xii 7SJ62 Instruction Manual
C53000-G1140-C121-1
9.3 Maintenance........................................................................................................................9-4
9.3.1 Replacing the Battery ..........................................................................................................9-4
9.3.1.1 Battery Replacement for flush mount and surface mount devices ......................................9-4
9.4 Troubleshooting...................................................................................................................9-7
9.5 Corrective Action/Repairs....................................................................................................9-9
9.5.1 Software Procedures...........................................................................................................9-9
9.5.2 Hardware Procedures..........................................................................................................9-9
9.6 Return................................................................................................................................ 9-13
10 Technical Data.................................................................................................................................10-1
10.1 General Device Data .........................................................................................................10-2
10.1.1 Analog Inputs and Outputs................................................................................................10-2
10.1.2 Power Supply.....................................................................................................................10-2
10.1.3 Binary Inputs and Outputs ................................................................................................. 10-3
10.1.4 Communications Interfaces ...............................................................................................10-4
10.1.5 Electrical Tests ..................................................................................................................10-6
10.1.6 Mechanical Stress Tests....................................................................................................10-8
10.1.7 Climatic Stress Tests.........................................................................................................10-9
10.1.8 Service Conditions.............................................................................................................10-9
10.1.9 Construction.....................................................................................................................10-10
10.2 Definite-Time Overcurrent Protection (50 and 50N Elements)........................................10-11
10.3 Inverse-Time Overcurrent Protection (51 and 51N Elements).........................................10-12
10.4 Directional Time Overcurrent Protection (67 and 67N Elements)....................................10-18
10.5 Dynamic Cold Load Pick-up Function (50c, 50Nc, 51Nc, 67c, 67Nc) .............................10-19
10.6 Inrush Restraint ...............................................................................................................10-19
10.7 Sensitive Ground Fault Detection (64, 50Ns, 67Ns)........................................................10-20
10.8 Negative Sequence Protection (46).................................................................................10-22
10.8.1 Definite–Time Elements (46-1 and 46-2).........................................................................10-22
10.8.2 Inverse–Time Elements (46-TOC)...................................................................................10-22
10.9 Motor Starting Protection (48)..........................................................................................10-27
10.10 Thermal Overload Protection (49) ...................................................................................10-28
10.11 Start Inhibit for Motors (66/68)......................................................................................... 10-30
10.12 Voltage Protection (27 and 59)........................................................................................10-31
10.13 Frequency Protection (81 Over-Frequency and Under-Frequency) ................................10-32
10.14 Breaker Failure Protection (50BF)...................................................................................10-33
10.15 Automatic Reclosing System (79M).................................................................................10-34
10.16 Fault Location..................................................................................................................10-35
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