Sf-25000/69/6.3 25mva 66kv Double-Winding Power Transformers with off-Circuit Tap Changer

• Customization: Available
• Application: Power
• Phase: Three
• Model NO.: sf-25000/69/6.3
• Core: Core-Type Transformer
• Cooling Method: Oil-Immersed Type Transformer
• Winding Type: Multi-Winding Transformer
• Certification: ISO9001-2000, ISO9001
• Usage: Power Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Brand: Ville
• Power: Hydroelectric (Power) Station
• Transport Package: The Accessories Packed in Plywood Cases,The Main B
• Specification: IEC60076
• Trademark: ville
• Origin: Ningbo China
• HS Code: 8504109000
• Production Capacity: 5000/Year

Product Description

Technical parameters:

Rated Capacity(MVA):	25
Voltage ratio HV(KV):	69
Voltage ratio LV(KV):	6.3
Voltage ratio HV Tapping Range(kv):	± 2 x 2, 5%
Connection symbol:	YND11
No-load Loss(KW):	26
No-load Current(%):	0.45
Full-load Loss(KW):	105.3
Impedance(%):	9

Reference Temperature					° C	75
No-Load Losses at Principal Tapping:					W	9.0 kW
Looses of Cooling Fan System					W	/
Insulation Levels (LI/AC):						LI325AC140/LI125AC55
No Load Current:				@ Un	% In	0.56
				@ 1.05 Un	% In	0.68
Sound Level:					dB	< 67
Short Circuit Impedance at Principal Tapping:				P/S	% Un	8~10%
				P/T	% Un
				S/T	% Un
Reference Temperature					° C	75
Top Oil Temperature Rise:					°C	51K
Average Winding Temperature Rise:					°C	64K
Insulation Resistance (Reference Temperature = 20°C):
HV/LV  /					Mohms	≥1000
HV/GR - LV/GR -					Mohms	≥1000

Our advantages:

Quality Assurance

--From the very beginning, VILLE ensures quality in every step to achieve the best quality.

 Experience Sharing

--With more than 30 years' experience in power industry, VILLE brings you an optimized solution.

 Global Service

--Wherever you are, VILLE global network will support and provide you with value.

 Quick Response

--In response to your needs without delay, VILLE  knows the value of your time.


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