S11 Oil-immersed Power Transformer
The S11 Series Oil-Immersed Power Transformer has the advantages of small size, low noise, no leakage, maintenance-free, strong overload capability, etc. The product performance reaches the international advanced level, which is the updated and next-generation product of the energy-saving distribution transformer, and is the preferred product for reconstruction of urban and rural power grids.
Model Description:
Technical Parameters:
1. Rated Capacity: see the following table;
2. Rated Voltage: see the following table;
3. Rated Frequency 50 Hz
4. Number of Phases: 3 phases;
5. Cooling Mode; oil-immersed natural cooling(ONAN);
6. Temperature Resistance Level of the Insulation Materials: Level A;
7. Technical Performance Data and Coupling Group Number: see the following table.
Rated Capacity (kVA)
Voltage Combination (kV)
Coupling
Group
Idle Load
Loss (W)
Load Loss (W) (75℃)
Short-circuit
Impedance (%)
No-load
Current (%)
High-voltage (KV)
Tapping (%)
Low-voltage (KV)
50
6 10
±2×2.5
±50.4
Dyn11 Yyn0
130
910/870
4
1.6
100
200
1580/1500
1.4
200
340
2730/2600
1.2
315
480
3830/3650
1.1
400
570
4520/4300
1
500
680
5410/5150
1
630
810
6200
4.5
0.9
800
980
7500
0.8
1000
1150
10300
0.8
1250
1360
12000
0.7
1600
1640
14500
0.6
Note: for the transformer with the rated capacity of 500KV?A and below, the load loss above the slash in the table is only applicable for Dyn11 connection group, and the load loss value below the slash is applicable for Yyn0 connection group.
Rated Capacity KVA
Weight Kg
External Dimensions mm
Gauge mm
Body Lifting Weight
Total Weight
Length × Width × Height
Vertical / Lateral
100
300
610
1200×750×1150
550/550
200
545
960
1295×795×1250
660/660
315
735
1230
1390×850×1310
660/660
400
875
1470
1475×910×1370
660/660
500
950
1700
1475×910×1370
820/820
630
1120
1970
1530×990×1400
820/820
800
1430
2550
1680×1140×1590
820/820
1000
1560
2620
1715×1145×1670
820/820
1250
2010
3280
1760×1240×1670
820/820
1600
2280
3800
1785×1180×1860
820/820
1. Low noise: compact designed structure, application of new materials and new processes, noise reduction, no oil conservator, height lower than that of like products. Oil change is not required within the normal life span, which improves safety and reliability of power grid operation.
2. Vacuum oil filling process is adopted for transformer packaging, which completely removes dampness in the transformer oil tank. The transformer is not in contact with air after sealing, which effectively prevents oxygen and moisture from entering the transformer that can lead to insulation performance decline (insulation and oil aging). Therefore, regular oil sample test is not necessary.
3. Reliable Long Service Life Span: the bolted connection or welded structure is adopted for the fully sealed box cover and box edge, so as to isolate contact between oil and air. Insulation will not be affected with damp, which greatly reduces insulation aging speed, and improves service life span.
4. Small Size and Artistic Outline. The corrugated plate radiating fin is adopted for S11 series carburetor. In case of any change in the oil temperature, changes in the oil volume shall be adjusted through elastic expansion and contraction of the corrugated plate for compensation. The corrugated tank has an artistic outline, small size and small space occupying.
5. No Lifting Center: it is not required to check the lifting center before operation of the fully-sealed transformer, thus users can save the expense for lifting center inspection.
6. Maintenance-free: maintenance is not required.
1. Maximum temperature: +40℃/+104oF;
2. Maximum daily average temperature: +30℃/+86oF;
3. Maximum annual average temperature: +20℃/+68oF;
4. Minimum temperature: -45℃/-49oF;
5. Elevation shall not exceed 1000m;
6. Indoor or outdoor use.
Note: please make specific instructions in case of any special use conditions.
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