Low Voltage Porcelain Power Line Post Insulator 57 - 2 33KV

Brand Name:Suntech
Certification:ISO
Model Number:Power Line Post Insulator
Minimum Order Quantity:1 PCS
Delivery Time:20-25 days after deposit
Payment Terms:L/C, T/T, Western Union
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Verified Supplier
Location: Ningbo Zhejiang China
Address: NO.61 Xiachen'an Road,Xiwu Street,Fenghua District,Ningbo,China.315505
Supplier`s last login times: within 26 hours
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Product Details

Transmission Line Electrical 57-2 Power Line Post Insulator


Porcelain insulators typically contain high concentrations of some minerals such as alumina or clay. The combination of porcelain with other minerals allows electricity to pass through without reacting with nearby electrical conductors. This not only ensures greater safety, but also allows electricity to pass through without losing any of its power charge. Since porcelain does not conduct electricity, especially when combined with other non-conductive materials, it is the ideal material for insulators.


Porcelain insulators have a wide field of application: contactors, disconnectors, transformers equipment, capacitors, grommets also with end surface, atypical insulators (filters). Characteristics of high plasticity during production, precision grinding possibilities, as well as carburizing and bonding with excellent mechanical properties allow a wide range of shapes to be created and used for any type of application.


  • Railways: Thousands of insulators placed on high-speed and conventional lines around the world.
  • Substations and Distribution: Support insulators with high mechanical loads and voltages up to 500kV (BIL 95 up to 1675kV)
  • Wall bushings up to 72kV and 3150A.
  • Transformers: Porcelain bushings and insulators

ANSI Class
57-1
57-2
57-3
57-4
57-5
Creepage distance,mm
356
559
737
1015
1145
Dry arching distance
165
241
311
368
438
Cantilever Strength,Kn
12.5
12.5
12.5
12.5
12.5
Lower Frequency
Flashover Voltage
Dry,kv
80
110
125
150
175
Wet,kv
60
85
100
125
150
Critical Impulse
Flashover Voltage
Pos.,kv
130
180
210
255
290
Neg.,kv
155
205
260
340
380
RIV Data
Test volt. To ground,kv
15
22
30
44
44
Max RIV at 1000 KHz,Uv
100
100
200
200
200


About us: Suntech Power Tools, which located in the southeast China, it is the earliest origin Power Tools Leading City in China.We are making the various related cable pulling tools, and hydraulic tension and puller to support the transmission work.All canaccept OEM and professionally produced per ISO 9001:2008, they are being sold to over more than 50 countries in the world,and has wined the best brand reputations. Some items like the stringing blocks,cable rollers,the cable jack stands,etc we can customized, and the Construction Safety Tools ,are not demanded the MOQ. You can freely help you out either

China Low Voltage Porcelain Power Line Post Insulator 57 - 2 33KV supplier

Low Voltage Porcelain Power Line Post Insulator 57 - 2 33KV

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