Teleprotection
GARD 8000 SYS RFL Electronics
March 1, 2006 9-5 973.334.3100
9.2.4 DIRECTIONAL COMPARISON UNBLOCKING
DCUB schemes continuously transmit a block or guard signal until an internal fault is detected. If an
internal fault occurs, the transmitter sends an “unblock (trip). Unblocking schemes also provide for a
150ms unblock (trip) after a loss of channel is detected by the receiver.
Figure 9-5. Directional Comparison Unblocking
9.3 TELEPROTECTION SETTINGS
Refer to paragraph 7.2.6 for Teleprotection Configuration Settings.