Oil immersed three phase pad mounted transformers are widely used power equipment in distribution systems, mainly for converting medium-voltage electrical energy into low-voltage electrical energy to meet the power demands of industry, commerce and residents. It is compactly designed, easy to install and has excellent protective performance, making it suitable for outdoor environments.
Product Overview:
Oil immersed three phase pad mounted transformers are outdoor distribution equipment that convert high-voltage electrical energy into low-voltage electrical energy. They use mineral oil as the insulating and cooling medium, adopt a three-phase integrated design, and are directly installed on the ground base (Pad-Mounted). They are widely used in distribution systems of urban power grids, industrial zones, commercial centers, etc.
Core features:
Fully sealed structure
The fuel tank adopts a corrugated plate or expansion radiator design. The fuel volume automatically adjusts with temperature changes, requiring no maintenance and being moisture-proof and pollution-proof.
The protection grade usually reaches IP67, making it suitable for harsh outdoor environments.
High-efficiency insulation and cooling
The coil insulated with mineral oil and cast with epoxy resin has strong high-temperature resistance and short-circuit resistance.
Oil circulation natural cooling (ONAN) or forced cooling with a fan installed (ONAF) ensures controllable temperature rise.
Compact and safe design
Both the high-voltage side (such as 10kV/35kV) and the low-voltage side (such as 0.4kV) are equipped with built-in sleeves, which are connected through fully enclosed cable heads to avoid exposed conductors.
Safety devices such as pressure relief valves, oil level gauges and temperature monitors are all complete.
Intelligent options
It can be integrated with RTU remote terminal units to monitor data such as load, oil temperature, and fault alarms in real time, supporting the requirements of smart grids.
Typical parameters:
Oil immersed three phase pad mounted transformer capacity range: Small capacity can be customized to 50KVA, and large capacity can generally reach 2500KVA.
Voltage level: 6-35kv to 400v, customized services are supported.
Loss standard: Complies with IEC60076 energy efficiency standard.
Noise level: ≤55dB (depending on capacity).
Application scenarios:
Urban power distribution: Residential communities, street substations (replacing traditional power distribution rooms).
Industrial power supply: Provide stable low-voltage power for equipment in the factory area.
New energy access: Grid connection and transformation of photovoltaic and wind farms.