Section II
General Product Information
006-0007207 MPC-1250DC Guide
Rev F
9 of 44
03/03/2022
Electrical Characteristics
INPUT CHARACTERISTICS
Operating AC Input
Voltage
80 - 265 Vrms*
Frequency
47 - 65 Hz
(47 - 800 Hz Optional)
Input Power Factor
>0.98 at 47 - 65 Hz
>0.97 at 400 Hz
>0.93 at 800 Hz
Maximum Input Current Continuous
20 A
(full load, 85 Vrms)
AC Input Circuit Breaker Rating
25 A
(* Power Derating to 80 % below 90 Vrms)
Operating DC Input
Voltage
22-33 V
Continuous Maximum Input Current
62 A (full load, 22 V)
Transient Maximum Input Current
75 A
Reverse Polarity Protection
-60 V
OUTPUT CHARACTERISTICS
Output Power Continuous
1250 W
Voltage Setpoint Accuracy
± 3 %
Voltage Regulation (Over Load & Temperature) ± 5 %
DC Output - Fully Regulated
28 V Option
Voltage Setpoint (Nominal)
28 V
Operating Output Current Range
0 - 45 A
Overload Current Maximum ( < 1 sec)
60 A
Reverse Polarity Protection
None
24 V Option
Voltage Setpoint (Nominal)
24 V
Operating Output Current Range
0 - 52 A
Overload Current Maximum ( < 1 sec)
60 A
Reverse Polarity Protection
None
DC Output - Constant Current
28 V Option
Voltage Setpoint (Nominal)
28 V
Operating Output Current Range
0 - 45 A
Overload Current (Continuous)
47 A
Output Vampire Current - Unpowered
< 2 uA
Reverse Polarity Protection
-60 V
RELIABILITY CHARACTERISTICS MIL-HDBK-217F
MTBF 100 kHrs MIL-217F Ground Benign, Ta=25 °C
ELECTROMAGNETIC CAPABILITY MIL-STD-461F
CE101**
30 Hz - 10 kHz
CE102
10 kHz - 10 MHz
CS101
30 Hz - 150 kHz
CS106
Pulse Transient
CS114
10 kHz - 200 MHz
CS116
10 kHz - 100 MHz
RE101
30 Hz - 100 kHz
RE102
10 kHz - 18 GHz
RS101
30 Hz - 100 kHz
RS103
2 MHz - 40 GHz
** Regarding MIL-STD-461 CE-101, the 50 uH series inductance of a standard LISN
adversely affects the input ripple of the MPC (DC input only). Such a large series
source inductance (50 uH in each power lead) is not generally encountered in a
28 V DC source of such high power rating. Therefore, testing for CE-101 (DC input)
was conducted with 3 different configurations: two using 50 uH LISNs and a 54 mF
capacitor connected across the input to the MPC, and one using 5 uH LISNs for
which no additional capacitor was added.
These configurations all passed CE-101 for all frequencies.
MECHANICAL CHARACTERISTICS
Chassis
Chassis Width
17.00 ”W
Chassis Depth
14.80 ”D
Chassis Height
1.73 “(1U)H
Case Material
Aluminum
Total Weight
22 lbs.
Cooling Exhaust Fans
Sound Pressure Level (SPL)
54 dB(A)
Air Flow
0.67 (m
3
/min) 23.7 CFM
Two fans in system, above specs are for each fan separately.
MECHANICAL CONNECTORS
Connectors
AC Input Connector
MS3470L14-4P
User I/O Ports
HD DB15 Female
Configuration I/O Port
HD DB15 Male
Ethernet Port
Amphenol RJF22N00,
Code B
DC Input Connector
MS3470L18-8P
DC Output Connector
MS3470L18-8S
ENVIRONMENTAL CHARACTERISTICS MIL-STD-810G
Temperature Methods 501.5, 502.5
Operating Temperature
-40 °C to 70 °C
1
Storage Temperature
-40 °C to 70 °C
Altitude Method 500.5
Operating
0 - 18,000 ft
Non-operating
0 - 40,000 ft
Environmental Tests
Shock/Drop
Method 516.6, Procedures 1,4,6
Temperature Shock
Method 503.5, Procedure 1
Vibration
Method 514.6, CAT 5, 7, 8, 9, 24
Fungus
Method 508.6
Salt Fog
Method 509.5
Sand and Dust
Method 510.5, Procedures 1,2
Rain
Method 506.5 Procedure 1
Humidity
Method 507.5 Procedure 2
Mechanical Vibrations of
Method 528 Procedure 1
Shipboard Equipment
1
100 % rated power at 55 °C, 0 % rated power at 70 °C.
Derate linearly.