GE G30 Instruction Manual page 8

8 APPLICATION OF
SETTINGS
9 COMMISSIONING
10 THEORY OF
OPERATION
11 MAINTENANCE
viii
7.1.3 Set date and time..................................................................................................................7-3
7.1.4 Relay maintenance ..............................................................................................................7-3
7.1.5 Security ......................................................................................................................................7-4
7.2 Targets menu ..........................................................................................................7-5
7.2.1 Target messages...................................................................................................................7-5
7.2.2 Relay self-tests .......................................................................................................................7-6
8.1 Overview ..................................................................................................................8-1
8.1.1 Introduction .............................................................................................................................8-1
8.1.2 In-zone transformer with VT on the high-voltage side .......................................8-1
8.1.3 In-zone transformer with VT on the low-voltage side .........................................8-3
8.1.4 No in-zone transformer .....................................................................................................8-4
8.2 Settings.....................................................................................................................8-6
8.2.1 System setup...........................................................................................................................8-6
8.2.2 Power system .........................................................................................................................8-7
8.2.3 Signal sources ........................................................................................................................8-7
8.2.4 Generator unbalance..........................................................................................................8-8
8.2.5 Loss of excitation ..................................................................................................................8-9
8.2.6 Reverse power..................................................................................................................... 8-10
8.2.7 System backup overcurrent.......................................................................................... 8-10
8.2.8 Overexcitation ..................................................................................................................... 8-12
8.2.9 Inputs/outputs..................................................................................................................... 8-12
8.2.10 Frequency.............................................................................................................................. 8-13
8.2.11 Accidental energization .................................................................................................. 8-14
8.2.12 FlexLogic ................................................................................................................................ 8-14
9.1 Testing ......................................................................................................................9-1
9.1.1 Testing underfrequency and overfrequency elements.......................................9-1
10.1 Directional principle.............................................................................................10-1
10.1.1 Current directional protection .....................................................................................10-1
10.2 Saturation detector..............................................................................................10-2
10.2.1 CT saturation detection................................................................................................... 10-2
11.1 Monitoring .............................................................................................................11-1
11.1.1 Devices with Site Targets ............................................................................................... 11-1
11.1.2 Data with Modbus Analyzer.......................................................................................... 11-1
11.2 General maintenance ..........................................................................................11-3
11.2.1 In-service maintenance.................................................................................................. 11-3
11.2.2 Out-of-service maintenance ........................................................................................ 11-3
11.2.3 Unscheduled maintenance (system interruption) .............................................. 11-3
11.3 Retrieve files ..........................................................................................................11-3
11.3.1 CyberSentry security event files.................................................................................. 11-4
11.4 Convert device settings.......................................................................................11-5
11.5 Copy settings to other device ............................................................................11-7
11.6 Copy settings to other device ............................................................................11-7
11.7 Compare settings .................................................................................................11-7
11.7.1 Compare against defaults ............................................................................................. 11-8
11.7.2 Compare two devices ...................................................................................................... 11-8
11.8 Back up and restore settings .............................................................................11-9
11.8.1 Back up settings .................................................................................................................11-9
11.8.2 Restore settings ............................................................................................................... 11-11
G30 GENERATOR PROTECTION SYSTEM - INSTRUCTION MANUAL
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