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    <p>Tak to je nepříjemné. Jak to popisujete, mělo by to být
      jednoduché a neprůstřelné zapojení, kde PE vlastně vůbec
      nefiguruje. Pravda, srážecí kondenzátory s poklesem kapacity už
      jsem v různých zařízeních měnil, takže na takovém místě bych se je
      asi bál použít, ale když to jinde funguje normálně...</p>
    <p>Předpokládám, že ostatní součástky jsou na tom vstupu OK. U
      plynového topení bych čekal třeba nějaký tlustý solenoid, který
      bude produkovat napěťové špičky, které časem zahubí kdeco.<br>
    </p>
    <p>A ještě mimochodem - ty regulátory na místo montujete sami, nebo
      ta stavební firma? Nedivil bych se, kdyby při instalaci opakovaně
      prováděli nějakou botu, třeba že vstup nepřipojí na 230, ale na
      400 V. (Jasně, i to by zřejmě chytil ten transil a spíš by hořel
      srážecí rezistor, no něco v tom smyslu).</p>
    <p>Jsem zvědavý, na co nakonec přijdete.</p>
    <p>JMN<br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">Dne 30.03.2022 v 20:06 Pavel Poucha
      napsal(a):<br>
    </div>
    <blockquote type="cite"
cite="mid:CAHGg1iDH32nftbpUiLE0XBA3+VGLJ-RwC0m77JkJJ8N3-mQ0kA@mail.gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div dir="ltr">V těchto halách odcházejí dvoupolohové vstupy
        regulátorů. Jsou do vstupy pro kontakt z 230V, rezistor, transil
        na N, srážecí kondenzátor, optočlen s paralelním rezistorem. 
        Těchto regulátorů (různé verze, ale stejné zapojení vstupů) je v
        provozu několik tisíc mnoho let, bez problémů. Odcházejí jen u
        jedné firmy, která staví skladové haly v okolí měst. 
        <div><br>
        </div>
        <div>Kondenzátor (na 250V AC) odejde tak, že se postupně
          vyjiskřuje - zmenšuje se mu kapacita, až při 30% vstup
          nesepne. Vše se ale zdá normální, až teď ten odpor N-PE je
          divný. <br>
          <div><br clear="all">
            <div>
              <div dir="ltr" class="gmail_signature"
                data-smartmail="gmail_signature">
                <div dir="ltr">
                  <div>
                    <div dir="ltr">
                      <div>
                        <div dir="ltr">S pozdravem<br>
                          ing. Pavel Poucha<br>
                          jednatel<br>
                          <a href="mailto:pavel.poucha@papouch.com"
                            target="_blank" moz-do-not-send="true"
                            class="moz-txt-link-freetext">pavel.poucha@papouch.com</a><br>
                          Tel. +420 777 232 485<br>
                          <br>
                          Papouch s.r.o. - vývoj<br>
                          Papouch store s.r.o. - obchod</div>
                        <div>Papouch production s.r.o. - výroba</div>
                        <div dir="ltr"><br>
                        </div>
                        <div dir="ltr">Máte-li chuť, navštivte naše
                          stránky <a href="http://www.papouch.com/"
                            target="_blank" moz-do-not-send="true"
                            class="moz-txt-link-freetext">http://www.papouch.com/</a></div>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            </div>
            <br>
          </div>
        </div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">st 30. 3. 2022 v 18:35
          odesílatel Jiří Majzlík Nemeček <<a
            href="mailto:jirry@centrum.cz" moz-do-not-send="true"
            class="moz-txt-link-freetext">jirry@centrum.cz</a>>
          napsal:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0px 0px 0px
          0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
          <div>
            <p>A že jsem tak smělý, jak se to divné chování projevuje?
              Moc mě nenapadá, čemu by zvýšený odpor N-PE mohl vadit.<br>
            </p>
            <p>JMN<br>
            </p>
            <div>Dne 30.03.2022 v 18:13 Pavel Poucha napsal(a):<br>
            </div>
            <blockquote type="cite">
              <div dir="ltr">Tohle musím zjistit, může to být dost
                daleko. je to přívod k plynovým topením v hale, pod
                stropem.
