Siemens SIPROTEC 7SJ62 Instruction Manual page 14

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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7SJ62 Instruction Manual
C53000-G1140-C121-1