- \n
- Excellent electrical insulation performance<\/li>\n
- High mechanical strength and load-bearing capability<\/li>\n
- Suitable for indoor, outdoor, or indoor-outdoor installations<\/li>\n
- Available with copper or aluminum conductors<\/li>\n
- Resistant to moisture, UV radiation, and environmental pollution<\/li>\n
- Long service life with minimal maintenance<\/li>\n
- Available in porcelain, resin, and composite polymer designs<\/li>\n<\/ul>\n
Construction Types<\/h2>\n
Porcelain Wall Bushing<\/h3>\n
- \n
- High-strength electrical porcelain insulation<\/li>\n
- Excellent weather resistance<\/li>\n
- Suitable for medium and high-voltage applications<\/li>\n
- Widely used in substations and switchgear<\/li>\n<\/ul>\n
Composite Wall Bushing<\/h3>\n
- \n
- Silicone rubber housing<\/li>\n
- Fiberglass reinforced epoxy core<\/li>\n
- Lightweight and anti-pollution design<\/li>\n
- Excellent seismic performance<\/li>\n<\/ul>\n
Resin Cast Wall Bushing<\/h3>\n
- \n
- Epoxy resin insulation<\/li>\n
- Compact dimensions<\/li>\n
- Ideal for indoor switchgear and dry-type transformers<\/li>\n<\/ul>\n
Technical Specifications<\/h2>\n
\n\n\n\n
\n \nParameter<\/th>\n Value<\/th>\n<\/tr>\n<\/thead>\n \n Rated Voltage<\/td>\n 6kV \u2013 245kV<\/td>\n<\/tr>\n \n Rated Current<\/td>\n 200A \u2013 10000A<\/td>\n<\/tr>\n \n Frequency<\/td>\n 50\/60Hz<\/td>\n<\/tr>\n \n Conductor Material<\/td>\n Copper or Aluminum<\/td>\n<\/tr>\n \n Insulation Material<\/td>\n Porcelain, Epoxy Resin, Composite Polymer<\/td>\n<\/tr>\n \n Installation Type<\/td>\n Indoor, Outdoor, Indoor-Outdoor<\/td>\n<\/tr>\n \n Lightning Impulse Withstand Voltage<\/td>\n Up to 1050kV<\/td>\n<\/tr>\n \n Power Frequency Withstand Voltage<\/td>\n According to IEC Standards<\/td>\n<\/tr>\n \n Ambient Temperature<\/td>\n -40\u00b0C to +50\u00b0C<\/td>\n<\/tr>\n \n Altitude<\/td>\n Up to 1000m (higher on request)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n <\/p>\n
\n\n
\n Rated Voltage kV<\/td>\n Power Frequency Withstand Voltage \u2265kV<\/td>\n Lightning Impulse Withstand Voltage \u2265kV<\/td>\n<\/tr>\n \n Dry\/Wet Withstand<\/td>\n Break Through<\/td>\n Visible Corona<\/td>\n<\/tr>\n \n 6<\/td>\n 23<\/td>\n 58<\/td>\n \/<\/td>\n 60<\/td>\n<\/tr>\n \n 10<\/td>\n 30(37.5)<\/td>\n 75<\/td>\n \/<\/td>\n 75(93.8)<\/td>\n<\/tr>\n \n 20<\/td>\n 50<\/td>\n 120<\/td>\n 14.8<\/td>\n 125<\/td>\n<\/tr>\n \n 35<\/td>\n 80(100)<\/td>\n 176<\/td>\n 25.8(32.2)<\/td>\n 185(231)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n <\/p>\n<\/div>\n<\/div>\n
Main Applications<\/h2>\n
- \n
- Electrical substations<\/li>\n
- Power generation plants<\/li>\n
- Transmission and distribution networks<\/li>\n
- Transformer installations<\/li>\n
- GIS and AIS switchgear<\/li>\n
- Ring Main Units (RMU)<\/li>\n
- Industrial power systems<\/li>\n
- Busbar wall penetration systems<\/li>\n
- Renewable energy projects<\/li>\n<\/ul>\n
Advantages<\/h2>\n
- \n
- Ensures safe conductor passage through grounded structures<\/li>\n
- Prevents flashover and insulation failure<\/li>\n
- Enhances system reliability and operational safety<\/li>\n
- Supports high current and high voltage applications<\/li>\n
- Suitable for harsh environmental conditions<\/li>\n
- Available in customized dimensions and ratings<\/li>\n<\/ul>\n
Available Voltage Classes<\/h2>\n
\n\n\n\n
\n \nVoltage Class<\/th>\n Typical Applications<\/th>\n<\/tr>\n<\/thead>\n \n 6kV \u2013 12kV<\/td>\n Distribution Switchgear<\/td>\n<\/tr>\n \n 24kV \u2013 36kV<\/td>\n Medium Voltage Substations<\/td>\n<\/tr>\n \n 40.5kV \u2013 72.5kV<\/td>\n Transmission Networks<\/td>\n<\/tr>\n \n 126kV \u2013 245kV<\/td>\n High Voltage Substations<\/td>\n<\/tr>\n \n Above 245kV<\/td>\n Extra High Voltage Systems<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n <\/p>\n
Model Meaning<\/h2>\n
C – indoor copper conductor wall bushing.
\nCL – Indoor – aluminium conductor wall bushing.
