{"id":23997,"date":"2023-10-18T23:37:01","date_gmt":"2023-10-18T22:37:01","guid":{"rendered":"http:\/\/indolighting.com\/?p=23997"},"modified":"2026-09-29T20:15:19","modified_gmt":"2026-09-29T19:15:19","slug":"ievads-parsprieguma-aizsardziba","status":"publish","type":"post","link":"https:\/\/indolighting.com\/lv\/ievads-parsprieguma-aizsardziba\/","title":{"rendered":"Ievads p\u0101rsprieguma aizsardz\u012bb\u0101"},"content":{"rendered":"<h5><span style=\"color: #00a5db;\">Ja pl\u0101nojat moderniz\u0101ciju vai v\u0113laties pie\u0146emt pamatotus iepirkuma l\u0113mumus, \u0161eit ir noder\u012bgs ievads par met\u0101la oks\u012bda varistoriem (MOV) un pla\u0161\u0101k\u0101m p\u0101rsprieguma aizsardz\u012bbas sist\u0113m\u0101m, kas vajadz\u012bgas gaismek\u013cu aizsardz\u012bbai<\/span><\/h5>\n<h5><span style=\"color: #f29621;\">Kas visp\u0101r ir MOV?<\/span><\/h5>\n<figure id=\"attachment_2908\" aria-describedby=\"caption-attachment-2908\" style=\"width: 334px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/metal-oxide-varistors.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2908\" src=\"https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/metal-oxide-varistors.jpg\" alt=\"Varistori iTMOV un TMOV\" width=\"334\" height=\"334\" srcset=\"https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/metal-oxide-varistors.jpg 334w, https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/metal-oxide-varistors-100x100.jpg 100w, https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/metal-oxide-varistors-300x300.jpg 300w, https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/metal-oxide-varistors-150x150.jpg 150w\" sizes=\"auto, (max-width: 334px) 100vw, 334px\" \/><\/a><figcaption id=\"caption-attachment-2908\" class=\"wp-caption-text\"><em>Varistoru iTMOV un TMOV att\u0113ls public\u0113ts ar Littelfuse at\u013cauju<\/em><\/figcaption><\/figure>\n<p>Met\u0101la oks\u012bda varistori (MOV) ir efekt\u012bvs risin\u0101jums p\u0101rsprieguma impulsu un p\u0101rspriegumu ierobe\u017eo\u0161anai k\u0101 apgaismojuma iek\u0101rtu prim\u0101r\u0101s aizsardz\u012bbas pak\u0101pe. Vienk\u0101r\u0161i sakot, p\u0101rsprieguma laik\u0101 MOV vada str\u0101vu un absorb\u0113 lielu boj\u0101juma ener\u0123ijas daudzumu, lai aizsarg\u0101tu tuvum\u0101 pievienot\u0101s iek\u0101rtas.<\/p>\n<p>Norm\u0101l\u0101 darb\u012bb\u0101 MOV ir pas\u012bvs komponents, kas diferenci\u0101l\u0101 re\u017e\u012bma p\u0101rspriegumiem piesl\u0113gts starp f\u0101zi un neitr\u0101li, bet kop\u0113j\u0101 re\u017e\u012bma p\u0101rspriegumiem starp f\u0101zi\/neitr\u0101li un zem\u0113jumu.<\/p>\n<p>Pie noteikta nomin\u0101l\u0101 darba sprieguma MOV fiziskais izm\u0113rs nor\u0101da t\u0101 nomin\u0101lo v\u0113rt\u012bbu (t. i., maksim\u0101lo izl\u0101des str\u0101vu); liel\u0101ki MOV parasti sp\u0113j iztur\u0113t vair\u0101k p\u0101rsprieguma impulsu pie noteikta p\u0101rsprieguma, pirms tie nolietojas. V\u0113l viena svar\u012bga jebkura MOV \u012bpa\u0161\u012bba ir t\u0101 voltamp\u0113ru (\u201eV-I\u201d) raksturl\u012bkne, t. i., str\u0101va, ko tas vada pie da\u017e\u0101diem p\u0101rspriegumiem, lai pasarg\u0101tu pievienot\u0101s iek\u0101rtas. No \u0161\u012bs l\u012bknes cita starp\u0101 redzams, kad MOV s\u0101ks vad\u012bt iev\u0113rojamu str\u0101vu.