IEC 61643-352:2018 ED1

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

Publication date:   Jan 10, 2018

General information

60.60 Standard published   Jan 10, 2018


TC 37/SC 37B

International Standard

33.040.99   Other equipment for telecommunication systems



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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.

Life cycle


IEC 61643-352:2018 ED1
60.60 Standard published
Jan 10, 2018