GE CB Watch 3 - Page 5

CB Watch 3 User Manual v6.3 - May 2019 Page 5 of 100
Figure 46 – Thermodynamic law applied to SF6 gas ................................................................................ 36
Figure 47 – Equivalent density lines and liquefaction curve ................................................................... 37
Figure 48 – Gas sensor alarms ................................................................................................................. 37
Figure 49 – Gas measurements ............................................................................................................... 38
Figure 50 – gas pressure thresholds ........................................................................................................ 39
Figure 51 – Gas thresholds ....................................................................................................................... 40
Figure 52 – Gas alarms ............................................................................................................................. 40
Figure 53 – gas liquefaction pressure ...................................................................................................... 40
Figure 54 – Gas alarms ............................................................................................................................. 41
Figure 55 – Gas moisture level ................................................................................................................. 41
Figure 56 – Moisture alarm threshold ..................................................................................................... 41
Figure 57 – Excessive moisture alarm ...................................................................................................... 42
Figure 61 – Linear gas pressure extrapolation ......................................................................................... 42
Figure 62 – Time horizons setup .............................................................................................................. 43
Figure 63 – Forecasted gas pressure values ............................................................................................ 43
Figure 66 – Gas leak rates (ganged CB) .................................................................................................... 44
Figure 67 – Gas leak rates (IPO CB) .......................................................................................................... 44
Figure 64 – Gas alarms ............................................................................................................................. 44
Figure 58 – gas graph selection ................................................................................................................ 45
Figure 59 – Short-term gas graphs ........................................................................................................... 45
Figure 60 – Long-term gas graphs ............................................................................................................ 46
Figure 72 – Gas level data ........................................................................................................................ 47
Figure 73 – Setting primary current measurement ................................................................................. 49
Figure 74 – Current before and during interruption ................................................................................ 49
Figure 75 – Interrupted current value ..................................................................................................... 50
Figure 76 – Stored interrupted current curve .......................................................................................... 50
Figure 77 – Separation offset input ......................................................................................................... 51
Figure 78 – Opening operation timing diagram ....................................................................................... 51
Figure 79 – Arcing time ............................................................................................................................ 51
Figure 80 – Max arcing time threshold .................................................................................................... 51
Figure 81 – Max arcing time threshold .................................................................................................... 52
Figure 82 – Contact electrical wear cumulative value ............................................................................. 52
Figure 83 – Initial electrical wear setting ................................................................................................. 52
Figure 84 – Opening electrical wear thresholds ...................................................................................... 53
Figure 85 – Arcing contact electrical wear alarms ................................................................................... 53
Figure 86 – Electrical wear weighting table ............................................................................................. 53
Figure 87 – Contact wear alarm summary ............................................................................................... 54
Figure 88 – Contact wear alarm summary ............................................................................................... 55
Figure 89 – Continuous display of DC voltage for source 1 and 2 ........................................................... 56
Figure 90 – DC voltage in last operation measurements ......................................................................... 56
Figure 91 – DC voltage alarm thresholds ................................................................................................. 57
Figure 92 – DC voltage alarms ................................................................................................................. 57
Figure 93 – Coil currents and coil charges ............................................................................................... 57
Figure 94 – Change in coil charge ............................................................................................................ 58
Figure 95 – Graph of coil current during opening or closing operation .................................................. 59
Figure 96 – Drop-down list of previous archives ..................................................................................... 59
Figure 97 – Maximum mean current threshold settings ......................................................................... 60
Figure 98 – Coil charge alarms ................................................................................................................. 60