ANSI 57 Series Porcelain / Ceramic Insulator for High Voltage Transmission Line

• Application: High-voltage
• Material: Porcelain
• Structure: Pin Insulator
• Type: Pin Type
• Usage: High Voltage Power Transmission, Insulation, Electrical Installation
• Connection Method: Trough Type
• Model NO.: Porcelain line post insulator
• Size of Bearing Capacity: Customer Specified
• Certification: ISO9001
• Color: Brown / Grey
• Brand: Pk
• Delivery Time: 25-40 Working Days
• OEM: Accept
• Warranty: 1 Year
• Transport Package: Carton + Pallet
• Specification: ANSI
• Trademark: PK
• Origin: Liling China
• HS Code: 8546209090
• Production Capacity: 50000/Year

Product Description

ANSI 57 Product Description

Specifications
 1. original insulator producer 
 2. superior properties of low and medium temperature resistance;
 3. strong aging resistance;
 4. nice appearance & long service time.
 5. comman glaze and semi-conductor glaze, color brown and gray both available.
 6. free sample, professional porcelain insulator supplier.

 

ANSI CLASS	With long stud	57-1L	57-2L	57-3L	57-4L	57-5L
	With short stud	57-1S	57-2S	57-3S	57-4S	57-5S
Fig. No.		1	2	3	4	5
Creepage Distance (mm)		356	559	737	1016	1143
Dry Arcing Distance (mm)		165	241	311	368	430
Cantilever Strength(kN)		12.5	12.5	12.5	12.5	12.5
Power Frequency Flashover Voltage	Dry /kV	70	100	125	140	160
	Wet/kV	50	70	95	110	130
Critical Impulse  Flashover Voltage	Positive/kV	120	160	200	230	265
	Negative/kV	155	205	260	340	380
Radio Influence voltage	Test Voltage to ground/kV	15	22	30	44	44
	Maximum RIV at 1MHz/uV	100	100	200	200	200