oil-immersed transformer S11,30-2500KVA,10KV series,3 phae/full
sealed/double winding 
Hengfengyou covers a wide range of Oil Filled Power Transformers
with On Load Tap Changer (up to 2500 KVA in 11 KV & 33 KV Class)
conforming to the international standards of quality and safety.
These transformers are designed and developed using latest
technologies and can be provided with a variety of terminations so
as to suit the requirements for new installation or replacement.
Optimum efficiency is ensured by delicate proportioning of core and
winding looses Electrolytic Grade pure copper, with Transposition
in L.V. coil for current sharing in parallel Conductors, Electric
grade press paper, boards and mineral oil. Thus better regulation
is achieved resulting in longer life. Careful designing also
reduces noise level to the minimum.
Standard Fittings
Rating & Diagram plate-Earthing terminals
Lifting lugs- Thermometer pocket
Oil Conservator with drain plug-Air release hole with plug
Oil Level indicator-Explosion vent with diaphragm
Top-filter Valve-Inspection cover.
Silica gel breather-Drain –cum-bottom-filter valve
Cooling radiators-Uni / Bi- directional rollers
Optional Features
Buchholz relay with alarm and trip contact-Magnetic oil level gauge
with alarm contact
Pressure Release Valve-Marshalling box to house O.T.I. and W.T.I
Cable Box on H.T. Side-Cable Box on L.T. Side.
Oil Temp. Indicator with alarm & trip contact-RTCC (Remote Tap
Changer Control) Cubicle
Winding Temp. indicator with alarm & trip contact-Electronic
Automatic Voltage Controller
High-quality material
a. The three- phase oil-immersed Power Transformer applies new type
insulating structure.
b. The iron core is made of high-quality cold-rolled silicon-steel
plate 27ZH10.
c. All fasteners have been processed with special trearment to
prevent them from loosening.
Oxygen-free copper lines of lower resistivity, which will become
smoother and burr-free after series of additional surface
treatment, so the load loss of our transformer is lower and the
electric performance is better.
High-quality silicon-steel plates which are of lower unit loss, and
the no-load of the transformers is lower.
High-quality wooden laminating insulation pieces, which won’t split
or move even under the influence of short circuit.
Thoroughly filtrated transformer oil containing less water, gas and
impurities, which makes our transformers work better.
High-quality rubber sealing material, which can prevent the
transformers form aging or leakage.
Technical data
| | | | | | | SHORT CIRCUIT IMPENDENCE(%) |
| | |
S11-M-30 | 30 | YYN0 ORDYN11 | | | | 100 | 630/ 600 | 2.3 | 4.0 |
S11-M-50 | 50 | 130 | 910/ 870 | 2.0 | 4.0 |
S11-M-63 | 63 | 150 | 1090/1040 | 1.9 | 4.0 |
S11-M-80 | 80 | 180 | 1310/1250 | 1.9 | 4.0 |
S11-M-100 | 100 | 200 | 1580/1500 | 1.8 | 4.0 |
S11-M-125 | 125 | 240 | 1890/1800 | 1.7 | 4.0 |
S11-M-160 | 160 | 280 | 2310/2200 | 1.6 | 4.0 |
S11-M-200 | 200 | 340 | 2730/2600 | 1.5 | 4.0 |
S11-M-250 | 250 | 400 | 3200/3050 | 1.4 | 4.0 |
S11-M-315 | 315 | 480 | 3830/3650 | 1.4 | 4.0 |
S11-M-400 | 400 | 570 | 4520/4300 | 1.3 | 4.0 |
S11-M-500 | 500 | 680 | 5410/5100 | 1.2 | 4.0 |
S11-M-630 | 630 | 810 | 6200 | 1.1 | 4.5 |
S11-M-800 | 800 | 980 | 7500 | 1.0 | 4.5 |
S11-M-1000 | 1000 | 1150 | 10300 | 1.0 | 4.5 |
S11-M-1250 | 1250 | 1360 | 12800 | 0.9 | 4.5 |
S11-M-1600 | 1600 | 1640 | 14500 | 0.8 | 5.0 |
S11-M-2000 | 2000 | 2280 | 17820 | 0.6 | 5.0 |
S11-M-2500 | 2500 | 2700 | 20700 | 0.6 | 5.0 |
S11-M-3200 | 3200 | 3200 | 23400 | 0.6 | 5.0 |
·Service conditions
1. The maximum ambient air temperature shall not exceed 40 ℃, and
the minimum shall not below - 25 ℃;
2. The altitude shall not exceed 1000m. If special customized
transformers and low-voltage components are used, the altitude can
reach 4000m;
3. The vertical inclination is no more than 5 °, and no violent
vibration and impact;
4. The air humidity is not more than 90% (+ 25 ℃);
5. No gas and conductive dust that will seriously affect the
insulation of transformer, no explosion hazard and corrosion of
electrical components;
6. Outdoor wind speed shall not exceed 35m / s.
7. If service conditions beyond the above, specially customized
product is available.
Workshop
About Our Company:
1. 25 years' manufacturing experience with three subsidiaries
2. Won tenders aboard
3. IEC 60076 & ISO certificate
4. OEM / ODM
5. Competitive price with 100% Cu winding
6. Production capacity: 10,000,000 kVA per year
If any interest , pls feel free to contact us:
