The isolating transformer PCE-P17I is used when signals must be galvanically isolated from each other. For example, the Isolating Transformer PCE-P17I separates interconnected masses. When transducers or transmitters don’t have an isolating transformer, the masses are oftentimes interconnected. The consequence of this is that measuring errors appear due to signal interferences. The isolating transformer prevents this problem. The isolating transformer is often applied in order to use both of the PCE-P18’s power signals.