This standard specifies the product classification, rated parameters, usage conditions, technical requirements, test methods, test rules, marking, packaging, transportation and storage of relays for rolling stock (including EMUs). This standard applies to relays used for various protection, control and measurement purposes in main circuits, auxiliary circuits and control circuits on rolling stock. Relays used on urban rail vehicles can be used as a reference. This standard does not apply to relays used in communication signaling systems on rolling stock.
TB/T 2762-2010 history
2017TB/T 2762-2017 Rolling stock electrical equipment relays
2010TB/T 2762-2010 General technical specification of rolling stock relays
1997TB/T 2762-1996 Basic Technical Conditions of Locomotive Relays