Basler Electric BE1-11t - Manual (Page 106)

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Figure 61. Percentage Restrained Differential Characteristic
Logic Connections
Phase current differential element logic connections are made on the BESTlogicPlus screen in
BESTCOMSPlus. The phase current differential element logic block is illustrated in Figure 62. Logic
inputs and outputs are summarized in Table 33.
Figure 62. Phase Current Differential Element Logic Block
Table 33. Logic Inputs and Outputs
Name Function Purpose
Block Input Disables the 87 function when true
Trip Output True when the 87 element is in a trip condition
Pickup Output True when the 87 element is in a pickup condition
Unrestrained Trip Output True when the 87 element is in an unrestrained trip condition
2 nd Harmonic Inhibit Output True when the 87 is inhibited by 2 nd harmonic ratio
5 th Harmonic Inhibit Output True when the 87 is inhibited by 5 th harmonic ratio
0BPhase Current Differential (87) Protection BE1-11t