Product Overview
This series represents a high-precision, intelligent voltage-regulating distribution transformer designed for 35kV industrial and commercial grids with strict voltage stability requirements.
Integrating a proven two-winding design with online on-load tap-changing (OLTC) functionality, it provides an ideal dynamic voltage optimization solution for critical loads, ensuring high-quality power supply continuity.
Technical Specifications
|
Rated capacity |
Rated voltage and tapping range |
Vector group |
No Load Current |
Short-circuit impedance |
No load Losses |
On load Losses |
||
|
HV |
Tapping range |
LV |
||||||
|
3150 |
35～38.5 |
±3×2.5 |
6.3 |
Yd11 |
0.4 |
7 |
1.8 |
22.2 |
|
4000 |
0.4 |
2.1 |
26.2 |
|||||
|
5000 |
0.4 |
2.6 |
30.8 |
|||||
|
6300 |
0.4 |
7.5 or 8.0 |
3.1 |
33 |
||||
|
8000 |
6.3 |
YNd11 |
0.32 |
4.3 |
36.5 |
|||
|
10000 |
0.32 |
5.1 |
43.2 |
|||||
|
12500 |
0.28 |
6 |
51.1 |
|||||
|
16000 |
0.28 |
7.2 |
63.3 |
|||||
|
20000 |
0.28 |
8.5 |
74.4 |
|||||
|
25000 |
0.24 |
10 |
10.1 |
88 |
||||
|
31500 |
0.24 |
12 |
104.4 |
|||||
Core Advantages
- Dynamic Voltage Regulation (OLTC): Standard equipped with ±3×2.5% on-load tap-changing, enabling real-time voltage adjustment without power interruption. Prevents production downtime caused by grid fluctuations.
- Flexible System Integration: HV side covers 35kV to 38.5kV. LV side offers 6.3kV, 6.6kV, and 10.5kV options. Employs Yd11 or YNd11 vector groups for excellent system compatibility.
- Optimized Impedance & Efficiency: Short-circuit impedance is tiered (7%, 7.5%, 8.0%, 10%) to match your specific protection needs. Low-loss design (no-load current down to 0.24%) minimizes operational costs.
- Wide Capacity Coverage: Ranging from 3.15 MVA to 31.5 MVA, perfectly suited for industrial parks, data centers, and commercial complexes requiring high power quality.
Typical Applications
- Main step-down substations (35kV) in industrial parks and high-end manufacturing requiring strict power quality.
- Dedicated substations for critical users such as large data centers, financial hubs, and medical facilities.
- Hub substations in regional distribution networks serving voltage support and regulation functions.
- Distribution nodes in urban core areas with concentrated voltage-sensitive loads and grid fluctuations.
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