Siemens 7SG23 MSCDN - MP2A, Manual

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MSCDN – MP2A Description of Operation
Contents
1 Introduction .............................................................................................................................................................. 3
2 Hardware Description............................................................................................................................................... 3
2.1 General.......................................................................................................................................................... 3
2.2 Analogue Inputs............................................................................................................................................. 4
2.3 Status Inputs.................................................................................................................................................. 4
2.4 Output Relays ................................................................................................................................................ 4
2.5 Fascia LEDS.................................................................................................................................................. 4
2.6 Self Monitoring............................................................................................................................................... 4
2.6.1 Protection Healthy/Defective.................................................................................................................. 5
3 Protection Functions ................................................................................................................................................ 5
3.1 Resistor R1 and R2 Thermal Overload (R1 49, R2 49) ................................................................................. 5
3.2 Resistor R1 and R2 Open Circuit (50OC)...................................................................................................... 5
3.3 Trip Circuit Supervision.................................................................................................................................. 6
4 Other Features......................................................................................................................................................... 6
4.1 Metering......................................................................................................................................................... 6
4.2 Data Storage ................................................................................................................................................. 6
4.2.1 General.................................................................................................................................................. 6
4.2.2 Waveform Records. ............................................................................................................................... 6
4.2.3 Event Records ....................................................................................................................................... 6
4.2.4 Fault Recording ..................................................................................................................................... 7
4.3 Time Synchronisation .................................................................................................................................... 7
4.3.1 IRIG-B Time Synchronisation ................................................................................................................ 7
4.3.2 IEC 60870-5-103 Time Synchronisation ................................................................................................ 7
4.3.3 Real Time Clock Time Synchronisation ................................................................................................. 7
4.4 Communications ............................................................................................................................................ 7
4.5 Settings Groups ............................................................................................................................................. 7
4.6 Password Feature.......................................................................................................................................... 8
5 User Interface .......................................................................................................................................................... 8
5.1 Liquid Crystal Display .................................................................................................................................... 8
5.2 Back light Control........................................................................................................................................... 8
5.3 LED Indications.............................................................................................................................................. 8
5.4 Keypad .......................................................................................................................................................... 8
5.5 Relay Identifier............................................................................................................................................... 8
5.6 Settings Mode................................................................................................................................................ 9
5.6.1 Settings Adjustment............................................................................................................................... 9
5.6.2 Settings And Displays ............................................................................................................................ 9
5.7 Instruments Mode ........................................................................................................................................ 10
5.7.1 Hidden Instruments.............................................................................................................................. 11
5.8 Fault Data Mode ......................................................................................................................................... 11
6 Diagrams ............................................................................................................................................................... 12
Figures
Figure 1 – MSCDN-MP2A Overview........................................................................................................................ 3
Figure 2 – Modular II Relay in E16 case with front panel open...............................................................................12
Figure 3 – Modular II Relay Rear View ...................................................................................................................12
Figure 4 – Menu Structure ......................................................................................................................................13
©2010 Siemens Protection Devices Limited Chapter 1 Page 2 of 13