33.040.99 – Other equipment for telecommunication systems – PDF Standards Store

JIS C 5381-311:2004

Wed, 06 Nov 2024 02:02:04 +0000

Components for Low-Voltage Surge Protective Devices - Specification for Gas Discharge Tubes (GDT)

Published By	Publication Date	Number of Pages
JIS	2004-03-20	21

IEC 61643-352:2018

Tue, 05 Nov 2024 19:29:13 +0000

IEC 61643-352:2018 covers the application of surge isolation transformers (SITs) that are used in telecommunication transformer applications with signal levels up to 400 V peak to peak. These transformers have a high rated impulse voltage with or without screen between the input and output windings. SITs are components for surge protection and are used to mitigate the onward propagation of common-mode voltage surges. This document describes SITs' selection, application principles and related information. This document does not cover power line communication transformers.

IEC 61643-351:2016

Tue, 05 Nov 2024 19:29:12 +0000

Composants pour parafoudres basse tension - Partie 351 : Exigences de performance et méthodes d'essai pour les transformateurs d'isolement contre les surtensions dans les réseaux de signalisation et de télécommunications

Published By	Publication Date	Number of Pages
IEC	2016-10-28	58

IEC 61643-312:2013

Tue, 05 Nov 2024 19:29:06 +0000

Composants pour parafoudres basse tension - Partie 312 : principes de choix et d'application pour les tubes à décharge de gaz

Published By	Publication Date	Number of Pages
IEC	2013-04-22	48

IEC 61643-311:2013

Tue, 05 Nov 2024 19:29:05 +0000

IEC 61643-311:2013 is applicable to gas discharge tubes (GDT) used for overvoltage protection in telecommunications, signalling and low-voltage power distribution networks with nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c..They are defined as a gap, or several gaps with two or three metal electrodes hermetically sealed so that gas mixture and pressure are under control. They are designed to protect apparatus or personnel, or both, from high transient voltages. This standard contains a series of test criteria, test methods and test circuits for determining the electrical characteristics of GDTs having two or three electrodes. This standard does not specify requirements applicable to complete surge protective devices, nor does it specify total requirements for GDTs employed within electronic devices, where precise coordination between GDT performance and surge protective device withstand capability is highly critical. This second edition of IEC 61643-311 cancels and replaces the first edition published in 2001. It constitutes a technical revision. Specific changes with respect to the previous edition are: Addition of performance values. Key words: gas discharge tubes (GDT), overvoltage protection in telecommunications, signalling and low-voltage power distribution networks, nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c.

UNE-EN IEC 61643-352:2018

Tue, 05 Nov 2024 11:55:08 +0000

Components for low-voltage surge protection - Part 352: Selection and application principles for telecommunications and signalling network surge isolation transformers (SITs)

Published By	Publication Date	Number of Pages
AENOR	2018-05-01	29

UNE-EN 62657-2:2017

Tue, 05 Nov 2024 11:48:52 +0000

Industrial communication networks - Wireless communication networks - Part 2: Coexistence management

Published By	Publication Date	Number of Pages
AENOR	2017-08-01	100

UNE-EN 62657-2:2017/A1:2019

Tue, 05 Nov 2024 11:48:52 +0000

Industrial communication networks - Wireless communication networks - Part 2: Coexistence management

Published By	Publication Date	Number of Pages
AENOR	2019-12-01	24

UNE-EN 62657-1:2017

Tue, 05 Nov 2024 11:48:51 +0000

Industrial communication networks - Wireless communication networks - Part 1: Wireless communication requirements and spectrum considerations

Published By	Publication Date	Number of Pages
AENOR	2017-12-01	69

UNE-EN 62657-2:2015

Tue, 05 Nov 2024 11:48:51 +0000

Industrial communication networks - Wireless communication networks - Part 2: Coexistence management

Published By	Publication Date	Number of Pages
AENOR	2015-07-01	82