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CENELEC
EN 50124-2:2017

EN 50124-2:2017

Current

Current

The latest, up-to-date edition.

Railway applications - Insulation coordination - Part 2: Overvoltages and related protection

Published date

03-03-2017

Publisher

European Committee for Standards - Electrical

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European foreword
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Contact line network
5 Train line network
6 Tests
Annex A (informative) - Maximum value of voltage
        U according to duration
Annex ZZ (informative) - Relationship between this
         European Standard and the Essential
         Requirements of EU Directive 2008/57/EC
Bibliography

This European Standard applies to:-fixed installations (downstream of the secondary of the substation transformer) and rolling stock equipment linked to the contact line of one of the systems defined in EN 50163;-rolling stock equipment linked to a train line.This European Standard gives simulation and/or test requirements for protection against transient overvoltages of such equipment.Long-term overvoltages are not addressed in this document.

Committee
CLC/TC 9X
DevelopmentNote
Supersedes PREN 50124-2. (03/2017)
DocumentType
Standard
PublisherName
European Committee for Standards - Electrical
Status
Current
Supersedes

DD CLC/TS 50535:2010 Railway applications. Onboard auxiliary power converter systems
11/30213783 DC : 0 BS EN 50463-1 - RAILWAY APPLICATIONS - ENERGY MEASUREMENT ON BOARD TRAINS - PART 1: GENERAL
I.S. EN 50463-1:2017 RAILWAY APPLICATIONS - ENERGY MEASUREMENT ON BOARD TRAINS - PART 1: GENERAL
BS EN 50152-3-3:2016 Railway applications. Fixed installations. Particular requirements for a.c. switchgear Measurement, control and protection devices for specific use in a.c. traction systems. Voltage transformers
I.S. EN 50125-3:2003 RAILWAY APPLICATION - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 3: EQUIPMENT FOR SIGNALLING AND TELECOMMUNICATIONS
11/30235280 DC : 0 BS EN 50152-1 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 1: CIRCUIT-BREAKERS WITH NOMINAL VOLTAGE ABOVE 1 KV
PD CLC/TR 50646:2015 Railway Application. Fixed Installations. Specification for reversible d.c. substations
S.R. CLC/TR 50646:2015 RAILWAY APPLICATION - FIXED INSTALLATIONS - SPECIFICATION FORREVERSIBLE D.C. SUBSTATIONS
PREN 50152-3-2 : DRAFT 2015 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-2: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - SINGLE-PHASE CURRENT TRANSFORMERS
CEI EN 50125-2 : 2003 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 2: FIXED ELECTRICAL INSTALLATIONS
I.S. EN 50123-4:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 4: OUTDOOR D.C. DISCONNECTORS, SWITCH-DISCONNECTORS AND EARTHING SWITCHES
I.S. EN 50152-3-3:2016 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-3: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - VOLTAGE TRANSFORMERS
EN 50163 : 2004 COR 2013 RAILWAY APPLICATIONS - SUPPLY VOLTAGES OF TRACTION SYSTEMS
EN 50388 : 2012 COR 2013 RAILWAY APPLICATIONS - POWER SUPPLY AND ROLLING STOCK - TECHNICAL CRITERIA FOR THE COORDINATION BETWEEN POWER SUPPLY (SUBSTATION) AND ROLLING STOCK TO ACHIEVE INTEROPERABILITY
EN 50129 : 2003 COR 2010 RAILWAY APPLICATIONS - COMMUNICATION, SIGNALLING AND PROCESSING SYSTEMS - SAFETY RELATED ELECTRONIC SYSTEMS FOR SIGNALLING
EN 50125-3 : 2003 COR 2010 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 3: EQUIPMENT FOR SIGNALLING AND TELECOMMUNICATIONS
EN 50152-3-3:2016 Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Part 3-3: Measurement, control and protection devices for specific use in a.c. traction systems - Voltage transformers
EN 50152-3-2:2016 Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Part 3-2: Measurement, control and protection devices for specific use in a.c. traction systems - Current transformers
I.S. EN 50129:2003 RAILWAY APPLICATIONS - COMMUNICATION, SIGNALLING AND PROCESSING SYSTEMS - SAFETY RELATED ELECTRONIC SYSTEMS FOR SIGNALLING
BS EN 50152-1 : 2012 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 1: CIRCUIT-BREAKERS WITH NOMINAL VOLTAGE ABOVE 1 KV
UNE-EN 50152-2:2013 Railway applications - Fixed installations - Particular requirements for alternating current switchgear - Part 2: Disconnectors, earthing switches and switches with nominal voltage above 1 kV
