LevelOne UPS-21 Serie Mode D'emploi page 23

Tower installation

3.4 Connecting the EBM
A small amount of arcing may occur when connecting an EBM to the UPS. This is normal
and will not harm personnel.
Up to 4 EBMs can be connected to the UPS.
3.4.2 Tower models
1
2
3
5
1
3
4