NF EN 50123-5 : 2004
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 5: SURGE ARRESTERS AND LOW-VOLTAGE LIMITERS FOR SPECIFIC USE IN D.C. SYSTEMS
02-01-2015
01-12-2013
Introduction
1 Common matters
1.1 Scope
1.2 Normative references
2 Non-linear resistor type gapped surge arresters
2.1 General
2.2 Definitions
2.3 Marking
2.4 Preferred ratings
2.5 Requirements
2.6 General testing procedure
2.7 Routine and acceptance tests
2.8 Type tests
3 Artificial pollution testing of surge arresters
4 Metal-oxide surge arresters without gaps
4.1 General
4.2 Definitions
4.3 Marking
4.4 Preferred ratings
4.5 Requirements
4.6 General testing procedure
4.7 Type tests
4.8 Routine and acceptance tests
5 Low-voltage limiters for specific use in d.c. systems
5.1 General
5.2 Definitions
5.3 Marking and classification
5.4 Preferred ratings
5.5 Requirements
5.6 Routine and acceptance tests
5.7 Type tests
Annex A (informative) Typical information given with
enquiries and tenders valid for all types
covered in this European Standard
Annex B (informative) High voltage filters for protection
against voltage surges
Figures
Tables
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