a disc-type tempered glass insulator is a type of electrical insulator used to support and isolate electrical conductors (such as overhead power lines) from their supporting structures, which are often made of metal. these insulators are commonly used in high-voltage and medium-voltage power distribution systems
the disc-type glass insulator is characterized by its shape, which resembles a stack of cylindrical discs or disks. these discs are often made of glass or ceramic materials that have high dielectric strength, meaning they can resist the flow of electrical current. the insulator's design helps prevent the flow of electricity from the conductor to the supporting structure and provides an effective insulation barrier even in challenging weather conditions.
each disc in the insulator is typically cemented together with other discs to form a sturdy and reliable structure. the glass disc insulator is mounted on a metal or concrete structure, allowing the electrical conductor to pass through its center without coming into direct contact with the supporting material.
the primary function of the disc-type glass insulator is to ensure that electricity flows through the conductor without being leaked to the supporting structure or the ground. this is particularly important to prevent electrical arcing, which can damage equipment, cause power outages, and pose safety risks.
basic type | figure no. | minimum mechanical failing load(kn) | nominal diameter d(mm) | nominal spacing p(mm) | nominal creepage distance (mm) | standard coupling | wet power frequency withstand voltage (kv) | dry lightning impulse withstand voltage (kv) | power frequency puncture voltage (kv) | radio interference voltage (μ v) 10kv 1mhz | corona visual test p/c kv | power frequency electric arc voltage | impulse puncture voltage (p.u) | net weight (kg) |
u40b | 1-3 | 40 | 178 | 110 | 190 | 11 | 25 | 50 | 90 | 50 | 18/22 | 0.12s/20ka | 2.8 | 2.1 |
u70bs | 1-3 | 70 | 255 | 127 | 320 | 16 | 40 | 100 | 130 | 50 | 18/22 | 0.12s/20ka | 2.8 | 3.5 |
u70bl | 1-3 | 70 | 255 | 146 | 320 | 16 | 40 | 100 | 130 | 50 | 18/22 | 0.12s/20ka | 2.8 | 3.6 |
u100bs | 1-3 | 100 | 255 | 146 | 320 | 16 | 40 | 100 | 130 | 50 | 18/22 | 0.12s/20ka | 2.8 | 4 |
u120b | 1-3 | 120 | 255 | 146 | 400 | 16 | 40 | 100 | 130 | 50 | 18/22 | 0.12s/20ka | 2.8 | 4 |
u160bs | 1-3 | 160 | 280 | 146 | 400 | 20 | 45 | 110 | 130 | 50 | 18/22 | 0.12s/20ka | 2.8 | 6.5 |
u160bm | 1-3 | 160 | 280 | 155 | 400 | 20 | 45 | 110 | 130 | 50 | 18/22 | 0.12s/20ka | 2.8 | 6.6 |
u160bl | 1-3 | 160 | 280 | 170 | 400 | 20 | 45 | 110 | 130 | 50 | 18/22 | 0.12s/20ka | 2.8 | 6.7 |
u210b | 1-3 | 210 | 280 | 170 | 400 | 20 | 45 | 110 | 130 | 50 | 18/22 | 0.12s/20ka | 2.8 | 7.2 |
u240b | 1-3 | 240 | 280 | 170 | 400 | 20/24 | 45 | 110 | 130 | 50 | 18/22 | 0.12s/20ka | 2.8 | 7.2 |
u300b | 1-3 | 300 | 320 | 195 | 485 | 24 | 50 | 130 | 130 | 50 | 18/22 | 0.12s/20ka | 2.8 | 10.6 |
u420b | 1-3 | 420 | 360 | 205 | 550 | 28 | 80 | 140 | 140 | 50 | 18/22 | 0.12s/20ka | 2.8 | 16 |
u550b | 1-3 | 550 | 380 | 240 | 600 | 32 | 55 | 140 | 140 | 50 | 18/22 | 0.12s/20ka | 2.8 | 21.5 |
note: 1. the product model is in accordance with gb/t 7253-2005 and jb/t 9683-2012 (iec60305:1995, mod). the 420kn strength grade product contains 400kn strength grade, and the 550kn strength grade product contains 530kn strength grade. 2. the connection structure is in accordance with gb/t 4056-2008 (iec60120: 1984, mod) and bs 3288 part3. according to the customer's request, the locking pin can be w-pin or r-pin. unless otherwise specified, u70~u120 adopts w pin, and other uses r pin. |
nooa electric co., ltd. is located in luxi county electric porcelain industrial park, pingxiang, jiangxi, covering an area of 70,000 square meters, and construction area is 50,000 square meters since its establishment in december, 2002.there are more than 200 employees, including 25 technicians.
nooa electric co., ltd. has been specialized in research and development of latest high-strength functional glass and power transmission insulators, which is the qualified supplier for state grid corporation of china and southern state grid corporation of china, and is a participating unit of product standard formulation of the national insulator standard committee. the main products type are : standard-type insulator, antipollution-type insulator, aerodynamic type insulator, multi-umbrella type insulator, ground-wires type insulator, post insulator for line, pin insulator. products are mainly used for transmission line insulation, suspension, support, tension conductors. our products are divided into 5 major series: the standard type 40-550kn、filth-resistant type 70-420kn、aerodynamic type 120-300kn、multi-umbrella type 120-300kn、and ground circuit type,able to be used for line voltage from 10kv~1000kv.
nooa is a national demonstration enterprise for the transfer and transformation of major scientific and technological special achievements, having established "industry-university-research" cooperative relationship with nanchang university and nanchang hangkong university, implementing 03 and 05 special projects with nanchang hangkong university to create an intelligent manufacturing line for uhv glass insulators.
we have always adhered to the business philosophy of "serving society and contributing to the country", and adhered to the development strategy of "relying on mechanism innovation to introduce high-quality talents and relying on high-quality talents to develop new products", attracting many industry technical experts from hunan, jiangxi, xi'an and other places to built an excellent technology research and development team, and participate in the company's product innovation and product standard formulation. nooa company has successively established jiangxi provincial uhv glass insulator engineering research center and jiangxi provincial high-strength amorphous insulating material technology center.
what's more important is we pay special attention to new product research and development and independent innovation, and has long adhered to the integration of production, education and research. it has many years of good cooperative relations with hunan university,nanchang university, nanchang hangkong university and other colleges and universities, and on the basis of independent innovation, it also has a good cooperative relationship with domestic well-known industry colleagues in the field of technology.