Active Member
|
[China]
Address: 21/F, Building 1, No. 816,Jinghua Road, Hi-tech Zone,Ningbo, Zhejiang, P.R. China
Contact name:Tony ma
Ningbo Tian'an Jinghua Power Technology Co., Ltd. |
|
|
12KV Three Phase 50HZ Smart Grid Devices 1250A Electrical Protection Devices
1. General Features of 12KV Three Phase 50HZ Smart Grid Devices 1250A Electrical Protection Devices
ZN12 -40.5 series indoor high voltage vacuum circuit breaker applied to power system that of 35KV three-phase AC 50HZ. It is using the longitudinal magnetic field contacts for the ceramic structure,the proliferation of breaking arc generated when current distribution in the contact on the same local melting phenomenon does not occur, but also has a low arc energy voltage (20-200V) and low chopping current (4-5A), and operate with high reliability organizations.
2. Environmental Condition of 12KV Three Phase 50HZ Smart Grid Devices 1250A Electrical Protection Devices
3. Technical Data of 12KV Three Phase 50HZ Smart Grid Devices 1250A Electrical Protection Devices
| No. | Item | Unit | Data |
| 1 | Rated voltage | KV | 40.5 |
| 2 | Rated current | A | 1250,1600,2000,2500,3150 |
| 3 | Rated frequency | HZ | 50 |
| 4 | Rated short time with stand current | KA | 25,31.5 |
| 5 | Rated short-circuit breaking current times | 20 | |
| 6 | Mechanical life | times | 30000 |
| 7 | Rated lightning impulse with stand voltage | KV | 185 |
| 8 | Rated operating sequence | O-0.3S-CO-180S-CO | |
| 9 | Raged voltage of closing and opening electromagnet | V | AC/DC220,110 |
| 10 | Rated voltage of no-voltage release | V | AC/DC220,110 |
| 11 | Rated short-duration power frequency withstand voltage (1min) | KV | 95 |
| 12 | Opening time | ms | 30≤t≤75 |
| 13 | Closing time | ms | 30≤t≤65 |
| 14 | Energy storage time | s | ≤15 |
