Применение малых напряжений

127
1084

Применение малых напряжений Применение малых напряжений – самая лучшая защита от воздействия электрического тока. Малые напряжения находятся в интервале 12 Вольт — 42 Вольта.

Такая необходимость возникает при использовании переносных электроприёмников, а также для освещения помещений особо опасных, в наружных электроустановках.

Аккумуляторные батареи и выпрямительные устройства, однофазные трансформаторы, мощность которых небольшая, могут служить источниками малого напряжения. Не следует использовать для понижения напряжения резисторы и дроссели.

Понижающие трансформаторы небольшой мощности выпускаются как для установки на станках, так и переносные. Гибкий провод для подключения к сети должен иметь переносный трансформатор. Провод должен быть заключён в оболочку, изготовленную из резины либо из поливинилхлорида, а также обладать вилкой, служащей для подключения к надёжной штепсельной розетке. Штепсельная розетка может быть установлена на щитке в РУ, либо в цехе в зонах применения.

У понижающих трансформаторов вторичные обмотки обязательно должны заземляться. Это обусловлено тем, что есть опасность повреждения самого трансформатора при переходе высшего напряжения к низшему.

Применение малых напряжений Эта схема имеет недостаток. Ведь в случае замыкания на землю или на корпус проводники (заземляющие) оказываются под некоторым напряжением до тех пор, пока не отключить повреждённый участок. Под таким напряжением оказываются все заземлённые части. Многие считают, что такая ситуация не опасна. Всего этого можно избежать, если использовать разделяющие трансформаторы.

К ним предъявляются повышенные требования. Должно быть исключено повреждение изоляции внутри самого трансформатора, когда происходит переход напряжения из первичной стороны на необходимую вторичную. Применение разделяющих трансформаторов связано с одновременным понижением напряжения, а также с разделением напряжения.

Использование разделяющих трансформаторов приводит к улучшению условий безопасности. Они намного эффективнее, чем при питании непосредственно от сети, а также с помощью понижающих трансформаторов, где осуществляется заземление вторичных обмоток.

Здесь постоянно необходимо контролировать состояние изоляции трансформаторов, проводов вторичной сети и электроприёмников. Этот контроль предотвращает однофазные замыкания.

http://electrik.info

127 КОММЕНТАРИИ

  1. A lot of thanks for all of the labor on this web page.
    Ellie really loves setting aside time for internet research
    and it’s simple to grasp why. My spouse and i know all concerning the compelling mode you provide priceless techniques on your web blog
    and as well as welcome participation from other people on that issue plus our favorite simple princess
    has always been understanding so much. Take advantage of the
    rest of the year. Your conducting a good job.[X-N-E-W-L-I-N-S-P-I-N-X]I am extremely inspired with
    your writing abilities and also with the layout for your weblog.
    Is that this a paid topic or did you customize it your self?
    Either way keep up the nice high quality writing, it is uncommon to look a
    nice weblog like this one these days.

    My site … http://www.aniene.net/modules.php?name=Your_Account&op=userinfo&username=LawesMarcy

  2. Wonderful goods from you, man. I’ve understand your stuff previous
    to and you are just extremely fantastic. I really like what you have acquired here, really like what you’re
    stating and the way in which you say it.

    You make it entertaining and you still care for to
    keep it wise. I can not wait to read far more from you.
    This is actually a terrific website.

    My web-site … Erorectin Ingredients

  3. I am really loving the theme/design of your web site.

    Do you ever run into any browser compatibility problems? A small
    number of my blog readers have complained about my site not operating
    correctly in Explorer but looks great in Firefox. Do
    you have any advice to help fix this problem?

    Feel free to visit my webpage: http://www.ltlszc.com

  4. I just like the valuable info you provide on your articles.
    I’ll bookmark your weblog and take a look at once more right here frequently.

    I am relatively sure I’ll learn many new stuff right right here!

