| Publication CODE |
Title |
| IEC 60947-3:2020 (2020-04) |
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 3: SWITCHES, DISCONNECTORS, SWITCH-DISCONNECTORS AND FUSE-COMBINATION UNITS |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
398.00 €
|
190. |
Description
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.
|
| Class |
C990
(IEC PUBLICATIONS IEC PUBLICATIONS)
|
| Committee |
TC 121/SC 121A
Low-voltage switchgear and controlgear
|
| Responsible |
Ir DELENS Marc
|
| BEC Approval |
2020-04-22 |
| ICS-Code (International Standards Classification) |
29.120.40
, 29.130.20
|
| NBN Status |
New |
|
| IEC publication date |
2020-04-22 |
| IEC stability date |
2024-12-31 |
| IEC file modification date |
2020-04-22 |
| IEC last modification date |
2020-04-30 |
|
