A-10 Class (4.8 kV to 7.2 kV) ; A-20 Class (4.8 kV to 14.4 kV); A-30 Class (4.8 kV to 34.5 kV);
Porcelain Bus support insulators
are porcelain insulators that serve to isolate the bus bar switches and other support structures and to prevent leakage current from flowing through the structure or to ground. These insulators are similar in function to other insulators used in substations and transmission poles and towers.
Application Standard: IEC, ANSI, BS, AS, DIN, CAN, GB and etc.
Color: light gray, brown, white, sky blue and etc.
Non-standard products: Designed by TCI or specified by the customers.
| A-10 Class (4.8 kV to 7.2 kV) | ||||
| Class A-10 | ||||
| Cat. No. | Rating (kV) | Height (in.) | BIL | Cantilever (lbs.) , rated 2 1/2 inches above top |
| 5651 | 4.8 | 3.5 | 60 | 750 |
| 5652 | 7.2 | 4.5 | 75 | 750 |
| A-20 Class (4.8 kV to 14.4 kV) | ||||
| Class A-20 | ||||
| Cat. No. | Rating (kV) | Height (in.) | BIL | Cantilever (lbs.) , rated 2 1/2 inches above top |
| 5750 | 4.8 | 3.5 | 60 | 1,000 |
| 5751 | 7.2 | 4.5 | 75 | 1,500 |
| 5752 | 13.2 | 6 | 95 | 1,250 |
| 5753 | 14.4 | 7.5 | 110 | 1,000 |
| A-30 Class (4.8 kV to 34.5 kV) | ||||
| Class A-30 | ||||
| Cat. No. | Rating (kV) | Height (in.) | BIL | Cantilever (lbs.) , rated 2 1/2 inches above top |
| 5850-33 | 4.8 | 3.5 | 60 | 2,000 |
| 5851-35 | 7.2 | 4.5 | 75 | 3,000 |
| 5852-33 | 13.2 | 6 | 95 | 2,500 |
| 5853-32 | 14.4 | 7.5 | 110 | 2,000 |
| 5854-33 | 23 | 10.5 | 150 | 1,500 |
| 5855-33 | 34.5 | 15 | 200 | 1,250 |
Porcelain Bus support insulators
