• Product
  • Suppliers
  • Manufacturers
  • Solutions
  • Free tools
  • Knowledges
  • Experts
  • Communities
Search


MENU

40.5kV-1000kV Silicone rubber high-voltage hollow composite insulator

Zhejiang Wone IT Service Co., Ltd...
1yrs + staff 1000+m² US$300000000+ China
  • 40.5kV-1000kV Silicone rubber high-voltage hollow composite insulator

Key attributes

Brand Switchgear parts
Model NO. 40.5kV-1000kV Silicone rubber high-voltage hollow composite insulator
Rated voltage 40.5kV
额定弯曲负荷 5kN
Series HCI

Product descriptions from the supplier

Description

Hollow composite insulator is an important component of high-voltage electrical products composed of epoxy glass fiber wrapped tube, silicone rubber umbrella cover (HTV), and aluminum alloy flange accessories. Hollow composite insulators are mainly used in electrical equipment such as circuit breakers, load switches, isolating switches, grounding switches, transformers, bushings, cable terminations, and lightning arresters.
Product advantages
Excellent explosion-proof performance, even in the event of internal overpressure or other external damage, there is no risk of fatal explosion. In earthquake prone areas, the safety performance is extremely high, the weight is light, reducing the risk of damage during transportation and installation, and also reducing the cost and difficulty of transportation and installation. Extremely high insulation level, no need for additional surface coating in humid environments, still has extremely high electrical performance in AC and DC applications. Due to the hydrophobicity and transferability of silicone rubber, the surface does not require cleaning. Excellent UV resistance and aging resistance. The delivery time is significantly shorter than that of porcelain insulators. The materials are recognized as excellent environmental protection and harmless to health and safety.

Performance of epoxy resin glass fiber wrapped pipe

Property Unit Value
Density g/cm³ ≥ 1.9
Bending Strength MPa ≥ 120
Elastic Modulus GPa ≥ 20
Glass Transition Temperature (TG) °C 130℃ - 140℃
Dielectric Loss - 3.1 × 10⁻²
Dielectric Constant - 4.0
Volume Resistivity Ω·m 2.6 × 10¹²
100h Water Diffusion Test - Pass
Dielectric Strength kV/mm 12

Performance of Organic Composite Umbrella Skirt Cover Material

Property Unit Value
Solidity (Shore A) - 65-70
Tear Strength kN/m ≥ 12
Tensile Strength MPa ≥ 4.5
Elongation at Break % ≥ 200
Volume Resistivity Ω·m 7×10¹⁴
Dielectric Constant - 3 ~ 4
Dielectric Strength kV/mm ≥ 20
Tracking and Erosion Resistance - TMA4.5
Flame Retardance - FV-0

The performance requirements and quality control of the end metal flange accessories are made of high-quality aluminum alloy through metal mold pressure casting, T6 state treatment, no pinholes, good air tightness, and higher mechanical strength; The surface has undergone shot blasting treatment, providing better corrosion resistance.

