Page 4 - Guard II+ - Use Data Effectively
P. 4

400                                                                      Iris Application
                                                            350  High 217-360mV                                                      Manager (IAM)
                                                            300
          ON-LINE MONITORING THE EFFICIENT WAY             Peak Magnitude (mV)  250                  C1 Qm+
                                                            200
                                                                                                     C1 Qm-
                                                            150
                                                                                                     Linear (C1 Qm+)
          The How?                                          100 50  Typical <62mV                    Linear (C1 Qm-)
                                                              Moderate 62-316mV
                                                            0
                                                             9/15  10/15  11/15 12/15  1/16  2/16  3/16  4/16  5/16  6/16  7/16  8/16  9/16  10/16
        Step 1:                                                               Month/Year
        Connect the Guard to your plant network using a standard ethernet cable.

        Step 2:
        Configure the Guard to receive the asset operating conditions:  kV, MW, MVar and Temperature.

        Step 3:
        Configure your DCS to receive the Guard output via ModBus/TCPIP protocols.

        Step 4:
        Configure your DCS to alert when the appropriate conditions are met, such as:
            •  PD is above the 75% and increasing at the rate of 100% over a 12-month interval
            •  PD is above the 90% and increasing at a rate of 50% over a 12-month interval
            •  Negative PD is greater than the Positive PD for a multi-turn coil winding
            •  Positive PD is greater than the Negative PD and directly correlates with load
            •  Increase in the number of coils with a negative flux difference greater than 3% in a round rotor
            •  The number of coils with less than 95% flux of the average is increasing in a salient-pole winding
            •  Any endwinding sensor is indicating an increase in displacement
            •  Any endwinding sensor is indicating vibration that correlates with load
            •  There is a notable change in shaft voltage
            •  There is a notable change in shaft current

        Step 5:
        Use the Iris Application Manager across your plant LAN software to analyze the data that led to the alert

        Step 6:
        Perform additional testing and/or visual inspections based on the results of Step 5
   1   2   3   4