The Wega 1 is a three-phase voltage detecting system that displays the medium-voltage states phase-selectively. The built-in display test function at the front enables verification of the display of the installed and de-energised unit. For connection, either shielded or unshielded cables with flat connectors or system connectors (AMP) can be used.

The following medium voltage conditions are displayed:

	Voltage present	Threshold values for voltage presence indication: 0.1 — 0.45 x Vnom Installation note: The voltage signal is too low when operating the system at nominal voltage. The cause is usually the selected adjustment capacitor which is too large or the operation of the switchgear at a nominal voltage that is lower than originally envisaged.
	Voltage present and integrated maintenance test passed	The current flowing through the display unit meets the current monitoring requirements of IEC 61243-5 and IEC 62271-213. A maintenance test is not necessary due to the continuous monitoring.
	Voltage present and integrated maintenance test passed; voltage signal, nonetheless, is too high	Installation note: Voltage signal too high. The cause is usually the selected adjustment capacitor which is too small, an earth fault or the operation of the switchgear at a nominal voltage that is higher than originally envisaged.
	Voltage not present	When all poles of the system are switched off, all symbols are switched off. Voltage present <0.1 x Un.

The built-in display test function on the front allows the display to be tested when installed and de-energized. Shielded or unshielded cables with compact plugs (AMP) can be connected to the fault direction indicator.