250 kVA 10 kV Oil-Immersed Transformer No Excitation

Product overview

250KVA 10KV Oil Immersed Transformer - Core Outdoor Power Distribution Equipment

Most power distribution equipment in the industry suffers from poor voltage adaptability, high losses under load fluctuations, and is prone to insulation aging and leakage in outdoor conditions. Purchasers often face challenges such as cumbersome equipment matching, complex voltage regulation operations, and high long-term maintenance costs. This 250KVA 10KV Oil Immersed Transformer features optimized heat dissipation and sealing structures, allowing for flexible integration with High And Low Voltage Switchgear and Box Type Substations to complete power distribution layouts. Compared to Dry Type Transformers, it offers stronger outdoor tolerance and overload capacity, and is compatible with Combined Photovoltaic Substations and Electric Power Converters for voltage boosting and bucking requirements. The voltage level can be adjusted even when the equipment is not in operation, providing stable output of standard low-voltage power, reducing line losses, and extending the service life of the entire power distribution system. It is widely used in industrial parks, distributed photovoltaic power stations, and urban community power distribution scenarios.

This equipment adopts a fully sealed corrugated oil tank structure, with insulating oil isolating water vapor and dust to prevent outdoor leakage faults. The non-excitation voltage regulation structure simplifies the operation process, allowing voltage level switching without the need for professional live-line workers. Compared to dry-type equipment of the same capacity, it has higher heat dissipation efficiency, adapts to short-term overload conditions of photovoltaic power station output fluctuations, and can stably suppress power harmonics when operating in conjunction with an Electric Power Converter . The equipment can be installed independently on a pole or integrated into a Box Type Substation , achieving integrated protection, metering, and power distribution when paired with a complete High and Low Voltage Switchgear. In Combined Photovoltaic Substations, it serves as the core transformer unit, completing the high-voltage grid connection after photovoltaic DC power conversion. The entire unit strictly adheres to international Energy Efficiency standards, with low operating noise and controllable losses. Long-term use can reduce electricity costs. It is compatible with the voltage standards of multiple overseas power grids, meeting the bulk procurement needs of industrial, new energy, and civil infrastructure projects.

Installation & maintenance notes

• Voltage adjustment must be performed with the power completely off. After switching gears, retest the DC resistance to ensure stable contact before restoring power.
• If used with Combined Photovoltaic Substations, periodically monitor the Electric Power Converter output current to prevent long-term overload damage to the windings.