Isolation Transformer

QSG/SG three phase dry isolation transformer is a new generation energy-saving power transformer developed by the factory based on international similar products and combined with China's national conditions, from300VA to 1600kVA in line with international and national standards such as lEC439 and GB5226.

What is the Isolation Transformer?

An isolation transformer is a stationary device with isolated primary and secondary windings that keeps the two circuits separate physically and electrically. It transmits electrical energy between circuits by incorporating the magnetic induction mechanism, which uses a magnetic field to generate EMF in another circuit without affecting the frequency. Isolation transformers are used in transmission and distribution networks to step up and down voltage levels. The voltage and current capacities on both coils of an isolation transformer are equal.

What is the function of the isolation transformer?

The isolation transformer is constructed similarly to a standard core-type transformer, but with additional features. It incorporates electrostatic shields that completely separate the secondary winding from the primary winding, effectively suppressing noise and interference. Unlike isolation transformers, auto transformers—where the primary and secondary windings are electrically connected—cannot provide the same level of isolation. This is because auto transformers lack the necessary physical separation between the windings, which is crucial for true isolation.

What is the dry isolation transformer?

Dry isolation transformers are encased in a sealed, pressurized container or epoxy resin, which protects the core and windings. These transformers require minimal maintenance and are reliable, making them ideal for applications where safety is critical, such as in schools, hospitals, factories, and the chemical industry.

There are two main types of dry isolation transformers: cast resin and vacuum pressure. Cast resin transformers have their windings encapsulated in epoxy resin for protection. Vacuum pressure transformers, on the other hand, feature windings enclosed in a vacuum-sealed box with moisture protection to guard against the effects of moisture.

benefits of dry isolation transformers

Reliable and Safe Equipment

Isolation transformers offer robust protection against power issues for various electrical devices. Voltage fluctuations and sudden electrical surges can damage critical components, disrupting the normal operation of equipment. By isolating the equipment from the power source, isolation transformers help prevent such risks, thereby extending the lifespan and reliability of the equipment.

Reduced Presence of Power Surges

Power surges can inflict significant damage on electrical devices, even though these spikes in voltage are brief. Isolation transformers offer protection against such damage by providing galvanic isolation, which shields the equipment from these surges. By isolating the DC power lines, these transformers effectively prevent any potential harm that might result from power surges.

Prevention of Earthing Failures

One significant benefit of isolation transformers is their ability to prevent grounding failures. By using these transformers, there is no direct conductive link between the ground and the secondary side. Additionally, the Faraday shields incorporated in these transformers enhance their efficiency and performance.

The isolation transformer, just like typical transformers, is a non-moving device that transmits electrical energy from one circuit to another without requiring any physical contact. It works on the idea of magnetic induction, which uses a magnetic field to induce EMF in another circuit without affecting the frequency. Transformers are used in transmission and distribution networks to step up and down voltage levels. An isolation transformer is a type of transformer that provides electrical isolation between two circuits (primary and secondary) without modifying the secondary properties (voltage, current, and frequency levels).

QXG is a Chinese transformer manufacturer and supplier.  We can produce and supply pole  mounted transformers.  The use of advanced materials, such as high-efficiency core layers and conductive windings, helps reduce energy loss.  In addition, we have focused on transformer design, including improved cooling systems and insulation technology, further improving overall efficiency.

QXG welcomes your inquiry!