Dual Voltage Distribution Transformer

Zhejiang Jiangshan Hengli Electrical Co., Ltd. is one of the leading manufacturers and suppliers of dual voltage distribution transformer in China. If you're going to wholesale durable dual voltage distribution transformer made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.

This is a dual voltage distribution transformer,the rated power of the transformer is 630kVA, the primary voltage is 11kV, the secondary voltage is 6.6kV and 0.4kV, they can be switch to use either of them. The transformer is equipped with 5 tapping position NLTC.

A dual voltage distribution transformer is a flexible power distribution unit built with split primary or secondary windings, allowing it to operate at two distinct voltage ratings without changing its kVA capacity.By re-configuring terminal wiring (series connection for higher voltage, parallel for lower voltage), it adapts to two input grid voltages or delivers two different output voltages from one unit. For example, it can switch between 10kV/20kV primary or supply 120V/240V secondary simultaneously.

It eliminates the need to replace transformers when grid voltage upgrades or mixed-load power demands arise. Widely used in utility grids, industrial parks and rural power projects, it complies with IEC standards, features low losses and strong short-circuit resistance, cutting procurement and replacement costs significantly.

A dual voltage distribution transformer is equipped with two identical split primary windings. Operators can switch working voltage by adjusting external terminal jumpers. When windings are connected in series, it adapts to higher input voltage; parallel connection suits lower voltage. The transformer retains full rated capacity under both setups. The secondary winding stays unchanged to supply stable output voltage, with no internal modification needed.

Strong voltage adaptability: Its split windings can be rewired in series or parallel to fit two different grid voltages.

Lower overall procurement & inventory cost: Utilities and factories only purchase and store one model instead of multiple single-voltage units, cutting purchasing expenses, warehouse space and capital occupation.

Flexible for project changes: It can stay in service after grid renovation without replacement, reducing construction downtime.

Wide application compatibility: It maintains full rated kVA capacity under both voltage modes.

Dual voltage distribution transformers come with several practical constraints.

First, voltage switching relies on correct terminal wiring; improper connection will trigger overheating or equipment failure.

Second, the available two voltage options are fixed, so it cannot adapt to arbitrary voltage standards.

Third, compared with single-voltage models of identical capacity, its internal winding structure is more complex, leading to slightly higher manufacturing costs. Besides, the terminal block requires extra space, and operators must receive professional training to reconfigure wiring safely.

As a direct Dual voltage distribution transformer manufacturer we provide:

• Direct manufacturer pricing: Factory-direct (Best price for 100% upfront).Skip the middleman and the long wait.
• MOQ: 1 unit – flexible cooperation
• Large stock available, fast delivery
• Service: No bidding, no delays, direct deal for private projects.
• Quality tested. Ready for your projects in your country.
• Focused on Chinese power transformer supply with stable quality and compliance with multiple international standards.
• Power utilities, installers, and EPC contractors are welcome for long-term cooperation.

We pack all transformer accessories into plywood cases. These boxes come with heavy-duty iron frames and non-fumigation plywood panels. The main transformer unit will be shipped bare and securely fixed inside the container. For large-sized transformers, we'll attach impact recorders to track the G-force data during ocean shipment.

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