Pad Mounted Transformer, 300 MVA

This 300 MVA Pad-Mounted Transformer (P/N 10186L1) is a high-performance, liquid-immersed power transformer engineered for demanding utility and industrial applications. Designed with a focus on reliability, efficiency, and operational flexibility, this unit delivers robust performance in critical power infrastructure environments.

Built for long-term service in high-load conditions, this transformer features an optimized magnetic core and winding structure that ensures excellent mechanical strength and electrical stability. The design supports both natural and forced oil cooling, making it adaptable to a wide range of operating scenarios, from continuous base-load duty to peak demand conditions.

Specifications are summarized below:

High Reliability

Proven liquid-immersed design for long-term operation
Strong short-circuit withstand capability
Optimized winding and core structure for mechanical stability

High Efficiency

Low no-load and load losses
Optimized magnetic core design
Reduced lifecycle operating cost

Flexible Cooling Configuration

ONAN / ONAF cooling available
Designed for high-load and continuous operation scenarios

Application Versatility

Power generation plants
Grid substations
Data centers and hyperscale facilities
Renewable energy integration (wind / solar / BESS)

Electrical Parameters

Item	Specification
Rated Capacity	300 MVA
Voltage (HV/LV)	230 kV / 33 kV
Frequency	50 / 60 Hz
Vector Group	YNd11 (typical)
Cooling Method	ONAN / ONAF
Impedance	~15% (typical)

Performance Data

Item	Value
No-load Loss	≤ 200 kW (typical)
Load Loss	~1,300–1,500 kW
Temperature Rise	≤ 65°C (winding)
Insulation Level	Up to 1050 kV BIL (HV)
Short-circuit Duration	2 seconds

Mechanical & Physical Data

Item	Value
Overall Dimensions (L × W × H)	~19,300 × 5,900 × 7,700 mm
Transport Weight	~94,000 kg
Total Weight	~150,000 kg
Tank Type	Sealed / Conservator type
Cooling System	Radiator banks