Basler Electric BE1-11t - Manual (Page 70)

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pickup setting as Vpp in BESTCOMSPlus. See Table 17 for a full list of possible settings. The Aux VT
Connection parameter is found on the System Parameters/Sensing Transformers settings screen in
BESTCOMSPlus. For more information on the auxiliary VT setup, see the
Configuration chapter.
Table 17. Auxiliary VT Configuration
Aux VT Connection Mode Unit
AB, BC, CA Vx Fundamental, Vx Third Harmonic VPP
AN, BN, CN Vx Fundamental, Vx Third Harmonic VPN
Ground Vx Fundamental, Vx Third Harmonic VPN
Any V1, V2, and 3V0 VPN
Timings
The timing mode can be set for definite or inverse. For details on the inverse time curve, refer to the Time
Curve Characteristics chapter.
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 59X 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 BE1-11t 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 BE1-11t can be used to block 59X 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, the 59X function will be blocked
when configured for V1 mode. If Block V2 is enabled, the 59X function will be blocked when configured
for V2 mode. If Block 3V0 is enabled, the 59X function will be blocked when configured for 3V0 mode.
See the
Fuse Loss (60FL) chapter for more information on the 60FL function.
Protective elements blocked by 60FL should be set so that trip times are 60 milliseconds or greater to
assure proper coordination of blocking.
Block Logic Input
The Block input provides logic-supervision control of the element. When true, the Block input disables the
element by forcing the Trip and Pickup outputs to logic 0 and resetting the element timer. Connect the
Auxiliary Overvoltage (59X) Protection BE1-11t