11kv Disc Suspension Porcelain Insulators
11kv Disc Suspension Porcelain Insulators
11kv Disc Suspension Porcelain Insulators

11kv Disc Suspension Porcelain Insulators

11kV disc suspension porcelain insulators are components used in electrical distribution systems, typically in overhead lines. They suspend conductors from poles or towers, providing both mechanical support and electrical insulation. Their design is suited for 11kV systems, commonly found in rural or urban distribution networks.
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11kV Disc Suspension Porcelain Insulators

11kV disc suspension porcelain insulators are essential components in power distribution networks, designed to support and electrically isolate conductors from transmission towers. Made from high-quality porcelain, these insulators offer excellent dielectric strength, mechanical durability, and resistance to environmental factors. Their disc shape enhances performance in polluted environments by increasing the creepage distance, which helps prevent flashovers.

basic type Net weight,approximate-kg Coupling size Diameter(D)-mm Spacing(H)-mm
 Leakage distance-mm Combined M&E strength -kn Impact strength -N.m Routine proof test load -kn power frequency dry withstand voltage-kv power frequency wet withstand voltage-kv Dry lightning impulse withstand voltage-kv Power frequency puncture voltage-kv Test voltage RMS to ground-kv Maximum RIV at 1000kHz-μv

U40B

2.8 16 190 140 200 40 5 20 55 30 75 90 7.5 50
U40C 2.9 16C 190 140 200 40 5 20 55 30 75 90 7.5 50
U70BL 4.7 16 255 146 320 70 6 35 70 40 100 110 10 50
U70C 4.8
 16C 255 146 320 70 6 35 70 40 100 110 10 50
U80BL 5 16 255 146 320 80 7 40 70 40 100 110 10 50
U100BL 5.3 16 255 146 320 100 7 50 70 40 100 110 10 50

Key Features

Material and Design: Porcelain is selected for its robustness and ability to withstand harsh conditions. The disc design allows for effective self-cleaning by rain, making it ideal for areas with varying pollution levels.
Voltage Handling: Each disc is typically rated to handle around 11kV, so a single disc is often sufficient for 11kV lines. In areas with higher pollution or for added reliability, a string of two or more discs may be used to increase the total creepage distance and provide a safety margin.
Applications: These insulators are commonly used in 11kV distribution lines, particularly in regions where mechanical strength and resistance to vandalism are priorities. They are also favored in areas with heavy ice or wind loads due to their robust construction.

Why Use 11kV Disc Suspension Porcelain Insulators?

Porcelain disc suspension insulators are a reliable choice for 11kV systems due to their durability and electrical properties. They excel in challenging environments, such as areas with pollution, ice, or high winds, ensuring the stability and safety of power distribution networks.
In summary, 11kV disc suspension porcelain insulators are versatile and dependable, making them a preferred option for supporting and insulating conductors in 11kV distribution lines, tailored to specific environmental and operational needs.

Construction and Design:

Material: High-grade porcelain, chosen for its excellent dielectric strength, mechanical durability, and resistance to environmental factors (UV, temperature fluctuations, pollution).
Shape: Disc-shaped with ribbed surfaces to increase creepage distance, reducing the risk of flashover under wet or contaminated conditions.
Connections: Metal fittings (e.g., ball and socket or clevis and tongue) at each end allow multiple discs to form a string or connect to towers/conductors.

Electrical and Mechanical Properties:

Voltage Rating: Each disc typically withstands 10–15kV, but systems use 1–2 discs for 11kV lines to ensure safety margins, especially in polluted or humid environments.
Mechanical Strength: Rated for loads like 70kN (≈7 tons), sufficient to support distribution conductors against weight, wind, and ice.
Creepage Distance: Extended surface paths (e.g., 300–400mm) prevent current leakage across the insulator.

Standards and Testing:

Compliance with IEC 60383 or ANSI C29 standards, ensuring performance through tests such as:
Electrical: Power frequency withstand, lightning impulse tests.
Mechanical: Tensile load tests to verify strength under stress.
Environmental: Thermal shock and pollution resistance checks.

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Company profile

Who We Are?

Nooa Electric Co., Ltd. - Chinese professional electrical insulators manufacturer with 21+ experience, covering an area of 70,000 square meters, and construction area is 50,000 square meters. There are more than 200 employees, including 25 technicians. The production capacity 3500000 pieces per year, and now setting up the new kiln and lines up to 10500000 pieces per year. We have 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 electrical insulator standard committee.


What We Have?

Certificates & Reports: INTERTK, SGS, BV Certificates,Type Test Certificate.

Main Electric Insulators : Standard-type glass insulator (u40(ctv175)/u70(ctv254, ps70e)/u120/u160/u210/u300) , antipollution-type glass insulators (u120bp/u160bsp/u210bp), aerodynamic type glass electrical insulators (ug70bsa/u100bsa/u120bla), multi-umbrella type electric insulators, ground-wires type glass power line insulators (u70cn/u100cn/u120c), post insulator for line, pin glass insulator. Products are mainly used for transmission line insulation, suspension, support, tension conductors. They are divided into 5 major series: The standard type glass insulator 40-550kn, filth-resistant type glass insulators 70-420kn, aerodynamic type glass electrical insulators 120-300kn, multi-umbrella type electric insulators 120-300kn, and ground circuit type high voltage insulators, able to be used for line voltage from 10kv～1000kv.


Core Technology:

Automation Equipment: Siemens fully automatic feeding, stamping, temperature equalization, tempering, hot and cold shock control system.
Independent Product Model: U160BP/146/380/450, U160BP/155/380/450, U210BP/170/420/550 and U300BP/195/420/550.
Advanced Klin: Germany's new generation kiln control system, equipped with brand-new sensors and actuators, and equipped with a high-precision automatic batching system.
Qualification: Passed the quality, environment and occupational health system certification and obtained a number of invention patents.


Goal:

To be the world's largest glass insulators manufacturer.

Electric Insulators Certificates

Are u the electric insulators factory or trading company?
China Leading Electric Insulators Factory founded in 2002
What're your main power insulators?
Powerline Electric Insulators (glass insulators, porcelain insulators, composite insulators ), the fittings and hardwares of all kinds for high-voltage applications and related products.
Can I get some glass insulators samples?
Yes, powerline glass insulator sample order is available for quality check and market test.
What's your payment terms?
We usually accept all kinds of payment terms, T/T, L/C, Western Union.
How can you control your glass power line insulator quality?
For each glass insulator production processing, we have a complete QC system for the chemical composition, physical and electrical properties. After production, all glass power line insulators will be tested according to related standards, and the ex-factory test reports will be sent along with shipment documents.
Does your company accept customization?
We accept OEM service.
What's your warranty terms?
We offer 24 months warranty terms.
Do you have glass electrical insulators in stock?
Depends on your request, we have standard models (CTV254 & CTV175, U40B U70B U120B U160BL U240B U300B ) in stock. Some special product and big order will be newly produced according to your order.

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Contact Us

Room 2221, 22nd Floor, Building 1, Wanxiang Times Garden, No. 676, Renmin East Road, Furong District, Changsha City, Hunan Province, China
Phone : 0086 186-848-89358
Whatsapp : +8615274981317  
Email : info@nooaelectric.com
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