Product Specifications

Type Rated Voltage Ur (kV) Creepage Distance (mm) Dry Arc Distance (mm) 1min Power Frequency Withstand Voltage (kV) Lightning Impulse Withstand Voltage (kV) Inner Diameter ID (mm) Mounting Hole Distance D (mm) Structural Height H±2 (mm) Bending Load (kN) Internal Pressure Test (MPa) n d
                  MM L SM L MS P SI P    
HCI-40.5/5 40.5 1040 355 95 200 130 218 525 5 12.5 0.8 3.2 8 11
HCI-40.5/4.8 40.5 1260 415 95 200 585 4.8 12
HCI-52/4.8 52 1400 475 95 250 645 4.8 12
HCI-52/4 52 1650 535 95 250 705 4 10
HCI-72.5/4 72.5 1820 595 155 325 765 4 10
HCI-72.5/3.2 72.5 2800 835 155 325 1005 3.2 8
HCI-40.5/7.5 40.5 1050 370 95 200 154 220 540 7.5 18.8 16 11
HCI-40.5/7 40.5 1270 430 95 200 600 7 17.5
HCI-52/7 52 1500 490 95 250 660 7 17.5
HCI-52/5.6 52 1700 550 95 250 720 5.6 14
HCI-72.5/5.6 72.5 1900 610 155 325 780 5.6 14
HCI-72.5/4.4 72.5 2300 730 155 325 900 4.4 11
HCI-100/5.6 100 2540 790 165 380 960 5.6 14
HCI-100/4.5 100 3200 970 205 450 1140 4.5 11.3
HCI-126/4.5 126 3200 970 205 450 1140 4.5 11.3
HCI-126/4 126 4000 1210 255 550 1380 4 10
HCI-145/4.5 145 3640 1090 230 450 1260 4 10
HCI-145/3.5 145 4500 1330 305 650 1500 3.5 8.8
HCI-170/3.5 170 4280 1270 305 650 1440 3.5 8.8
HCI-170/3 170 5300 1570 355 750 1740 3 7.5
HCI-126/6 126 4000 970 205 450 190 312 1360 6 15
HCI-100/6.4 100 2600 730 165 380 198 260 900 6.4 16
HCI-100/5 100 3100 850 205 450 1020 5 12.5
HCI-126/5 126 3310 910 205 450 1080 5 12.5
HCI-126/4.5 126 4100 1090 255 550 1260 4.5 6.8
HCI-145/4.8 145 3750 1088 205 450 1258 4.8 12
HCI-145/4.0 145 4640 1328 305 650 1498 4 10
Type Rated Voltage Ur (kV) Creepage Distance (mm) Dry Arc Distance (mm) 1min Power Frequency Withstand Voltage (kV) Lightning Impulse Withstand Voltage (kV) Inner Diameter ID (mm) Mounting Hole Distance D (mm) Structural Height H±2 (mm) Bending Load (kN) Internal Pressure Test (MPa) n d
                  MM L SM L MS P SI P    
HCI-170/4.0 170 4420 1268 305 650 198 260 1438 4 10 0.8 3.2 16 11
HCI-170/3.5 170 5306 1508 355 750   1678 3.5 8.8 10 14
HCI-100/9 100 2600 730 165 380 248 342 930 9 22.5
HCI-100/8 100 3110 850 205 450   1050 8 20
HCI-126/8 126 3300 910 205 450   1010 8 20
HCI-126/7 126 4100 1090 255 550   1290 7 17.5
HCI-145/7.4 145 4500 1210 255 550   1410 7.4 18.5
HCI-145/6.5 145 5000 1330 305 650   1500 6.5 16.3
HCI-170/6.5 170 5300 1390 305 650   1590 6.5 16.3
HCI-170/5.6 170 5700 1510 355 750   1710 5.6 14
HCI-252/4.6 252 7700 1990 435 950   2190 4.6 11.5
HCI-252/3.6 252 8600 2220 460 1050   2400 3.6 9
HCI-252/15 252 7650 1930 435 950 260 445 2190 15 37.5 16 17.5
HCI-252/12.5 252 8700 2190 460 1050   2450 12 30
HCI-300/12 300 9400 2380 505 1050   2640 12 30
HCI-300/10 300 10200 2580 505 1050   2840 10 25
HCI-252/15 252 7650 1930 435 950 280 445 2190 15 37.5
HCI-252/12.5 252 8700 2190 460 1050   2450 12 30
HCI-300/12 300 9400 2380 505 1050   2640 12 30
HCI-300/10 300 10200 2580 505 1050   2840 10 25
HCI-800/20 800 27900 6840 1050 2400 300 348-348 2680x3 20 50 4 28
HCI-252/12 252 8900 2260 460 1050   510 2500 12 30 16 18
HCI-252/6 252 9650 2400 460 1050   348-348 2800 6 15 4 28
HCI-252/5 252 8600 2290 460 1050 345 456-466 2542 5 10 20 13.5
HCI-170/5 170 5100 1497 305 650 358 432 1757 5 12.5 24 13.5
HCI-170/5 170 6400 1822 355 750 2080 5 12.5
HCI-252/12.5 252 7600 2147 435 950 2407 5 12.5
HCI-252/5 252 7900 2210 460 1050 2470 5 12.5
HCI-300/5 300 9400 2602 505 1050 2862 5 12.5
HCI-420/4 420 10800 2992 750 1550 3252 4 10
HCI-420/3 420 14280 3900 750 1550 4160 3 7.5
HCI-550/6 550 18800 4767 810 1800 375 460-586 5020 6 15 16 11.5-16
HCI-550/10 550 15800 4050 810 1800 486 590-730 4330 10 25
HCI-550/10 550 17000 4720 810 1800 486 5000 10 25
HCI-750/8 750 30600 7690 960 2400 486 885-1010 8000 8 20 24 24
HCI-550/12 550 18500 4477 810 1800 720 5037 12 30
HCI-750/20 750 31500 7540 960 2400 720 8100 20 50
HCI-1000/20 1000 45000 11000 1200 2760 720 11560 20 50
HCI-1000/20 1000 45500 10720 1200 2760 1000 1180-1200 11500 20 50 26-32 28
FAQ
Q: What scenarios and key technical parameters apply to 40.5-145kV hollow composite insulators?
A:

It is widely used in 40.5-145kV GIS/HGIS substations, high-voltage switchgear, power transmission lines, and railway electrification systems. Core parameters: Rated voltage 40.5/66/110/145kV, rated mechanical load ≥30kN, creepage distance 25-31mm/kV (customizable for heavy pollution), operating temperature -40℃~+80℃. For example, the 145kV model has a typical insulation distance of 1300mm and 1-minute power frequency withstand voltage of 4900V. It is ideal for high-altitude, coastal salt fog, and industrial heavy pollution areas.

