Ambient Temperature - GE CB Watch 3 User Manual

Ambient temperature

The outside ambient temperature is usually measured using a PT100 temperature sensor
connected as the first input of the RTD8 module (which is always reserved for it).
If the RTD8 module is not present in the configuration but SF6 gas sensors are present,
then because they are usually mounted away from direct sunlight an underneath the
breaker, the temperature sensor built into the gas sensor is used as the ambient
temperature reference. If there are 3x gas sensors, then the average of the 3
measurements is used.
Provided there is a source, the information is continuously displayed in the HMI:
HMI: Measurements / Sensors
Figure 140 – Ambient temperature
The outside ambient temperature is also always recorded and stored for each operation:
HMI: Measurements/Last opening and closing results
Figure 141 – Last operation temperature measurements
CB Watch 3 User Manual v6.3 - May 2019 Page 86 of 100