{"id":1397,"date":"2020-07-12T05:04:41","date_gmt":"2020-07-12T05:04:41","guid":{"rendered":"https:\/\/www.zillionsbuyer.com\/blog\/?p=1397"},"modified":"2021-11-03T07:08:47","modified_gmt":"2021-11-03T07:08:47","slug":"what-is-the-use-and-location-of-buchholz-relay","status":"publish","type":"post","link":"https:\/\/www.zillionsbuyer.com\/blog\/what-is-the-use-and-location-of-buchholz-relay\/","title":{"rendered":"What is the use and location of buchholz relay"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/www.zillionsbuyer.com\/product\/6704\/siemens-microprocessor-based-overload-relay-3rb-class-20-s0-3rb3026-2pb0\">Buchholz relay:<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;The buchholz (as\/liquid operated) relay is connected in the pipework between the transformer tank and the conservator. If a valve is fitted to isolate the conservator, the buchholz relay is usually on the transformer tank side of the valve. Under normal conditions, the relay is full of oil.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Most faults occurring within oil filled transformers are\naccompanied by the generation of gas by the oil, due to liberation of heat.\nSuch generated gas accumulates in the relay, thereby operating the float\/flap\nswitches. With an incipient fault, gas is produced at a very slow rate and the\nupper float (alarm) switch will operate after a specific volume of gas has\naccumulated.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The upper float (alarm) switch will also indicate the low\noil level of the conservator. When a major fault occurs, the gas is produced\nrapidly, resuming in a sudden surge of oil up to the conservator, thereby\noperating the lower float(trip) switch<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The lower load (trip) switch will also indicate the drained\noil level of the conservator. To ensure successful operation of the relay, the pipe\nwork on either side of the relay and the relay itself, are all set at the same\nangle ( 2\u00b0 -3\u00b0 to the horizontal for single float relay and 3\u00b0 -7\u00b0 to the\nhorizontal for double float relay).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A machined surface is provided on the housing of the relay to check the oil level The arrow shown on the relay should point towards the conservator.<\/p>\n\n\n\n<figure class=\"wp-block-image size-medium is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.zillionsbuyer.com\/blog\/wp-content\/uploads\/2020\/07\/What-is-the-use-and-location-of-buchholz-relay-300x292.png\" alt=\"\" class=\"wp-image-1398\" width=\"300\" height=\"292\" srcset=\"https:\/\/www.zillionsbuyer.com\/blog\/wp-content\/uploads\/2020\/07\/What-is-the-use-and-location-of-buchholz-relay-300x292.png 300w, https:\/\/www.zillionsbuyer.com\/blog\/wp-content\/uploads\/2020\/07\/What-is-the-use-and-location-of-buchholz-relay.png 372w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><figcaption>buchholz relay<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Buchholz relay: &nbsp;The buchholz (as\/liquid operated) relay is connected in the pipework between the transformer tank and the conservator. If a valve is fitted to isolate the conservator, the buchholz relay is usually on the transformer tank side of the valve. Under normal conditions, the relay is full of oil. Most faults occurring within oil [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1398,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44],"tags":[383],"class_list":["post-1397","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electrical-engineering","tag-buchholz"],"_links":{"self":[{"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/posts\/1397","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/comments?post=1397"}],"version-history":[{"count":2,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/posts\/1397\/revisions"}],"predecessor-version":[{"id":2919,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/posts\/1397\/revisions\/2919"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/media\/1398"}],"wp:attachment":[{"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/media?parent=1397"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/categories?post=1397"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/tags?post=1397"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}