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.
Figure 14. Power In Breaker
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
Figure 15. Grounding stud
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
Table 3. Minimum grounding wire size
Stack Switchgear
Current Rating (A)
Grounding Wire (AWG)
Copper
Aluminum
100
8
6
200
6
4
300
4
2
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:
Nuvation Energy High-Voltage BMS - Product Manual
Document ID: NE-PM-003
17
Rev 1.2, 2021-03-03
Curie Update 1
