Can be connected with various switching devices REF545

Measurements Bars 3 freely programmable bars are provided for a quick inspection of the switchgear load situation. The three bars are marked M1, M2, and M3.

Each bar is composed of twelve LEDs: ten green and two red. The ten green LEDs are normally dedicated to display between 0% and 100% of the nominal value of the configured measurement, each LED corresponding then to 10% of the nominal value. The two red LEDs indicate an overload condition of 20%.

The measurement displayed by the bar is set with the Operating Tool. M1..M3 reference text can be configured and displayed on the display is display´s graphical side. Text There is a textual part of the LCD, which shows the menu, the measurement values, the events and any information accessible through the menu structure. SLD view The SLD view is the graphical part of the LCD.

This part shows the single line diagram of the switchgear. The status of the primary objects is dynamically updated after every operation: for example, if the circuit breaker has been opened, the SLD view will reflect it. Open CB for Fast Opening When pressed simultaneously with the normal open button, the Open CB button allows the fast opening of the circuit breaker independently from the selected control mode.

This feature must be enabled in the unit with the Operating Tool. Moreover, it is also possible to have several, completely user defined command buttons on the HMI. These virtual push buttons are available from the dedicated HMI menu. During REF 542plus configuration, the user defines what command buttons are required.

Typical examples might be: start of a transfer switch or of any other automation sequence, fault recorder activation, start of a load shedding sequence and so on. Due to the user defined command buttons, REF 542plus automation capabilities can cope with any requirements.