Detail Argus 1 Reyrolle 7SG11
Features • IDMTL phase overcurrent stage ( 50/ 51) • 3 DTL phas e overcurrent stages ( 50) • IDMTL earth - fault stage ( 50N/ 51N) • 3 DTL earth - fault stages ( 50N) • 2 instantaneous and DTL SEF/ REF stages with harmonic rejection ( 50N) • Trip circuit supervision ( 74TC) • Circuit breaker failure protection ( 50BF) • Single pole, three pol e and four pole variants • True RMS measurement • Status inputs with independent pick - up and drop - off timers and logic inversion to reduce scheme engineering • Flexible supply voltage ranges • Low AC/ DC burden • Eight independent settings groups • Self, hand and elect rical reset contacts • Extensive fault, sequence of event and disturbance recorder • IEC60870 -5- 103 fibre - optic communications • Modbus RTU communications • Continuous self - supervision of operation and power supply
