9424200996 42-1
BE1-11m Fuse Loss (60FL)
42 • Fuse Loss (60FL)
The fuse loss (60FL) element detects fuse loss or loss of potential in a three-phase system.
Element logic connections are made on the BESTlogic™Plus screen in BESTCOMSPlus® and element
operational settings are configured on the Fuse Loss (60FL) settings screen in BESTCOMSPlus. A
summary of the logic output and operational settings appears at the end of this chapter.
BESTCOMSPlus Navigation Path: Settings Explorer, Alarm Configuration, Fuse Loss (60FL)
HMI Navigation Path: Settings Explorer, Alarm Configuration, Fuse Loss 60FL
Element Operation
The 60FL element detects fuse loss and loss of potential by using voltage and current thresholds that are
expressed as a percentage of the nominal voltage and current values. See the Configuration chapter for
information on changing the nominal voltage and current values.
When the 60FL element logic becomes true, the Fuse Loss output becomes true. A logic diagram is
shown in Figure 42-1. Logic parameters are shown in Table 42-1.
Trip Logic: 60FL Trip = (A * C * G * J * P) + (E * F * G * J) (See Table 42-1.)
Reset Logic: 60FL Reset = H * /K */L (See Table 42-1.)
Figure 42-1. Fuse Loss Element Logic
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