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.
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.
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