12.5kn 55kv Line Post Porcelain Insulator 57-4

12.5kn 55kv Line Post Porcelain Insulator 57-4 image

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Quick Details

Product Name:

12.5kn 55kv Line Post Porcelain Insulator 57-4

Model NO.:

57-4

Color:

White

Certification:

ISO9001

Size of Bearing Capacity:

12.5kn

Usage:

High Voltage Power Transmission, Insulation, Electrical Installation

Type:

A Type Insulator

Structure:

Post Insulator

Material:

Porcelain

Application:

High-voltage

Net Weight:

16kg

Trademark:

JOHNSON

Transport Package:

1000*1000*1000mm

Origin:

China

HS Code:

854620909

Product Details

Dear customers,

If you have any other questions, please feel free to contact us.

Line post type porcelain insulators
ANSI Class		57-1	57-2	57-3	57-4	57-5
Dimensions
Creepage distance	mm	356	559	737	1015	1145
Dry arcing distance	mm	165	241	311	368	438
Mechanical Values
Cantilever strength	kn	12.5	12.5	12.5	12.5	12.5
Cantilever strength routine test	kn	5	5	5	5	5
Electrical Values
Type application voltage	kv	25	35	45	55	66
Low frequency dry flashover voltage	kv	80	110	125	150	175
Low frequency wet flashover voltage	kv	60	85	100	125	150
Critical impulse flashover voltage,positive	kv	130	180	210	255	290
Critical impulse flashover voltage,negative	kv	155	205	260	340	380
Radio influence Voltage Data
Test voltage RMS to ground	kv	15	22	30	44	44
Maximum RIV at 1000kHz	μv	100	100	200	200	200
Packing and Shipping Data
Net weight,approximate	kg	5.2	9.0	11.0	16.0	18.0

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