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4.2.5. Connect Fan Control
Fan control enables the Stack Switchgear to control external AC or DC fans for cooling the battery
cells. The fans are enabled by the BMS when battery cell temperatures exceed configurable
thresholds.
The power source for the fans must be supplied to the Stack Switchgear. It can be either AC or DC,
depending on the fan selection for the system. This can be the same power source used for powering
the Stack Switchgear as described in
The signals are connected via feed-through connectors on the front panel, as shown in
To install a conductor
Insert a tool (such as a small flat screwdriver) into the rectangular opening at the top of the
connector. This allows the conductor to freely enter into the circular opening at the front of the
connector. Remove the tool to secure the conductor in place. For stranded wires, the use of
ferrules is recommended.
An inline breaker provides the ability to turn off fan control for the Stack Switchgear. It also protects
the system by tripping if the amperage exceeds 5 A. For specifications of this input, see
Switchgear.
For the breaker's safety mechanism to work as expected, the fan control wiring must
also be rated to at least 5 A.
Pin
Name
1
G/-
2
N
3
L/+
1
G/-
2
N
3
L/+
Figure 16
provides the internal wiring implementation of the fan control parts shown above.
Document ID: NE-PM-003
Section
4.2.4.
Table 5. Fan Control Connector Pin Assignment
Description
AC
Ground
Neutral
Line
Fan Output
Ground
Neutral
Line
Nuvation Energy High-Voltage BMS - Product Manual
Connected to Device
DC
Fan Input
Negative
External power source
NC
External power source
Positive
External power source
Negative
External fan system
NC
External fan system
Positive
External fan system
19
Table
5.
Stack
Rev 1.2, 2021-03-03
Curie Update 1
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