Ningbo Tianan (Group) Co.,Ltd.
Ningbo Tianan (Group) Co.,Ltd
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12kv Zbw series Prefabricated Compact Transformer Substation with 3 Phase Transformers
Service condition
1. Altitude: ≤ 1000m (above sea level)
. Ambient temperature: Max. 40C Min. -25C
>> Max. Monthly average temperature: ≤ 35C
>> Max. Yearly average temperature: ≤ 25C
3. Relative humidity: Daily average value≤ 95%, monthly average value≤ 90%
4. Max. Daily difference in temperature: 25C
5. Sunlight intensity: 0.1W/CM2 (wind speed 0.5M/S);
6. Outdoor wind speed: ≤ 35m/s;
7. Pollution grade: Grade III;
8. Rain proof grade: Grade 3;
9. The gradient on installation spot shall be not more than 3° ;
10. Ability of anti-earthquake: Horizontal acceleration of ground surface is 0.2g
Vertical acceleration of ground surface is 0.1g;
11. Installation spot: The spot should has no fire/explosion danger/serious pollution/chemical
corrosion and exquisite shake.
Technical parameters
| Items | Unit | Parameters | |
| High Voltage Part | Rated voltage | kV | 12 |
| Rated frequency | Hz | 50 | |
| Rated current of main busbar | A | 630 | |
| 1mm power frequency withstand voltage (to earth and between phases/disconnecting fracture) | kV | 42/48 | |
| Lightning impulse withstand voltage (to earth and between phases/disconnecting fracture) | kV | 75/85 | |
| Rated short time withstand current | kA/s | 25/2 | |
| Rated peak withstand current | kA | 63 | |
| Rated short time making current | kA | 50 | |
| Rated transfer current | A | 1500 | |
| Breaking current of fuse | kA | 31.5 40 | |
| Low Voltage Part | Rated voltage | V | 400 |
| Rated current of main circuit | A | 100-4000 | |
| Rated limiting short circuit breaking ability | kA | 80 | |
| Rated operating short circuit breaking ability | kA | 50 (65) | |
| Rated short time withstand current | kA/1s | 50 (65) | |
| Branch current,compensating capacity | According to requirements of users | ||
| Transformer | Rated capacity | kVA | 30-2000 |
| Impedance voltage | % | 4 4.5 | |
| Tapping range | % | ±2×2.5 ±5 | |
| Connection symbol | Y, yn0 D, yn11 | ||
| Case | Protection level of enclosure | IP23 | |
| Sound level | dB | ≤50 | |
Note: The parameters are taken from HXGN26-12 High Voltage Switchgear, TANW1 Series Intelligent Circuit Breaker and S9-M Oil Type Transformer which are produced by our company.
Services
1.Various special requirement from customer or typical specification .
2.Competitive price (Real factory ).
3.Excellent quality control.
4.Good service and after sales.
5.In time delivery.
6. Manufacturing after drawings approved.