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ANSI 57-15 porcelain line post insulator,line post insulator China

As insulating and supporting conductor in HV transmission & distribution line, ANSI 57-15 porcelain line post insulator is common vertical line post insulator used with short studs or long studs.

This type line post insulator China has the characteristics of no puncture, high mechanical strength, excellent insulation and anti-pollution. This kind of insulator is safe and reliable in operation, simple in maintenance, long life in running and low in price.

ANSI 57-15 porcelain line post insulator              porcelain line post insulator ANSI 57-15

ANSI 57-15 porcelain line post insulator / line post insulator China parameters:

Type 57-15
Creepage distance mm 1143
Dry arcing distance mm 438
Cantilever strength KN 12.5
Power frequency flashover voltage Dry KV 160
Wet KV


Critical impulse flashover voltage Positive KV 265
Negative 380
Radio interference voltage Test voltage to ground KV 44
Max. RIV at 1 MHz μV 200

Porcelain line post insulators are used for medium voltage and low voltage transmission lines, where insulators replace the cross-arm. However, the majority of line post insulator China is used in power substations where insulators support conductors, bus bars, and equipment. For outdoor use, a deeper weather shed is used. The end-fitting seals the inner part of the tube to prevent water penetration. ANSI 57-15 porcelain line post insulator is designed to carry large compression loads, smaller bending loads, and small tension stresses.

Orient has more than 20 years history since it made line post insulator China products, the types of which are comprehensive and complying with ANSI C29.7. The ANSI 57-15 porcelain line post insulator products are widely used in China, South-east Asia , North America, South America, Oceania etc more than 20 countries and regions.

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Orient is an international line post insulator manufacturer and supplier of high quality porcelain line post insulators and porcelain pin post insulator.
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