Structural Features
S11 transformers adopt a hermetically sealed corrugated tank structure, which effectively isolates the transformer oil from external air, preventing moisture ingress and oxidation, thus significantly extending the service life of the insulation system. The core is manufactured from high-quality cold-rolled grain-oriented silicon steel sheets, ensuring low no-load loss, reduced noise, and improved energy efficiency. The windings are made of high-purity copper conductors with optimized structural design, providing excellent mechanical strength and strong short-circuit withstand capability. Combined with advanced vacuum drying and oil filling processes, the transformer achieves stable performance, enhanced operational reliability, and truly maintenance-free operation over a long service period.
|
Item |
Value |
|
Model |
S11-30/10 (S11-M-30/10 for sealed type) |
|
Rated Capacity |
30 kVA |
|
Phase |
3-phase |
|
Frequency |
50 Hz |
|
Cooling Mode |
ONAN (Oil Natural, Air Natural) |
|
Regulation Type |
Off-circuit tap changer |
3. Voltage & Connection
|
Item |
Value |
|
HV Rated Voltage |
10 kV（Compatible with 6/6.3/10.5/11 kV） |
|
HV Tap Range |
±5% or ±2×2.5% |
|
LV Rated Voltage |
0.4 kV |
|
Connection Group |
Dyn11 (common) or Yyn0 |
|
Impedance Voltage |
4.0% |
4. Loss & Current
|
Item |
Value |
|
No-load Loss (75℃) |
100 W（0.10 kW） |
|
Load Loss (75℃) |
600 ~ 630 W（0.60 ~ 0.63 kW） |
|
No-load Current |
1.5%–2.1% |
5. Weight & Dimension (Reference)
|
Item |
Value |
|
Core & Coil Weight |
Approx. 140 kg |
|
Oil Weight |
Approx. 80 kg |
|
Total Weight |
Approx. 270–300 kg |
|
Overall Dimension (L×W×H) |
Approx. 710×490×850 mm |
|
Base Distance |
400×400 mm |
6. Operating Environment
|
Item |
Value |
|
Ambient Temperature |
-30℃ ~ +40℃ |
|
Altitude |
≤ 1000 m |
|
Application |
Indoor / Outdoor |
Outline Dimension
