High voltage suspension 40 kn electrical porcelain insulator U40B porcelain insulators
It mainly plays the role of electrical insulation and mechanical support, isolating wires or equipment from the supporting structure, preventing accidental flow of current in the equipment or circuit, while bearing the weight of the circuit or equipment, and maintaining the stability of wires or equipment under external forces such as wind, impact, or vibration.
Main types of porcelain insulator:
Suspension insulator: mainly used for insulation and mechanical fixation of high-voltage overhead transmission lines and soft busbars in power generation and substations. It can be further divided into disc-shaped suspension insulators and rod-shaped suspension insulators, among which disc-shaped suspension insulators are the most widely used in transmission lines.
Post insulator: It is commonly used for insulation and mechanical fixation of busbars and electrical equipment in power plants and substations, and is also commonly used as a component of electrical equipment such as isolating switches and circuit breakers. It can be divided into needle post insulators and rod post insulators. Needle post insulators are generally used in low-voltage distribution lines and communication lines, while rod post insulators are mostly used in high-voltage substations.
Related products for porcelain insulator:
Main technical parameters (GB and IEC) of standard disk suspension type porcelain insulator | ||||||||||
IEC type | Diameter D (mm) | spacing H (mm) | creepage distance L(mm) | size of coupling (mm) | Mechnical failing load (kN) | Mechnical routine test (kN) | Power frequency withstand voltage DRY (kV) | Power frequency withstand voltage WET (kV) | lighting impulse withstand voltage (kV) | Min power frequency puncture voltage (kV) |
U40B | 190 | 140 | 200 | 16 | 40 | 20 | 55 | 30 | 75 | 90 |
U70B/146 | 255 | 146 | 320 | 16 | 70 | 35 | 70 | 40 | 100 | 110 |
U100B/146 | 255 | 146 | 320 | 16 | 100 | 50 | 70 | 40 | 100 | 110 |
U120B/146 | 255 | 146 | 320 | 16 | 120 | 60 | 70 | 40 | 100 | 110 |
U160B/155 | 255 | 155 | 305 | 20 | 160 | 80 | 70 | 40 | 100 | 110 |
U210B/170 | 280 | 170 | 335 | 20 | 210 | 105 | 70 | 40 | 100 | 110 |
U240B/170 | 300 | 170 | 400 | 24 | 240 | 120 | 75 | 45 | 100 | 120 |
U300B/195 | 320 | 195 | 390 | 24 | 300 | 150 | 75 | 45 | 100 | 130 |
U400B/215 | 340 | 205 | 550 | 28 | 400 | 200 | 90 | 50 | 135 | 130 |
U530B/240 | 380 | 240 | 600 | 32 | 530 | 265 | 95 | 55 | 145 | 140 |
Product name: Porcelain insulator | Model number:U40B/140 |
Material:porcelain | Application: high voltage |
Rated voltage: 33kV | Product name: high voltage insulator |
Brand name: Huayao | Usage:Transmission lines |
Application: insulation | Rated voltage: 12kV |
Place of origin: Jiangxi, China | Certificate:ISO9001 |
Standard: IEC60383 | Color: brown/white |
Product Details
40kN standard disc suspension porcelain insulator U40B Place of Origin: China Brand name: HUAYAO Certification: ISO9001 Daily output: 10000 piece Payment & Shipping Minimum Order Quantity: 10 pieces Packaging Details: normal export packaging Supply Ability: 50000pcs Delivery Port: Ningbo,Shanghai Payment term: TT, L/C, FCA |
![]() |
Quick Detail:
Standard Profile Suspension Insulators U40B Dimensions Diameter (D): 190mm Spacing (H): 140mm Creepage Distance: 200mm Coupling Size: 16mm Mechanical Values Mechanical Failing Load: 40kN Tension Proof: 20kN Electrical Values Dry Power-frequency Withstand Voltage:55kV Wet Power-frequency Withstand Voltage: 30kV Dry Lightning Impulse Withstand Voltage: 75kV Puncture Withstand Voltage: 90kV Radio Influence Voltage Data Test Voltage RMS to Ground: 7.5kV Maximum RIV at 1000 kHz: 50μV |
![]() |
The Production process flow:
The production process of porcelain insulators in Jiangxi Huayao Electric Co.,Ltd is as follows:
Mix raw material=>make blank shape=>Drying=> Glazing=>put into kiln=> Glue assembly=> routine test and other test=> Finished products package
Workshop of Jiangxi Huayao Electric Co.,Ltd:

Customer visit: