{"id":916,"date":"2021-04-28T08:14:35","date_gmt":"2021-04-28T08:14:35","guid":{"rendered":"https:\/\/www.wolunelectric.com\/?post_type=product&p=916"},"modified":"2026-05-13T14:52:32","modified_gmt":"2026-05-13T06:52:32","slug":"lw8-40-5-33kv-outdoor-high-voltage-sf6-circuit-breaker","status":"publish","type":"product","link":"https:\/\/www.wolunelectric.com\/th\/product\/lw8-40-5-33kv-outdoor-high-voltage-sf6-circuit-breaker\/","title":{"rendered":"LW8-40.5 33kV Outdoor High Voltage SF6 Circuit Breaker"},"content":{"rendered":"

 <\/p>\n

General Introduction<\/strong><\/h2>\n

LW8A-40.5 Type 12kv\u00a0 24kv\u00a0 33kv Outdoor Sf6 Circuit Breaker\u00a0\u00a0is an outdoor device used in AC 50HZ three-phase 40.5KV power system. It is applicable to locations that need frequent operating in rated current or under repeatedly on\/off short circuit current. Containing the current transformer for measurement and protection, it can directly replace SW2-35 less oil circuit breaker and various types of oil circuit breaker with transition bracket. It can also be used as a tie breaker and switching capacitor group situations with CT14 type spring mechanism.<\/p>\n

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Working Conditions<\/strong><\/h2>\n

Ambient\u00a0temperature:-30\u2103~+40\u2103<\/p>\n

Altitude:\u22643000m<\/p>\n

Wind pressure:\u2264700Pa<\/p>\n

Relative humidity:daily average relative humidity: \u226495%;monthly average relative humidity\u226490;daily average saturated vapor pressure \u22642.2KPa;monthly average value\u00a0\u00a0 \u22641.8KPa<\/p>\n

Air pollution level:\u2162<\/p>\n

Earthquake intensity:\u22648 degree<\/p>\n

The installation should be free from fire, explosion, severe vibration, chemical corrosion and serious pollution<\/p>\n

 <\/p>\n

Key Features<\/h2>\n
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  • Adopts high-purity SF6 gas for insulation and arc extinction, excellent electrical performance<\/li>\n
  • Porcelain column type structure, three-pole mechanical linkage, synchronous operation<\/li>\n
  • High-strength fully sealed design, waterproof, dustproof and anti-condensation<\/li>\n
  • Spring operating mechanism, support manual and electric energy storage, local and remote control<\/li>\n
  • High short-circuit breaking capacity, stable operation under heavy load and fault conditions<\/li>\n
  • Corrosion-resistant outer structure, suitable for outdoor harsh climate and high altitude areas<\/li>\n
  • Long service life, maintenance-free in normal operation period<\/li>\n<\/ul>\n

     <\/p>\n

    Technical Specification<\/strong><\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    \u00a0No.<\/td>\n\u00a0Item<\/td>\n\u00a0Unit<\/td>\nData<\/td>\n<\/tr>\n
    \u00a01<\/td>\n\u00a0Rated voltage<\/td>\nKV<\/td>\n40.5<\/td>\n<\/tr>\n
    2<\/td>\nRated current<\/td>\nA<\/td>\n2000<\/td>\n<\/tr>\n
    3<\/td>\nRated frequency<\/td>\nHZ<\/td>\n50<\/td>\n<\/tr>\n
    5<\/td>\nRated short circuit breaking current<\/td>\nKA<\/td>\n31.5<\/td>\n<\/tr>\n
    6<\/td>\nRated short-circuit current (peak)<\/td>\nKA<\/td>\n50<\/td>\n<\/tr>\n
    7<\/td>\nRated short-circuit withstand current<\/td>\nKA<\/td>\n20<\/td>\n<\/tr>\n
    10<\/td>\nRated short circuit closing current(peak)<\/td>\nKA<\/td>\n50<\/td>\n<\/tr>\n
    13<\/td>\nElectrical life of rated short circuit breaking current<\/td>\ntimes<\/td>\n30<\/td>\n<\/tr>\n
    14<\/td>\nRated short circuit duration<\/td>\ns<\/td>\n4<\/td>\n<\/tr>\n
    15<\/td>\nRated line charging close current<\/td>\nA<\/td>\n31.5<\/td>\n<\/tr>\n
    16<\/td>\nRated operation sequence<\/td>\n<\/td>\nO-0.3s-CO-180s-CO<\/td>\n<\/tr>\n
    17<\/td>\nSplit time<\/td>\nms<\/td>\n\u226460<\/td>\n<\/tr>\n
    18<\/td>\nClosing time<\/td>\nms<\/td>\n\u2264100<\/td>\n<\/tr>\n
    19<\/td>\nVelocity of rigid composite<\/td>\nm\/s<\/td>\n3.2<\/td>\n<\/tr>\n
    20<\/td>\nVelocity of rigidity<\/td>\nm\/s<\/td>\n3.4<\/td>\n<\/tr>\n
    21<\/td>\nMechanical life<\/td>\ntimes<\/td>\n6000<\/td>\n<\/tr>\n
    24<\/td>\nQuality of each circuit breaker<\/td>\nkg<\/td>\n1400<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

     <\/p>\n

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    Application Scope<\/h2>\n
    <\/div>\n
    33kV \/ 40.5kV outdoor substations, power grid transmission lines, petrochemical plants, mining enterprises, industrial and commercial power distribution systems, used for line closing, opening, overload and short-circuit fault protection.<\/div>\n
    <\/div>\n

    Our Advantage & Service<\/h2>\n
    <\/div>\n
    We supply original factory LW8-40.5 high voltage SF6 circuit breakers with complete specifications and competitive wholesale price. Support OEM, customized parameters, installation drawings and global technical after-sales service. All products comply with international high voltage equipment standards.<\/div>\n
    <\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
    \n
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    <\/div>\n<\/div>\n<\/div>\n

    Outline Dimension<\/h2>\n

    \"LW8<\/p>\n

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

    LW8-40.5 33kV Outdoor High Voltage SF6 Circuit Breaker is a porcelain column type outdoor switchgear with SF6 insulation and arc extinction. It features stable breaking performance, compact structure and long service life, widely used in 33kV power substations and transmission lines.<\/p>","protected":false},"featured_media":917,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"LW8-40.5 33kV outdoor SF6 circuit breaker, porcelain column type, 1600A-3150A, 31.5kA-40kA, spring mechanism for substation power transmission protection.","_seopress_robots_index":""},"product_brand":[],"product_cat":[44],"product_tag":[63],"class_list":{"0":"post-916","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-vacuum-circuit-breaker","7":"product_tag-sf6-circuit-breaker","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product\/916","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\/917"}],"wp:attachment":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/media?parent=916"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_brand?post=916"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_cat?post=916"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_tag?post=916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}