<\/p>\n<h5><span style=\"color: #f29621;\">K\u0101p\u0113c svar\u012bga ir sekund\u0101r\u0101 aizsardz\u012bba<\/span><\/h5>\n<p>J\u0101\u0146em v\u0113r\u0101, ka p\u0101rsprieguma laik\u0101 MOV \u201eierobe\u017eo\u201d p\u0101rsprieguma l\u012bmeni. \u0160is ierobe\u017eotais spriegums non\u0101k l\u012bdz apgaismojuma iek\u0101rtai. T\u0101p\u0113c sekund\u0101rajai aizsardz\u012bbai iek\u0101rt\u0101 (vai pa\u0161ai iek\u0101rtai) j\u0101sp\u0113j iztur\u0113t \u0161o ierobe\u017eoto spriegumu (kas var b\u016bt ap 1 000 V). Slikti projekt\u0113ta sekund\u0101r\u0101 aizsardz\u012bba var izrais\u012bt apgaismojuma iek\u0101rtu boj\u0101jumus v\u0113l pirms MOV kalpo\u0161anas laika beig\u0101m.<\/p>\n<h5><span style=\"color: #f29621;\">L\u012bdzsvarota MOV sist\u0113ma<\/span><\/h5>\n<p>Aizsardz\u012bbas sist\u0113mas, kas sast\u0101v no vair\u0101kiem MOV (vai p\u0101rsprieguma aizsardz\u012bbas ier\u012bc\u0113m), j\u0101p\u0101rdom\u0101 r\u016bp\u012bgi, lai t\u0101s b\u016btu efekt\u012bvas. Pret\u0113j\u0101 gad\u012bjum\u0101 sist\u0113ma aizsarg\u0101s tikai tik labi k\u0101 v\u0101j\u0101kais MOV. Iemesls ir tas, ka da\u017e\u0101diem MOV neap\u0161aub\u0101mi b\u016bs at\u0161\u0137ir\u012bgas V-I raksturl\u012bknes komponentu v\u0113rt\u012bbu, ra\u017eot\u0101ju at\u0161\u0137ir\u012bbu vai pat ra\u017eo\u0161anas partiju at\u0161\u0137ir\u012bbu d\u0113\u013c.<\/p>\n<figure id=\"attachment_2904\" aria-describedby=\"caption-attachment-2904\" style=\"width: 719px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2904\" src=\"https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/V-I-MOV.png\" alt=\"V-I raksturl\u012bkne\" width=\"719\" height=\"397\" srcset=\"https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/V-I-MOV.png 1580w, https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/V-I-MOV-600x331.png 600w, https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/V-I-MOV-300x165.png 300w, https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/V-I-MOV-1024x564.png 1024w, https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/V-I-MOV-768x423.png 768w, https:\/\/indolighting.com\/wp-content\/uploads\/2016\/05\/V-I-MOV-1536x847.png 1536w\" sizes=\"auto, (max-width: 719px) 100vw, 719px\" \/><figcaption id=\"caption-attachment-2904\" class=\"wp-caption-text\"><em>V-I raksturl\u012bkne par\u0101da str\u0101vas vad\u012b\u0161anu pie da\u017e\u0101diem p\u0101rsprieguma l\u012bme\u0146iem<\/em><\/figcaption><\/figure>\n<p>Gaismek\u013ciem ar vienu p\u0101rsprieguma aizsardz\u012bbas ier\u012bci (SPD) var \u0161\u0137ist, ka par sist\u0113mu nav j\u0101uztraucas. Tom\u0113r daudz\u0101s pievienotaj\u0101s ier\u012bc\u0113s, piem\u0113ram, fotorelej\u0101 un LED draiver\u012b, starp f\u0101zi un neitr\u0101li ir MOV. Ja sist\u0113ma ir pareizi projekt\u0113ta, t\u0101s komponentus var diezgan labi saska\u0146ot, un p\u0101rspriegums tiek sadal\u012bts starp fotoreleju, SPD un draiveri. Ta\u010du, ja sist\u0113ma <span style=\"text-decoration: underline;\">nav<\/span> labi saska\u0146ota, visu p\u0101rspriegumu var uz\u0146emties maz\u0101kais MOV (piem\u0113ram, fotorelej\u0101), izraisot gaismek\u013ca deg\u0161anu dien\u0101 vai t\u0101 atteici.