Depending on the number of busbars and the type of synchronisation required, there are one or two sets of bus sensing transformers.
If dual bus synchronisation is required, the configuration of the sensing transformers is limited to single phase. In a single breaker system, the inputs are connected in either a single-phase or three-phase configuration.
The inputs can accept signals with up to 40% total harmonic distortion (THD). The bus voltage inputs are internally scaled by the CGCM unit according to its transformer configuration settings.
The busbar voltage detection inputs are labelled
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