SIPROTEC 4 7SJ63 Multifunction Protection Relay - Siemens

5 Overcurrent Protection / 7SJ635Selection and ordering dataDescription7SJ63 multifunction protection relayDesignationBasic versionANSI No. DescriptionControl50/51 Time-overcurrent protectionI>, I>>, I p, reverse interlocking50N/51N Earth-fault protection50N/51NOrder No.I E>, I E>>, I EpInsensitive earth-fault protection via1)IEE function: I EE>, I EE>>, I EEp49 Overload protection (with 2 time constants)46 Phase balance current protection(negative-sequence protection)37 Undercurrent monitoring47 Phase sequence59N/64 Displacement voltage7SJ63¨o ¨¨¨¨¨ ¨¨¨¨50BF Breaker failure protection74TC Trip circuit supervision4 setting groups, cold-load pickupInrush blocking86 Lockout F An V, f 27/59 Under-/overvoltage81 O/U Under-/overfrequency F En IEF V, f 27/59 Under-/overvoltage81 O/U Under-/overfrequencyIntermittent earth faultP En Dir 67/67N Direction determination for overcurrent, phases and earth47 Phase sequence F Cn Dir V, f 67/67N Direction determination for overcurrent, phases and earth27/59 Under-/overvoltage81O/U Under-/overfrequency F Gn Dir IEF 67/67N Direction determination for overcurrent, phases and earthIntermittent earth faultP CDirectional Dir 67/67N Direction determination for overcurrent, phases and earthearth-fault 67Ns Directional sensitive earth-fault detectiondetection 87N High-impedance restricted earth faultn F D 2)Directional Dir IEF 67/67N Direction determination for overcurrent, phases and earthearth-fault 67Ns Directional sensitive earth-fault detectiondetection 87N High-impedance restricted earth faultn Intermittent earth fault PD 2)Directional 67Ns Directional sensitive earth-fault detectionearth-fault 87N High-impedance restricted earth faultdetectionn F B 2)Directional Motor V, f 67Ns Directional sensitive earth-fault detectionearth-fault 87N High-impedance restricted earth faultdetection 48/14 Starting time supervision, locked rotorn 66/86 Restart inhibit27/59 Under-/overvoltage81O/U Under-/overfrequency H F 2)n Basic version includedV, f = Voltage, frequency protectionDir = Directional overcurrent protectionIEF = Intermittent earth fault1) Only with insensitive earth-currenttransformer when position 7 = 1, 5, 7.2) For isolated/compensated networksonly with sensitive earth-currenttransformer when position 7 = 2, 6.5/146continued on next pageSiemens SIP · 2006