120000kVA 230kv Oil Immersed on Load Tap Changer Power Transformer

Description:
Double Winding Non-excitation Voltage Regulation Transformer: Maximum 420000kVA
Three Winding Non-excitation Voltage Regulation Transformer: Maximum 240000kVA
Double Winding On-load Voltage Regulation Transformer: Maximum 240000kVA
Three Winding On-load Voltage Regulation Transformer: Maximum 240000kVA
Autotransformer: Maximum 360000kVA

Technical parameters:
Name: Three-phase dual winding with stabilization winding on-load voltage regulation oil immersion air-cold
power transformer
Type: SFZ-120000/230
Rated voltage: 230/34 /25kv
Rated capacity: 100000/120000kVA
Rated voltage ratio: 230± 8× 1.25%/34kV
Rated current: 301/2038A
Phase number: Three
Rated frequency: 50 Hz ± 3%
Connection set: Ynyn0(d11)
Voltage regulating method: Neutral point on-load Regulating
Short circuit impedance: 9.5%(100MVA)
Cooling mode: ONAN/ONAF
Winding insulation level:
Lightning impulse withstand voltage (kV\peak value) 1min Main frequency withstand voltage
(kV\RMS)
Full wave Chopped wave
High voltage side: 1050 1175 460
Neutral point of high voltage: (1050) ( 460 )
Low voltage side: 170 185 70
Neutral point of low voltage: 170 70
Insulation Level: A
Field strength between transformer winding turns is no more than 2kV/mm
Transformer loss (under 75)\no-load current and efficiency
No-load Loss: 92 kW According to IEC standard
Load Loss: 356 kW According to IEC standard
No-load current: 0.3 % According to IEC standard
Radio interference and corona
Under the Maximum phase voltage, corona is not visible from outgoing terminal in the night of clear day at
outdoor. Radio interference voltage is no more than 2500UV. Provide users with 500kV and below, 1000MVA and below series oil immersed power transformers. stay
While digesting the advanced technology at home and abroad, combined with the advanced technology at home and abroad and our company's experience in producing power transformers for many years, through
Through optimization and innovation, we have successfully produced a series of power transformers with low noise, low loss, low partial discharge and high short-circuit resistance,
Fully comply with and superior to national standards and International Electrotechnical Commission recommended standards

Reference:

1. Low loss and low noise
The core piece adopts the laminated form of full oblique joint, and the oil tank adopts composite shielding technology
Structural parts adopt measures such as reducing eddy current loss to solve the phenomenon of local overheating.
2. Safe and reliable operation
The electrical calculation adopts simulation software for positioning and quantitative analysis to ensure sufficient electrical strength and reliability
Low loss and effective suppression of local overheating;
The local discharge is kept below 50pc, and the temperature rise of transformer winding and oil surface are low
Above 5K of national standard, yield strength of winding conductor ≥ 180n / mm2, copper conductor, transformer
It has strong short-circuit resistance, which can ensure the long-term stable operation of the transformer.
3. Easy installation and maintenance
The transformer adopts core free structure, and all accessories are pre installed in the factory.
The transformer adopts maintenance free structure and technology, and the product maintenance is simple and convenient.
4. Fine workmanship
The coil is wound by vertical winding machine and equipped with tensioning device to ensure the axial direction of all windings
Winding force to improve the mechanical strength of winding.
The combined suit process is adopted to reduce the assembly tolerance of the body and improve the overall quality of the body
strength.
All high voltage electrodes and metal structures are rounded to avoid tip discharge



Our Best Service For You
Order Instructions
When you choose our company product, please offer following data:
Transformer model:                     
Rated capacity:                     kVA
Phase       :    Three-phase

• Single-phase

Frequency   :     50HZ

•  60HZ

Rated voltage ( H.V. / L.V. ):                
Tapping range: ±       ×       %
Insulation level: LI       AC       / LI       AC        kv
Veotor group:  Dyn11
             Yyno
             Other
Short-circuit Impedance:        %
Cooling method:  ONAN
                ONAF
Tapping method:  OLTC
                OCTC
                Other
Other requirement:                                            

Notes:

1. We also can design special products according to customer's particular requirements.
2. The final dimension is subject to outline drawing.

Thanks for choosing VILLE as your reliable partner and
please trust both of us will create a brilliant future!