doble TDR9000, User Manual, Page: 66 / 454

Trip Free (C-O)
2-16 72A-1898 Rev. A 11/01
Monday
, November 26, 2001 1:09 pm
Trip Free (C-O)
Figure 2.11 is a simplified representation of the test waveform generated
for the Trip Free test.
Figure 2.11 Trip Free Command Pulse
Command
Parameters
Close Pulse This time setting determines the duration of the
Close Pulse sent to operate the close circuit of the
circuit breaker.
Trip Free and Delay
These parameters determine when the Trip Pulse is
initiated:
Standing
Initiates .5 cycles (8.3 ms at 60 Hz) after the test
starts.
Delay
Initiates after the time entered in the Delay Length
field.
Contact 1 Make
Initiates when the TDR9000 senses that a contact
make has occurred on the first of the Main
Contacts.
Recording Length This setting determines the recording length and
implicitly sets the sampling rate at which the
recording is performed.
133 msecs
Trip Command
Close Command
Delay
On
Off
On
Off