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The relay type SVR is intended for the protection of electric lines and machines against voltage variations.
The relay SVR features the following principal characteristics:

• three-phase measuring circuit for the line voltage, with star or delta connection;
• measuring circuit, provided with a band pass filter, for the residual voltage;
• protection functions and final relays completely programmable by the user;
• direct read-out of all the input quantities by means of digital display on the front panel;
• counting the number of operations for each function;
• storing the values of input quantities corresponding to the last operation;
• optional digital input circuit, to perform adaptive protection schemes;
• serial communication circuit;
• continuous monitoring of internal circuits.