TELE offers voltage monitoring for complex multi-wire networks. This means that also networks with strongly non-symmetric loads and with disruptive influences, TELE monitoring relays carry out their reliable work. And they do so not only in Europe for the usual three-wire networks with or without zero cable 3(N)~ 400/230V, but also for global applications with different voltage levels and multi-wire systems that are switched in other ways.
A major application area for three-phase voltage monitoring is building technology. Here, it is important to monitor the height of the individual phase voltage in order to initiate emergency lighting with Undervoltage and to protect consumption points from overvoltage. With the TELE devices specialized in these fields, the deviation of the phase voltage is set directly and the device switches off when at least one of the phases leaves the permissible range. The ENYA and KAPPA series are designed for contact-safe installation in the installation distributor. To simplify the wiring, most devices take their auxiliary energy from the current circuit measured.
The GAMMA industry series focuses on the monitoring of the supply voltage of the motor. Damage can be prevented by switching off the motor in the event of network errors. Over- and Undervoltage, as well as asymmetric errors, are also reliably detected in complex industry networks. TELE monitoring relays are immune to voltage retroactivity of three-phase loads.