China Strain Long Rod Porcelain Insulator
China Strain Long Rod Porcelain Insulator

China Strain Long Rod Porcelain Insulator

long rod insulators are used in high voltage transmission lines and have been the popular choice across europe since 1960. studies reveal that porcelain long rod insulators have superior electrical and mechanical properties, power arc and interference voltage behavior compared to the traditional cap & pin type disc insulators.
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porcelain long rod insulators are of solidcore type “a” construction and are absolutely puncture proof. these insulators are designed to provide a flexible support at the same time ensuring that the tensile load requirements in service are met. the long rod insulators are subjected to static and dynamic loads including wind load, ice load, conductor galloping, short circuit forces etc. and are designed to withstand such loads constantly and continuously for decades.

the insulators are made of high quality aluminous porcelain meeting the requirements of c130 in accordance with the iec: 60672. apart from the visual and dimensional checks, the long rod insulator shells are subjected to ultrasonic tests prior to assembly. precision machines are used to cut and grind the end faces to achieve the required surface finish and chamfer of the ends.

the metal caps of spheroidal graphite iron are manufactured in-house eliminating the dependency on external suppliers and thereby ensure further consistency in quality and delivery. they are galvanized using zinc of 99.95 % purity with a minimum average coating thickness not less than 85 microns (610 g/m2).

the inner portion of the caps are coated with a uniform layer of bituminous paint to offset the effect of differential thermal expansion between cement and metal parts. the insulators are assembled using high quality portland cement in specialized carousels that ensure the stringent dimensional requirements are met. they are subjected to curing under controlled conditions.

voltage rating from 33kv up to 1200 kv
mechanical rating from 45kn to 420kn
lengths up to 1700mm in single part and up to 7500mm as strings
specific creepage distance from 12mm/kv to 35mm/kv
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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