The OMS 600 is a fixed installed system for continuous partial discharge (PD) monitoring. The online PD monitoring system consists of three or four coupling capacitors (3 phases + neutral). A short coaxial cable connects each coupling capacitor to the channel acquisition unit, which is linked by a fiber optic cable to the server. The OMS 600 can easily be extended to monitor a high number of high-voltage machines.
The high sensitivity of this permanently-installed monitoring system is based on advanced technology. Partial discharge sources are separated by measuring synchronously at each channel and by using methods like 3PARD (3-Phase Amplitude Relation Diagram) and 3CFRD (3-Center Frequency Relation Diagram).