UNE-EN 50463-1:2013 Railway applications - Energy measurement on board trains - Part 1: General
BS EN 50463-1:2017 Railway applications. Energy measurement on board trains General
03/318491 DC : DRAFT OCT 2003 EN 50163 - RAILWAY APPLICATIONS - SUPPLY VOLTAGES OF TRACTION SYSTEMS
BS EN 50163 : 2004 RAILWAY APPLICATIONS - SUPPLY VOLTAGES OF TRACTION SYSTEMS
13/30251582 DC : 0 BS EN 50617-2 - RAILWAYS APPLICATIONS - BASIC PARAMETERS OF TRAIN DETECTION SYSTEMS - PART 2: AXLE COUNTERS
BS EN 50125-1:2014 Railway applications. Environmental conditions for equipment Rolling stock and on-board equipment
UNE-EN 50125-1:2014 Railway applications - Environmental conditions for equipment - Part 1: Rolling stock and on-board equipment
BS EN 50123-2:2003 Railway applications. Fixed installations. D.C. switchgear D.C. circuit breakers
PREN 50388-1 : DRAFT 2017 RAILWAY APPLICATIONS - FIXED INSTALLATIONS AND ROLLING STOCK - TECHNICAL CRITERIA FOR THE COORDINATION BETWEEN TRACTION POWER SUPPLY AND ROLLING STOCK TO ACHIEVE INTEROPERABILITY - PART 1: GENERAL
12/30235267 DC : 0 BS EN 50125-1 - RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 1: EQUIPMENT ON BOARD ROLLING STOCK
15/30329543 DC : 0 BS EN 50463-1 - RAILWAY APPLICATIONS - ENERGY MEASUREMENT ON BOARD TRAINS - PART 1: GENERAL
EN 50123-7-2:2003 Railway applications - Fixed installations - D.C. switchgear - Part 7-2: Measurement, control and protection devices for specific use in d.c. traction systems - Isolating current transducers and other current measuring devices
BS EN 50123-1:2003 Railway applications. Fixed installations. D.C. switchgear General
UNE-EN 50388:2013 Railway Applications - Power supply and rolling stock - Technical criteria for the coordination between power supply (substation) and rolling stock to achieve interoperability
EN 50463-1:2017 Railway applications - Energy measurement on board trains - Part 1: General
S.R. CLC/TS 50535:2010 RAILWAY APPLICATIONS - ONBOARD AUXILIARY POWER CONVERTER SYSTEMS
BS EN 50129:2003 Railway applications. Communication, signalling and processing systems. Safety related electronic systems for signalling
I.S. EN 50388:2012 RAILWAY APPLICATIONS - POWER SUPPLY AND ROLLING STOCK - TECHNICAL CRITERIA FOR THE COORDINATION BETWEEN POWER SUPPLY (SUBSTATION) AND ROLLING STOCK TO ACHIEVE INTEROPERABILITY
I.S. EN 50123-7-2:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 7-2: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN D.C. TRACTION SYSTEMS - ISOLATING CURRENT TRANSDUCERS AND OTHER CURRENT MEASURING DEVICES
CLC/TS 50535:2010 Railway applications - Onboard auxiliary power converter systems
BS EN 50617-1:2015 Railway applications. Technical parameters of train detection systems for the interoperability of the trans-European railway system Track circuits
15/30314795 DC : 0 BS EN 50152-3-3 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-3: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - SINGLE-PHASE INDUCTIVE VOLTAGE TRANSFORMERS
PREN 50152-3-3 : DRAFT 2015 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-3: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - SINGLE-PHASE INDUCTIVE VOLTAGE TRANSFORMERS
BS EN 50123-7-1:2003 Railway applications. Fixed installations. d.c. switchgear. Measurement, control and protection devices for specific use in d.c. traction systems Measurement, control and protection devices for specific use in d.c. traction systems. Application guide
BS EN 50125-3:2003 Railway applications. Environmental conditions for equipment Equipment for signalling and telecommunications
CEI EN 50123-1 : 2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 1: GENERAL
PREN 50463-1 : DRAFT 2015 RAILWAY APPLICATIONS - ENERGY MEASUREMENT ON BOARD TRAINS - PART 1: GENERAL
CEI EN 50388 : 2012 RAILWAY APPLICATIONS - POWER SUPPLY AND ROLLING STOCK - TECHNICAL CRITERIA FOR THE COORDINATION BETWEEN POWER SUPPLY (SUBSTATION) AND ROLLING STOCK TO ACHIEVE INTEROPERABILITY
PREN 50152-1 : DRAFT 2011 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 1: CIRCUIT-BREAKERS WITH NOMINAL VOLTAGE ABOVE 1 KV
I.S. EN 50152-3-2:2016 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-2: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - SINGLE-PHASE CURRENT TRANSFORMERS
CEI EN 50125-1 : 2014 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 1: ROLLING STOCK AND ON-BOARD EQUIPMENT
