400 kV Double Tension Fitting for Glass Insulators
400 kV Double Tension Fitting for Glass Insulators
400 kV Double Tension Fitting for Glass Insulators
400 kV Double Tension Fitting for Glass Insulators
400 kV Double Tension Fitting for Glass Insulators

400 kV Double Tension Fitting for Glass Insulators

400 kV Double Tension Fitting for glass insulators is a crucial component in high-voltage transmission lines, designed to securely hold and connect insulator strings in tension applications. These fittings are typically used in suspension and strain insulator assemblies to maintain mechanical stability and electrical insulation in overhead power lines.
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Key Components and Functionality:

Voltage Rating (400 kV):
Designed for extra-high-voltage (EHV) transmission lines, where electrical insulation and corona resistance are critical. The fitting must minimize sharp edges to prevent ionization and arcing.

Double Tension Design:
Mechanical Load Handling: Typically used at dead-end towers, angle towers, or locations with significant directional changes (e.g., river crossings). It accommodates high mechanical tension from conductors, often in two directions (longitudinal and transverse).
Redundancy/Strength: May involve dual insulator strings or parallel arms to distribute mechanical load, enhancing reliability and capacity. This design is crucial for extreme conditions like heavy ice/wind or long spans.

Glass Insulators:
Material Advantages: Glass insulators offer high durability, resistance to leakage currents, and easy visual inspection (cracks or defects are more apparent).
Fitting Compatibility: The fixture ensures secure attachment via ball-and-socket or tongue-and-clevis connections, avoiding stress concentrations that could crack brittle glass.

Applications:
Critical Infrastructure: Used in strain towers, river crossings, mountainous terrain, or regions with high environmental loads.
Retrofits/Regional Preferences: Some utilities prefer glass for its longevity or performance in specific climates, despite the prevalence of composite insulators elsewhere.

400 kV Double Tension Fitting equipments

400 kV Double Tension Fitting types
400 kV Double Tension Fitting specifiction

400 kV Double Tension Fitting

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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Any powerline insulators needs or inquiries, pls leave a message to us. More details, Faster response!

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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