Siemens 7UT51

Contents 7UT51 v3
8 PRIM-2330C
14.11 Use of Multiple Parameter Sets................................................................................................................151
14.12 Setting Date & Time..................................................................................................................................152
15 Operation Using a Personal Computer ..................................................................................... 153
15.1 Overview...................................................................................................................................................153
15.2 Programming the Relay............................................................................................................................154
15.3 Parameter Menu.......................................................................................................................................154
15.3.1 Configuration Menu ..................................................................................................................................154
15.3.2 Marshalling Menu .....................................................................................................................................156
15.3.3 Settings Menu Example for Transformer Protection.................................................................................156
16 Bench Testing .............................................................................................................................. 159
16.1 Required Test Equipment .........................................................................................................................159
16.2 Important Notes for This Procedure .........................................................................................................160
16.2.1 Annunciations and Setting Examples .......................................................................................................160
16.2.2 Verify Actual Programming of Trip Relays and Signal Relays ..................................................................160
16.2.3 Control of Protective Elements by Discrete Inputs during Testing............................................................160
16.3 Testing Transformer Differential Protection ..............................................................................................160
16.3.1 Ideal Through-Fault Test...........................................................................................................................162
16.3.2 Validate Metering......................................................................................................................................163
16.3.3 Three-Winding Transformer Differential Protection (7UT513 Only)..........................................................164
16.3.4 Testing the Differential Element 87T.........................................................................................................165
16.3.5 Testing Differential Setting of High-Set Element 87HS.............................................................................166
16.3.6 Testing Harmonic Restraint ......................................................................................................................167
16.4 Testing Restricted Ground Fault Protection (7UT513 Only) .....................................................................167
16.5 Branch Point Differential Protection Testing ............................................................................................. 171
16.6 Backup Overcurrent Time Protection Testing ...........................................................................................171
16.6.1 Testing the High-Set Overcurrent Stage...................................................................................................172
16.6.2 Testing the Definite Time Overcurrent Stage............................................................................................172
16.6.3 Testing the Inverse Time Overcurrent Stage ............................................................................................172
16.7 Thermal Overload Protection Testing .......................................................................................................173
16.7.1 Warning, Overload Current: Address 2405 (49-1) and 2505 (49-2) .........................................................174
16.7.2 Warning, Temperature: Addresses 2404, 2403 and 2402 (49-1) ;
Addresses 2504, 2503, and 2502 (49-2) ..................................................................................................175
16.7.3 49 Tripping: Addresses 2402 and 2403 (49-1), 2502 and 2503 (49-2).....................................................176
16.8 Tank Leakage Protection Testing (if Available)......................................................................................... 177
16.9 External Trip Function Coupling Testing...................................................................................................177
16.10 Putting The Relay Into Operation .............................................................................................................178
17 Installation and Servicing........................................................................................................... 179
17.1 Transport and Storage..............................................................................................................................179
17.2 Unpacking and Repacking........................................................................................................................179
17.3 Removing and Inserting the Relay Modules.............................................................................................180