PREN 50129 : DRAFT 2000 RAILWAY APPLICATIONS - SAFETY RELATED ELECTRONIC SYSTEMS FOR SIGNALLING
IEC 61992-1:2006+AMD1:2014 CSV Railway applications - Fixed installations - DC switchgear - Part 1:General
I.S. EN 50163:2004 RAILWAY APPLICATIONS - SUPPLY VOLTAGES OF TRACTION SYSTEMS
UNE-EN 50152-3-2:2016 Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Part 3-2: Measurement, control and protection devices for specific use in a.c. traction systems - Current transformers
15/30314792 DC : 0 BS EN 50152-3-2 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-2: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - SINGLE-PHASE CURRENT TRANSFORMERS
CEI CLC/TS 50535 : 2011 RAILWAY APPLICATIONS - ONBOARD AUXILIARY POWER CONVERTER SYSTEMS
16/30339594 DC : DRAFT DEC 2016 BS EN 50129 - RAILWAY APPLICATIONS - COMMUNICATION, SIGNALLING AND PROCESSING SYSTEMS - SAFETY RELATED ELECTRONIC SYSTEMS FOR SIGNALLING
BS EN 50617-2:2015 Railway Applications. Technical parameters of train detection systems for the interoperability of the trans-European railway system Axle counters
17/30356581 DC : 0 BS EN 50388-1 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS AND ROLLING STOCK - TECHNICAL CRITERIA FOR THE COORDINATION BETWEEN TRACTION POWER SUPPLY AND ROLLING STOCK TO ACHIEVE INTEROPERABILITY - PART 1: GENERAL
UNE-EN 50617-1:2015 Railway applications - Technical parameters of train detection systems for the interoperability of the trans-European railway system - Part 1: Track circuits
CEI EN 50125-3 : 2004 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 3: EQUIPMENT FOR SIGNALLING AND TELECOMMUNICATIONS
11/30235283 DC : 0 BS EN 50152-2 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 2: DISCONNECTORS, EARTHING SWITCHES AND SWITCHES WITH NOMINAL VOLTAGE ABOVE 1 KV
UNE-EN 50152-1:2013 Railway applications - Fixed installations - Particular requirements for alternating current switchgear - Part 1: Circuit-breakers with nominal voltage above 1 kV
I.S. EN 50123-3:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 3: INDOOR D.C. DISCONNECTORS, SWITCH-DISCONNECTORS AND EARTHING SWITCHES
BS EN 50152-2:2012 Railway applications. Fixed installations. Particular requirements for alternating current switchgear Disconnectors, earthing switches and switches with nominal voltage above 1 kV
I.S. EN 50123-1:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - GENERAL
I.S. EN 50152-1:2012 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 1: CIRCUIT-BREAKERS WITH NOMINAL VOLTAGE ABOVE 1 KV
I.S. EN 50617-2:2015 RAILWAY APPLICATIONS - TECHNICAL PARAMETERS OF TRAIN DETECTION SYSTEMS FOR THE INTEROPERABILITY OF THE TRANS-EUROPEAN RAILWAY SYSTEM - PART 2: AXLE COUNTERS
I.S. EN 50617-1:2015 RAILWAY APPLICATIONS - TECHNICAL PARAMETERS OF TRAIN DETECTION SYSTEMS FOR THE INTEROPERABILITY OF THE TRANS-EUROPEAN RAILWAY SYSTEM - PART 1: TRACK CIRCUITS
I.S. EN 50125-2:2003 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 2: FIXED ELECTRICAL INSTALLATIONS
I.S. EN 50123-2:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - D.C. CIRCUIT BREAKERS
PREN 50152-2 : DRAFT 2011 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 2: DISCONNECTORS, EARTHING SWITCHES AND SWITCHES WITH NOMINAL VOLTAGE ABOVE 1 KV
I.S. EN 50152-2:2012 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 2: DISCONNECTORS, EARTHING SWITCHES AND SWITCHES WITH NOMINAL VOLTAGE ABOVE 1 KV
CEI EN 50152-2 : 2013 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 2: DISCONNECTORS, EARTHING SWITCHES AND SWITCHES WITH NOMINAL VOLTAGE ABOVE 1 KV
I.S. EN 50125-1:2014 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 1: ROLLING STOCK AND ON-BOARD EQUIPMENT
I.S. EN 50123-7-3:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 7-3: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN D.C. TRACTION SYSTEMS - ISOLATING VOLTAGE TRANSDUCERS AND OTHER VOLTAGE MEASURING DEVICES
UNE-EN 50152-3-3:2016 Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Part 3-3: Measurement, control and protection devices for specific use in a.c. traction systems - Voltage transformers
EN 50125-2:2002/corrigendum:2010 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 2: FIXED ELECTRICAL INSTALLATIONS
CEI EN 50129 : 2004 RAILWAY APPLICATIONS - COMMUNICATION, SIGNALLING AND PROCESSING SYSTEMS - SAFETY RELATED ELECTRONIC SYSTEMS FOR SIGNALLING
