Line Post Porcelain Insulators for High Voltage ANSI Class 57-1s/57-1L, 57-2s/57-2L, 57-3s/57-3L, 57-4s/57-4L, 57-5s/57-5L

• Application: High-voltage
• Material: Porcelain
• Structure: Post Insulator
• Usage: High Voltage Power Transmission, Insulation
• Size of Bearing Capacity: 160KN
• Certification: ISO9001, ANSI
• Model NO.: Line Post Insulator ANSI series
• Color: Brown
• Brand: Ziyong
• Transport Package: Standard Package
• Specification: Porcelain
• Trademark: JMA
• Origin: China
• HS Code: 8538900000
• Production Capacity: 50000pieces/Year

Product Description

Line post insulators are used to support the high voltage conductor and are mounted on pedestals or on the power line cross arms. Our line post insulators are especially designed for distribution lines with typical application voltages raging from 25kV to 66kV according ANSI class.Their strong robust structural form provides unequaled mechanical and electrical features.

Material: porcelain
Color: brown
Standard: ANSI



Drawing




Basic Data

ANSI class		57-1S/57-1L	57-2S/57-2L	57-3S/57-3L	57-4S/57-4L	57-5S/57-5L
Fig No.		3	4	5	1	2
Dimensions of the pin	mm	M16	M20(M16)	M20	M20	M20
Creepage distance	mm	356	559	737	1015	1145
Dry arcing distance	mm	165	241	311	368	438
Cantilever strength flashover voltage	kN	12.5	12.5	12.5	12.5	12.5
Low 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
Radio influence voltage data	Test voltage to ground, kV	15	22	30	44	44
	Max. RIV at 1000KHz, uV	100	100	200	200	200
Weight	kg	5	9.8	12	16	18

Festures:
Available in both horizontal and vertical trunnion  
Horizontal used for applications such as down-leads and jumper loop control
Vertical used for applications such as cross arms and structures
Small volume and light weight and easy to transport and install
The superior in performance and high intensity mechanical enhance reliability of power line
Extraordinary hydrophobic and resistance to contamination
Long-duration resistance aging and leakage tracking.

Service
Choose our products! You'll get
1) Good quality guarantee (2 years)
2) Factory direct prices
3) On time delivery
4) Free sample
5) Professional technology support 

Strict quality controls have been taken to ensure that you'll get reliable products. 
a. Material checks before production. 
b. Random inspection during production. 
c. Inspection before the shipment. 

Our products fully comply with well recognized standards such as IEC, BS, ANSI. 

FAQ: 
1. Q: Do you have a catalog? Can you send me the catalog to have a check of all your products? 
A: Yes, We have product catalog. Please contact us, we'll send our catalog by E-mail. 

2 Q: I can't find the product on your catalog, can you make this product for me? 
A: Our catalog shows most of our products but not all. If you couldn't find it, let us know the specification of your requirements, it usually takes 20-30 days for us to design and make new moulds which match your requirements.  

3 Q: What's your payment term? 
A: The price FOB Ningbo under payment term is 50% T/T in advance and the balance before shipment.