ANSI 57-4 Line Post Insulator for Transmission and Distribution

• Customization: Available
• Application: High-voltage
• Material: Porcelain
• Model NO.: 57-4
• Structure: Post Insulator
• Usage: High Voltage Power Transmission, Insulation, Electrical Installation
• Connection Method: Spherical Type
• Certification: CCC, CE, ISO9001
• Transport Package: Wooden Case Packing
• Specification: portland cement
• Trademark: PAC
• Origin: China
• HS Code: 8546209090
• Production Capacity: 500000PCS/Year

Product Description

Line post type porcelain insulators
ANSI Class		57-4
Dimensions
Creepage distance	mm	1015
Dry arcing distance	mm	368
Mechanical Values
Cantilever strength	kn	12.5
Cantilever strength routine test	kn	5
Electrical Values
Type application voltage	kv	55
Low frequency dry flashover voltage	kv	150
Low frequency wet flashover voltage	kv	125
Critical impulse flashover voltage,positive	kv	255
Critical impulse flashover voltage,negative	kv	340
Radio influence Voltage Data
Test voltage RMS to ground	kv	44
Maximum RIV at 1000kHz	μv	200
Packing and Shipping Data
Net weight,approximate	kg	16.0