Model Meaning
Scope Of Application
SFZ11-1600-31500/35 oil-immersed transformer is suitable for AC 50 Hz, rated working voltage 35 kV power system, as a small and medium-sized substation transformer equipment.
Iron Core
The core is cold rolled silicon steel sheet with high permeability magnetic grain orientation. The iron core is a conventional iron core,an all-oblique joint stacking type iron core, the iron core column is a multi-step circular cross -section, and the iron yoke and the iron core are equal cross-section.
Winding
The windings are concentric coils; The high voltage winding has a tap required for the tapping voltage, which is led to the tap-changer. The switch is installed on the box cover, and the tapping voltage can be changed only after the power supply is cut off.
Safety Protection Device
The transformer is equipped with a gas relay and a pressure relief valve.
Oil Protection Device
The transformers are all equipped with oil conservators, and one end is equipped with an oil level gauge;
A moisture absorber with oil seal should be installed on the transformer oil conservator;
Oil Temperature Measuring Device
The transformers are all equipped with a glass thermometer tube holder. The tube holder is located on the top of the oil tank and extends into the oil by 120±10 m;
Transformers of 10000 kVA and above are equipped with outdoor signal thermometers;
Transformer Oil Tank And Its Accessories
The transformer is generally not supplied to the car, and the welding position of the bottom bracket should comply with the provisions of GB 6451;
The lower wall of the oil tank is equipped with an oil sample valve, and the lower part of the transformer oil tank is equipped with an oil discharge valve large enough.
Working Conditions
Installation height: altitude no more than 1000 m
Ambient temperature: -40℃ ~+40℃
Loaded Oil-Immersed Power Transformer
| model | Rated Capacity (KVA) |
Rated Voltage (kV) | connection groups |
Loss(kW) | no-load current (%) |
impedance voltage (%) |
weight (kg) | |||||
| high pressure (kV) |
low pressure (kV) |
no load |
load | oil weight |
total weight |
Add oil weight |
Transport weight |
|||||
| SZ11-1600/35 | 1600 | 35± 3×2.5% 38.5± 3×2.5% |
11 10.5 6.6 6.3 |
Ynd11 | 2.2 | 16.2 | 0.9 | 6.5 | 1.8 | 6.24 | 0.45 | 4.89 |
| SZ11-2000/35 | 2000 | 2.9 | 18.7 | 0.9 | 6.5 | 2.04 | 7.04 | 0.56 | 6.24 | |||
| SZ11-2500/35 | 2500 | 3.4 | 21.7 | 0.9 | 6.5 | 2.2 | 8.1 | 0.63 | 7.1 | |||
| SZ11-3150/35 | 3150 | 4 | 26 | 0.81 | 7 | 2.475 | 9.3 | 0.72 | 713 | |||
| SZ11-4000/35 | 4000 | 4.8 | 30.6 | 0.81 | 7 | 2.71 | 11.4 | 0.78 | 8.1 | |||
| SZ11-5000/35 | 5000 | 5.8 | 36 | 0.76 | 7 | 3.1 | 12.9 | 0.85 | 9.1 | |||
| SZ11-6300/35 | 6300 | 7 | 38.7 | 0.76 | 7.5 | 3.6 | 15.4 | 0.86 | 12.1 | |||
| SZ11-8000/35 | 8000 | 35± 3×2.5% 38.5± 3×2.5% |
10.5 6.3 |
Yd11 | 9.8 | 42.6 | 0.66 | 7.5 | 4.5 | 17.8 | 0.9 | 15.4 |
| SZ11-10000/35 | 10000 | 11.6 | 50.5 | 0.63 | 7.5 | 4.6 | 19.3 | 1 | 17.2 | |||
| SZ11-12500/35 | 12500 | 12.8 | 59.9 | 0.63 | 8 | 5.9 | 24.7 | 1.2 | 18.7 | |||
| SZ11-16000/35 | 16000 | 13.8 | 68 | 0.8 | 8 | 7.9 | 32.5 | 2 | 27.1 | |||
| SZ11-20000/35 | 20000 | 17.8 | 84.6 | 0.72 | 8 | 78.9 | 36.7 | 2.1 | 30.9 | |||
| SZ11-25000/35 | 25000 | 18.6 | 99.6 | 0.72 | 8 | 8.1 | 40.3 | 2.2 | 35.4 | |||
| SZ11-31500/35 | 31500 | 20.4 | 123.8 | 0.64 | 10 | 8.2 | 42.3 | 2.3 | 36.2 | |||
Note: The dimensions and weight provided are only for reference in the design and selection, and the final dimensions and weight are subject to our company’s product drawings.
