Characteristics of the BMXCPS4022 Redundant Power Supply Module
Original instructions
About us
Introduction
The BMXCPS4022 module is a redundant direct current (24 - 48 Vdc) power supply module.
Altitude Operating Conditions
The characteristics in the table below apply to the BMXCPS4022 and BMXCPS4022H 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
24 - 48 Vdc
Voltage range
19.2 - 62.4 Vdc
Nominal current consumption
1.9 A at 24 Vdc
1.0 A at 48 Vdc
Initial power-up at 25 °C(1)
InRush current I
≤ 60 A at 24 Vdc
≤ 60 A at 48 Vdc
I2t
at locking
≤ 0.4 A2s at 24 Vdc
≤ 1.9 A2s at 48 Vdc
It
at locking
≤ 0.05 As at 24 Vdc
≤ 0.08 As at 48 Vdc
Acceptable duration of power interruptions at:
  • full load, and
  • full temperature range
≤ 10 ms
Acceptable duration of power interruptions at:
  • 18 W load, and
  • 20.4 Vdc input voltage, and
  • temperature range 0 °C to maximum
≤ 10 ms
Built-in over-current protection
By internal, inaccessible fuse
Characteristics of the secondary block
Total usable 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
Maximum Dissipated Power
8.5 W
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
≥ 10 MΩ
Primary/ground
≥ 10 MΩ
Operating temperature
BMXCPS4022
0...60 °C (32...140 °F)
BMXCPS4022H
-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.