Artesyn Centellis 2000 Shelf - DC Installation and Use (June 2014) - Manual (Page 68)

Site Preparation
Centellis 2000 Shelf - DC Installation and Use (6806800G45F) 68
2.3.2 Power Requirements
Make sure that a suitable -48.0 VDC to -60 VDC (rated) power source is within reach of the
system. Up to two power entry modules (PEMs) can be installed in the system.
Air outlet (system’s rear) 70 °C (158 °F)
>70 °C (158 °F) and maximum 90 °C (194 °F): the cables
must be isolated and must be approved to be used in
this temperature range.
>70 °C (158 °F) and maximum 90 °C (194 °F): If you
operate the system at >70 °C and the service personnel
may touch the components, you have to make sure that
the cables are isolated and that the "hot surface" icon is
attached. The cables must be approved to be used in
this temperature range.
Table 2-2 Critical Temperature Limits (continued)
Component Maximum Temperature
Personal Injury or System Damage
The system is supplied by a TNV-2 voltage. This voltage is considered hazardous. Make sure
that the external power supply meets the relevant safety standards.
Ensure that TNV-2 is separated from dangerous voltages (mains) through double or
reinforced insulation.