Ametek UPLC-II System Manual page 114

UPlC-ii™ System manual
Trip Test
LR Pre-Trip Delay*
LR Trip Hold
LR Guard Hold
LR Unblock Timer
LR Unblock Delay
LR Guard Before
Trip
lr = line relaying
Cmd A Pre-Trip Delay*
Cmd A Trip Hold
Cmd A Guard Hold
Cmd A Unblock Timer
Cmd A Unblock Delay
Cmd A Guard Before
Trip
*
For every msec of pre-trip delay you add, the security, against noise causing a false trip, increases exponentially.
UB & PoTT: a min of 2-4 msec is recommended.
DTT: The time delay should be as long as the critical stability of your system can tolerate, at least 10 msec min.
Page 5–22
Table 5–10. Logic Settings for 3-Frequency
(FSK Mode)
Options
Enabled
or Disabled
Receiver Logic
0 to 30 ms DTT Pre-Trip Delay*
0 to 100 ms DTT Trip Hold
0 to 100 ms DTT Guard Hold
0 to 500 ms
0 to 100 ms
None, GBT or DTT Guard Before
GBT w/Override
Table 5–11. Logic Settings for 4-Frequency
(FSK Mode)
Receiver Logic
0 - 30 ms Cmd B Pre-Trip Delay*
0 - 100 ms
0 - 100 ms Cmd B Guard Hold
0 - 500 ms Cmd B Unblock Time
0 - 100 ms Cmd B Unblock Delay
None, GBT or Cmd B Guard Before
GBT w/Override
0 to 30 ms
0 to 100 ms
0 to 100 ms
None, GBT or
Trip GBT w/Override
Cmd B Trip Hold 0 - 100 ms
0 - 100 ms
0 - 500ms
0 - 100ms
None, GBT or
Trip GBT w/Override
0 - 30 ms