240kN insulators U240BP stain-resistant Suspension Electrical Glass Insulator

240kN standard disc suspension glass insulator U240BP 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.

Huayao advantage products are glass insulators with a capacity of 40kN-550kN, which can meet the requirements of 10kV-500kV ultra-high voltage and extra high voltage transmission and transformation lines.
Huayao strictly complies with GB, ANSI, BS, DIN, AS, IEC standard designs, applicable to power transmission lines and substations.
Huayao has established a production line for ultra-high voltage tempered glass insulators with advanced production technology by introducing world-class production and testing equipment from Germany, Italy, and other countries. It has the ability to produce over 6 million pieces of AC and DC glass insulators annually.

The advantage of glass insulator as following:

Zero value self-breakage, easy to detect, tempered glass insulators have the characteristic of zero value self-breakage, which can be observed on the ground or helicopter without the need to climb the pole and test each piece, reducing the labor intensity of workers and introducing products from the production line. The annual operating self-rupture rate is 0.02-0.04%, which can save maintenance costs of the line. 
The glass insulator has good resistance to arc and vibration, and the new surface of the glass insulator subjected to lightning burns during operation is still a smooth glass body with a tempered internal stress protection layer. Therefore, it still maintains sufficient insulation performance and mechanical strength. There have been multiple incidents of conductor dancing caused by ice on 500kV transmission lines, and the mechanical and electrical performance has not deteriorated after testing the glass insulator after conductor dancing. 
According to the general feedback from the power department, glass insulators have good self-cleaning performance and are not easy to age. Glass insulators used in southern power lines are less prone to fouling and are easy to clean after rain. Regular sampling and testing of the mechanical and electrical performance of glass insulators on typical regional power lines after operation have been conducted. Accumulated data from thousands of years shows that the mechanical and electrical performance of glass insulators after 40 years of operation is basically consistent with those before leaving the factory, and there is no aging phenomenon.

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 anti fog type glass insulator 40-550Kn:

Product Details

240kN standard disc suspension glass insulator U240BP Place of Origin:  China Brand name:  HUAYAO Certification:  ISO9001 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 Stain-resistant suspension Insulators LXWP4-240 / U240BP/170 Dimensions Diameter (D): 320mm Spacing (H): 170mm Creepage Distance: 550mm Coupling Size: 20mm Mechanical Values Mechanical Failing Load: 240kN 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: 10.5kg

The advantage of glass insulator:

Mechanical strength:
The mechanical strength of glass insulators is 1 to 2 times higher than that of porcelain insulators, which makes glass insulators perform better under external forces and impacts.
Stability and aging:
The performance of glass insulators is more stable, not easy to age, and the electrical performance is higher than that of porcelain insulators.
Transparency and inspection:
The transparency of glass insulators makes it easy to find small cracks and internal defects during shape inspection, which is easy to find and replace in time.
Maintenance requirements:
The use of glass insulators can cancel the live periodic preventive test, because its self-breaking characteristics make it easy for line inspectors to find damaged insulators and replace them in time.
Productivity and cost:
Glass insulators have fewer production processes and short production cycles, which is convenient for mechanized and automated production and improves production efficiency.
Self-breaking feature:
Glass insulators have "self-breaking" characteristics, that is, when the insulator is defective, it will automatically break, which is convenient for line patrol personnel to find and replace.
In order to meet the market request, Jiangxi Huayao electric Co.,ltd has established a production line for ultra-high voltage tempered glass insulators with advanced production technology by introducing world-class production and testing equipment from Germany, Italy, and other countries. It has the ability to produce over 6 million pieces of AC and DC glass insulators annually.

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 electric 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.

The Production process flow:

Standard of glass insulator:

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