Pin Type Porcelain Insulator ANSI 56-3

Type:
ANSI 56-3

Overview:
ANSI Class 56-3 Porcelain insulators are used in medium voltage distribution lines and overhead distribution substations. They are designed to withstand adverse environmental conditions such as sea breezes and chemical elements present in industrial areas.
They also withstand the thermal, dynamic and electrical stresses caused by possible short circuits, maximum operating voltage and over voltages.

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Specifications

No.	FEATURES	UNIT	VALUE
1	Standard		ANSI C-29.6
2	Insulating material		Porcelain
3	ANSI class		56-3
4	Insulator rated voltage	kV	24/36
5	Dimensions
	Creepage distance	mm.	537
	Dry arc distance	mm.	241
6	Cantilever strength	kN.	13
7	Breakdown voltage	kV.	165
8	Low frequency disruptive voltage
	- Dry	kV.	125
	- In the rain	kV.	80
9	Critical impulse voltage
	- positive	kVp.	200
	- negative	kVp.	265
10	Radio Interference Voltage
	- Low frequency test voltage, rms grounded	kV (rms)	30
	- Maximum RIV at 100 KHz	µV	200
11	Top treatment to reduce radio interference		Using semiconductor varnish
12	Coupling thread with spike		On the porcelain
13	Top thread diameter	mm.	35
14	Maximum and minimum dimensions according to ANSI C29.6 Standard		Yes