High Voltage Glass Insulators with IEC Standards
High Voltage Glass Insulators with IEC Standards
High Voltage Glass Insulators with IEC Standards
High Voltage Glass Insulators with IEC Standards
High Voltage Glass Insulators with IEC Standards

High Voltage Glass Insulators with IEC Standards

IEC-compliant high voltage glass insulators designed for durability, safety, and global transmission applications. High Voltage Glass Insulators are widely used in overhead transmission lines to support conductors while preventing electrical leakage. Designed in accordance with IEC standards (such as IEC 60383 and IEC 61109), these insulators guarantee consistent quality and performance across international markets. Nooa Electric-as a top glass manufacturer in China, provides premium glass insulator solutions tailored for global power infrastructure projects.

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Key Features and Advantages

High strength, self-cleaning, easy inspection, and long service life.


  • IEC Standard Compliance: Meets IEC 60383 requirements for electrical and mechanical performance
  • High Mechanical Strength: Available in ratings such as 70kN, 120kN, 160kN, and above
  • Self-Cleaning Surface: Smooth toughened glass minimizes contamination buildup
  • Easy Fault Detection: Shattered glass indicates failure immediately
  • Corrosion Resistance: Galvanized steel fittings ensure durability in harsh environments
  • Low Maintenance Cost: Reduced inspection and cleaning requirements


Nooa Electric ensures every unit delivers stable performance after FAT. Even under extreme environmental conditions.

Technical Specifications

Typical parameters include:

  • Standard: IEC 60383 / IEC 62217
  • Material: Toughened glass + galvanized steel fittings
  • Mechanical Strength: 70kN – 300kN
  • Application Voltage: 33kV to UHV transmission systems

Tension insulators U120

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
u120bp 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

CTV254

(PS70E)

1-3
 70
 255
 127
 320
 16
 40
 100
 130
 130
 18/22
 0.12s/20ka
 2.8
 3.5
CTV175
 1-3
 40
 178 110 190 11 25 50 90 50 18/22 0.12s/s20ka 2.8 2.1

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 part

3. 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.

4. black marks are hot sellers-your best Glass insulators choice for overhead power lines


Engineered for Grid Reliability

Designed for stable performance under electrical, mechanical, and environmental stress.


Transmission networks require insulators that can handle dynamic loads, pollution, and voltage fluctuations without degradation. These high voltage glass insulators are specifically engineered to:

  • Maintain insulation integrity under wet and polluted conditions
  • Resist thermal cycling and UV exposure
  • Perform reliably in long-span and high-tension

Unlike conventional materials, toughened glass provides consistent dielectric properties over time, making it a dependable choice for critical grid infrastructure.

IEC Compliance – What It Really Means

IEC standards ensure global compatibility, safety, and verified performance.


Compliance with IEC standards is not just a checkbox—it directly impacts project acceptance and safety:

  • IEC 60383: Mechanical and electrical characteristics for overhead line insulators
  • Routine & Type Testing: Ensures every batch meets international utility requirements


For EPC contractors and international tenders, IEC compliance from Nooa Electric ensures smooth qualification and approval processes.

Performance Under Real-World Conditions

Designed to perform in pollution, coastal, desert, and high-altitude environments.


These insulators are optimized for challenging environments:

  • Coastal Areas: Salt contamination resistance
  • Industrial Zones: Chemical and dust pollution tolerance
  • Desert Regions: High temperature and sand exposure resistance
  • High Altitude: Stable insulation under reduced air density


The smooth glass profile naturally reduces contamination buildup, lowering the need for manual cleaning.

Design Flexibility for Transmission Projects

Modular design allows easy adaptation to different voltage levels.


Suspension glass insulators are inherently modular:

  • Add or reduce units to match voltage requirements
  • Compatible with standard ball & socket fittings
  • Easy integration into existing transmission systems


This flexibility reduces engineering complexity and supports fast deployment in new or upgrade projects.

Why Choose Nooa Electric

Because Nooa Electric is a reliable partner delivering IEC-compliant, export-ready insulator solutions.

  • Focused on B2B power transmission markets
  • Strict quality traceability and batch control
  • Experience with international tenders and EPC projects
  • Fast response for custom technical requirements

Nooa Electric is committed to helping clients reduce risk and improve project reliability.

FAQ

Q1: Are glass insulators suitable for heavily polluted environments?
A: Yes. Their smooth, non-porous surface reduces contamination adhesion, making them effective in most polluted areas.


Q2: Can these insulators be used for UHV projects?

A: Yes, by configuring longer strings and higher mechanical ratings.


Q5: Does Nooa Electric support project-based customization?
A: Absolutely. Mechanical strength, creepage distance, and dimensions can be tailored to project specifications.

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 toughened glass insulators factory or trading company?
China Leading Toughened Glass Insulators Factory With IEC & ISO Certificates. Founded in 2002.
What're your main power insulators?
Powerline Electrical Insulators (40kn-550kn disc glass insulators, porcelain insulators, composite insulators ), the fittings and hardwares of all kinds for high-voltage applications and related products are available.
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 IEC 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 and ship within 1 month. 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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