Lyhenteet

- A / A +

Takaisin

SFS-EN IEC 60947-3:2021:en

Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units

Tuote ladattavissa heti Toimitusaika on noin 1 - 2 työpäivää Toimitusaika on noin 3 - 5 työpäivää
Soveltamisala
Suomenkielistä soveltamisalaa ei ole saatavissa.

IEC 60947-3:2020 applies to switches, disconnectors, switch-disconnectors and fuse-combination units and their dedicated accessories to be used in distribution circuits and motor circuits of which the rated voltage does not exceed 1 000 V AC or 1 500 V DC.

This fourth edition cancels and replaces the third edition published in 2008, Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

addition of critical load current tests for DC switches (see 9.3.9);
addition of requirements for a conditional short-circuit rating for disconnectors, switches, and switch-disconnectors protected by circuit-breakers (see 9.3.7.2);
addition of new categories for high-efficiency motors switching (see Annex A);
addition of new Annex E for connection to aluminium conductors;
addition of new Annex F for power losses measurement.


Tämän julkaisun valmistelusta Suomessa vastaa SESKO ry, puh. 050 571 6048.
Sidokset
Velvoittavat viittaukset
EN 55011:2016 Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement
EN 55011:2016/A1:2017 Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement
EN 60034-12:2017 Rotating electrical machines - Part 12: Starting performance of single-speed three-phase cage induction motors
Direktiivi
2014/35/EU
2014/30/EU

http://ec.europa.eu »
Vahvistuspäivä
05.03.2021
Julkaisupäivä
09.03.2021
Painos
1
Sivumäärä
100
Julkaisun kieli
englanti

Takaisin