Infrastructure and Mobility, Traffic Solutions
Sopers Lane, Poole, Dorset
BH17 7ER
Version
7
Page 17 of 76
Status
ISSUED
Last Editor
Ore Oluwatudimu
TS008468
Date
31/01/2017
Document
Name
UPS Solution General Handbook
Doc. No.
667/HB/47750/000
Copyright
Siemens plc 2017 All Rights Reserved
4 Hardware Overview
4.1 Alpha FXM UPS unit
The Alpha FXM series from Alpha Technologies are outdoor, military grade, line-
interactive Uninterruptable Power Supply units that have been selected for use within the
Siemens UPS solution. The unit offers an extended operating temperature range and is
well suited for use with ELV/LV LED type traffic controller equipment.
Figure 4-1: Alpha FXM Series UPS Unit
Each Siemens UPS solution uses one of two FXM series UPS units, depending on the
power requirements of the traffic intersection to be supported.
FXM1100
– Intersections up to 1kW
FXM2000
– Intersections up to 2kW
Key information for each type of unit is listed here. For more detailed information, please see
APPENDIX C – Hardware Datasheets or consult the FXM Series UPS Operating Manual –
667/HB/47760/000.
Parameter
FXM1100
FXM2000
Nominal Voltage
230VAC
Nominal Frequency
50Hz / 60Hz
Typical Efficiency
>98% (normal mode)
Typical Transfer time
<5ms
Operating Temperature
-40°C to +74°C
Power output:
At -40° to +50° (Nominal)
1100W/VA
20000W/VA
At 65° (UK Worst case)
962.5W/VA
1700W/VA
At 74° (Operating worst case)
838.75W/VA
1520W/VA
De-rating
1.25% per degree above 55°C
1.0% per degree above 50°C
Table 4-1: FXM Series UPS – Key Electrical Information
NOTE:
Care must be taken when selecting a UPS unit if high temperatures are
expected. See section 5 for a solution sizing information and 12.5.1 for further
information on temperature de-rating.