The digital earth leakage relay is type A programmable electronic earth leakage protection equipment with two independent relays, the main output for checking the cut off device and performing the protection function and the pre-alarm relay for installation prevention and maintenance. Allows the setting and adjustment of all parameters required for complete protection and maintenance checking in the installation. A series of parameters may be set directly from the keypad (buttons) and by setting menus on the instrument itself.
For safe operation of the system, it is necessary to ensure that all circuits which a person comes into contact with, are equipped with a 30mA leakage protection!
If the ELR leakage current is set to a value higher than 30mA, additional leakage protection of 30mA must be used in the secondary circuits!