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TB/T 2120-1990 English PDF

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TB/T 2120-1990: General Technical Specifications for Railway Signal AC Relay
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TB/T 2120-1990English279 Add to Cart 3 days [Need to translate] General Technical Specifications for Railway Signal AC Relay   TB/T 2120-1990

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Basic data

Standard ID TB/T 2120-1990 (TB/T2120-1990)
Description (Translated English) General Technical Specifications for Railway Signal AC Relay
Sector / Industry Railway & Train Industry Standard (Recommended)
Classification of Chinese Standard S61;L25
Word Count Estimation 8,868
Date of Issue 8/20/1990
Date of Implementation 12/1/1990
Adopted Standard AAR 6.1.35-1983, NEQ; UIC 736-1974, NEQ
Summary This standard specifies the railway signal AC relay classification, technical requirements, test methods, inspection rules, marking, packaging, transport and storage. This standard applies to all new railway signaling equipment designed for AC relay, that is, after the armature coil power cargo wing and contact system automatically returns to the initial position of the relay. This standard is a new relay design, production and use basis, but also to improve the basis for both relays.

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