YD/T 741-2002 in English
VALIDSpecification of Positive Temperature Coefficient (PTC) thermistors for the over-current protection of communications installations
- Issued on:2002-07-22
- Implemented on:2002-07-22
- File Format:PDF
- Delivery:Via email within 1~3 business days
$175.00
| Standard No: | YD/T 741-2002 |
| Document status: | VALID |
| Title in English: | Specification of Positive Temperature Coefficient (PTC) thermistors for the over-current protection of communications installations |
| Title in Chinese: | 通信设备过电流保护用正温度系数(PTC)热敏电阻器技术要求 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2002-07-22 |
| Implemented on: | 2002-07-22 |
| Superseding: |
YD/T 741-1995 Specification of Positive Temperature Coefficient (PTC) thermistors for the over-current protection of communications installations
|
| Chinese Classification: | L13-Resistor |
| Professional Classification: | YD-Telecommunication |
| Related Keywords: | positive temperature coefficient
ptc thermistors step-type positive temperature coefficient over-current protection overcurrent protection |
| Related Topics: | Electrical temperature requirements
Temperature Coefficient Equipment requirements for temperature YD/T 741-2002 Energy storage battery thermistor requirements yd/t741-2002 yd/t1238-2002 |
本标准规定了通信设备过流保护用直热式阶跃型正温度系数(PTC)热敏电阻嚣(以下简称PTC热敏电阻器)的名词术语、产品分类、技术要求、试验方法、检验规则、标志、包装、运输及贮存等规则。本标准适用于交换机、接入网设备、总配线架过电流保护用PTC热敏电阻器的检测和验收。其他通信设备(如通信终端)过电流保护用PTC热敏电阻器也可参照使用。本标准不涉及PTC热敏电阻器的尺寸、夹具和安装。
Scope
This standard specifies the terminology, product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of directly heated step-type positive temperature coefficient (PTC) thermistors for overcurrent protection of communication equipment. rule. This standard applies to the detection and acceptance of PTC thermistors used for overcurrent protection in switches, access network equipment, and main distribution frames. PTC thermistors for overcurrent protection of other communication equipment (such as communication terminals) can also be used as a reference. This standard does not cover the dimensions, fixtures and installation of PTC thermistors.
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