    Good luck for the next!

    my blog … Penney

  5. Undeniably believe that which you stated. Your favorite reason appeared to be on the net the easiest
    thing to be aware of. I say to you, I definitely get annoyed
    while people think about worries that they just do not know about.
    You managed to hit the nail upon the top and
    defined out the whole thing without having side-effects ,
    people can take a signal. Will probably be back to get more.
    Thanks

    Visit my homepage … http://www.goldenanapa.ru/

  6. Howdy would you mind sharing which blog platform you’re working with?
    I’m looking to start my own blog in the near future
    but I’m having a hard time deciding between BlogEngine/Wordpress/B2evolution and Drupal.
    The reason I ask is because your design seems different then most blogs and I’m looking for something unique.
    P.S Apologies for getting off-topic but I had to ask!

    My website … http://shihan.com.ru/

  7. Thank you for all your valuable effort on this website.

    My aunt really loves carrying out internet research and it’s easy to
    understand why. We all know all relating to the compelling means you deliver good secrets on the web site and as well as strongly encourage contribution from others about this concept
    plus our favorite child is really learning a great deal.
    Take advantage of the remaining portion of the year.

    You have been performing a wonderful job.[X-N-E-W-L-I-N-S-P-I-N-X]I am extremely impressed with your writing skills as smartly as
    with the structure to your weblog. Is that this a paid topic or did you modify it your
    self? Either way stay up the nice high quality writing, it is rare
    to peer a nice weblog like this one nowadays.

    Feel free to surf to my blog … Keto Smooth Review

  8. Wonderful goods from you, man. I have understand your stuff previous to and you’re just too fantastic.
    I actually like what you’ve acquired here,
    certainly like what you’re saying and the way
    in which you say it. You make it enjoyable and you still take care of to keep it
    wise. I can’t wait to read much more from you. This is really a terrific web site.

    Here is my page; PeakFlow Reviews

  9. Hiya! Quick question that’s totally off topic. Do you know how
    to make your site mobile friendly? My website looks weird when viewing from my iphone4.
    I’m trying to find a theme or plugin that might be able to correct this problem.
    If you have any suggestions, please share. Thanks!

    Feel free to visit my web page Keto Smooth Reviews

  10. Thanks so much for providing individuals with such a
    nice opportunity to discover important secrets from here.
    It’s usually so lovely and full of amusement for me and my office mates to visit your website on the least thrice per week to learn the
    fresh stuff you have. And indeed, I am just certainly happy considering the attractive principles you serve.

    Selected 4 points on this page are certainly the finest we have all had.

    Feel free to surf to my webpage … http://www.comptine.biz

  11. I have to get across my admiration for your kindness for folks that should have help
    with your field. Your very own dedication to getting the solution all-around
    came to be quite useful and have in most cases enabled
    somebody much like me to attain their targets. Your useful
    advice signifies this much to me and somewhat more to my fellow workers.
    Regards; from everyone of us.

    My blog: Keto Total BHB

  12. I have to express thanks to you for rescuing me from this scenario.
    Just after exploring through the the net and seeing tricks that were
    not productive, I thought my entire life was done.
    Being alive minus the strategies to the difficulties you’ve solved as a
    result of this guide is a crucial case, and ones that could have badly damaged
    my entire career if I hadn’t discovered the blog. Your own capability and kindness in controlling all the things was very
    helpful. I’m not sure what I would have done if I had not come upon such a solution like this.

    It’s possible to now look forward to my future. Thank you
    very much for the impressive and result oriented guide.
    I won’t think twice to refer your blog post
    to any person who would like direction about this matter.

    Feel free to surf to my website Sound Joy Earbuds Price

  13. This is the right site for anyone who wants to find out about this topic.

    You understand a whole lot its almost tough to argue with you (not that I personally would want to?HaHa).

    You definitely put a fresh spin on a topic that’s
    been written about for a long time. Wonderful stuff, just excellent!

    Look at my web blog :: http://www.goldenanapa.ru

  14. I do not drop many remarks, however i did some searching and wound up here Применение
    малых напряжений. And I actually do have a couple
    of questions for you if you tend not to mind.
    Could it be only me or does it look as if like a few of the remarks come across
    like they are left by brain dead folks? 😛 And, if you
    are writing on additional online social sites, I’d like to follow anything new you have to post.

