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Servo-regulator for variable-transformers with AC motor drive
The NLR 7000 is a combined comparator and 3-phase servo-motor drive unit designed specifically for use with motorised variable-transformers in voltage regulating or stabilising systems. The required voltage level can be set internally through the digital control-panel or by using an external set-point source which can be a potentiometer or an analogue voltage or current signal. Motor voltage, frequency and response characteristics are set by using the digital control-panel.
The controller normally operates in automatic mode but it can be switched to manual for setting up purposes. It also has a zero-volts homing function for putting the system into a safe position, when required. Limit-switch inputs are also provided to ensure that the variable-transformer cannot be driven into its end-stops.
There are analogue outputs available, which provide signals for measuring the actual output voltage and current.
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Data Sheets
nlr7000_ds.pdf file size: 489kb
Instructions
nlr7000_td.pdf file size: 170kb
