{"id":7890,"date":"2023-06-29T16:05:56","date_gmt":"2023-06-29T08:05:56","guid":{"rendered":"https:\/\/www.lewsin.com\/?p=7890"},"modified":"2025-05-09T12:00:37","modified_gmt":"2025-05-09T04:00:37","slug":"bk-400va%e6%8e%a7%e5%88%b6%e5%8f%98%e5%8e%8b%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.lewsin.cn\/?p=7890","title":{"rendered":"BK-400VA Control Transformer"},"content":{"rendered":"

The BK series control transformer is suitable for use in AC circuits ranging from 50Hz to 60Hz. It serves as a control power supply for general electrical appliances in machine tools and mechanical equipment, as well as for local lighting and indicator lights.
\nThe product complies with JB\/T9646 standard.
\nModel and its meaning
\nSome common BK transformer models include:
\nBK-25VA,BK-50VA,BK-100VA,BK-150VA,BK-200VA,BK-300VA,BK-400VA
\nBK-500VA,BK-700VA,BK-1000VA,BK-1500VAMBK-2000VA,BK-3000VA
\nspecifications
\n1. Rated capacity: 25 VA\u300150VA\u3001100VA\u3001150VA\u3001200VA\u3001250VA\u3001300VA\u3001400VA\u3001500VA\u3001700VA\u30011000VA\u30011500VA\u30012000VA\u30013000VA\u30015000VA\u3002
\n2. Primary voltage: 220V, 380V or depending on user needs;
\nSecondary voltage: 6.3V, 12V, 24V, 36V, 110V, 127V, 220V, 380V or depending on user requirements.
\nAppearance and installation dimensions<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
model<\/td>\nInstallation size<\/td>\nMounting Hole<\/td>\nExternal dimensions<\/td>\n<\/tr>\n
A<\/td>\nC<\/td>\nK*J<\/td>\nB<\/td>\nD<\/td>\nE<\/td>\n<\/tr>\n
BK-25VA<\/td>\n64<\/td>\n45<\/td>\n6*7<\/td>\n80<\/td>\n78<\/td>\n95<\/td>\n<\/tr>\n
BK-50VA<\/td>\n70<\/td>\n60<\/td>\n6*8<\/td>\n89<\/td>\n89<\/td>\n95<\/td>\n<\/tr>\n
BK-100VA<\/td>\n82<\/td>\n64<\/td>\n6*8<\/td>\n99<\/td>\n107<\/td>\n114<\/td>\n<\/tr>\n
BK-150VA<\/td>\n84<\/td>\n76<\/td>\n7*10<\/td>\n105<\/td>\n104<\/td>\n116<\/td>\n<\/tr>\n
BK-250VA<\/td>\n102<\/td>\n87<\/td>\n7*10<\/td>\n119<\/td>\n114<\/td>\n134<\/td>\n<\/tr>\n
BK-300VA<\/td>\n102<\/td>\n92<\/td>\n7*10<\/td>\n120<\/td>\n120<\/td>\n133<\/td>\n<\/tr>\n
BK-500VA<\/td>\n111<\/td>\n106<\/td>\n7*10<\/td>\n135<\/td>\n148<\/td>\n147<\/td>\n<\/tr>\n
BK-1000VA<\/td>\n126<\/td>\n126<\/td>\n7*10<\/td>\n151<\/td>\n161<\/td>\n166<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The operating environment of this series of transformers
\nThe ambient air temperature ranges from -5 \u2103 to+40 \u2103, with the highest monthly average temperature not exceeding+30 \u2103;
\nThe installation location shall not exceed an altitude of 1000m
\nThe relative humidity of the atmosphere does not exceed 50% when the ambient air temperature is+40. At lower temperatures, there can be relatively high relative humidity, with an average maximum humidity of 90% in the wettest month and an average minimum temperature of+25 \u2103.
\nIf you would like to learn more about the BK series control transformers, such as product manuals, specifications, prices, maintenance, and other information, please contact us.<\/p>","protected":false},"excerpt":{"rendered":"

The BK series control transformer is suitable for use in AC circuits ranging from 50Hz to 60Hz. It serves as a control power supply for general electrical appliances in machine tools and mechanical equipment, as well as for local lighting and indicator lights. The product complies with JB\/T9646 standard. Model and its meaning Some common […]<\/p>\n","protected":false},"author":1,"featured_media":8337,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[33,34],"class_list":["post-7890","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bianyaqi","tag-33","tag-34"],"_links":{"self":[{"href":"https:\/\/www.lewsin.cn\/index.php?rest_route=\/wp\/v2\/posts\/7890","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lewsin.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lewsin.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lewsin.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lewsin.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7890"}],"version-history":[{"count":4,"href":"https:\/\/www.lewsin.cn\/index.php?rest_route=\/wp\/v2\/posts\/7890\/revisions"}],"predecessor-version":[{"id":8614,"href":"https:\/\/www.lewsin.cn\/index.php?rest_route=\/wp\/v2\/posts\/7890\/revisions\/8614"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lewsin.cn\/index.php?rest_route=\/wp\/v2\/media\/8337"}],"wp:attachment":[{"href":"https:\/\/www.lewsin.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lewsin.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lewsin.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}