EN 50123-7-3:2003 Railway applications - Fixed installations - D.C. switchgear - Part 7-3: Measurement, control and protection devices for specific use in d.c. traction systems - Isolating voltage transducers and other voltage measuring devices
BS EN 50123-7-3:2003 Railway applications. Fixed installations. d.c. switchgear. Measurement, control and protection devices for specific use in d.c. traction systems Isolating voltage transducers and other voltage measuring devices
PREN 50125-1 : DRAFT 2012 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 1: EQUIPMENT ON BOARD ROLLING STOCK
05/30133969 DC : DRAFT MAY 2005
IEC 60850:2014 Railway applications - Supply voltages of traction systems
PREN 50617-2 : DRAFT 2013 RAILWAYS APPLICATIONS - BASIC PARAMETERS OF TRAIN DETECTION SYSTEMS - PART 2: AXLE COUNTERS
00/241939 DC : DRAFT MAY 2000 PREN 50129 - RAILWAY APPLICATIONS - SAFETY RELATED ELECTRONIC SYSTEMS FOR SIGNALLING
BS EN 50125-2:2002 Railway applications. Environmental conditions for equipment Fixed electrical installations
BS EN 50388:2012 Railway Applications. Power supply and rolling stock. Technical criteria for the coordination between power supply (substation) and rolling stock to achieve interoperability
CEI EN 50463-1 : 2013 RAILWAY APPLICATIONS - ENERGY MEASUREMENT ON BOARD TRAINS - PART 1: GENERAL
BS EN 50123-7-2:2003 Railway applications. Fixed installations. d.c. switchgear. Measurement, control and protection devices for specific use in d.c. traction systems Isolating current transducers and other current measuring devices
EN 50152-2:2012 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 2: DISCONNECTORS, EARTHING SWITCHES AND SWITCHES WITH NOMINAL VOLTAGE ABOVE 1 KV
EN 50123-1:2003 Railway applications - Fixed installations - D.C. switchgear - Part 1: General
EN 50123-7-1:2003 Railway applications - Fixed installations - D.C. switchgear - Part 7-1: Measurement, control and protection devices for specific use in d.c. traction systems - Application guide
EN 50123-4:2003/A1:2013 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 4: OUTDOOR D.C. DISCONNECTORS, SWITCH-DISCONNECTORS AND EARTHING SWITCHES
EN 50123-2:2003 Railway applications - Fixed installations - D.C. switchgear - Part 2: D.C. circuit breakers
EN 50125-1:2014 Railway applications - Environmental conditions for equipment - Part 1: Rolling stock and on-board equipment
EN 50152-1 : 2012 AMD 1 2013 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 1: CIRCUIT-BREAKERS WITH NOMINAL VOLTAGE ABOVE 1 KV
CLC/TR 50646:2015 Railway Application - Fixed Installations - Specification for reversible d.c. substations
EN 50617-1:2015 Railway applications - Technical parameters of train detection systems for the interoperability of the trans-European railway system - Part 1: Track circuits
EN 50617-2:2015/AC:2016 RAILWAY APPLICATIONS - TECHNICAL PARAMETERS OF TRAIN DETECTION SYSTEMS FOR THE INTEROPERABILITY OF THE TRANS-EUROPEAN RAILWAY SYSTEM - PART 2: AXLE COUNTERS
EN 50123-3:2003/A1:2013 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 3: INDOOR D.C. DISCONNECTORS, SWITCH-DISCONNECTORS AND EARTHING SWITCHES
CEI EN 50463-1 : 2018 Railway applications - Energy measurement on board trains - Part 1: General

IEC 60099-4:2014 Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems
EN 50526-1:2012 Railway applications - Fixed installations - D.C. surge arresters and voltage limiting devices - Part 1: Surge arresters
2008/57/EC : 2008 AMD 5 2014 DIRECTIVE 2008/1957/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL OF 17 JUNE 2008 ON THE INTEROPERABILITY OF THE RAIL SYSTEM WITHIN THE COMMUNITY (RECAST) (TEXT WITH EEA RELEVANCE)
EN 60099-4:2014 Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems
EN 50533 : 2011 AMD 1 2016 RAILWAY APPLICATIONS - THREE-PHASE TRAIN LINE VOLTAGE CHARACTERISTICS
IEC 60099-1:1991+AMD1:1999 CSV Surge arresters - Part 1: Non-linear resistor type gapped surge arresters for a.c. systems
EN 60664-1:2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
EN 50163 : 2004 COR 2013 RAILWAY APPLICATIONS - SUPPLY VOLTAGES OF TRACTION SYSTEMS
UIC 550 : 11ED 2005 POWER SUPPLY INSTALLATIONS FOR PASSENGER STOCK
IEC 60664-1:2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests

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