Zhejiang Jiangshan Hengli Electrical Co., Ltd. is one of the leading manufacturers and suppliers of 11kv three phase oil immersed distribution transformer in China. If you're going to wholesale durable 11kv three phase oil immersed distribution transformer made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.
If you are looking for a small, reliable outdoor distribution transformer for villages, small workshops or remote power grids, our 75kVA 11kV three Phase oil immersed distribution transformer is a very practical choice. We finished a full batch of this model and delivered all units to Angola back in 2017, and these transformers are still running stably on local power lines after many years.
This 11kV three Phase oil immersed distribution transformer follows IEC60076 international standard. Its main job is to step down 11kV high voltage from overhead power lines to standard 400V low voltage that homes, small machines and public facilities can safely use. The biggest difference from regular transformers is its fully sealed tank design without an oil conservator on top.
We use pure copper for all internal windings. Copper carries electric current with less energy waste and heat. Combined with S11 low-loss silicon steel core, this transformer only has 0.18kW no-load loss and 1.25kW load loss when fully loaded. It saves a noticeable amount of electricity every day compared to old low-efficiency transformer models. The cooling type is ONAN natural oil air cooling, no extra fans needed, less noise and fewer parts that can break down.
Design Features
For local grid voltage adjustment, we fit NLTC tap changer with ±2*2.5% tapping range. When the incoming 11kV grid voltage goes too high or too low, workers can adjust taps after cutting off power to fix output voltage. The vector group is Dyn11, which balances three-phase power well and works great when loads are not evenly distributed. 4% impedance design also gives strong protection against sudden short-circuit shocks.
Every part inside this 11kV three Phase oil immersed distribution transformer uses carefully checked high-quality raw materials and standard factory components. We run full performance tests for each unit before delivery, covering loss test, insulation test, oil tightness test and tap switch test. Clients in remote areas like Angola love this model because it barely needs frequent maintenance. The fully sealed structure stops dust, rain and humid air from getting inside, so field teams do not need to change oil or clean breather parts every few months.
Application Fields
The 11kV three Phase oil immersed distribution transformer fits many common power supply scenes perfectly: rural village power grid upgrade, small agricultural irrigation stations, manufacturing workshops, remote telecom base stations and residential community small substations. For areas with limited maintenance staff and bad outdoor weather, this sealed 75kVA transformer cuts your long-term operation cost clearly.
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