Chapter 1 : General
UPS/NTA GB/ DELMX_EXPC1C3C6.B
page 6
3. SAFETY
CAUTION
The equipment can only be switched on or used if the following
conditions are fulfilled :
- electrical connections comply with the regulation in force (earth
bonding, appropriate protections and cross-section of cables)
- all means to comply with the protection index of the system are in
place, such as side panels, doors, glands, shields or whatever...).
ADVICE
- Carefully follow the instructions described in this manual.
- All handling must only be carried out by personnel who are suitably
trained.
CAUTION
Do not forget that even when the load is stopped the unit is live
:
- because of the mains voltage, the rectifier and the bypass.
- because of the voltage generated by the battery and by the rectifier.
- because of the load voltage when the maintenance bypass Q5 is closed
and the bypass mains is present.
DANGER
Any operation inside the cabinets is to be completed:
-
once the UPS is stopped and no longer live
-
after a 5-minute wait for the capacitors upstream of the rectifier
and inverter to discharge.
CAUTION : the residual voltage of the capacitors may still cause
heavy electrical arcs after 5 minutes.
