TDR9000
™
Circuit Breaker Test System User’s Guide
72A-1898 Rev. A 11/01 A-59
Monday, November 26, 2001 1:09 pm
The Transfer Function is shown in Figure A.70.
Figure A.70 Transfer Function Resolution
If the Main Contacts have moved 30"
, th
at means that for every 0.00125"
movement of the Transducer connecting rod, the Main Contacts would
move 0.00375". Consequently, when the Transfer Function 3:1 is used,
the resolution becomes 0.00125 x 3 = 0.00375".
Practical considerations limit the value of the Transfer Function values.
The Instrument checks to ensure that linear-to-linear Transfer Function is
less than or equal to 50:1.
Figure A.71 shows an example of the rotary-to-linear Transfer Function.
Figure A.71 Rotary-To-Linear Transfer Function