GE T60 Instruction Manual page 8

8 COMMISSIONING
9 THEORY OF
OPERATION
10 MAINTENANCE
viii
7.2 Targets menu ................................................................................................... 7-6
7.2.1 Target messages...................................................................................................................7-7
7.2.2 Relay self-tests .......................................................................................................................7-7
8.1 Differential characteristic test...................................................................... 8-1
8.1.1 Description ...............................................................................................................................8-1
8.2 Differential characteristic test examples ................................................... 8-3
8.2.1 Overview ...................................................................................................................................8-3
8.2.2 Test example 1 .......................................................................................................................8-4
8.2.3 Test example 2 .......................................................................................................................8-9
8.2.4 Test example 3 .................................................................................................................... 8-10
8.2.5 Test example 4 .................................................................................................................... 8-11
8.3 Inrush inhibit test ..........................................................................................8-13
8.3.1 Inrush inhibit test procedure ........................................................................................ 8-13
8.4 Overexcitation inhibit test ...........................................................................8-14
8.4.1 Overexcitation inhibit test procedure....................................................................... 8-14
8.5 Frequency element tests..............................................................................8-14
8.5.1 Testing underfrequency and overfrequency elements.................................... 8-14
8.6 Blank test tables ............................................................................................8-16
8.6.1 Differential restraint tests .............................................................................................. 8-16
8.6.2 Inrush inhibit tests ............................................................................................................. 8-17
8.6.3 Overexcitation inhibit tests............................................................................................ 8-17
9.1 Saturation detector......................................................................................... 9-1
9.1.1 CT saturation detection......................................................................................................9-1
10.1 Monitoring.......................................................................................................10-1
10.1.1 Devices with Site Targets ............................................................................................... 10-1
10.1.2 Data with Modbus Analyzer.......................................................................................... 10-1
10.2 General maintenance ...................................................................................10-3
10.2.1 In-service maintenance.................................................................................................. 10-3
10.2.2 Out-of-service maintenance ........................................................................................ 10-3
10.2.3 Unscheduled maintenance (system interruption) .............................................. 10-3
10.3 Retrieve files ...................................................................................................10-3
10.3.1 CyberSentry security event files.................................................................................. 10-4
10.4 Copy settings to other device......................................................................10-5
10.5 Compare settings ..........................................................................................10-5
10.5.1 Compare against defaults ............................................................................................. 10-5
10.5.2 Compare two devices ...................................................................................................... 10-6
10.6 Back up and restore settings.......................................................................10-6
10.6.1 Back up settings .................................................................................................................10-7
10.6.2 Restore settings .................................................................................................................. 10-9
10.7 Upgrade software........................................................................................10-11
10.8 Upgrade firmware .......................................................................................10-12
10.9 Replace module............................................................................................10-13
10.10 Battery ...........................................................................................................10-14
10.10.1 Replace battery for SH/SL power supply ............................................................. 10-14
10.10.2 Dispose of battery .......................................................................................................... 10-15
10.11 Clear files and data after uninstall...........................................................10-19
10.12 Repairs...........................................................................................................10-19
10.13 Storage ..........................................................................................................10-20
10.14 Disposal .........................................................................................................10-20
T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
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