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YD/T 741-2002 English PDF

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YD/T 741-2002: Specification of Positive Temperature Coefficient (PTC) thermistors for the over-current protection of communications installations

YD/T 741: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
YD/T 741-2002English529 Add to Cart 3 days [Need to translate] Specification of Positive Temperature Coefficient (PTC) thermistors for the over-current protection of communications installations   YD/T 741-2002
YD/T 741-1995English479 Add to Cart 4 days [Need to translate] (Communications equipment overcurrent protection with a positive temperature coefficient (PTC) thermistors technical conditions) Obsolete YD/T 741-1995

PDF similar to YD/T 741-2002


Standard similar to YD/T 741-2002

GB/T 31274   GB/T 6346.14   GB/Z 40842   

Basic data

Standard ID YD/T 741-2002 (YD/T741-2002)
Description (Translated English) Specification of Positive Temperature Coefficient (PTC) thermistors for the over-current protection of communications installations
Sector / Industry Telecommunication Industry Standard (Recommended)
Classification of Chinese Standard L13
Word Count Estimation 15,175
Date of Issue 2002-07-22
Date of Implementation 2002-07-22
Older Standard (superseded by this standard) YD/T 741-1995
Adopted Standard ITU-T K.30, NEQ
Summary This standard specifies the communication device overcurrent protection with directly heated positive step-function temperature coefficient (PTC) thermistor (hereinafter referred to as PTC thermistor) terminology, product classification, technical requirements, test methods, inspection rules, logo, packaging, transportation and storage rules. This standard applies to switches, access equipment, main distribution frame overcurrent protection PTC thermistor detection and acceptance. Other communications equipment (such as communication terminal) Overcurrent protection PTC thermistor can also refer to the use. This standard does not involve the size of the PTC thermistor, fixtures and installation.

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