The filters can work as well as the isolation transformer, especially at high frequencies where computers and networks operate. Common mode noise can also be reduced by using noise filters, such as in the APC Smart-UPS series. The actual benefit of installing an isolation transformer is that common mode noise fed to the computer is greatly reduced. Therefore, isolation is not a function of the type of UPS, but rather a feature that can be added to any UPS.
#Audio isolator circuit series
The standby ON series by Oneac does provide galvanic isolation. For example, Exide, Unison, and ON-LINE (Pheonixtec) on-line models do not provide galvanic isolation.
Most on-line UPS units do not provide galvanic isolation, despite the widespread misconception that they do. Some UPS systems provide galvanic isolation. In fact, all galvanic isolation transformers only isolate the power wires, but pass the ground wire straight through. Many people mistakenly believe that galvanic isolation corrects noise on ground (earth) wiring. Therefore, the addition of another transformer is redundant. This is a requirement of international safety agencies in order to prevent shock hazard.
Physical isolation means that the output power wiring does not touch or connect to the input wiring.Īll personal computers already have galvanic isolation between the input power and the computer logic built in. Electrical isolation is accomplished using an isolation transformer. Galvanic isolation in power equipment refers to the fact that the output power circuit is electrically and physically isolated from the input power circuit.
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