ANSI 57-4 Porcelain Line Post Insulator

Specifications ANSI Porcelain Line Post Insulator

1.Porcelain material

2.Sample is available

3.Factory price

4.ANSI,DIN,AS,BS,SA

ANSI 57-4 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			55
ANSI Class			57-4
Designation of Neck			N
Height” A”/in(mm)			17 (432)
Diameter ”B”/in(mm)			7 (178)
Diameter ”C” /in(mm)			5 (127)
Thread ”D” /in(mm)			3/4-10UNC
Min. leakage distance/in(mm)			40 (1015)
Dry arcing distance/in(mm)			14-1/2(368)
Cantilever strength/lb(kN)			2800 (12.5)
Average flashover voltage	Low Frequency	Dry/kV	150
		Wet/kV	125
	Critical Impulse	Pos. /kV	255
		Neg. /kV	340
Withstand voltage	Low frequency	Dry/kV	120
		Wet/kV	100
	Impulse/kV		200
Radio influence voltage data	Test voltage/kV		44
	Max. RIV  at 1,000kHz/uV		200
Net weight/lb(kg)			36 (16)

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reducing your communication cost
2. We can design parameters.

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Dalian Tucheng International Corp.
Dalian Composite Insulator Corp.
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