Презентация Siemens. Strength 7SJ61 - ABB REF 610 feeder protection онлайн

Содержание слайда: 7SJ61 - ABB REF 610 feeder protection Introduction REF 610 is a low-end non-directional feeder protection relay, it offers no control functionality REF 610 is most likely the successor of SPAJ 14x relays Since REF 610 is a low-end relay it should be compared to 7SJ60 series, anyhow this is the comparison to 7SJ61 With REF 610 feeder protection the REM 610 motor protection relay was introduced as well (same design, same housing)

Содержание слайда: Strength 7SJ61 compared to ABB REF 610 Hardware / Construction 7SJ61 provides: The option of 3, 8, 11 binary inputs Ref 610 provides only 2 or 5 binary inputs Two rear communication ports for SCADA and/or PC-operating-tool Ref 610 provides only one rear port, either for SCADA or PC-op.-tool A time synchronization port (IRIG B, DCF77) No such option for REF 610 The option to connect 1 or 2 RTD boxes for temperature measurement with a max. of 12 temp. sensors No such option for REF 610 (REM 610 must be used -> max. 6 RTDs) 4 programmable functions keys on the front No such option for REF 610 A large 4*20 characters text display REF 610 display size is only 2*16 characters

Содержание слайда: Strength 7SJ61 compared to ABB REF 610 Functions: protection 7SJ61 provides: the option of two separate earth short circuit functions (50N/51N and 50G/51G): one operates with the measured IE the other in parallel with the calculated 3I0 REF 610 provides only one 50N/51N function which operates with the measured IE current Disc Emulation for the Reset of IDMT (inverse curve) REF 610 provides a settable definite reset time, which is not the behaviour of a disc Inrush stabilisation via 2nd harmonic detection REF 610 provides only a pickup threshold increase for I>> stage (times 2) in case of switching on (the I>/Ip stage has to be blocked by I>> stage) Neg. Seq. protection (46, phase disc. protec.) with definite time and inverse time characteristic REF 610 offers only definite time characteristic

Содержание слайда: Strength 7SJ61 compared to ABB REF 610 Functions: protection 7SJ61 provides: Intermittent earth fault protection No such option for REF 610 Dynamic setting change function for O/C thresholds and delay times No such option for REF 610 High impedance restricted earth fault function (87N) No such option for REF 610 Motor protection as an option REF 610 offers no motor protection functions, a different relay (REM 610) has to be ordered

Содержание слайда: Strength 7SJ61 compared to ABB REF 610 Functions: monitoring / measurement 7SJ61 provides: Supervision functions as “current sum”, “current symmetry” No such options for REF 610 extended “Circuit breaker wear” monitoring via different methods: Σ Ix, with x=1..3 2P (remaining life time measurement, NEW principle) CB active time counter No such option for REF 610 Operational Measurement values as primary/secondary and unit values REF 610 provides only primary values Pulse Counter Inputs No such option for REF 610

Содержание слайда: Strength 7SJ61 compared to ABB REF 610 Functions: Control / user defined logic / communication 7SJ61 provides: Control functionality for CB and further switch elements; interlocking logic No such options for REF 610 User definable logic (e.g. for interlocking) via a graphic, easy-to-use logic editor No such options for REF 610 User definable logic with measurements and thresholds No such options for REF 610 SCADA communication standards IEC 61850 Profibus DP REF 610 does not support these protocols

Содержание слайда: Strength ABB REF 610 compared to 7SJ61 Hardware / Construction REF 610 provides: A wireless PC-operating-tool front interface (via the PC standard “IrDA”) No wireless option for 7SJ61 via the front (only RS 232 available) A quite little mounting depth of 149.3 mm 7SJ61 mounting depth is 206 mm A detachable plug-in (draw-out) unit No such option for 7SJ61; the whole device has to be moved

Содержание слайда: Strength ABB REF 610 compared to 7SJ61 Functions: protection, monitoring REF 610 provides: “Arc protection”: function detects arc situation in air insulated metal-clad switchgears; REF 610 local light detection sensors require an optional external arc light detection hardware No such option for 7SJ61 Trip circuit supervision (TCS), supported by relay hardware: no binary inputs are necessary No such option for 7SJ61, but: REF’s TCS is allocated to one fixed contact