EATON ELECTRICAL
26
Predictive Diagnostics
Pre-Rev 1
Rev 1
Figure 4. Sensor Interface Board
The 40-pin connector TB2 (top left) serves the connection between the Sensor Interface
Board and the InsulGard device via a flat ribbon cable included with the kit. The 12-
terminal strip TB3 (bottom left) serves all auxiliary signal connections, such as
temperature, current, humidity, and voltage. The 32-terminal strip TB1 (right) is
dedicated for PD sensor connections using coaxial cables.
In the InsulGard enclosure, the sensor interface board is positioned vertically as show in
Figure 5.
Figure 5.
Signal connections are summarized in two Tables below.
PD signal
connection
TB-1
Noise Channel
TB-1
40 pin
connector to
InsulGard
TB-2
RTD
(Temperature)
TB-3
Auxiliary CT
(%Load)
TB-3
PT or phase
reference
signal
TB-3
RH% sensor
(Humidity)
TB-3
