Post Line Insulator
Product name: Post line insulator 57-4
Material: Alumina and silica porcelain
Application: Electricity transmission and transformation
Line post insulators are widely applied. From torrid zone to frigid zone, line post insulators enable continued operation at the designed voltages.
Advantages
The main material of them are aluminium and silica, they have high dielectric properties and great mechanical performance;
The metal fittings are made from metals that will not deteriorate and are ideal for supporting copper and aluminum busbars;
Experienced staff who can control the process to ensure the quality for our customers and has routine tests for every product;
The design of the porcelain insulators from CLD complies with the mechanical and electrical requirements of IES, ANSI and other standards requested by our clients.
Technical Parameters
Type | 57-1 | 57-2 | 57-3 | 57-4 | 57-5 | |
Creepage distance (min) mm | 356 | 559 | 737 | 1016 | 1143 | |
Drying arcing distance mm | 165 | 241 | 311 | 368 | 438 | |
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 interference voltage | Test voltage to ground | 15 | 22 | 30 | 44 | 44 |
Max. RIV at 1 MHZ | 100 | 100 | 200 | 200 | 200 | |
Net weight kg | 5.2 | 9 | 11 | 18 | 18 | |
Applicable standard | ANSI | ANSI | ANSI | ANSI | ANSI | |
Type | 57-31 | 57-32 | 57-33 | |
Creepage distance（min）mm | 356 | 559 | 737 | |
Drying arcing distance mm | 165 | 241 | 311 | |
Cantilever strength KN | 12.5 | 12.5 | 12.5 | |
Power frequency flashover voltage | Dry KV | 70 | 100 | 125 |
Wet KV | 50 | 70 | 95 | |
Critical impulse flashover voltage | Positive KV | 120 | 160 | 200 |
Negative KV | 155 | 205 | 260 | |
Radio interference voltage | Test voltage to ground | 15 | 22 | 30 |
Max.RIV at 1 MHZ | 100 | 100 | 200 | |
Net weight kg | 9.5 | 12.5 | 15.7 | |
Applicable standard | ANSI | ANSI | ANSI | |
FAQ
Q: Do you offer OEM service and can you produce as our drawings?
A: Yes. We offer OEM service. We accept custom design and we have a professional design team who can design products based on your requirements. And we can develop new products according to your samples or drawing
Q: Can I request to change the form of packaging and transportation?
A: Yes, We can change the form of the packaging and transportation according to your request, but you have to bear their own costs incurred during this period and the spreads.
Q: Can I request to advance the shipment?
A: It should be depends on whether there is sufficient inventory in our warehouse.
Q: Are there any special requirements for OEM purchases?
A.Yes, we require proof of trademark registration in order to print or emboss your trademark onto the product or packaging.
Q: Can you provide drawings and technical data?
A: Yes, our professional technical department will design and provide drawings and techical data.