Product Details

Specifications

ANSI Porcelain Line Post Insulator
1.Porcelain material
2.Sample is available
3.Factory price
4.ANSI,DIN,AS,BS,SA

ANSI 57-5 Porcelain Line Post Insulator

Product Description

About the Porcelain Line Post Insulator

As insulating and supporting conductor in HV transmission & distribution line, post insulators are divided into line post porcelain insulator, cross arm porcelain insulator and long rod suspension insulator etc. They have 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 lower in price.

1.Certificated by IEC ANSI GB ISO9001
2.We can design and produce according to the drawings.

Specifications

Technical drawings

Technical Specifications

Usual line voltage/kV			66
ANSI Class			57-5
Designation of Neck			N
Height” A”/in(mm)			20 (508)
Diameter ”B”/in(mm)			7 (178)
Diameter ”C” /in(mm)			5 (127)
Thread ”D” /in(mm)			3/4-10UNC
Min. leakage distance/in(mm)			45 (1145)
Dry arcing distance/in(mm)			17-1/4(438)
Cantilever strength/lb(kN)			2800 (12.5)
Average flashover voltage	Low Frequency	Dry/kV	175
		Wet/kV	150
	Critical Impulse	Pos. /kV	290
		Neg. /kV	380
Withstand voltage	Low frequency	Dry/kV	140
		Wet/kV	120
	Impulse/kV		235
Radio influence voltage data	Test voltage/kV		44
	Max. RIV at 1,000kHz/uV		200
Net weight/lb(kg)			46 (21)

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