{"id":2842,"date":"2023-04-20T10:38:56","date_gmt":"2023-04-20T02:38:56","guid":{"rendered":"https:\/\/www.wolunelectric.com\/?post_type=product&#038;p=2842"},"modified":"2026-05-18T15:16:52","modified_gmt":"2026-05-18T07:16:52","slug":"lzzbj9-24-180b-2-%e3%80%81-lzzbj9-24-180b-4-current-transformer","status":"publish","type":"product","link":"https:\/\/www.wolunelectric.com\/th\/product\/lzzbj9-24-180b-2-%e3%80%81-lzzbj9-24-180b-4-current-transformer\/","title":{"rendered":"LZZBJ9-24-180b\/2 \u3001 LZZBJ9-24-180b\/4 Current Transformer"},"content":{"rendered":"<h2>Introduction<\/h2>\n<p>LZZBJ9-24-180b\/2 and LZZBJ9-24-180b\/4 are indoor epoxy resin cast current transformers designed for 24kV medium voltage power systems. These current transformers are widely used for current measurement, electric energy metering and relay protection in indoor switchgear, substations and power distribution systems.<\/p>\n<p>The transformers adopt high-quality epoxy resin vacuum casting insulation with excellent dielectric strength, compact structure, stable performance and long service life. They are suitable for frequency 50Hz\/60Hz AC systems with rated voltage up to 24kV.<\/p>\n<p>&nbsp;<\/p>\n<h2>Product Features<\/h2>\n<ul data-spread=\"false\">\n<li>High quality epoxy resin cast insulation<\/li>\n<li>Excellent dynamic and thermal stability<\/li>\n<li>Accurate current measurement and protection performance<\/li>\n<li>Compact structure for switchgear installation<\/li>\n<li>Maintenance-free operation<\/li>\n<li>Flame retardant and moisture resistant<\/li>\n<li>Suitable for indoor medium voltage applications<\/li>\n<li>Complies with IEC and GB standards<\/li>\n<li><\/li>\n<\/ul>\n<h2><strong>Technical Data<\/strong><\/h2>\n<p>&#8211; Rated insulation level: 24\/65\/125kV<br \/>\n&#8211; Rated secondary current: 5A or 1A<br \/>\n&#8211; Power frequency withstand voltage: 17.5kV, 24kV<br \/>\n&#8211; Rated frequency: 50\/60Hz<br \/>\n&#8211; Ambient temperature: -5\u00b0C ~+40\u00b0C<br \/>\n&#8211; Altitude : \u22641000m<br \/>\n-Standard: IEC 60044-1, GB1208-200<\/p>\n<p>&nbsp;<\/p>\n<h2><strong>Specification<\/strong><\/h2>\n<h3>LZZBJ9-24\/180b\/2<\/h3>\n<table>\n<tbody>\n<tr>\n<td rowspan=\"3\" width=\"67\">Rated transformer<\/p>\n<p>Ratio(A)<\/td>\n<td rowspan=\"3\" width=\"96\">Secondary accuracy classes combination<\/td>\n<td colspan=\"3\" width=\"157\">Rated output<\/p>\n<p>(VA)<\/td>\n<td rowspan=\"3\" width=\"87\">Measuring current\u2019s instrument security factor<\/td>\n<td rowspan=\"3\" width=\"74\">Protective current\u2019s accuracy limit factor<\/td>\n<td rowspan=\"3\" width=\"74\">Rated short-time thermal current (kA\/S)<\/td>\n<td rowspan=\"3\" width=\"64\">Rated dynamic current ( kA)<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\" width=\"84\">Measuring<\/td>\n<td width=\"74\">Protective<\/td>\n<\/tr>\n<tr>\n<td width=\"51\">0.2(S)<\/td>\n<td width=\"33\">0.5<\/td>\n<td width=\"74\">10P<\/td>\n<\/tr>\n<tr>\n<td width=\"67\">20-200\/5<\/td>\n<td rowspan=\"8\" width=\"96\">0.2\uff08S\uff09\/0.2(S)<\/p>\n<p>0.2(S)\/0.5<\/p>\n<p>0.2(S)\/10P<\/p>\n<p>0.5\/10P<\/td>\n<td rowspan=\"8\" width=\"51\">10<\/p>\n<p>15<\/td>\n<td rowspan=\"8\" width=\"33\">15<\/td>\n<td rowspan=\"5\" width=\"74\">15<\/td>\n<td rowspan=\"8\" width=\"87\">5<\/p>\n<p>(10)<\/td>\n<td rowspan=\"8\" width=\"74\">10<\/p>\n<p>15<\/td>\n<td width=\"74\">150I1n<\/td>\n<td width=\"64\">375I1n<\/td>\n<\/tr>\n<tr>\n<td