Temperature Sensing ?
An observation based on the photograph posted above by Speed of Sound:
The central two connecting bus-bars each have two "connections", compared to one for each of the other intermediate bus-bars - one of these "connections" is under the white mass.
I notice that one of the "connections" to each bus-bar appears to have thicker wire (the ones to the centre of the bus-bar). Is it possible that these are two-wire connections to something like a thermocouple?
This might be one form of temperature sensing, but not really enough to give comfort in the high level of monitoring.