Telephone: +41 22 02 11 Telefax: +41 22 03 00 E-mail: [email protected] Web: INTERNATIONAL. STANDARD. IEC. Third edition. So how many are aware of the difference between these two Standards? I had these highlighted to me a few years ago and it was news to me. BS EN applies to circuit-breakers, the main contacts of which are intended to be connected to circuits, the rated voltage of which.
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Amends and replaces BS EN The most suitable solution for use are MCBs certified with both standards as their performance meets requirements of use for residential installations and high enough for use in industry and infrastructure applications.
In any case you should pay attention on technical characteristics of devices like: Hello Lim, It is higher because of lower Icu breaking capacity ratio to service breaking capacity Ics, eg.
An MCB designed for indoor, pollution-free conditions would be woefully inadequate for harsh, outdoor applications that require pollution degree 3. I am in search of complete MCCB test procedure with graphical explanation. These are all written into the Standard so if you are installing MCBs in to areas of a Polution Level 3 then that circuit breaker is not fit for purpose.
Detailed information you can find following the link, pages 2 and 3: My thinking is that by nature AC signals reverse polarity each cycle and therefore it would not matter which way the MCB was wired. Or take the tripping characteristics: Reply Dear Koks, Yes 60947- is safe choice. Kindly let me know if it is available on the Schneider site. Discussion in ‘ Industrial Electrician Talk ‘ started by essexSep 3, So how many are aware of the difference between these two Standards?
I am confused with two standards for the same breaker. Really very useful information. Share This Page Tweet.
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These CBs are intended for use of indoor, pollution and humidity-free conditions: Again there may be more recent versions of the document. Reply Thanks for your reply. Supplementary requirements for circuit-breakers used as direct-on-line starters are given in IECapplicable to low-voltage contactors and starters. Thanks Reply Thank you for the useful infprmation. Applies to circuit-breakers, the main contacts of which are intended to be connected to circuits, the rated voltage of which does not exceed 1,V a.
Icu, Ics, Ue, Uimp, pollution degree, ect. At present I am in search of job can you help me in getting job so that i can creat my future. Just those basic tech specs tell us how different the use of circuit breakers defined by our two standards are. Reply I have started working in the industrial sector and am having trouble completing test certs for installations fed from panels.
Document Status Indicators The Green document status indicator indicates that the document is: What do they have in common?
IEC 60898-1 and IEC 60947-2: a tale of two standards
Pollution degree 2, impulse voltage 4kV, isolation voltage is the same as nominal voltage V. Yes Hagar and Eaton will make devices to both Standards so when filling out certs we should be stating MCBs are installed.
Does 60974-2 mean that the trip kA is different when the breaker is used for residential or non residential use? Reply Stephen, the Max Zs value is not always published in technical guides.
Utilities and manufacturing facilities use them: But happen it does. Difference is in the breaking technology and size.
The same goes for impulse withstand voltage Uimp. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate 6947-2 production of British, European and International standards. Click here to find out how to access this document.
The requirements for circuit-breakers which are also intended to provide earth-leakage protection are contained in Annex B. I want to ask you that.