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Samples in periodicals archive:
The heightening use of electrical machinery, automation systems, computers, security systems and other sensitive electronic equipment will bolster sales of products such as voltage regulating transformers, advanced switchgear systems and power circuit breakers capable of controlling and monitoring incoming electric power.
Engineering and Technical Support: The Y3 and Y4 120 volt busses deenergized during the March 13, 1993 event because the input breaker trip setpoints to the associated voltage regulating transformers were improperly set below the vendor established setpoints.