Internal Power
The default Stack Switchgear requires 100 V to 240 V AC power to be supplied from an external
source. Power is 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 bottom
of the connector. Remove the tool to secure the conductor in place. For stranded wires, the use of
ferrules is recommended.
When the Stack Switchgear option for external 24 V DC (no internal AC to DC
converter) is selected, the positive is at pin 2 and the negative is at pin 3 (pin 1 can
be left unconnected). For available Stack Switchgear options, refer to
Nuvation
Energy Stack Switchgear: NUVSSG Datasheet
, available online at
https://www.nuvationenergy.com/technical-resources
.
An inline breaker provides the ability to turn off input power for the Stack Switchgear. It also protects
the system by tripping if the input current exceeds 5 A. For specifications of this input, see
For the breaker’s safety mechanism to work as expected, the input power wiring
must also be rated to at least 5 A.
Table 6. Internal power pinout
Pin
Name
Description Connected to Device
1
G
Ground
External power source
2
N
Neutral
External power source
3
L
Line
External power source
Nuvation Energy Stack Switchgear - Product Manual
Document ID: NE-PM-003
19
Rev 1.0, 2020-09-03
