Technical Data 
  14.3 AC voltage supply 
SIMATIC Box PC 627 
Operating Instructions, Release 05/2006, A5E00362052-03 
14-5 
14.3  14.3 AC voltage supply 
Technical data 
 
Degree of protection  IP20 (in installed state) 
Protection class  VDE 0106 
 
 
Note 
The power supply contains an active PFC (Power Factor Correction) circuit to conform to the 
EMC guidelines. 
Uninterruptible AC power systems (UPS) must supply a sinusoidal output voltage in the 
normal and buffered mode when used with SIMATIC PCs with an active PFC. 
UPS characteristics are described and classified in the standards EN 50091-3 and IEC 
62040-3. Devices with sinusoidal output voltage in the normal and buffered mode are 
identified with the classification “VFI-SS-....” or “VI-SS-....”. 
Output voltages 
 
Voltage  Max. current 
+ 12 V  6,5 A peak 8 A 
- 12 V  0,3 A 
+ 5 V  16.5 A 
1) 
Peak 18.5 A 
+ 3.3 V  8.5 A 
1)
 
1)
 The max. permitted accumulated power of the +5 V and + 3.3 V is 90 W. 
Power Good Signal of the AC power supply