prSRPS EN IEC 61643-21:2026/AA:2026

Prenaponski zaštitni uređaji niskog napona – Deo 21: Uređaji za odvođenje prenapona povezani sa telekomunikacionim i signalnim mrežama – Zahtevi za performanse i metode ispitivanja - Izmena A

Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Requirements and test methods

Apstrakt

This document, together with IEC 61643-01:2024, is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages.
These devices are intended to be connected to telecommunications and signalling networks, and equipment rated up to 1 000 V RMS and 1 500 V DC.
These telecommunications and signalling networks can also provide power on the same line, e.g. Power over Ethernet (PoE).
Performance and safety requirements, tests and ratings are specified in this document. These devices contain at least one voltage-limiting component (clamping or switching) and are intended to limit surge voltages and divert surge currents.

Povezane direktive

NAPOMENA: Ukoliko se u polju sa nazivom direktive ne nalazi reč „harmonizovan“ (obeležena zelenom bojom), to znači da evropski standard nije citiran u OJEU.