5.3.5. Thermistor
Contact Nuvation Energy for support if temperature compensation of the high-current shunt is desired
for your specific application.
Nuvation Energy can be contacted via
.
5.3.6. Current Shunt
The Current Shunt connector provides a current shunt input for current measurement of the high-
voltage stack. For best results, minimize the cable length used between the shunt and the connector.
Use a twisted pair for the differential shunt voltage sense wires. The differential voltage across the
shunt must never exceed 1V under any circumstance. Choose the resistance value accordingly.
Connect the current shunt to this connector.
Table 32. Current Shunt: Molex MiniFit Jr Connector
Molex 39-01-4041
Manufacturer
Molex Incorporated
Housing
39-01-4041
Housing material
Nylon UL94V-0
Circuits
4
Crimp terminal
39-00-0181
Wire gauge range
AWG18-24 stranded
Table 33. Current Shunt Connector Pin Assignment
Pin
Connection
Description
Connected to Device
1
No Connect
Not Connected
No Connect
2
VSHUNT_REF
Voltage reference for voltage measurement
Load side of current shunt
3
VSHUNT_LOAD
Differential voltage input; Load side
Load side of current shunt
4
VSHUNT_BAT
Differential voltage input; Battery side
Battery side of current shunt
An example high-current shunt wiring diagram is shown below:
Nuvation Energy High-Voltage BMS - Installation Guide
Document ID: NE-IG-001
34
Rev 2.1, 2020-03-13