A
Raised stator winding temperature on GT MARK-II indicator was observed. 3 wire copper-10 RTDs installed on stator and cooling air path.
All RTDs have two separate positive and negative and a common compensation cable. But when we measured RTD temperature from JB5 it was less then what was being displayed e.g.<pre>
JB(RTD Disconnected) MARK-II TI
RTD-1 103degC 100degC
RTD-2 103degC 115degC
RTD-3 101deGc 103degC
RTD-4 104DegC 118DegC
and so on</pre>
We replaced positive and negative cable of RTD-4 from JB to MARK-II control MARK-II indicator started displaying 100DegC.
Now my question is why all RTDs which are in error showing positive shift of temperature only??? why not negative?? all cables are equally old and they are a part of common jigg. I am only confused due to this positive increment of temperature and same is the case with our other GT. Thanks in anticipation.
Regards,
Adeel Imtiaz
All RTDs have two separate positive and negative and a common compensation cable. But when we measured RTD temperature from JB5 it was less then what was being displayed e.g.<pre>
JB(RTD Disconnected) MARK-II TI
RTD-1 103degC 100degC
RTD-2 103degC 115degC
RTD-3 101deGc 103degC
RTD-4 104DegC 118DegC
and so on</pre>
We replaced positive and negative cable of RTD-4 from JB to MARK-II control MARK-II indicator started displaying 100DegC.
Now my question is why all RTDs which are in error showing positive shift of temperature only??? why not negative?? all cables are equally old and they are a part of common jigg. I am only confused due to this positive increment of temperature and same is the case with our other GT. Thanks in anticipation.
Regards,
Adeel Imtiaz