GB/T 25890.3-2010 Railway applications—Fixed installations—DC switchgear—Part 3:Indoor d.c.disconnectors switch disconnectors and earthing switches (Text of Document is in English)

01/06/2011

29P

$200.00 USD

Contents
Foreword
1 Scope
2 Normative References
3 Terms and definitions
4 Service requirements
5 Characteristics of the unit
5.1 Enumeration of the characteristics
5.2 Type of unit
5.3 Rated values
5.4 Class of use
5.5 Control circuits
5.6 Auxiliary contacts and circuits
6 Construction
6.1 General
6.2 Materials
6.3 Arcing contacts
6.4 Clearances and creepage distances
6.5 Primary connections
6.6 Location of the primary connections
6.7 Earthing terminal
6.8 Manual operation means
6.9 Unit enclosures
6.10 Temperature-rises
6.11 Dielectric strength
6.12 Electrical and mechanical endurance
6.13 Operation
6.14 Corrosion protection
6.15 Noise emission
6.16 Cooling
6.17 Servo-control (where applicable)
6.18 Other facilities
7 Information and marking
7.1 Information
7.2 Marking
8 Tests
8.1 General
8.2 Applicable tests and test sequence
8.3 Performance of tests
Annex A (Informative) Information required