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Power Quality Measurement & Digital Fault Recording
Field of application
In view of the growing number of factors with a disturbing influence on power systems and the ever increasing sensitivity of devices and installations on the consumer side, simple monitoring criteria such as undervoltage or overcurrent are no longer adequate. Reliable registration of all the relevant processes within the electrical power system calls for constant observation of a wide variety of derived parameters, such as individual harmonic content, system unbalance and interharmonics, and the swift identification of even slight deviations from the norm.
Modern power system monitoring equipment should be capable of comprehensively logging the mode of operation and the interaction of all the component parts of a power supply system.
Only comprehensive and continuous monitoring of the entire power system enables all resources to be used purposively and effectively for the restoration of system operation should a disturbance occur.
The recorded data can also be used as the basis for extending power networks and optimising primary and secondary technology. Not only the security of supply, but also the quality of electrical power is important for the smooth operation of electrical equipment in industrial, medical and electronic data processing environments.
Because of this, power quality is increasingly being brought into play as a price criterion. So it is imperative for energy providers and customers alike to monitor and log power quality constantly.
The need to record a very large number of electrical parameters simultaneously and continuously over sometimes very long periods of time places extreme demands on measuring equipment.