width=\"67\">300\/5<\/td>\n<td width=\"74\">31.5<\/td>\n<td width=\"64\">80<\/td>\n<\/tr>\n<tr>\n<td width=\"67\">400\/5<\/td>\n<td width=\"74\">31.5<\/td>\n<td width=\"64\">80<\/td>\n<\/tr>\n<tr>\n<td width=\"67\">500\/5<\/td>\n<td width=\"74\">40<\/td>\n<td width=\"64\">100<\/td>\n<\/tr>\n<tr>\n<td width=\"67\">600\/5<\/td>\n<td width=\"74\">50<\/td>\n<td width=\"64\">125<\/td>\n<\/tr>\n<tr>\n<td width=\"67\">800\/5<\/td>\n<td rowspan=\"3\" width=\"74\">20<\/td>\n<td width=\"74\">63<\/td>\n<td width=\"64\">125<\/td>\n<\/tr>\n<tr>\n<td width=\"67\">1000\/5<\/td>\n<td width=\"74\">80<\/td>\n<td width=\"64\">160<\/td>\n<\/tr>\n<tr>\n<td width=\"67\">1250\/5<\/td>\n<td width=\"74\">80<\/td>\n<td width=\"64\">160<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>LZZBJ9-24-180b\/4<\/h3>\n<ol>\n<li>\n<h4><strong>Three secondary single ratio<\/strong><\/h4>\n<\/li>\n<\/ol>\n<table style=\"height: 436px;\" width=\"1434\">\n<tbody>\n<tr>\n<td rowspan=\"3\" width=\"18%\">Rated transformer<\/p>\n<p>Ratio(A)<\/td>\n<td rowspan=\"3\" width=\"16%\">Secondary accuracy classes combination<\/td>\n<td colspan=\"3\" width=\"26%\">Rated output<\/p>\n<p>(VA)<\/td>\n<td rowspan=\"3\" width=\"6%\">FS<\/td>\n<td rowspan=\"3\" width=\"7%\">ALF<\/td>\n<td rowspan=\"3\" width=\"14%\">Rated short-time thermal current (kA\/S)<\/td>\n<td rowspan=\"3\" width=\"10%\">Rated dynamic current ( kA)<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\" width=\"13%\">Measuring<\/td>\n<td width=\"12%\">Protective<\/td>\n<\/tr>\n<tr>\n<td width=\"8%\">0.2(S)<\/td>\n<td width=\"5%\">0.5<\/td>\n<td width=\"12%\">10P<\/td>\n<\/tr>\n<tr>\n<td width=\"18%\">15-30\/5<\/p>\n<p>20-40\/5<\/p>\n<p>\u2026\u2026\u2026.<\/p>\n<p>500-1000\/5<\/td>\n<td rowspan=\"6\" width=\"16%\">0.2S\/0.5\/10P<\/p>\n<p>0.2\/0.5\/10P<\/p>\n<p>0.5\/0.5\/10P<\/p>\n<p>0.2S\/10P\/10P<\/p>\n<p>0.2\/10P\/10P<\/p>\n<p>0.5\/10P\/10P<\/td>\n<td rowspan=\"6\" width=\"8%\">15<\/td>\n<td rowspan=\"6\" width=\"5%\">15<\/td>\n<td rowspan=\"6\" width=\"12%\">10<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>15<\/td>\n<td rowspan=\"6\" width=\"6%\">5<\/p>\n<p>(10)<\/td>\n<td rowspan=\"6\" width=\"7%\">10<\/p>\n<p>15<\/p>\n<p>20<\/td>\n<td width=\"14%\">100I1n<\/td>\n<td width=\"10%\">250I1n<\/td>\n<\/tr>\n<tr>\n<td width=\"18%\">600-1200\/5<\/td>\n<td width=\"14%\">50<\/td>\n<td width=\"10%\">105<\/td>\n<\/tr>\n<tr>\n<td width=\"18%\">750-1500\/5<\/td>\n<td width=\"14%\">63<\/td>\n<td width=\"10%\">130<\/td>\n<\/tr>\n<tr>\n<td width=\"18%\">800-1600\/5<\/td>\n<td width=\"14%\">80<\/td>\n<td width=\"10%\">160<\/td>\n<\/tr>\n<tr>\n<td width=\"18%\">1000-2000\/5<\/td>\n<td width=\"14%\">80<\/td>\n<td width=\"10%\">160<\/td>\n<\/tr>\n<tr>\n<td width=\"18%\">1250-2500\/5<\/td>\n<td width=\"14%\">100<\/td>\n<td width=\"10%\">200<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4><strong>2.Three secondary double ratio<\/strong><\/h4>\n<table style=\"height: 404px;\" width=\"1428\">\n<tbody>\n<tr>\n<td rowspan=\"3\" width=\"17%\">Rated transformer<\/p>\n<p>Ratio(A)<\/td>\n<td rowspan=\"3\" width=\"16%\">Secondary accuracy classes combination<\/td>\n<td colspan=\"3\" width=\"27%\">Rated output<\/p>\n<p>(VA)<\/td>\n<td rowspan=\"3\" width=\"7%\">FS<\/td>\n<td rowspan=\"3\" width=\"5%\">ALF<\/td>\n<td rowspan=\"3\" width=\"13%\">Rated short-time thermal current (kA\/S)<\/td>\n<td rowspan=\"3\" width=\"11%\">Rated dynamic current ( kA)<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\" width=\"14%\">Measuring<\/td>\n<td