Ambient Temperature; Figure 170 - Ambient Temperature; Figure 171 - Last Operation Temperature Measurements - GE CSE Uniserve CB Watch 3 Operating 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 170 – Ambient temperature
The outside ambient temperature is also always recorded and stored for each operation:
HMI: Measurements/Last opening and closing results
Figure 171 – Last operation temperature measurements
MA-037 - CB Watch 3 Operating Manual v7.0 - May 2020 Page 100 of 118