E3YF400V02 Przekaźnik monitorujący napięcie 3-faz

Voltage monitoring relays are compact industrial automation devices used to protect electric energy receivers against the supply of electric energy with incorrect parameters such as too high or too low voltage, voltage unbalance between power phases, loss of voltage in one phase, incorrect sequence These devices, thanks to a wide range of settings, modes and delays, can be successfully used wherever it is very important to maintain a sufficiently high quality of supply voltage, e.g. with asynchronous machines, especially three-phase machines, when they are not powered by a frequency converter. factory equipped with one or two SPDT contacts without internally connected potential, which switch after detecting an irregularity, which can be used, for example, as a control for the electromechanical protection release coil, automatic lighting switch signal or an indicator that signals an anomaly to a freely programmable system.

Sample Applications

• Securing the direction of operation of electric machines
• Protection against phase loss and phase unbalance
• Detection of damaged light sources
• Automatic start of the generator sets