\nCWL – outdoor – indoor aluminium conductor wall bushing
\nCB – Indoor – round conductor ceramic wall bushing.
\nCWB – outdoor – indoor round conductor ceramic wall bushing\u00a0 ;
\nB – bending damage load rating, 7.5kN.
\nCLB – indoor aluminium conductor wall bushing (reinforced)
\nCWLB – outdoor – outdoor aluminium conductor wall bushing (reinforced)
\nCW – outdoor – indoor copper conductor wall bushing
\nCWWL – Outdoor – Indoor anti-pollution aluminium conductor wall bushing
\nCWW – Outdoor – Indoor anti-pollution copper conductor wall bushing
\nCM – Indoor busbar wall bushing
\nCMW – Outdoor busbar wall bushing
\nCMWW – outdoor – indoor anti-pollution copper conductor wall bushing
\nExample: Model CWWL-35\/630-3
\n35kV, 630A current, outdoor and indoor anti-pollution aluminium conductor wall bushing , suitable for class 3 fouling area.
\nExample: CWWL-35\/630-1-G
\n35kV, 630A, outdoor-indoor highland anti-pollution aluminium conductor wall bushing for class 1 foul areas.
\nExample: Model CWWB-35Q\/630
\n35kV, 630A, large creepage distance copper conductor wall bushing<\/p>\n<\/p>\n
Working Conditions<\/h2>\n
- \n
- The bushing is suitable for use in ambient temperatures from -40\u00b0C to 40\u00b0C. It is not suitable for use under conditions that would reduce the performance of the casing or in the case of condensation on the surface of the indoor part of the casing.<\/li>\n
- When the ambient temperature of the bushing is above +40\u00b0C, but not exceeding +60\u00b0C, it is recommended that the rated current load of the bushing be reduced by 1.8\u00b0C for every 1\u00b0C increase in ambient temperature.<\/li>\n
- When the bushing is used at an ambient temperature higher than +40\u00b0C and in accordance with the maximum permissible heating temperature specified in GB12944.1, Article 5.1, the operating current is allowed to be overloaded for a long period of time, and it is recommended that the rated current be reduced by minus 0.5% for every 1\u00b0C decrease in ambient temperature 0.5%, but the increase should not be greater than 20% of the rated current.<\/li>\n
- The bushings can be divided into five types according to the place of use: indoor common type, outdoor-outdoor common type, outdoor-indoor anti-pollution type, outdoor-indoor plateau type, outdoor-indoor plateau anti-pollution type.
\nThe indoor general type is generally suitable for installation sites up to 1000m above sea level, but the installation site should be free of obvious dirt.
\nThe outdoor and indoor anti-pollution type is suitable for dirty areas where the installation site does not exceed 1000m above sea level. For 35kV casing in severely and heavily fouled areas, 63kV oil-paper capacitive wall bushing can be used.
\nThe outdoor and indoor plateau type is suitable for installation sites up to 3000m above sea level.
\nThe outdoor and indoor plateau type is suitable for installation in dirty areas with an altitude of 3000m or less.<\/li>\n<\/ol>\n<\/p>\n
![\"35kv](\"http:\/\/www.wolunelectric.com\/wp-content\/uploads\/2023\/02\/35kV-big-current-wall-bushing.jpg\")
35kv big current wall bushing<\/strong><\/figcaption><\/figure>\n <\/p>\n
<\/p>\n
![\"high](\"http:\/\/www.wolunelectric.com\/wp-content\/uploads\/2023\/02\/High-Voltage-Wall-Bushing.jpg\")
high voltage wall bushing<\/strong><\/figcaption><\/figure>\n ![\"20kv](\"http:\/\/www.wolunelectric.com\/wp-content\/uploads\/2023\/02\/20KV-35KV-WALL-BUSHING-1.jpg\")
20kv 35kv wall bushing<\/strong><\/figcaption><\/figure>\n ![\"dry](\"http:\/\/www.wolunelectric.com\/wp-content\/uploads\/2023\/02\/dry-type-cast-resin-wall-bushing-1.jpg\")
dry type cast resin wall bushing<\/strong><\/figcaption><\/figure>\n ![\"10kv](\"http:\/\/www.wolunelectric.com\/wp-content\/uploads\/2023\/02\/10kv-wall-bushing-2.gif\")
10kv wall bushing<\/strong><\/figcaption><\/figure>\n <\/p>","protected":false},"excerpt":{"rendered":"
High Voltage Wall Bushings for substations, transformers, switchgear, and power transmission systems.<\/p>\n
Available in porcelain, epoxy resin, and composite polymer designs from 6kV to 245kV with current ratings up to 10000A.<\/p>","protected":false},"featured_media":2564,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"High Voltage Wall Bushing Manufacturer | Porcelain & Composite Wall Bushings 6kV\u2013245kV","_seopress_titles_desc":"High Voltage Wall Bushings for substations, transformers, switchgear, and power transmission systems. Available in porcelain, epoxy resin, and composite polymer designs from 6kV to 245kV with current ratings up to 10000A.","_seopress_robots_index":""},"product_brand":[],"product_cat":[81],"product_tag":[],"class_list":{"0":"post-2565","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-wall-bushing","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product\/2565","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\/2564"}],"wp:attachment":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/media?parent=2565"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_brand?post=2565"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_cat?post=2565"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_tag?post=2565"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}