Three-phase Oil-immersed Power Transformer for Power Industry

Attributes Description Documentation Resource Library

Key attributes

Brand	ROCKWILL
Series	S
Rated Voltage	35kV
Short circuit impedance	6.5-10%
Vector group	Yd11 / YNd11

Description

Customizable three-phase oil-immersed power transformer featuring cold-rolled silicon steel core and copper windings with optimized oil-oriented cooling for reduced temperature rise. Barrel-type or bell-type oil tank with finned radiator ensures reliable leak-free operation. On-load tap changer available for voltage regulation. Applicable to power industry, new energy, industrial manufacturing, infrastructure, and public services.

Parameter

Parameter	Value / Range
Rated Voltage (HV)	35~38.5 kV
Rated Voltage (LV)	3.15 / 3.3 / 6.3 / 6.6 / 10.5 kV
Rated Capacity	6300~31500 kVA
Rated Frequency	50/60 Hz
Phases	3
Vector Group	Yd11 / YNd11
Short-circuit Impedance	6.5-10%
Regulation Method	Off-circuit tap / On-load tap changer
Winding Type	Double winding
Cooling Method	ONAN

Operating condition

Working temperature：-25℃~40℃
Relative humidity: ＜90% (25℃)
No corrosive gas, no obvious dirt, etc.
Altitude: ＜1000m
Installation place: Without corrosive gas, dirt and so on
Special conditions: customized products are available

Application Field

Power Industry
New Energy Industry
Industrial Manufacturing Industry
Infrastructure and Public Services Industry

Negotiable

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The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.