$$ \le 15 ,ms $$
This element operates without intentional time delay. 7sr511 manual
The relay models the thermal state of a cable or transformer. The manual includes the heating/cooling time constant formulas. Do not use standard overcurrent for motor protection without reading this section. $$ \le 15 ,ms $$ This element operates
The BE1-511 is a single-phase or three-phase overcurrent relay depending on the specific model variant. It utilizes a ruggedized microprocessor to sample analog current inputs via internal A/D (Analog-to-Digital) converters. Unlike electromechanical relays that rely on the physical interaction of magnetic fields to rotate a disc, the 7SR511 calculates the RMS (Root Mean Square) value of the current and compares it against programmed thresholds in real-time. Do not use standard overcurrent for motor protection
Configuration is typically performed via the front panel switches or DIP switches located behind the front cover, depending on the specific revision.