<\/p>\n<p>Tas ir b\u016btiski, ja v\u0113laties moderniz\u0113t sist\u0113mu vai nomain\u012bt atsevi\u0161\u0137u komponentu, piem\u0113ram, boj\u0101tu LED draiveri. \u0160\u0101d\u0101 gad\u012bjum\u0101 gaismekl\u012b var b\u016bt 5 kA MOV draiver\u012b un maz\u0101ks 2 kA MOV fotorelej\u0101, un abi s\u0101kotn\u0113ji izv\u0113l\u0113ti t\u0101, lai p\u0101rspriegums sadal\u012btos l\u012bdzsvaroti. Ja boj\u0101to LED draiveri nomaina ar modeli, kur\u0101 ir 10 kA MOV ar at\u0161\u0137ir\u012bgu V-I raksturl\u012bkni, rezult\u0101t\u0101 uz 2 kA fotoreleja MOV var tikt novirz\u012bts <span style=\"text-decoration: underline;\">liel\u0101ks<\/span> p\u0101rspriegums nek\u0101 pirms moderniz\u0101cijas! \u0160\u0101d\u0101 gad\u012bjum\u0101 izmai\u0146u rezult\u0101t\u0101 sist\u0113ma ir aizsarg\u0101ta iev\u0113rojami slikt\u0101k nek\u0101 iepriek\u0161.<\/p>\n<h5><span style=\"color: #f29621;\">Ko tas viss noz\u012bm\u0113&#8230;<\/span><\/h5>\n<p>Galu gal\u0101 \u0161eit ir daudz sare\u017e\u0123\u012btu aspektu. Lai gaismeklis darbotos uzticami un b\u016btu aizsarg\u0101ts, oblig\u0101ti j\u0101nodro\u0161ina piem\u0113roti sekund\u0101r\u0101s aizsardz\u012bbas pas\u0101kumi, k\u0101 ar\u012b visas sist\u0113mas pieeja vis\u0101 gaismek\u013ca kalpo\u0161anas laik\u0101.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ja pl\u0101nojat moderniz\u0101ciju vai v\u0113laties pie\u0146emt pamatotus iepirkuma l\u0113mumus, \u0161eit ir noder\u012bgs ievads par met\u0101la oks\u012bda varistoriem (MOV) un pla\u0161\u0101k\u0101m p\u0101rsprieguma aizsardz\u012bbas sist\u0113m\u0101m, kas vajadz\u012bgas gaismek\u013cu aizsardz\u012bbai Kas visp\u0101r ir MOV? Met\u0101la oks\u012bda varistori (MOV) ir efekt\u012bvs risin\u0101jums p\u0101rsprieguma impulsu un p\u0101rspriegumu ierobe\u017eo\u0161anai k\u0101 apgaismojuma iek\u0101rtu prim\u0101r\u0101s aizsardz\u012bbas pak\u0101pe. Vienk\u0101r\u0161i sakot, p\u0101rsprieguma laik\u0101 MOV vada [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":19484,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[129],"tags":[],"class_list":["post-23997","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/posts\/23997","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/comments?post=23997"}],"version-history":[{"count":1,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/posts\/23997\/revisions"}],"predecessor-version":[{"id":23998,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/posts\/23997\/revisions\/23998"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/media\/19484"}],"wp:attachment":[{"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/media?parent=23997"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/categories?post=23997"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/tags?post=23997"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}