Zhejiang Jiangshan Hengli Electrical Co., Ltd. is one of the leading manufacturers and suppliers of step down distribution transformer in China. If you're going to wholesale durable step down distribution transformer made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.
Looking for a stable step down distribution transformer for medium-voltage industrial and substation projects? This is a step down distribution transformer,The rated capacity of the transformer is 500kVA. This 500kVA oil-immersed step down distribution transformer is built to convert 33kV high grid voltage down to usable 6.6kV power, widely adopted in mining, factory substations and regional power distribution networks worldwide.
This unit uses ONAN natural oil cooling, comes with ±2*2.5% NLTC tap range on the 33kV primary side, and follows the Dyn11 vector group standard to cut harmonic interference for smooth equipment operation. Every core part is made with solid copper windings, produced by precise coil winding machines to keep steady electric output and good heat resistance during long-hour running.
All internal coils adopt paper-covered conductors to boost insulation strength. We use a fully sealed corrugated oil tank that holds oil expansion without letting rain, dust or damp air inside. This sealed design slows internal aging a lot, so the transformer can work reliably in hot, humid or dusty outdoor sites for decades.
Application Case
We shipped this 500kVA 33/6.6kV step down distribution transformer to a mineral processing plant in South America for its on-site substation upgrade. The factory's grid supply only provided 33kV input, but its crushing machines, ventilation fans and conveyor motors all needed stable 6.6kV medium voltage to run.
Before switching to our transformer, the old model often caused voltage drops during peak mining hours, triggering frequent machine shutdowns and lowering daily output. After installing our sealed copper-winding step down distribution transformer, voltage fluctuation was fully controlled within the tap adjustment range. This same model also serves small wind farm auxiliary power stations and chemical plant internal distribution systems across 20+ countries.
Product & Service Advantages
All our step down distribution transformers meet global standards including IEC, ANSI/IEEE and DOE. Each finished unit goes through strict factory acceptance testing (FAT) before delivery to avoid hidden performance faults.
We support fully modular customization: adjust capacity, load,voltage ratio, cooling style and tank structure to match your unique site load and environmental needs. Our team offers full one-stop support: early project consulting, customized manufacturing, on-site installation guidance, commissioning and long-term after-sales service.
Whether you run a mining site, industrial park or local power substation, this durable step down distribution transformer delivers steady medium-voltage power with low long-term maintenance cost.
FAQ
Hot Tags: step down distribution transformer, China step down distribution transformer manufacturers, suppliers, factory
