Siemes 7SR12 Argus

Protection Function Packages | | Standard version – Included in all models 27/ 59 Under/ overvoltage 37 Undercurrent 46BC3) Broken conductor/ load unbalance 46NPS3) Negative phase sequence overcurrent 47 Negative phase sequence voltage 493) Thermal overload 50BF3) Circuit breaker fail 51V3) Voltage dependent overcurrent 59N Neutral voltage displacement 60CTS3) CT supervision 60VTS3) VT supervision 64H High Impedance REF 67/ 50 Directional instantaneous phase fault overcurrent 67/ 50G 67/ 50N Directional instantaneous earth fault 50SEF2) Directional instantaneous sensitive earth fault 67/ 51 Directional time delayed phase fault overcurrent 67/ 51G 67/ 51N Directional time delayed earth fault 67/ 51SEF2) Directional time delayed sensitive earth fault 81HBL23) 2nd Harmonic Block/ Inrush Restraint 74T/ CC Trip/ Close circuit supervision 51c3) Cold load pickup Programmable logic Standard version – plus 79 Autoreclose Additional Functionality | No Additional Functionality