Oufdoorimmersed bushing
Bushing, one end of which is intended to be in ambient air and exposed to outdoor atmospheric conditions and the other end to be immersed in an insulating medium other than ambient air (e.g. oil or gas).
Creepage distance
Shortest distance along the surface of an insulafor between fwo conducfive parts
Minimum nominal creepage distance
Unless otherwise agreed between purchaser and supplier, or demonstrafed by a fest, the creepage distance in accordance with lEC 815 isdetermined by Ur/KVl x dcs /mm/kV)x kD where;
Arcing distance
Shortest distance in citr extemal to the insulator between metalic parts which normally have the operating voltage between them.
Altitude
Although the insulafion level refers to sea level, bushings coresponding fo this standard are declared suitable for operafion at any altitude not exceeding 1000 m. in order to ensure hat the external withstand voltages of the bushing are suficient at alitudes exceeding 1000 m, the arcing distance normally required shall be increased by a suitable amount. It is not necessarv to adjust the radial thickness of insulation or the clearance of the immersed end. The puncture strength and the flashover voltage in the immersion medium of a bushing are not affected by altitude.
To the limitations of puncture strength and flashover voltage in the immersion medium it may not always be possible to check the adequacy of the increased arcing distance by actual test at any altitude lower than that of operation. In such a case the supplier shall demonstrate by the amount of increase of the arcing distance, that the bushing is adequate.
For general guidance an increase of 1,0% of the arcing distance necessary at sea level for each 100 m in excess of 1000 m up to a maximum of 3000 m above sea level should be applied.
EXAMPLE Altitude of installation 2800 m;
Increase in arcing distance.
Material: porcelain in accordance group C100 or equivalent maferial.
Colour: brown (other materials are allow by previous agreement)
Surface: glazed excepting for the worked surfaces.
Transformer bushing insulators DIN 42530 1kV - 250 / 3150A
| CODE |
A50012000 |
A50020000 |
A50030000 |
A50042000 |
A50048000 |
| CLASS |
1/250 |
1/630 |
1/1000 |
1/2000 |
1/3150 |
| Draw. refer |
A |
B |
A |
B |
A |
B |
A |
B |
A |
B |
| H |
70 |
30 |
80 |
30 |
85 |
35 |
85 |
35 |
85 |
35 |
| D |
50 |
60 |
70 |
85 |
90 |
110 |
104 |
125 |
125 |
150 |
| d1 |
32 |
30 |
47 |
46 |
65 |
57 |
80 |
70 |
100 |
90 |
| d2 |
50 |
50 |
70 |
70 |
90 |
90 |
104 |
104 |
125 |
125 |
| d3 |
27 |
26 |
43 |
41 |
53 |
46 |
66 |
64 |
86 |
80 |
| d4 |
14 |
|
22 |
|
32 |
|
44 |
|
50 |
|
| h |
25 |
20 |
25 |
20 |
30 |
25 |
30 |
25 |
30 |
25 |
| F |
|
50 |
|
70 |
|
90 |
|
104 |
|
125 |
| F1 |
|
20 |
|
28 |
|
37 |
|
51 |
|
61 |
| Creepage distance mm |
50 |
|
75 |
|
75 |
|
75 |
|
75 |
|
| Arcing distance mm |
50 |
|
60 |
|
60 |
|
60 |
|
60 |
|
| Rated voltage kV |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
| g / Weight (gr.) |
160 |
100 |
380 |
190 |
640 |
400 |
820 |
470 |
1350 |
700 |
ATTENTION:
1. The payment term: We accept TT,30% deposit and 70% balance against copy of BL.
2. The delivery time: Usually it will take about 15-20 days.
3. The standard of package: Usually use strong plywood case for protection.
4. The material of transformer: We have two types, one is with copper and another one is with aluminum. It depends on your requirement. In fact, those two have difference if normal work well. Only except the long life. Copper is better and also higher price.
5. The logo: If you have good quantity, it absolute no problem to do OEM.
6. Our market: our products are popular in Indonesia, Philippines, Russia, USA, Middle East and so on. Some of them are our regular customers and some of them are developing. We hope you can join us and make mutual benefit from our cooperation..
7. Warranty: in 12 month since BL date.
OUR SERVICE:
1. quick response in before sales period help you got order.
2. excellent service in production time let you know each step we made.
3. reliable quality solve you after sale headache.
4. long period quality warranty ensure you can buy without hesitate.
Service Promise:
We place great importance on product quality and after-sales service, and we promise that we will follow the principles below:
1.Customer-Oriented: Our goal is to add value to your business and contribute to your success.
2.Quick response: 8 hours response time within the province, and 24 hours in other places in China.
3.Warranty service: quality assurance (repair, exchange, return), and lifetime service.
4.Our after-sales service team is made of technology, production, and quality control departments who have taken professional troubleshooting training. The team will quickly respond to service requests from customers all over the world. The Company has also set up the after-sales service network to make sure our customers get the first-rate technical service.
5.After-sales service (7:30 AM-6:00PM): +86-62803669
FAQ:
Q1: Are you a manufacturing or trading company?
A1: Yes, we are manufacturer dedicated to design customized for different country standards and production of a wide range of high-quality transformers,switchgears, power substations. Meanwhile, we can also provide relevant accessories and components with quality guaranteed from our branch factories. We improve the design to make our products more competitive in the market but with better quality to ensure the long time performance.
Q2: How does your factory do regarding quality control and after-sales support?
A2: All the products will be 100% checked and tested before delivery. We also have an inspection team to make videos with customers online or by email. All our products comply with strict tests, and easy maintenance is guaranteed. We also offer on-line after-sale service in case of any further problems.
Q3: When can I get the price?
A3: Usually we quote within 1 hour after we get your inquiry. For customized products that need special design, we will quote within 12 hours with details specifications for confirmation.
Q4: Can you manage the delivery directly to our country with the DIP term?
A4: Yes, we have our own Logistics company that helps to find a better solution for delivery, and that make the delivery time more punctual and at a lower cost.
Q5: Can I get a guarantee of products after delivery?
A5: Yes, every product is 2-3 years of quality warranted under the customer's correct using the products.
Q6: Do you have any Certificates?
A6: Yes. Each of our products has CE, 3C and CQC certificates. If you need any other Certificate, we can help you to apply it.
Q7: How can I pay you?
A7: The payment by T/T and L/C is acceptable.
Audited Supplier 
Arcing distance
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