    Would you make a list of all of all your shared pages like your linkedin profile, Facebook page or twitter feed?

    Also visit my site Imarais Beauty Cream

  15. Excellent goods from you, man. I’ve understand your stuff previous to and you’re just extremely fantastic.
    I really like what you’ve acquired here, really like what you are stating and the
    way in which you say it. You make it entertaining and you still take
    care of to keep it sensible. I can’t wait to read far more
    from you. This is actually a wonderful site.

    Also visit my web blog … Frost Air Cooler

  16. Hey I know this is off topic but I was wondering if you knew of
    any widgets I could add to my blog that automatically tweet my newest twitter updates.
    I’ve been looking for a plug-in like this for quite some time and was hoping
    maybe you would have some experience with something like this.

    Please let me know if you run into anything. I truly enjoy reading your blog and I look forward to your new updates.

    Here is my site :: personal cannabis seeds

  17. I’m just writing to make you be aware of of the perfect experience my child obtained studying the blog.
    She discovered so many issues, including how it is like
    to possess an ideal giving character to get other people smoothly fully grasp selected complex subject areas.

    You really surpassed our desires. Many thanks for churning out those precious,
    trustworthy, educational and as well as easy thoughts on the topic to Janet.

    Feel free to visit my homepage http://www.aniene.net

  18. I loved up to you’ll receive performed right here.
    The cartoon is attractive, your authored subject matter stylish.

    nevertheless, you command get bought an nervousness over that you wish be turning in the
    following. sick no doubt come further until now once more since precisely the
    same nearly a lot steadily inside case you protect this
    increase.

    Feel free to surf to my webpage … https://www.kaiyun.net/bbs/////////home.php?mod=space&uid=177741&do=profile

  19. Greetings from Idaho! I’m bored to death at work
    so I decided to check out your site on my iphone during lunch break.

    I really like the information you provide here and can’t wait to take a look when I get home.
    I’m shocked at how quick your blog loaded on my mobile ..
    I’m not even using WIFI, just 3G .. Anyways, very
    good blog!

    Here is my webpage testosterone level

  20. I do not know whether it’s just me or if perhaps everyone else experiencing problems with your
    blog. It appears as if some of the written text on your posts are running off
    the screen. Can someone else please comment and let me know if this
    is happening to them as well? This may be a problem with
    my internet browser because I’ve had this happen before.
    Thanks

    Feel free to visit my web blog … teenager smoking

  21. Hi, i believe that i noticed you visited my site
    so i got here to return the want?.I am trying to in finding things to enhance
    my web site!I assume its good enough to make use of some of your ideas!!

    Also visit my website — Bonnie

  22. We would like to thank you once again for the beautiful ideas you offered Jesse when preparing
    a post-graduate research as well as, most importantly, regarding providing
    all the ideas in a blog post. Provided we had known of your web page a year ago,
    we’d have been saved the needless measures we were having to take.
    Thanks to you.

    Here is my website … magic pill

  23. Its like you read my mind! You seem to know so much about this, like you wrote the book in it or something.
    I think that you can do with a few pics to drive the message
    home a little bit, but instead of that, this is great
    blog. An excellent read. I’ll definitely be back.

    Take a look at my page; good skin care

  24. Great beat ! I would like to apprentice whilst you amend
    your site, how can i subscribe for a blog website?
    The account aided me a appropriate deal.
    I had been a little bit familiar of this your broadcast provided vibrant transparent idea

    Take a look at my blog; good skin care

  25. The very next time I read a blog, I hope that it doesn’t disappoint me just
    as much as this one. I mean, Yes, it was my choice to read through, but I really believed you
    would have something interesting to say. All I hear is
    a bunch of crying about something that you could possibly fix
    if you were not too busy searching for attention.

    Feel free to surf to my blog — acne treatment

ОСТАВЬТЕ ОТВЕТ

Пожалуйста, введите ваш комментарий!
пожалуйста, введите ваше имя здесь