ISOLATION TRANSFORMERS

Grant Transformers supplies high quality isolation transformer and innovative products with performance guarantees and flexible designs.

An isolation transformer is a transformer which is used to decouple two circuits, with the transformer coil windings designed for an input/output voltage of 240/240V for example. Isolation transformers allow an AC signal or power to be taken from one device and fed into another without electrically connecting the two circuits. Isolation transformers block transmission of DC signals from one circuit to the other, but allow AC signals to pass. They also block interference caused by ground loops. Galvanic Isolation is a superior and reliable solution with based on the benefits of capacitive de-coupling derived from winding the primary and secondary with an earth screen.

Isolation transformers with electrostatic shields are used for power supplies for sensitive equipment such as computers or laboratory instruments. Differential noise can magnetically couple from the primary to the secondary of an isolation transformer. This requires other measures, such as a filter, to block differential noise from the secondary of an isolation transformer.

Note: Grant Transformers Isolation 240/240V transformers include a grounded shield between the primary and the secondary windings as a standard accessory (E/S Models). This screen has a very high coupling to the input winding. Hence it reduces common mode noise on the 240V input side.