Category	Control Unit
Language	English

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Table of Contents

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