420kN insulators U420B Suspension Electrical Glass Insulator

Glass insulator is a special insulation component used in overhead transmission lines to provide insulation and support for wires. Jiangxi Huayao Electric Co., Ltd., which is located in Shangbu Town Industrial Park, Luxi County, Pingxiang City, Jiangxi Province,China is one of the leading glass insulator manufacturers in China. The registered capital of the company is 120 million yuan, covering an area of 47 acres, with a total construction area of 17200 square meters and more than 150 employees.

Structural composition:

The product consists of an iron cap, tempered glass parts, and steel feet, and is integrated with cement adhesive. This product adopts the most advanced cylindrical head structure internationally, characterized by small head size, light weight, high strength, and large creepage distance. Can save metal materials and reduce line costs. To meet the needs of live working, traditional domestic structural shapes are used on the brim of the hat.

Main types of glass insulator：

Glass insulator is including standard type, pollution resistant type, DC type, spherical type, aerodynamic type, ground wire type, and contact network for electrified railways Jiangxi Huayao electric Co.,ltd produce standard type glass insulator 40-550Kn, Pollution resistant type 70-400Kn, mutil-umbrella type 120-330kN, Glass insulator aerodynamic type 120-300kN, ground wire type.

Following is standard type glass insulator 40-550Kn:

Product Details： Place of Origin: China Brand name:HUAYAO Certification:ISO9001 420kN standard disc suspension glass insulator U420BL Daily output:10000 pieces 6 pieces in wooden case, then put in pallet. Payment & Shipping： Minimum Order Quantity: 10 pieces Packaging Details:normal export packaging Supply Ability:50000pcs Delivery Port:Ningbo,Shanghai Payment term:TT, L/C, FCA

Quick detail：

Glass Standard Profile Suspension Insulators LXP-420 / U420B Dimensions Diameter (D): 360mm Spacing (H): 205mm Creepage  Distance: 550mm Coupling Size: 28mm Mechanical Values Mechanical Failing Load: 420kN Tension Proof: 210kN Electrical Values Dry Power-frequency Withstand Voltage: 90kV Wet Power-frequency Withstand Voltage: 55kV Dry Lightning Impulse Withstand Voltage: 140kV Puncture Withstand Voltage: 130kV Radio Influence Voltage Data Test Voltage RMS to Ground: 10kV Maximum RIV at 1000 kHz: 50μV Packing and Shipping Data Net Weight, Approximate: 13.8kg

The reason why glass insulator those years?

The Production process flow:

The production process of glass insulators in Jiangxi Huayao Electric Co.,Ltd is as follows:

Mix raw material=>melt glass liquid=>press to glass insulator shape=> tempering treatment=>cold and shock test=> Glue assembly=> routine test and other test=> Finished products package.

Production process flow

The production process of glass insulators in the company is as follows:

Ingredients: Ingredients refer to the uniform mixing of different raw materials according to a certain ratio. Currently, a forced vertical mixer is generally used for ingredient preparation. The key to ingredients is the uniformity of mixing different raw materials.

Melting: Melting refers to the process of heating ingredients at high temperatures to form a uniform glass liquid, while clarification refers to the exhaust treatment of the liquid formed by melting raw materials.

Pressing: After melting and clarification, the glass liquid enters the pressing process through the feeding system, that is, the glass is hydraulically made into glass insulation parts, usually achieved through a fully automatic hydraulic forming machine. The pressing shape is controlled by the glass mold, and the amount of glass liquid used to press one insulator is also controlled to ensure the consistency of the insulator product.

Tempering: Subsequently, the glass piece is subjected to tempering treatment, which means controlled cooling of the glass piece to obtain permanent surface prestress. The equipment involved in the tempering process includes temperature equalization furnaces, tempering machines, etc.

Cold and hot shock: Tempered glass pieces undergo cold and hot shock tests, using a special nickel sulfide treatment furnace and a special nickel sulfide elimination process to homogenize the glass pieces. The quality of the nickel sulfide removal process directly affects the important indicator of the glass insulator after operation - the self explosion rate.

Glue assembly: Use an assembly machine with steel foot positioning assistance to assemble and glue the insulator insulation parts, steel feet, and steel caps. This step requires attention to ensuring the coaxiality of the steel feet, insulation parts, and steel caps. Poor coaxiality can also lead to high self explosion rates. Inspection: Conduct a 50% tensile load test on the glass insulators that have been glued together, check the height of the insulator structure, etc., to ensure that the insulators meet the standard requirements.

Test report of Jiangxi huayao eletric Co.,ltd glass insulator
Jiangxi Huayao electric Co.,ltd provide test report from third party such as Xi'an High Voltage Apparatus Research Institute Co., Ltd. (XIHARI) ,National ceramic product quality inspection and test center.
Pre-shipment inspection from third party such as INTERTEK, SGS, BV or customer themselves.

Standard of glass insulator:

5. 7.Power frequency puncture withstand test

The results of power frequency puncture withstand test please check the following table, no puncture.

Customer visit：