GE prolec VR-1 Installation, Operation And Maintenance Manual

Also see for VR-1: Installation operation & maintenance

GEH-7299A: Installation, Operation and Maintenance Manualfor Type VR1™ Single-Phase, Step Type Regulatorsprolec.energy/prolecge224.2 Load Bonus FeatureThe load-bonus feature provides a means of operating the regulator at increased load by decreasing the range of regulationin 1 1/4 percent steps. Load current may be increased up to 160 percent of rated current when operated at ± 5 percentregulation (with a limit of 668 amperes). Percentages of current ratings for various ranges of regulation are:Refer to nameplate for current ratings at load-bonus settings. To make adjustments, set the limit switches to the desiredregulation range by lifting the knob and moving it to the desired setting (Figure 12.).Note: The regulator does not need to be de-energized when making regulation adjustments.To reset the drag hands on the load-bonus position indicator, press the drag-hand reset button on the drag- hand reset buttonon the lower left corner of the GE-2994 Adapter Panel. Drag hands will reset automatically.Range of Voltage 10 8.75 7.5 6.26 5Current Rating 100 110 120 135 160Table 4. Percentages of Current Ratings for Various Ranges of Voltage RegulationFigure 11. CT Shorting Switch & PT Disconnect SwitchCT Shorting Switch Knife Switch CoverPT Disconnect SwitchWarning: Exposed Electrical Connections. Do not touch any exposed electrical connections unless the voltageregulator is de-energized or insulated tools or gloves are used. See instruction book for procedure to de-energizevoltage regulator.