Disc Insulator
  • Disc InsulatorDisc Insulator
  • Disc InsulatorDisc Insulator
  • Disc InsulatorDisc Insulator

Disc Insulator

SARAH Electric, as a reliable supplier, our high-quality Disc Insulator is the core insulation and load-bearing component of high-voltage power transmission lines. It is commonly used in 10kV - 500kV and above overhead power transmission lines, substations, and other scenarios, playing a crucial role in insulating conductors, fixing cables, and bearing mechanical loads. We have always provided product installation guidance, technical consultation, and warranty services. The product warranty period is 2 years, and lifetime maintenance is available.

The SARAH Electric brand Disc Insulator is divided into two major series: porcelain disc insulators and glass suspension insulators. It strictly follows the international standards of ANSI and IEC, and combines excellent electrical insulation performance, mechanical strength and weather resistance, providing stable and reliable insulation solutions for global power engineering.

Disc InsulatorDisc Insulator


Core Products

Porcelain Disc Insulator

The porcelain disc-type insulator is mainly composed of high-strength electrical ceramics, combined with galvanized steel caps and steel feet. It is a classic choice for traditional high-voltage power transmission scenarios and is suitable for various complex outdoor environments.


Product advantages

Stable insulation performance: The porcelain body is formed through high-temperature firing, with high insulation strength. It has excellent resistance to electric arcs and electric corona, and there will be no insulation aging problem during long-term operation.


Mechanical strength fully guaranteed: The steel caps and steel feet are processed using hot-dip galvanizing technology, which offers excellent corrosion resistance and tensile strength, meeting the long-term load-bearing requirements of the lines. The rated mechanical failure load covers 10,000lb to 25,000lb.


Weather resistance is top-notch: It can withstand extreme temperature differences ranging from -40℃ to +85℃, high altitudes, strong ultraviolet rays, coastal salt fog and other harsh environments, and has a service life of over 30 years.


Core technical parameters (ANSI standard series)

Porcelain Disc Insulator

ANSI
Class
Fig
No.
Main
Dimension
(mm)
Creepage
Distance
(mm)
Combined 
M&E
Strength
lb
(mm)
Mechanical
Impact
Strength
(N-m)
Long-Time
Load
Test Value
lb
(KN)
Average Flashover
Voltage(kV)
Power
Frequency
Puncture
Voltage
(kV)
Radio Influence Voltage
Power
Frequency
Critical
Impulse
Test Voltage
To Ground
(kV)
MaX.RIV
1MHz(μ V)
(Max) H Dry Wet Positive Negative
52-1 1 61/2
(165)
51/2
(141)
7
(178)
10000
(44)
45
(5.0)
6000
(27)
60 30 100 100 80 7.5 50
52-2 2 8
(203)
53/4
(146)
81/4
(210)
15000
(67)
50
(5.5)
10000
(44)
65 35 115 115 90 7.5 50
52-3 4 103/4
(273)
53/4
(146)
111/2
(292)
15000
(67)
55
(6.0)
10000
(44)
80 50 125 130 110 10 50
52-4 3 103/4
(273)
53/4
(146)
111/2
(292)
15000
(67)
55
(6.0)
10000
(44)
80 50 125 130 110 10 50
52-5 4 103/4
(273)
53/4
(146)
11
(279)
25000
(111)
60
(7.0)
15000
(67)
80 50 125 130 110 10 50


Glass Suspension Insulator

Type LXP-70 LXP-100 LXP-120 LXP-160
lec Standard Insulator U70B/146 U100B/146 U120B/146 U160B/170
Minimum Mechanical Failing Load 70kN 100kN 120KN 160kN
High Spacing 146mm 146mm 146mm 170mm
Diameter 255mm 255mm 255mm 280mm
Leakage Distance 320mm 320mm 320mm 400mm
Ball And Socket Soupling 16 16 16 20
Stainless Steel Security Clip W W W W
Five Pieces Power Frequency Withstand Voltage For Unit 150kV/40KV 150kV/40kV 150kV/40kV 180kV/50kV
Five Pieces Lightning Impulse Withstand Voltage For Unit 420kV/100kV 420KV/100KV 420kV/100kV 450kV/110KV
Power Frequency Puncture Voltage 130kV 130kV 130kV 130kV
Radio Influence Voltage 50μV 50μV 50μV 50μV
Electric Iron Visual Test 18kV/22kV 18kV/22kV 18kV/22kV 18kV/22kV
Impulse Puncture Voltage 2.8p.u 2.8p.u 2.8p.u 2.8p.u
Power Frequency Electric Arc Voltage 0.12s/20kA 0.12s/20kA 0.12s/20kA 0.12s/20kA
Net Weight Per Unit 3.6kg 4.0kg 4.2kg 6.5kg


Lass Suspension Insulator

Product advantages

The internal stress of tempered glass is uniform. If there is insulation deterioration, it will automatically shatter, eliminating the need for manual inspection. This results in an 80% increase in operational efficiency.

The glass dielectric constant is stable, and it has outstanding anti-flashover and anti-wet flash performance, making it suitable for areas with high pollution and high humidity.

At the same voltage level, it is lighter in weight, easier to install, and reduces construction costs.


Core Product Advantages

1. The Disc Insulator is compatible with a full range of voltage levels including 10kV, 35kV, 110kV, 220kV, and 500kV.

SARAH can customize special specifications and hardware structures according to the customer's line parameters and installation requirements.


2. The porcelain body is made of high-purity kaolin and feldspar, the glass is of ultra-clear high-alumina tempered glass, and the hardware is of Q235/Q345 high-quality steel.

The Disc Insulator strictly complies with international standards such as ANSI C29.2 and IEC 60305. It can provide a third-party testing report.


3. Easy installation and operation maintenance

The Disc Insulator is compatible with internationally standardized hardware. Installation does not require special tools, resulting in high construction efficiency.

No need for regular pole inspections, significantly reducing operation and maintenance costs, suitable for long-distance power transmission lines

Porcelain model maintenance-free: Long-term operation without aging, one installation for lifetime benefits


Company Strength and Delivery Assurance

Enterprise strength

SARAH is a professional enterprise specializing in the research, production and export of power insulators. With over 10 years of industry experience, the factory is equipped with an automated ceramic firing line, a tempering glass production line, and a full-performance testing laboratory. The products are exported to 30+ countries and regions around the world, serving global power engineering contractors, power grid companies, and engineering contractors.


We have over 20 engineers specializing in power insulation. We can customize products and optimize solutions according to customer needs.

Having passed the ISO9001 quality management system and ISO14001 environmental management system certifications, the products have obtained international certifications such as CE and UL.

SARAH has established long-term cooperation with high-quality domestic raw material suppliers. Please rest assured, our raw materials are provided in a stable manner.


Delivery and Service Assurance

Standard models (such as 52-2, LXP-70, LXP-100, etc.) are always in stock and can be dispatched within 72 hours.

The production cycle for special specification products is 15 to 30 days. We can also accelerate the production according to your schedule.


We have long been cooperating with international logistics companies such as COSCO and DHL, offering various logistics ways including full container, partial container and air transportation. We also provide full tracking of logistics information throughout the process.

Sarah Electric DeliverySarah Electric Delivery

Hot Tags: Disc Insulator Manufacturer, High Voltage Disc Insulator, Porcelain Disc Insulator
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Contact Info
  • Address

    No.101-103, Fu Hua Road, Leshang Chuangye Yuan, Wengyang Industrial Zone, Yueqing, Wenzhou, Zhejiang, China

For inquiries about electrical transformer, surge arrester, fuse cutout or price list, please leave your email to us and we will be in touch within 24 hours.
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