GE T60 Instruction Manual page 8
Transformer protection system
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Also See for T60:
- Instruction manual (796 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (628 pages)
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7.1
Commands menu ...................................................................................................7-1
7.1.1
Virtual inputs ...........................................................................................................................7-2
7.1.2
Clear records...........................................................................................................................7-2
7.1.3
Set date and time..................................................................................................................7-3
7.1.4
Relay maintenance ..............................................................................................................7-3
7.1.5
Phasor Measurement Unit one-shot ...........................................................................7-5
7.1.6
Security ......................................................................................................................................7-6
7.2
Targets menu ..........................................................................................................7-7
7.2.1
Target messages...................................................................................................................7-7
7.2.2
Relay self-tests .......................................................................................................................7-8
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
Directional principle...............................................................................................9-1
9.1.1
Current directional protection ........................................................................................9-1
9.2
Saturation detector................................................................................................9-2
9.2.1
CT saturation detection......................................................................................................9-2
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 Convert device settings.......................................................................................10-5
10.5 Copy settings to other device ............................................................................10-7
10.6 Compare settings .................................................................................................10-7
10.6.1
Compare against defaults ............................................................................................. 10-7
10.6.2
Compare two devices ...................................................................................................... 10-8
10.7 Back up and restore settings .............................................................................10-8
10.7.1
Back up settings .................................................................................................................10-8
10.7.2
Restore settings ............................................................................................................... 10-11
T60 TRANSFORMER PROTECTION SYSTEM - INSTRUCTION MANUAL
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