1 Scope
This document specifies the terms and definitions, classification, service conditions,
characteristics and test methods for transformers and inductors on board rolling stock.
This document is applicable to traction and auxiliary power transformers installed
on board rolling stock and to the various types of power inductors inserted in the traction and auxiliary circuits of rolling stock, of dry or liquid-immersed
design.
This document is also applicable to the traction transformers of three-phase AC line-side powered vehicles and to the transformers inserted in the single-phase or
polyphase auxiliary circuits of vehicles, after agreement between purchaser and manufacturer.
This document does not apply to instrument transformers, transformers of a rated output
below 1 kVA single-phase or 5 kVA poly-phase, and inductors of a rated output below 1 kVAR single-phase or 5 kVAR poly-phase on board rolling
stock.
This document does not cover accessories such as tap changers, resistors, heat exchangers,
fans, etc., intended for mounting on transformers or inductors, which are tested separately according to the relevant rules.
NOTE Items requiring agreement between the delivery parties and items of supplementary
information and specification particulars to be provided by the ordering party or
manufacturer are given in Annex A.