Гермовводы для кабеля — размеры и виды




Гермоввод состоит из:

штуцера — патрубка с резьбой для соединения изделия с оборудованием;
прокладки, обеспечивающей герметичность соединений;
крепежной и накидной гаек.

Приспособления обладают прижимной конструкцией — гайка прижимает провод через уплотнитель до достижения гермитичности. Поэтому один и тот же гермоввод применим к кабелям разных диаметров (диапазон составляет 2—3 мм). Наилучшая герметичность достигается, если диаметр переходника приближен к диаметру провода.

Как выбрать

При выборе нужно руководствоваться следующим:

Взрывозащищенность. Если необходим ввод кабеля на взрывозащищенное оборудование, переходник должен иметь соответствующую маркировку, соответствовать ГОСТ Р МЭК 60079, быть сертифицированным по ТР ТС 012/2011. Обратите внимание, что существуют различные классы взрывозащиты.
Материал изготовления. Подбирается в зависимости от агрессивности окружающей среды. Для домашних распаечных коробок подойдет пластиковый герметичный ввод — он недорого стоит, обеспечивает достаточную защиту. Если условия эксплуатации предполагают механические повреждения, воздействия влаги, необходим стальной, латунный или латунь-никелевый переходник.
Тип и размер резьбы. Она может быть метрическая, коническая, дюймовая. Соединение должно соответствовать пазу под гермоввод.
Размеры уплотнителей должны попадать в диапазон внутреннего и наружного диаметров кабеля. Эти данные можно получить из справочных материалов. К примеру, если диаметр провода с обшивкой — 13 мм, а без обшивки — 11 мм, то и уплотнитель должен быть от 11 до 13 мм. Рекомендуется брать усредненное значение. В описанном случае — 12 мм. Так уплотнитель будет плотно и безопасно прижимать проводник — не повредит его, но и не слетит.
Материал изготовления уплотнителя. Силиконовые изделия не теряют своих свойств в диапазоне от -60 до +120°С, неопреновые — от -60 до +68°С. Характеристики могут немного отличаться — зависят от конкретного вида материала, способа его получения.

В разных случаях могут потребоваться дополнительные детали: наконечник для присоединения металлорукава, крепление под заземление, контргайка.


44 thoughts on “Гермовводы для кабеля — размеры и виды

  1. Normally I don’t read article on blogs, however I would like to say that this write-up very pressured me to check out and do it! Your writing style has been surprised me. Thanks, very nice post.

  2. You could certainly see your expertise in the
    article you write. The arena hopes for more passionate writers like you who are not afraid to say how they
    believe. All the time follow your heart.

  3. Wonderful beat ! I would like to apprentice
    even as you amend your site, how can i subscribe for a weblog site?
    The account aided me a appropriate deal. I were tiny bit acquainted of this
    your broadcast offered vivid transparent concept

  4. Superb website you have here but I was curious about if
    you knew of any community forums that cover the same topics discussed in this article?

    I’d really like to be a part of online community where I can get feed-back
    from other knowledgeable people that share the same interest.
    If you have any recommendations, please let me know.
    Thanks a lot!

  5. I do trust all the ideas you have presented in your post. They’re really convincing and will definitely work. Nonetheless, the posts are very brief for starters. May just you please extend them a little from subsequent time? Thanks for the post.

  6. Hello, I think your website might be having browser compatibility issues.
    When I look at your website in Safari, it looks
    fine but when opening in Internet Explorer, it has some overlapping.
    I just wanted to give you a quick heads up! Other then that, awesome blog!

  7. I have been browsing online more than 3 hours nowadays, yet I by no means found any attention-grabbing article like yours. It’s beautiful price enough for me. Personally, if all web owners and bloggers made excellent content as you did, the net shall be a lot more useful than ever before.

  8. Hello there, I found your web site via Google at the same time as looking for a related topic, your site got here
    up, it seems to be great. I’ve bookmarked it
    in my google bookmarks.
    Hi there, simply changed into alert to your blog via Google, and
    located that it is truly informative. I am gonna
    be careful for brussels. I’ll appreciate should you proceed this in future.
    A lot of people will probably be benefited from your writing.

  9. Great goods from you, man. I’ve understand your stuff previous to and you’re just extremely magnificent. I really like what you’ve acquired here, certainly like what you’re stating and the way in which you say it. You make it entertaining and you still take care of to keep it wise. I cant wait to read much more from you. This is really a wonderful web site.

  10. I’m still learning from you, as I’m improving myself. I certainly love reading everything that is written on your site.Keep the posts coming. I enjoyed it!

  11. What i do not understood is in fact how you are
    now not really a lot more neatly-appreciated than you may be now.
    You’re very intelligent. You recognize thus significantly when it comes to this matter, made me in my
    view consider it from a lot of numerous angles. Its like women and men are
    not involved until it’s something to accomplish with Woman gaga!
    Your own stuffs excellent. At all times maintain it up!

  12. I am extremely inspired along with your writing abilities and
    also with the format in your weblog. Is this a paid subject or did you modify it your self?
    Either way keep up the nice high quality writing, it
    is rare to peer a nice weblog like this one these days..

  13. Have you ever heard of second life (sl for short). It is basically a video game where you can do anything you want. sl is literally my second life (pun intended lol). If you would like to see more you can see these second life websites and blogs

  14. Seandainya anda telah memutuskan untuk bermain judi joker123 deposit pulsa maka patut mempunyai aplikasinya.
    Untuk mempunyai aplikasi ini anda patut memilih laman judi terbaik dan paling ampuh.
    Ada beberapa hal yang wajib anda lakukan ketika dalam progres pencarian web judi terbaik dan terpercaya.

    Perkembangan permainan judi memang benar-benar kencang sekali, anda dapat bermain judi joker cuma dengan menggunakan hp termasuk juga transaksinya.
    Permainan ini memang amat menguntungkan bagi para pemain yang memenangkan permainan sebab akan banyak
    menerima tawaran hadiah dari situsnya, tapi patut memilih web judi terbaik supaya tidak terkena pembohongan.

  15. I precisely wanted to thank you so much again. I’m not certain what I would have gone through without the type of techniques documented by you about this industry. This was a alarming condition in my view, but spending time with your well-written technique you treated that took me to cry for happiness. I am just happier for the help and in addition expect you comprehend what an amazing job that you are accomplishing training many others through the use of your webpage. I am sure you’ve never come across any of us.

  16. I definitely wanted to write down a simple comment so as to say thanks to you for the amazing guidelines you are writing at this site. My time intensive internet search has at the end been honored with sensible tips to talk about with my colleagues. I would assert that most of us site visitors actually are definitely blessed to exist in a useful community with so many special professionals with helpful opinions. I feel rather fortunate to have discovered your entire website and look forward to plenty of more fun minutes reading here. Thanks again for everything.

  17. I do love the manner in which you have framed this particular concern and it really does give us some fodder for consideration. Nonetheless, because of what precisely I have seen, I simply just wish as the actual feed-back stack on that people keep on issue and in no way embark on a tirade regarding the news du jour. Yet, thank you for this superb point and while I can not really go along with this in totality, I regard your standpoint.

Добавить комментарий для Аноним Отменить ответ

Ваш адрес email не будет опубликован.