width=\"13%\">Protective<\/td>\n<\/tr>\n<tr>\n<td width=\"8%\">0.2(S)<\/td>\n<td width=\"5%\">0.5<\/td>\n<td width=\"13%\">10P<\/td>\n<\/tr>\n<tr>\n<td width=\"17%\">15-300\/5<\/td>\n<td rowspan=\"7\" width=\"16%\">0.2S\/0.5\/10P<\/p>\n<p>0.2\/0.5\/10P<\/p>\n<p>0.5\/0.5\/10P<\/p>\n<p>0.2S\/10P\/10P<\/p>\n<p>0.2\/10P\/10P<\/p>\n<p>0.5\/10P\/10P<\/td>\n<td rowspan=\"7\" width=\"8%\">15<\/td>\n<td rowspan=\"7\" width=\"5%\">15<\/td>\n<td rowspan=\"7\" width=\"13%\">15<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>20<\/td>\n<td rowspan=\"7\" width=\"7%\">5<\/p>\n<p>(10)<\/td>\n<td rowspan=\"7\" width=\"5%\">10<\/p>\n<p>15<\/p>\n<p>20<\/td>\n<td width=\"13%\">100I1n<\/td>\n<td width=\"11%\">250I1n<\/td>\n<\/tr>\n<tr>\n<td width=\"17%\">400\/5\u00a0~600\/5<\/td>\n<td width=\"13%\">50<\/td>\n<td width=\"11%\">105<\/td>\n<\/tr>\n<tr>\n<td width=\"17%\">800-1000\/5<\/td>\n<td width=\"13%\">63<\/td>\n<td width=\"11%\">130<\/td>\n<\/tr>\n<tr>\n<td width=\"17%\">1200\/5<\/td>\n<td width=\"13%\">80<\/td>\n<td width=\"11%\">160<\/td>\n<\/tr>\n<tr>\n<td width=\"17%\">1500\/5<\/td>\n<td width=\"13%\">80<\/td>\n<td width=\"11%\">160<\/td>\n<\/tr>\n<tr>\n<td width=\"17%\">2000\/5<\/td>\n<td width=\"13%\">100<\/td>\n<td width=\"11%\">200<\/td>\n<\/tr>\n<tr>\n<td width=\"17%\">2500\/5<\/td>\n<td width=\"13%\">125<\/td>\n<td width=\"11%\">200<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2><strong>Outline<\/strong><\/h2>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone  wp-image-2845\" src=\"http:\/\/www.wolunelectric.com\/wp-content\/uploads\/2023\/04\/LZZBJ9-24-180b-24.png\" alt=\"lzzbj9 24 180b\/2 \u3001 lzzbj9 24 180b\/4 current transformer\" width=\"1347\" height=\"806\" srcset=\"https:\/\/www.wolunelectric.com\/wp-content\/uploads\/2023\/04\/LZZBJ9-24-180b-24.png 513w, https:\/\/www.wolunelectric.com\/wp-content\/uploads\/2023\/04\/LZZBJ9-24-180b-24-300x180.png 300w\" sizes=\"(max-width: 1347px) 100vw, 1347px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>LZZBJ9-24-180b\/2 and LZZBJ9-24-180b\/4 are indoor epoxy resin cast current transformers designed for 24kV medium voltage power systems.<\/p>\n<p>They are widely used for current measurement, electric energy metering and relay protection in indoor switchgear and substations, featuring high insulation performance, compact structure and reliable operation<\/p>","protected":false},"featured_media":2846,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"LZZBJ9-24-180b\/2 & LZZBJ9-24-180b\/4 24kV Indoor Epoxy Resin Current Transformer","_seopress_titles_desc":"LZZBJ9-24-180b\/2 and LZZBJ9-24-180b\/4 24kV indoor epoxy resin current transformers for current measurement, energy metering and relay protection. IEC compliant CT for medium voltage switchgear systems.","_seopress_robots_index":""},"product_brand":[],"product_cat":[64],"product_tag":[],"class_list":{"0":"post-2842","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ctpt","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product\/2842","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/media\/2846"}],"wp:attachment":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/media?parent=2842"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_brand?post=2842"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_cat?post=2842"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_tag?post=2842"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}