Basler BE1-11g Instruction Manual page 85

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Figure 50. Time Overvoltage Characteristic Curves
Pickup and Trip
The Pickup output occurs first, followed by the Trip output.
Pickup
The Pickup output becomes true when the measured voltage increases above the voltage threshold
established by the Pickup setting. In BESTlogicPlus, the Pickup output can be connected to other logic
elements to annunciate the condition, control other elements in logic, and start the fault recorder (logic
element FAULTTRIG).
Assertion of the Pickup output initiates a timer that begins timing to a trip. The duration of the timer is
established by the Time Delay (definite timing) or Time Dial (inverse timing). A Time Delay or Time Dial
setting of zero (0) makes the 59P element instantaneous with no intentional time delay.
If the pickup condition subsides before the element delay or calculated inverse time expires, the timer and
Pickup output are reset, no corrective action is taken, and the element is rearmed for any other
occurrences of overvoltage.
Trip
The Trip output becomes true if an overvoltage pickup condition persists for the duration of the element
Time Delay setting or calculated inverse time. In BESTlogicPlus, the Trip output can be connected to
other logic elements and to a physical relay output to annunciate the condition and to initiate corrective
action. If a target is enabled for the element, the BE1-11g will record a target when the Trip output
becomes true. See the Fault Reporting chapter for more information about target reporting.
Element Blocking
Fuse Loss
The fuse loss (60FL) element of the BE1-11g can be used to block 59P protection when fuse loss or loss
of potential is detected in a three-phase system.
If the 60FL element trip logic is true and Block Phase/V1 is enabled, all functions that use the phase
voltage are blocked. See the Fuse Loss (60FL) chapter for more information on the 60FL function.
BE1-11g Phase Overvoltage (59P) Protection