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: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YD/T 741-2002	529	Add to Cart	3 days	Specification of Positive Temperature Coefficient (PTC) thermistors for the over-current protection of communications installations
YD/T 741-1995	479	Add to Cart	4 days	(Communications equipment overcurrent protection with a positive temperature coefficient (PTC) thermistors technical conditions)	Obsolete

Similar standards

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Older Standard (superseded by this standard): YD/T 741-1995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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