Vanguard VCBA ver.10.xx - Manual (Page 60)

REV 2 VCBA VERSION 10.xx SOFTWARE MANUAL
58
NOTES
• Manual Stroke allows the user to define a scaling factor for the velocity
calculation. If the stroke is measured as 5 inches by the travel
transducer, using a manual stroke of 10 inches will scale the velocity
calculations as a 2-to-1 ratio.
• V = C / Time(AP1 to AP2): Velocity is calculated by a user-defined
constant divided by the time (in milli-seconds) between analysis point
#1 and analysis point #2.
• V = C * Dist(AP1 to AP2) / Stroke: Velocity is calculated by a user-
defined constant multiplied by the distance between analysis point #1
to analysis point #2, then divided by the breaker’s stroke. This formula
is often used to calculate velocity in the new Siemens SPS or TPC
breakers.
• V = C / Delta T: Velocity calculation is defined by constant C divided by a
constant Delta T.
• Disabled: No formula is used.
Click on the “OK” button and the following window will be displayed:
14. This dialog box can be used to enable the Rotary Encoder, if desired. If you would like to
use this mode, click on the “Enable Rotary Encoder” check box and then input the
number of inches per degree (or milli-meters per degree) in the input field below the
check box. Click on the “OK” button to continue. The following window will be
displayed:
15. This dialog box can be used to set the foreground and background color of each Contact,
Travel, Current, and Voltage trace. Please see section 4.11.3 for further information.