Cisco Cisco Email Security Appliance C170 Guia Da Instalação

 lists the specifications for each 930 W DC power supply.

 lists the environmental specifications for the appliance.

Class

RSP1

DC input voltage range

40 to 72 VDC (self-ranging, 48 to 60 VDC nominal)

DC line input current (steady state)

23 A peak at 48 VDC

12V main power output

930 W

12V standby power output

30 W

Power supply output voltage

Main power: 12 VDC

Standby power: 12 VDC

Temperature, operating:

41 to 104°F (5 to 40°C)
Derate the maximum temperature by 1°C per every 
305 meters of altitude above sea level.

Temperature, non-operating

–40 to 149°F (–40 to 65°C)

Humidity (RH), noncondensing 

10 to 90%

Altitude, operating

0 to 10,000 feet

Altitude, non-operating

0 to 40,000 feet

Sound power level
Measure A-weighted per ISO7779 LwAd (Bels)
Operation at 73°F (23°C) 

5.8

Sound pressure level
Measure A-weighted per ISO7779 LpAm (dBA)
Operation at 73°F (23°C) 

43