ABB REF 610 Technical Reference Manual

Also see for RELION REF610: Technical reference manual Technical reference manual Operator's manual Product guide

Contents

ABB REF 610 Technical Reference Manual Manual pdf 19 page image

195. Technical description5.1. Functional description5.1.1. Product functions5.1.1.1. Protection functionsThe protection functions of REF 610 with their IEC symbols and IEEE devicenumbers are presented in the table below:Table 5.1.1.1.-1 IEC symbols and IEEE device numbersFunction description IEC symbol IEEE Device No.Three-phase non-directionalovercurrent protection, low-set stageI> 51Three-phase non-directionalovercurrent protection, high-set stageI>> 50/51Three-phase non-directionalovercurrent protection,instantaneous stageI>>> 50Phase discontinuity protection ΔI> 46Three-phase thermal overloadprotection for cablesθ> 49Non-directional earth-faultprotection, low-set stageI 0> 51NNon-directional earth-faultprotection, high-set stageI 0>> 50N/51NArc protection ARC 50/50NLCircuit-breaker failureprotectionCBFP 62BFAutomatic reclosing 0→1 79Lockout relay 86For descriptions of the protection functions, refer to Section 5.1.4.11. Technical dataon protection functions.5.1.1.2. InputsThe relay is provided with four energizing inputs, two optional light sensor inputs,two digital inputs and three optional digital inputs controlled by an external voltage.Three of the energizing inputs are for the phase currents and one for the earth-faultcurrent.The functions of the digital inputs are determined with the SGB switches. Fordetails, refer to Section 5.2.1. Input/output connections and Table 5.1.4.10.-7,Table 5.2.1.-1 and Table 5.2.1.-5.Feeder Protection RelayTechnical Reference ManualREF 610REF 6101MRS755310