How to use isolation transformer? What are the classifications of isolation transformers? This piece will provide the solution you're seeking!
How to use isolation transformer
1. Connect the input terminal of the isolation transformer to the 380V power supply. Connect the output terminal (660V) to the power input terminal of the equipment needed.
2.Switch on the energy and utilize it as usual.

Classification of isolation transformers
1. Standard Isolation Transformer
Standard isolation transformers lack a direct electrical link between the windings of the primary and secondary sides.
Hence, irrespective of the transformation ratio, general power transformers serve the purpose of potential isolation. An isolation transformer can isolate higher potential differences.
Commonly utilized in AC power lines and communication lines.
An isolated ground loop efficiently eliminates common-mode interference in low-frequency and audio ranges.
Nonetheless, it fails to eliminate differential mode disruption. Transformers for signal and pulse isolation are extensively used in the spectrum from audio to video.
It stops interference and performs functions like connecting AC, separating DC parts, and matching impedance.
The isolation transformer has distributed capacitance between its primary side and secondary side. This reduces the ground loop impedance.
When for some reason, the potential of point B increases and interference voltage appears. Common-mode interference of high frequency can link from the primary side to the secondary side.
2. Shield isolation transformer
Shielded isolation transformers insert a metal shield between the primary and secondary sides of the isolation transformer.
The shielding layer separates the capacitance between the primary and secondary sides into two parts, providing protection.
The metallic protective layer is linked to the transformer's ground terminal. This helps prevent interference from the primary side reaching the secondary side.
To prevent interference, connect the metal layer to the main input of the transformer. This will stop any disturbances from the primary side affecting the secondary side. This means that we will stop any disturbances or disruptions before they can affect the secondary side.
The metal layer acts as a barrier, blocking any unwanted signals from passing through to the secondary side. This helps to ensure that the transformer operates smoothly and efficiently without any outside interference.
We use a special transformer with extra protection to reduce interference on one side. This additional layer of shielding helps to minimize differential-mode noise.
Connect another shield to the common-mode interference reference plane or ground to reduce common-mode noise.
3. Triple shielded isolation transformer
A triple-shielded isolation transformer provides higher isolation requirements when needed.
The connection of the three layers of protection depends on the transformer's setup and grounding. The transformer's configuration decides the connection of the protection layers. The grounding of the transformer connects the protection layers.
Typically, you place the transformer on the divider of the equipment shelf or the divider wall of the shielded room. Next, you must link the rack to the safety ground of the equipment. Insulating tubes safely disconnect and protect the input power.
The above is an introduction to the use and classification of isolation transformers.