CPC 100 - Multi-functional Primary Test System - OMICRON electronics GmbH - #32

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CPC 100 - Operating Principle ■ Internai éléments of the CPC 100 These key components make the CPC 100 outstanding: > Control unit > Power electronics unit > Multiple range transformer > Measurement unit > Interface Each of the above is engineered to operate effectively in harsh electrical and environmental conditions associated with the testing of HV apparatus. Control unit The "brain" of the CPC 100 consists of two signal processing units and an embedded computer providing: > Application knowledge for all of the incorporated testing procedures > Up-to-date, practical and efficient measurement functions > Digital test voltage or current generation > Enables independence from the mains signal quality > Enables independence from the mains frequency > Assures a high level of reproducibility of measurements > Safety functions such as ground connection checks, self diagnostics, overload, overcurrent and overtemperature management > Reduces the risks to the user and the test objects > Prevents damage to the CPC 100 and its accessories > Data storage using onboard flash memory and external USB memory > Saves time through its automatic storage and reporting functions Power electronic unit Adjustable and controlled voltage or current source with variable frequency > Supplied from a single phase wall outlet (110 / 230 V, 50 / 60 Hz) > The CPC 100 can be used everywhere in the substation or power plant > DC intermediate circuit allows reactive power to be generated inside the unit > As only active power is taken from the supply socket, less current has to be taken from the wall socket > Longer injection times are possible > Generation of voltage or current with variable frequency > Avoids mains frequency related noise > Performs accurate measurements in noisy environments > Tests apparatus with different frequency rating (for example, for factory tests in the supplier's home country) > Generates different periodic wave shapes (sine wave, sawtooth, etc.) > Performs special measurements (polarity verification, IEC 61850 merging unit and channel detection) 32