Composite Line post Insulator , 252kV / 220kV Station Post Insulators

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Composite Line post Insulator , 252kV / 220kV Station Post Insulators
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Specifications:
Dimensions and Characteristics of 220kV(252kV)Line Post Insulator for Substation
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Description:
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1, 220kV(252kV)Line Post Insulator are widely used in power transmission lines and substations
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2, Dead end fittings are up to the requirements from the clients,the dimensions and coupling size can be exactly according to the specification requirements from the utilities.
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3, The silicon rubber color of the insulators are also up to the requirements from the clients and all the silicon rubber materials past 5000 hours aging test silicon content test and hydrophobicity test.
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4, ECR core rods are used in all the insulators, so we can guarantee a very good mechanical strength and anti-acid pollution performance for the insulators.
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5, All our insulators were type tested and design tested in accordance with IEC61952, maximum RIV is 100μV when tested at 1MHz and10% over nominal line ground voltage for indicated system voltage.
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6, All the Line Post Insulator with the voltage lower than 110kV are not supposed to use corona ring.
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? ? All the Line Post Insulator with the voltage equal to or higher than 110kV but lower than 220kV are supposed to use one corona ring at the line end.
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? ? All the Line Post Insulator with the voltage equal to or higher than 220kV are supposed to use two corona rings at both sides.
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Applications:
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1, All the 220kV(252kV) substations
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2, All the220kV(252kV) Electric Power Lines
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Competitive Advantage:

The advantages of polymer/composite insulators over ceramic/porcelain insulators
General comparison
Factor	Ceramic/porcelain insulators	Polymer/composite insulators
Weight	Heavy weight- For example 400kV - about 140kgs	90% lighter than them but with same mechanical strength 400kV -- Around 15kgs
Fragility	Highly fragility to shock and vibration	No fragility to shock and vibration
Packing and transportation	Risky and very costly	Easy and economical
Installation	Risky expensive and more labor required	Very easy and economical
Handling	Difficult	Easy
Maintenance cost	Very expensive	Low
Vandalism	More susceptible	Highly resistant
Breakages and secondary damage	Highly fragile- 10-15% breakages are reported during transportation storage and installation	Flexible and therefore highly resistant to breakages
Technical comparison
Mechanical failure	Reduction in mechanical strength and separation during to pings getting eroded	Just with single piece, so no such kind of problem
Resistance to flashover and punctures	Low	High
Anti tracking and erosion resistance	Very low- poor tracking resistance	Excellent tracking resistance avoids erosion or tracking of the housing material
Dielectric strength	Lower than polymer	Excellent insulation performance
Contamination and pollution	Highly effected	Not effected and has much longer life
Hydrophobicity	No hydrophobicity, ceramic surface forms water films on the surface making easy path leading to more flashover	Very excellent hydrophobicity
Self cleaning quality	No, dirty sand salt snow etc are easily attracted	Yes, due to hydrophobicity recovery characteristics
Tension strength	Good	Better during crimping technology
Maintenance	Needs maintenance like cleaning washing and greasing	Not required a Contact Us Jiangsu Xiangyuan Electric Equipment Co., Ltd. Contact nameMr. Warren Chat Now Phone86-755-26927358 AddressGroup 3, Zhennan Village, Chaiwan Town, Rugao City, Shaoxing, Zhejiang *Email Please enter Your valid email address. *To Mr. Warren *Message Your inquiry content must be between 20 to 5000 characters.   Please enter a correct verification code. 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