{"id":1091,"date":"2021-05-10T08:17:58","date_gmt":"2021-05-10T08:17:58","guid":{"rendered":"https:\/\/www.wolunelectric.com\/?post_type=product&p=1091"},"modified":"2026-06-03T11:42:32","modified_gmt":"2026-06-03T03:42:32","slug":"57-31-57-32-57-33-57-34-57-35-line-post-insulator","status":"publish","type":"product","link":"https:\/\/www.wolunelectric.com\/ar\/product\/57-31-57-32-57-33-57-34-57-35-line-post-insulator\/","title":{"rendered":"57-31 57-32 57-32 57-33 57-34 57-35 \u0639\u0627\u0632\u0644 \u0639\u0645\u0648\u062f \u0627\u0644\u062e\u0637"},"content":{"rendered":"

The ANSI 57 Series Porcelain Line Post Insulators<\/strong> are designed for overhead distribution lines, substations, switchgear, and utility transmission systems.<\/p>\n

Manufactured from premium electrical-grade porcelain, these insulators provide reliable conductor support, superior electrical insulation, and high mechanical strength under various environmental conditions.<\/p>\n

The series includes 57-31, 57-32, 57-33, 57-34, and 57-35<\/strong> models, widely used in medium-voltage distribution networks worldwide.<\/p>\n

\n

Key Features<\/h2>\n
    \n
  • Manufactured according to ANSI standards<\/li>\n
  • High-strength glazed electrical porcelain<\/li>\n
  • Excellent dielectric performance<\/li>\n
  • High cantilever and tensile strength<\/li>\n
  • Superior resistance to pollution and weathering<\/li>\n
  • UV-resistant glaze finish<\/li>\n
  • Suitable for horizontal and vertical mounting<\/li>\n
  • Long service life with low maintenance<\/li>\n
  • Ideal for utility and industrial applications<\/li>\n<\/ul>\n

     <\/p>\n

    \"\"<\/p>\n

     <\/p>\n

    \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0641\u0646\u064a\u0629<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n
    ANSI Class<\/th>\n57-31<\/th>\n57-32<\/th>\n57-33<\/th>\n57-34<\/th>\n57-35<\/th>\n<\/tr>\n<\/thead>\n
    Nominal Voltage Class<\/td>\n11kV<\/td>\n22kV<\/td>\n33kV<\/td>\n35kV<\/td>\n46kV<\/td>\n<\/tr>\n
    Creepage Distance<\/td>\n356 mm<\/td>\n559 mm<\/td>\n737 mm<\/td>\n1015 mm<\/td>\n1145 mm<\/td>\n<\/tr>\n
    Dry Flashover Voltage<\/td>\n95 kV<\/td>\n125 kV<\/td>\n170 kV<\/td>\n200 kV<\/td>\n230 kV<\/td>\n<\/tr>\n
    Wet Flashover Voltage<\/td>\n60 kV<\/td>\n95 kV<\/td>\n125 kV<\/td>\n150 kV<\/td>\n180 kV<\/td>\n<\/tr>\n
    Critical Impulse Flashover Voltage<\/td>\n140 kV<\/td>\n205 kV<\/td>\n265 kV<\/td>\n300 kV<\/td>\n340 kV<\/td>\n<\/tr>\n
    Cantilever Strength<\/td>\n12.5 kN<\/td>\n12.5 kN<\/td>\n12.5 kN<\/td>\n12.5 kN<\/td>\n12.5 kN<\/td>\n<\/tr>\n
    Material<\/td>\nPorcelain<\/td>\nPorcelain<\/td>\nPorcelain<\/td>\nPorcelain<\/td>\nPorcelain<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    \"\"<\/p>","protected":false},"excerpt":{"rendered":"

    57 Series porcelain line post insulators designed for medium-voltage overhead lines and substations. ANSI-compliant, durable glazed porcelain construction with long service life.<\/p>","protected":false},"featured_media":1094,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"ANSI 57-31 57-32 57-33 57-34 57-35 Line Post Insulators | Porcelain Line Post Insulator","_seopress_titles_desc":"57 Series porcelain line post insulators designed for medium-voltage overhead lines and substations. ANSI-compliant, durable glazed porcelain construction with long service life.","_seopress_robots_index":""},"product_brand":[],"product_cat":[45],"product_tag":[],"class_list":{"0":"post-1091","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-high-voltage-insulator","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product\/1091","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/media\/1094"}],"wp:attachment":[{"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/media?parent=1091"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product_brand?post=1091"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product_cat?post=1091"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product_tag?post=1091"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}