24
Figure 6C: Event to Time Correlation of Fig 6A
Using a Separately Wetted 52 / a Contact to
Start
OPTI
mizer
2
Measurements
Example:
• The Aux A input on the
OPTImizer
2
is asserted by voltage from a separate contact on the 52 / a switch.
• The TRIP TIME cannot be recorded with this wiring method.
• The CLEARING TIME cannot be recorded with this wiring method.
• The recorded TRAVEL TIME is 51ms
• The recorded ARC TIME is 32mS
• The A INPUT DELAY Setting is -19mS, as the assertion to the Aux A input on the
OPTImizer
2
is the same Aux A
switch, which opens 19mS after the main contacts part (A INPUT DELAY is negative when the assertion to the Aux
A input is later than the main contacts parting)
• The ARC TIME alarm limit is 48mS (32mS plus 16mS margin)
• The TRAVEL TIME alarm limit is 76mS (51mS plus 25mS margin)
This
OPTI
mizer
2
would not be in an alarm state after this operation.
