This part specifies the general service conditions and requirements for all electric equipment installed in power circuits, auxiliary circuits, control and indicating circuits etc., on rolling stock.
Note: certain of these rules may, after agreement between the user and the manufacturer, be used for electrical equipment installed on other vehicles such as mine locomotives, trolley buses, etc.
The purpose of this standard is to harmonize as far as practicable all rules and requirements of a general nature applicable to electric equipment for rolling stock. This is in order to obtain uniformity of requirements and tests throughout the corresponding range of equipment to avoid the need for testing to different standards.
All requirements relating to
- the environmental stresses expected during the normal service conditions;
- the construction;
- the performance and the associated tests which can be considered as general;
have therefore been gathered in this standard together with specific subjects of wide interest and application, for example temperature rise, dielectric properties, etc.
2 Normative References
The following normative documents contain provisions which, through reference in this part, constitute provisions of GB/T 21413. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 311.1-1997 Insulation co-ordination for high voltage transmission and distribution equipment (neq IEC 60071-1: 1993)
GB/T 2423.1-2001 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Tests A: Cold(idt IEC 60068-2-1: 1990)
GB/T 2423.2-2001 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test B: Dry Heat(idt IEC 60068-2-2: 1974)
GB/T 2423.3-1993 Basic Environmental Testing Procedures for Electric and Electronic Products- Test Ca: Damp heat, Steady state(eqv IEC 60068-2-3: 1969)
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3 Terms and Definitions
For the purpose of this part, the following terms and definitions apply.
3.1 General
3.1.1
rolling stock
general term covering all vehicles with or without motors
3.1.2
vehicle
general term denoting any single item of rolling stock, e.g. a locomotive, a coach or a wagon
3.2 Circuits
3.2.1
power circuit
circuit carrying the current of the machines and equipment, such as the convertors and tractionmotors, which transmit the traction output
