Emerson MPR15 Series - Manual (Page 19)

Specifications 19
25A Switch Mode Rectifier  NT5C06B / C Installation and User Manual
Acoustical noise
The rectifier does not produce sound levels above 60 dB with "A"
weighting measured 1.5 m (5 ft.) above the floor and 0.5 m (2 ft.) from
the rectifier, while operating at no load, partial load, or full load.
Efficiency and power factor
Efficiency is 88% at nominal input voltage of 208 V and maximum
output load of 25 A at 54 V DC.
Power factor is 0.60 at a nominal voltage of 208 V AC and a maximum
load of 25 A with 0.5 ohm line impedance.
Reliability
The rectifier has a mean time between failures (MTBF) greater than
120,000 hours (Bellcore spec. TR-NWT-000057) under normal
operating conditions, at 30°C.
Heat dissipation
The maximum heat dissipation is 150 W at -56 V and 25 A load
(1 x MPR25).
Electromagnetic Interference (EMI)
The rectifier meets FCC part 15, sub-part B for Class A digital devices.
Environmental
Operating
A two- inch airflow clearance is required at the front and rear of the
rectifier. Consult Astec for applications requiring less than a two-inch
clearance.
The rectifier will operate satisfactorily under the following
environmental conditions:
Temperature: MPR15E: 0 to 50˚ C (32 to 122 F)
MPR15EX:- 40 to 50 C (-40 to 122 F)
MPR25E: 0 to 65 C (32 to 149 F)
MPR25EX: -40 to 65 C (-40 to 149 F)