Characteristics of the BMXCPS3522 Redundant Power Supply Module
Original instructions
About us
Introduction
The BMXCPS3522 module is a redundant direct current (125 Vdc) power supply module.
Altitude Operating Conditions
The characteristics in the table below apply to the BMXCPS3522 and BMXCPS3522H power supply modules for use at altitude up to 2000 m (6560 ft). When the power supply modules operate above 2000 m (6560 ft), apply additional derating.
For detailed information, refer to chapter Operating and Storage Conditions.
Characteristics
Characteristics of the primary block
Nominal voltage
125 Vdc
Voltage range
100...150 Vdc
Power
40 W
Nominal current consumption
0.6 A at 125 Vdc
Initial power-up at 25 °C(1)
InRush current I
≤ 60 A at 125 Vdc
I2t
at locking
≤ 0.15 A2s at 125 Vdc
It
at locking
≤ 0.025 As at 125 Vdc
Acceptable duration of power interruptions at:
  • full load, and
  • minimum input voltage (i.e. 100 Vdc), and
  • full temperature range
≤ 1 ms
Acceptable duration of power interruptions at:
  • full load, and
  • nominal input voltage (i.e. 125 Vdc), and
  • full temperature range
≤ 10 ms
Built-in over-current protection
By internal, inaccessible fuse
Characteristics of the secondary block
Total useful power
40 W on 24V BAC only
3V3_BAC output
Nominal voltage
3.3 Vdc
Nominal current
5 A
Power (typical)
16.5 W
24V_BAC output
Nominal voltage
24 Vdc
Nominal current
1.67 A
Power (typical)
40 W
3V3_BAC and 24V_BAC output protection
Against overload, short circuits and over-voltage
Characteristics of the auxiliary functions
Alarm relay
Normally open dry contacts
Display
Front panel LED
Back-up battery
No
Isolation
Dielectric resistance
at 50 Hz-1mn
Primary/secondary (24V_BAC/3V3_BAC)
1,500 Vrms
Primary/ground
1,500 Vrms
Insulation resistance
Primary/secondary
≥ 100 MΩ
Primary/ground
≥ 100 MΩ
Operating temperature
BMXCPS3522
0...60 °C (32...140 °F)
BMXCPS3522H
-25...70 °C (-13...158 °F) 
1
These values are to be taken into account for the start-up of several devices simultaneously or for establishing the size of the protection devices.