                <div><br clear="all">
                  <div>
                    <div dir="ltr">
                      <div dir="ltr">
                        <div>
                          <div dir="ltr">
                            <div>
                              <div dir="ltr">S pozdravem<br>
                                ing. Pavel Poucha<br>
                                jednatel<br>
                                <a
                                  href="mailto:pavel.poucha@papouch.com"
                                  target="_blank" moz-do-not-send="true"
                                  class="moz-txt-link-freetext">pavel.poucha@papouch.com</a><br>
                                Tel. +420 777 232 485<br>
                                <br>
                                Papouch s.r.o. - vývoj<br>
                                Papouch store s.r.o. - obchod</div>
                              <div>Papouch production s.r.o. - výroba</div>
                              <div dir="ltr"><br>
                              </div>
                              <div dir="ltr">Máte-li chuť, navštivte
                                naše stránky <a
                                  href="http://www.papouch.com/"
                                  target="_blank" moz-do-not-send="true"
                                  class="moz-txt-link-freetext">http://www.papouch.com/</a></div>
                            </div>
                          </div>
                        </div>
                      </div>
                    </div>
                  </div>
                  <br>
                </div>
              </div>
              <br>
              <div class="gmail_quote">
                <div dir="ltr" class="gmail_attr">st 30. 3. 2022 v 17:36
                  odesílatel Jiří Majzlík Nemeček <<a
                    href="mailto:jirry@centrum.cz" target="_blank"
                    moz-do-not-send="true" class="moz-txt-link-freetext">jirry@centrum.cz</a>>
                  napsal:<br>
                </div>
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px 0.8ex;border-left:1px solid
                  rgb(204,204,204);padding-left:1ex">
                  <div>
                    <p>A kde je to měřené? Jestli je to třeba zásuvka
                      hodně vzdálená od hlavního rozvaděče, není to
                      úplně zcestná hodnota. Rozdělení N a PE bývá často
                      hned v hlavním rozvaděči, a pokud mluvíte o
                      skladové hale, mohou mezi tím být i stovky metrů
                      kabelů.</p>
                    <p>JMN</p>
                    <p><br>
                    </p>
                    <div>Dne 30.03.2022 v 15:54 Pavel Poucha napsal(a):<br>
                    </div>
                    <blockquote type="cite">
                      <div dir="ltr">Děkuji za radu. Divné je, že tohle
                        je firma, která staví skladové haly, všechny jak
                        přes kopírák...  2.5 ohmu mezi PE a N je
                        naměřeno na více lokalitách. Nechápu to, ale asi
                        to mají spojené někde velmi daleko. 
                        <div><br clear="all">
                          <div>
                            <div dir="ltr">
                              <div dir="ltr">
                                <div>
                                  <div dir="ltr">
                                    <div>
                                      <div dir="ltr">S pozdravem<br>
                                        ing. Pavel Poucha<br>
                                        jednatel<br>
                                        <a
                                          href="mailto:pavel.poucha@papouch.com"
                                          target="_blank"
                                          moz-do-not-send="true"
                                          class="moz-txt-link-freetext">pavel.poucha@papouch.com</a><br>
                                        Tel. +420 777 232 485<br>
                                        <br>
                                        Papouch s.r.o. - vývoj<br>
                                        Papouch store s.r.o. - obchod</div>
                                      <div>Papouch production s.r.o. -
                                        výroba</div>
                                      <div dir="ltr"><br>
                                      </div>
                                      <div dir="ltr">Máte-li chuť,
                                        navštivte naše stránky <a
                                          href="http://www.papouch.com/"
                                          target="_blank"
                                          moz-do-not-send="true"
                                          class="moz-txt-link-freetext">http://www.papouch.com/</a></div>
                                    </div>
                                  </div>
                                </div>
                              </div>
                            </div>
                          </div>
                          <br>
                        </div>
                        <br>
                        <div class="gmail_quote">
                          <div dir="ltr" class="gmail_attr">st 30. 3.
                            2022 v 15:43 odesílatel Vladimir <<a
                              href="mailto:vladimir@hkfree.org"
                              target="_blank" moz-do-not-send="true"
                              class="moz-txt-link-freetext">vladimir@hkfree.org</a>>
                            napsal:<br>
                          </div>
                          <blockquote class="gmail_quote"
                            style="margin:0px 0px 0px
                            0.8ex;border-left:1px solid
                            rgb(204,204,204);padding-left:1ex">
                            <div lang="CS">
                              <div>
                                <p class="MsoNormal"><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Měl
                                    by být téměř nulový, N a PE – modrý
                                    a žlutozelený jsou v rozvaděči
                                    spojené, patrně povolený spoj.</span></p>
                                <p class="MsoNormal"><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Zkuste
                                    změřit impedanci smyčky, stačí na to
                                    třeba varná konvice jako větší
                                    zátěž, mívají cca 2000W, změřte
                                    napětí naprázdno a při zatížení.
