Instruction manual –AP902 Arc Protection Unit 3 (35)
A1008B
TABLE OF CONTENTS
1ABBREVIATIONS ............................................................................................................. 5
2GENERAL......................................................................................................................... 6
2.1 Arc protection unit AP902 features........................................................................... 7
2.2 Simplified block diagram .......................................................................................... 8
3OPERATION AND CONFIGURATION.............................................................................. 9
3.1 LED indicator functions ............................................................................................ 9
3.2 LED Operation Quick Guide................................................................................... 10
3.3 Push-button description.......................................................................................... 11
3.3.1 Auto configuration (system setup)..................................................................... 11
3.4 Reset ..................................................................................................................... 11
3.5 Dipswitch settings .................................................................................................. 12
3.5.1 Scheme select dip-switch settings .................................................................... 14
3.6 Non-volatile memory .............................................................................................. 15
4ARC SENSORS .............................................................................................................. 16
4.1 Sensor Type Dependencies ................................................................................... 16
5SYSTEM SELF-SUPERVISION ...................................................................................... 17
6APPLICATION EXAMPLES ............................................................................................ 18
6.1 MV or LV application with current and light condition.............................................. 18
6.2 Circuit breaker failure protection (CBFP)................................................................ 19
7CONNECTIONS.............................................................................................................. 20
7.1 Outputs .................................................................................................................. 21
7.1.1 Trip relays T1 and T2........................................................................................ 21
7.1.2 Trip relays T3 and T4........................................................................................ 21
7.1.3 Binary output BO1 ............................................................................................ 21
7.1.4 System failure relay SF..................................................................................... 21
7.2 Inputs ..................................................................................................................... 22
7.2.1 Arc fiber optic loop sensor channels S1, S2, S3 ............................................... 22
7.2.2 Binary inputs BI1 and BI2 ................................................................................. 22
7.3 Auxiliary voltage..................................................................................................... 23
8WIRING DIAGRAM ......................................................................................................... 24
9DIMENSIONS AND INSTALLATION............................................................................... 25
10 TESTING ........................................................................................................................ 27
10.1 Carrying out testing in light only mode.................................................................... 27
10.2 Carrying out testing in light and current mode ........................................................ 28
