GE P642 Technical Manual page 15

P64x
2.5 Replacing PCBs
2.5.1 Replacing the main processor board
2.5.2 Replacement of communications boards
2.5.3 Replacement of the input module
2.5.4 Replacement of the power supply board
2.5.5 Replacement of the I/O boards
2.6 Recalibration
2.7 Changing the battery
2.7.1 Post Modification Tests
2.7.2 Battery Disposal
2.8 Cleaning
3 Troubleshooting
3.1 Self-Diagnostic Software
3.2 Power-up Errors
3.3 Error Message or Code on Power-up
3.4 Out of Service LED on at power-up
3.5 Error Code during Operation
3.5.1 Backup Battery
3.6 Mal-operation during testing
3.6.1 Failure of Output Contacts
3.6.2 Failure of Opto-inputs
3.6.3 Incorrect Analogue Signals
3.7 PSL Editor Troubleshooting
3.7.1 Diagram Reconstruction
3.7.2 PSL Version Check
4 Repair and Modification Procedure
Chapter 21 Technical Specifications
1 Chapter Overview
2 Interfaces
2.1 Front Serial Port
2.2 Download/Monitor Port
2.3 Rear Serial Port 1
2.4 Fibre Rear Serial Port 1
2.5 Rear Serial Port 2
2.6 IRIG-B (Demodulated)
2.7 IRIG-B (Modulated)
2.8 Rear Ethernet Port Copper
2.9 Rear Ethernet Port Fibre
2.9.1 100 Base FX Receiver Characteristics
2.9.2 100 Base FX Transmitter Characteristics
3 Performance of Transformer Differential Protection and Monitoring Functions
3.1 Transformer Differential Protection
3.2 Matching Factors
3.3 Circuitry Fault Alarm
3.4 Through Fault Monitoring
3.5 Thermal Overload
3.6 Low Impedance Restricted Earth Fault
3.7 High Impedance Restricted Earth Fault
4 Performance of Current Protection Functions
4.1 Transient Overreach and Overshoot
4.2 Three-phase Overcurrent Protection
4.2.1 Three-phase Overcurrent Directional Parameters
4.3 Voltage Dependent Overcurrent Protection
4.4 Earth Fault Protection
4.4.1 Earth Fault Directional Parameters
P64x-TM-EN-1.3
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