Q: What are the core functions and structures of hollow composite insulators?
A:

 Its core function is to provide electrical insulation and mechanical support for high-voltage equipment (such as GIS, circuit breakers, and bushings) in 40.5-145kV power systems. The structure consists of three key parts: a glass fiber reinforced epoxy resin core tube (bearing mechanical load), a silicone rubber shed (providing creepage distance and environmental protection), and metal end fittings (ensuring firm connection). It features a hollow through design, which is compatible with internal gas insulation or conductor penetration scenarios.

Know your supplier
MV Switchgear Accessories
Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 1000m² Total staff: Highest Annual Export(usD): 300000000
Workplace: 1000m²
Total staff:
Highest Annual Export(usD): 300000000
Services
Business Type: Sales
Main Categories: Low Voltage Electrical Apparatus/Instrument meters/Production equipment/Tester/High Voltage Electrical Apparatus/Electrical fittings/Equipment Parts
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.
Negotiable
Pricing calculator
Model
Warranty by
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.

Related Products

More

Related Knowledges

More
  • Impact of DC Bias in Transformers at Renewable Energy Stations Near UHVDC Grounding Electrodes
    Impact of DC Bias in Transformers at Renewable Energy Stations Near UHVDC Grounding ElectrodesWhen the grounding electrode of an Ultra-High-Voltage Direct Current (UHVDC) transmission system is located close to a renewable energy power station, the return current flowing through the earth can cause a rise in ground potential around the electrode area. This ground potential rise leads to a shift in the neutral-point potential of nearby power transformers, inducing DC bias (or DC offset) in their
    Vziman
    01/15/2026
  • HECI GCB for Generators – Fast SF6 Circuit Breaker
    1.Definition and Function1.1 Role of the Generator Circuit BreakerThe Generator Circuit Breaker (GCB) is a controllable disconnect point located between the generator and the step-up transformer, serving as an interface between the generator and the power grid. Its primary functions include isolating generator-side faults and enabling operational control during generator synchronization and grid connection. The operating principle of a GCB is not significantly different from that of a standard c
    Garca
    01/06/2026
  • Distribution Equipment Transformer Testing, Inspection, and Maintenance
    1.Transformer Maintenance and Inspection Open the low-voltage (LV) circuit breaker of the transformer under maintenance, remove the control power fuse, and hang a “Do Not Close” warning sign on the switch handle. Open the high-voltage (HV) circuit breaker of the transformer under maintenance, close the grounding switch, fully discharge the transformer, lock the HV switchgear, and hang a “Do Not Close” warning sign on the switch handle. For dry-type transformer maintenance: first clean the porcel
    Oliver Watts
    12/25/2025
  • How to Test Insulation Resistance of Distribution Transformers
    In practical work, insulation resistance of distribution transformers is generally measured twice: the insulation resistance between thehigh-voltage (HV) windingand thelow-voltage (LV) winding plus the transformer tank, and the insulation resistance between theLV windingand theHV winding plus the transformer tank.If both measurements yield acceptable values, it indicates that the insulation among the HV winding, LV winding, and transformer tank is qualified. If either measurement fails, pairwise
    Oliver Watts
    12/25/2025
  • Design Principles for Pole-Mounted Distribution Transformers
    Design Principles for Pole-Mounted Distribution Transformers(1) Location and Layout PrinciplesPole-mounted transformer platforms should be located near the load center or close to critical loads, following the principle of “small capacity, multiple locations” to facilitate equipment replacement and maintenance. For residential power supply, three-phase transformers may be installed nearby based on current demand and future growth projections.(2) Capacity Selection for Three-Phase Pole-Mounted Tr
    Dyson
    12/25/2025
  • Transformer Noise Control Solutions for Different Installations
    1.Noise Mitigation for Ground-Level Independent Transformer RoomsMitigation Strategy:First, conduct a power-off inspection and maintenance of the transformer, including replacing aged insulating oil, checking and tightening all fasteners, and cleaning dust from the unit.Second, reinforce the transformer foundation or install vibration isolation devices—such as rubber pads or spring isolators—selected based on the severity of vibration.Finally, strengthen sound insulation at weak points of the ro
    Felix Spark
    12/25/2025
Haven't found the right supplier yet? Let matching verified suppliers find you. Get Quotation Now
Haven't found the right supplier yet? Let matching verified suppliers find you.
Get Quotation Now
Send inquiry
+86
Click to upload file

IEE Business will not sell or share your personal information.

Download
Get the IEE Business Application
Use the IEE-Business app to find equipment, obtain solutions, connect with experts, and participate in industry collaboration anytime, anywhere—fully supporting the development of your power projects and business.
Google Play App Store HUAWEI XIAOMI VIVO OPPO Palm Store
DownloadQr