                                    Zjednodušeně by nemělo napětí moc
                                    klesnout, jinak z rozdílu napětí  a
                                    proudu spotřebičem spočítáte
                                    impedanci smyčky.</span></p>
                                <p class="MsoNormal"><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Pokud
                                    bude velký pokles napětí při
                                    zatížení, máte problém v N vodiči,
                                    v opačném případě v PE</span></p>
                                <p class="MsoNormal"><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
                                <p class="MsoNormal"><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Vladimír</span></p>
                                <p class="MsoNormal"><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
                                <p class="MsoNormal"><b><span
                                      style="font-size:11pt;font-family:Calibri,sans-serif">From:</span></b><span
style="font-size:11pt;font-family:Calibri,sans-serif"> Hw-list <<a
                                      href="mailto:hw-list-bounces@list.hw.cz"
                                      target="_blank"
                                      moz-do-not-send="true"
                                      class="moz-txt-link-freetext">hw-list-bounces@list.hw.cz</a>>
                                    <b>On Behalf Of </b>Pavel Poucha<br>
                                    <b>Sent:</b> Wednesday, March 30,
                                    2022 3:22 PM<br>
                                    <b>To:</b> HW-news <<a
                                      href="mailto:hw-list@list.hw.cz"
                                      target="_blank"
                                      moz-do-not-send="true"
                                      class="moz-txt-link-freetext">hw-list@list.hw.cz</a>><br>
                                    <b>Subject:</b> Odpor N vůči PE</span></p>
                                <p class="MsoNormal"> </p>
                                <div>
                                  <div>
                                    <p class="MsoNormal">Dobrý den,</p>
                                  </div>
                                  <div>
                                    <p class="MsoNormal"> </p>
                                  </div>
                                  <div>
                                    <p class="MsoNormal">řeším u jednoho
                                      zákazníka divné chování zařízení.
                                      V pevné instalaci je tam odpor
                                      mezi nulákem a ochranným vodičem
                                      2.5 Ohmu. To mi přijde hodně. Je
                                      na to asi nějaká norma, věděl by
                                      někdo která a kolik to je?</p>
                                  </div>
                                  <div>
                                    <p class="MsoNormal"> </p>
                                  </div>
                                  <div>
                                    <p class="MsoNormal">Děkuji.</p>
                                  </div>
                                  <p class="MsoNormal"><br clear="all">
                                  </p>
                                  <div>
                                    <div>
                                      <div>
                                        <div>
                                          <div>
                                            <div>
                                              <div>
                                                <p class="MsoNormal">S
                                                  pozdravem<br>
                                                  ing. Pavel Poucha<br>
                                                  jednatel<br>
                                                  <a
                                                    href="mailto:pavel.poucha@papouch.com"
                                                    target="_blank"
                                                    moz-do-not-send="true"
class="moz-txt-link-freetext">pavel.poucha@papouch.com</a><br>
                                                  Tel. +420 777 232 485<br>
                                                  <br>
                                                  Papouch s.r.o. - vývoj<br>
                                                  Papouch store s.r.o. -
                                                  obchod</p>
                                              </div>
                                              <div>
                                                <p class="MsoNormal">Papouch
                                                  production s.r.o. -
                                                  výroba</p>
                                              </div>
                                              <div>
                                                <p class="MsoNormal"> </p>
                                              </div>
                                              <div>
                                                <p class="MsoNormal">Máte-li
                                                  chuť, navštivte naše
                                                  stránky <a
                                                    href="http://www.papouch.com/"
                                                    target="_blank"
                                                    moz-do-not-send="true"
class="moz-txt-link-freetext">http://www.papouch.com/</a></p>
                                              </div>
                                            </div>
                                          </div>
                                        </div>
                                      </div>
                                    </div>
                                  </div>
                                </div>
                              </div>
                            </div>
_______________________________________________<br>
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                          </blockquote>
                        </div>
                      </div>
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                      <fieldset></fieldset>
                      <pre>_______________________________________________
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</pre>
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                    moz-do-not-send="true" class="moz-txt-link-freetext">Hw-list@list.hw.cz</a><br>
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                    rel="noreferrer" target="_blank"
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              <fieldset></fieldset>
              <pre>_______________________________________________
HW-list mailing list  -  sponsored by <a href="http://www.HW.cz" target="_blank" moz-do-not-send="true">www.HW.cz</a>
<a href="mailto:Hw-list@list.hw.cz" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">Hw-list@list.hw.cz</a>
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</pre>
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            moz-do-not-send="true" class="moz-txt-link-freetext">Hw-list@list.hw.cz</a><br>
          <a href="http://list.hw.cz/mailman/listinfo/hw-list"
            rel="noreferrer" target="_blank" moz-do-not-send="true"
            class="moz-txt-link-freetext">http://list.hw.cz/mailman/listinfo/hw-list</a><br>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
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