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NV10P - Manual - 01 - 2015
Oscillography (DFR) ..................................................................................................................................................................................... 23
PLC (Programmable Logic Controller) ...................................................................................................................................................... 23
3.9 METERING..........................................................................................................................................................................................................24
Accuracy (type tests)....................................................................................................................................................................................24
Measures ........................................................................................................................................................................................................24
4 FUNCTION CHARACTERISTICS 25
4.1 HARDWARE DESCRIPTION .............................................................................................................................................................................25
Power supply board ......................................................................................................................................................................................26
CPU board .......................................................................................................................................................................................................26
Input board .....................................................................................................................................................................................................26
MMI (keyboard, LED and display) ..............................................................................................................................................................26
4.2 SOFTWARE DESCRIPTION ..............................................................................................................................................................................27
Base software ................................................................................................................................................................................................27
Real-time operating system .........................................................................................................................................................................27
Task ..................................................................................................................................................................................................................27
Drivers ............................................................................................................................................................................................................ 28
Application Software ................................................................................................................................................................................... 28
Data Base ...................................................................................................................................................................................................... 28
Self test (Application) .................................................................................................................................................................................. 28
Development tools (Builder) ....................................................................................................................................................................... 28
4.3 I/O DESCRIPTION ............................................................................................................................................................................................. 29
Metering inputs ............................................................................................................................................................................................ 29
Signal processing ......................................................................................................................................................................................... 29
Conventions ....................................................................................................................................................................................................31
Use of measured values ...............................................................................................................................................................................32
Binary inputs ................................................................................................................................................................................................. 33
Output relays ..................................................................................................................................................................................................37
LED indicators ............................................................................................................................................................................................... 39
Communication interfaces ...........................................................................................................................................................................41
4.4 PROTECTIVE ELEMENTS .................................................................................................................................................................................42
Rated values ...................................................................................................................................................................................................42
Thermal protection with RTD thermometric probes - 26 ....................................................................................................................... 50
Undervoltage - 27 ..........................................................................................................................................................................................52
Positive sequence undervoltage - 27V1 ....................................................................................................................................................56
Overvoltage - 59 ............................................................................................................................................................................................ 58
Average overvoltage (59avg) .......................................................................................................................................................................62
Residual overvoltage - 59N ..........................................................................................................................................................................64
Negative sequence overvoltage - 59V2 .................................................................................................................................................... 69
Overfrequency - 81O .....................................................................................................................................................................................71
Underfrequency - 81U ................................................................................................................................................................................. 73
Application notes about over-under frequency elements - 81U and 81O ............................................................................................77
Frequency rate of change - 81R................................................................................................................................................................. 80
Breaker failure - BF .......................................................................................................................................................................................84
4.5 CONTROL AND MONITORING ........................................................................................................................................................................86
Logical block - BLOCK1 ................................................................................................................................................................................86
Virtual I/O with Ethernet messages ........................................................................................................................................................... 88
Remote tripping .............................................................................................................................................................................................92
Frequency tracking ...................................................................................................................................................................................... 93
Trip circuit supervision - 74TCS...................................................................................................................................................................94
Circuit breaker supervision .........................................................................................................................................................................97
Oscillography ............................................................................................................................................................................................. 100
5 MEASURES, LOGIC STATES AND COUNTERS 101
Measures ......................................................................................................................................................................................................101
Protection .....................................................................................................................................................................................................101
Delayed inputs .............................................................................................................................................................................................101
Internal states ..............................................................................................................................................................................................101
Relays ............................................................................................................................................................................................................101
Counters ........................................................................................................................................................................................................101
Self test .........................................................................................................................................................................................................102
Fault recording - SFR ..................................................................................................................................................................................102
Event recording - SER ................................................................................................................................................................................ 103
Oscillography - DFR ................................................................................................................................................................................... 103
6 INSTALLATION 105
6.1 PACKAGING .....................................................................................................................................................................................................105
6.2 MOUNTING ......................................................................................................................................................................................................105
6.3 ELECTRICAL CONNECTIONS ....................................................................................................................................................................... 109
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