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New Version of EN 2794-004:2014 Published

Boeing 777 ceiling switches and circuit breakers

A new version of EN 2794-004 was published by the European Committee for Standardization. EN 2794-004 applies to “Aerospace series – Circuit breakers, single-pole, temperature compensated, rated currents 20 A to 50 A – Part 004: UNC thread terminals – Product standard.” The new version is available for purchase on the CEN website.

Description*

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How to Perform a Radiated Emissions Measurement

Radiated emissions testing is the measurement of the electromagnetic field of the emissions that are unintentionally being generated by the equipment under test.

“This European Standard specifies the characteristics of single-pole circuit breakers, temperature compensated with a rated current from 20 A to 25 A, used in aircraft on-board circuits at a temperature between – 55 °C and 125 °C and at an altitude of 15 000 m max. These circuit breakers are operated by a push-pull type single push button (actuator), with delayed action “trip-free” tripping. They will continue to function up to the short-circuit current.”

*Description from CEN website

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