Porcelain Line Post Insulators for ANSI 57 Series Transmission Lines

• Application: High-voltage, High-temperature
• Material: Porcelain
• Structure: Pin Insulator
• Type: A Type Insulator
• Usage: High Voltage Power Transmission, Insulation, Electrical Installation
• Connection Method: Trough Type
• Size of Bearing Capacity: 40KN
• Certification: ISO9001
• Color: Brown/Grey
• Brand: Tkbl
• Delivery Time: 50 Working Days
• OEM: Accept
• Warranty: 1 Year
• ODM: Yes
• Transport Package: Carton+Pallet
• Specification: ANSI
• Trademark: TKBL
• Origin: China
• HS Code: 8546209090
• Production Capacity: 50000/Year

Product Description

Porcelain Line Post Insulators for ANSI 57 Series Transmission Lines
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.
 

product description

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