ANSI Porcelain bushing is a crucial insulating component specifically designed for high-voltage electrical appliances such as transformers, switchgear, and current transformers in a 15kV power system. It is made of high-quality high-alumina ceramic material (or silicate porcelain, depending on the standard) and features excellent electrical insulation performance, mechanical strength, and weather resistance, making it suitable for long-term stable operation in outdoor and harsh environmental conditions.
| ANSI standard bushings(15~38kV/55A) | |||||||||
| No. | Model | (Dimensions) | Arcing distance |
Creep distance |
Shield | Weight (kg) |
|||
| H | h2 | D | d1 | h1 | |||||
| 1 | ANSI-15/55 | 498 | 184 | ∅8.7 | 101 | 156 | 310 | 4 | |
| 2 | ANSI-18/55 | 554 | 184 | ∅8.7 | 101 | 213 | 480 | 7 | |
| 3 | ANSI-25/55 | 611 | 184 | ∅8.7 | 101 | 269 | 775 | 10 | |
| 4 | ANSI-27/55 | 739 | 237 | ∅8.7 | 107 | 344 | 830 | 11 | |
| 5 | ANSI-38/55 | 895 | 280 | ∅8.7 | 105 | 458 | 1140 | 15 | |
| 6 | ANSI-15/55 | 499 | 184 | ∅13 | 101 | 156 | 310 | 4 | 2.8 |
| 7 | ANSI-18/55 | 555 | 184 | ∅13 | 101 | 213 | 480 | 7 | 3.5 |
| 8 | ANSI-25/55 | 612 | 184 | ∅13 | 101 | 269 | 775 | 10 | |
| 9 | ANSI-27/55 | 740 | 237 | ∅13 | 107 | 344 | 830 | 11 | 5 |
| 10 | ANSI-38/55 | 896 | 280 | ∅13 | 105 | 458 | 1140 | 15 | |
3. Features
1). Excellent insulation performance: Utilizing high-purity ceramic materials, it features high breakdown voltage and excellent dielectric strength, ensuring safe operation at 15kV voltage.
2). High mechanical strength: The ceramic body has high bending and compression strength, capable of withstanding mechanical stress during installation and operation.
3). Strong environmental resistance: It possesses excellent weather resistance, UV resistance, anti-flashover ability, and anti-aging capability, making it suitable for long-term outdoor use.
4). Precise current carrying capacity: The design supports a rated current of 55A, and the structure of the conductor connection part is reasonable, ensuring stable current carrying and low temperature rise.
5). Standardized design: The flange connection conforms to common specifications of the American standard, facilitating connection and installation with transformers, switches, and other equipment.
6). Flexible customization: Different flange standards (ANSI, DIN, etc.), conductive rod specifications, porcelain sleeve length, installation methods, coating protection, etc. can be provided according to user requirements.
1). 15kV voltage transformer lead-out insulation protection
2). High-voltage bushings of switch cabinets, ring main units, and load switches
3). Voltage transformers (PT) and current transformers (CT) insulation lead-out components
4). Industrial substations, distribution rooms, outdoor pole-mounted transformers, etc.
5). Power transmission and transformation equipment with high requirements for insulation and weather resistance
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