330kV 3상 부하 시 탭 체인저가 장착된 자동변압기

OSFSZ-360000/330
This product is a 330kV three-phase oil-immersed on-load tap-changer auto-transformer independently developed and designed by TBEA. It is one of the key equipment in 330kV voltage level power transmission and transformation projects. Its function is to connect power grids of different voltage levels and meet the needs of the power system by adjusting the output voltage.

Product Advantages
Compact structure, reduced footprint.
The high-voltage outgoing line device adopts a conventional layout, facilitating on-site installation.
The radiator is directly hung on the body, resulting in a low temperature rise during operation.
Safe and stable, with reliable operation.
Application Scenarios
This product can be applied to 330kV voltage level transmission and transformation lines, providing strong support for long-distance, cross-regional, and large-capacity energy transmission.
Technical Specifications

Product Model	–	OSFSZ-360000/330
Rated capacity	KVA	180000/180000/90000
Rated voltage ratio	KV	(345±8×1.25%)/121/35
short-circuit impedance	%	L-M: 23%(±5%) H-M: 18%(±3%) L-H: 25%(±5%)
rated frequency	Hz	50
Connection group label	–	YNyn0d11
Insulation level	KV	SI950LI1175AC510-LI325AC140 LI480AC200-LI325AC140 LI200AC85
cooling method	–	ONAN
No-load loss	KW	≤87
load loss	KW	≤705
Temperature Rise Limit	K	Top oil layer: 50 Winding hot spot: 60
Noise (sound pressure level)	dB(A)	≤67