Porcelain Post Insulator 57-3G for High Voltage

• Application: High-voltage
• Material: Porcelain
• Structure: Post Insulator
• Type: Insulator
• Usage: High Voltage Power Transmission
• Connection Method: Trough Type
• Model NO.: 57-3G
• Size of Bearing Capacity: 40KN
• Certification: CCC, CE, ISO9001
• Color: Brown
• Brand: Optelec or OEM
• Model: 57-3G
• Rated Voltage: 33kv
• Tensile Strength: 12.5kn
• Transport Package: Plywood Box
• Specification: CE, ISO9001
• Trademark: JETPOWER
• Origin: China
• HS Code: 85462090
• Production Capacity: 1000PCS/Day

Product Description

ANSI57 Series  
Line Post Type Porcelain Insulator 57-3G

Technical Parameters:

ANSI Class		57-1	57-2	57-3	57-4	57-5
Creepage distance,mm		356	559	737	1015	1145
Dry arching distance		165	241	311	368	438
Cantilever Strength,Kn		12.5	2.5	12.5	12.5	12.5
Lower Frequency Flashover Voltage	Dry,kv	80	110	125	150	175
	Wet,kv	60	85	100	125	150
Critical Impulse Flashover Voltage	Pos.,kv	130	180	210	255	290
	Neg.,kv	155	205	260	340	380
RIV Data	Test volt. To ground,kv	15	22	30	44	44
	Max RIV at 1000 KHz,Uv	100	100	200	200	200

Type No. :ANSI57 series
Name: Line post type porcelain insulator
Color:Brown,grey gloze etc