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Power In
An inline breaker provides the ability to turn off input power for the Stack Switchgear. Ensure the
breaker is in the OFF position.
Verify system is de-energized
Using a multimeter check the Battery Stack and the DC Bus terminals respectively to verify that
the system is de-energized. Be aware that battery itself cannot be de-energized and in some
situations, it may not be possible to de-energize the DC bus.
4.2.3. Grounding the Stack Switchgear
The Stack Switchgear must be bonded to the rack or Earth through a suitably sized conductor by NEC
standards. From NFPA 70, Table 250.122, the wire size must be chosen based on the rating of the
automatic over-current device in the circuit, as shown in
An M8 lug (not included) should be used (e.g. Panduit Corp LCMA50-8-L), along with an M8 screw
and tooth lock washer (included), as shown in
In order to make the connection:
Document ID: NE-PM-003
Figure 14. Power In Breaker
Figure 15. Grounding stud
Table 3. Minimum grounding wire size
Stack Switchgear
Current Rating (A)
100
200
300
Nuvation Energy High-Voltage BMS - Product Manual
Table
3.
Grounding Wire (AWG)
Copper
Aluminum
8
6
4
Figure
15.
17
6
4
2
Rev 1.2, 2021-03-03
Curie Update 1
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