500kV 3상 변전소 변압기

SF-180000/500
This product is a step-down transformer used for the self-consumption of electricity in substations or hydropower stations, providing power load for low-voltage equipment or lighting. It is an important component of the station power system. This product is mainly used in ultra-high voltage converter stations, where its function is to step down the voltage from the 500kV grid to 35kV, supplying power to the 35kV station transformers.

Product Advantages
High-voltage, high-capacity step-down transformer.
Adopting a combination of self-cooling and air cooling, it offers flexible operation and reduces auxiliary losses.
The high voltage adopts an indirect outgoing line form, which is safe and reliable.
The product has a low temperature rise and a long service life.
High short-circuit resistance and high mechanical strength.
Application Scenarios
This product can be applied to UHV converter stations, enabling power input from the grid, which is then stepped down by this transformer before being connected to a 35kV station transformer to supply power to the station.
Technical Specifications

Product Model	–	SF-180000/500
Rated capacity	KVA	180000
Rated voltage ratio	KV	（525±2×2.5% ）/36
short-circuit impedance	%	12%
rated frequency	Hz	50
Connection group label	–	YNd11
Insulation level	KV	SI1175LI1550AC680-LI325AC140/ LI200AC85
cooling method	–	ONAN/ONAF
No-load loss	KW	≤65
load loss	KW	≤481
Temperature Rise Limit	K	Top oil layer: 44 Winding hot spot: 54
Noise (sound pressure level)	dB(A)	≤70