Installation Guide

Table 496: AC Power Specifications (Models 10925 and 10927) (continued)
Power supply cord gauge 18 AWG (0.75 mm
2
) up to 6 feet or 2 meters
or
16 AWG (1.0 mm
2
) over 6 feet
Eciency
87% at 110 V with full load
88% at 220 V with full load
Table 497: DC Power Specifications (Models 10926 and 10928)
Nominal Input –40 V to –60 V, 18 A
DC Voltage Input Range
–36 to –75 V
Maximum Input Amperages
18 A @ 36 V , 13.5 A @ 48 V
8.5 A @ 75 V
Inrush Current 25 A peak
Inrush Energy 0.625 A
2
S
Minimum wire size 14 AWG (1.5 mm
2
) copper stranded
DC Output
12 V , 45 A/3.3 V , 3.0 A
DC Output Power (W) 550 W
Table 498: Environmental Specifications
Operating temperature 0°C to 45°C (normal operation)
Storage temperature -40°C to 70°C
Operating humidity 20% to 90% relative humidity, non-condensing
Operating altitude Up to 10,000 feet
Operational shock
Frequency Range 5 to 350 Hz, 200 to 2000 Hz PSD: 0.0001g2/Hz
350 to 500 Hz -6dB/Octave, 500 Hz 0.000052 Hz
Acceleration 0.21.0 gRMS (Typical Level)
Duration: 20 min per axis
Summit 550 W Power Supplies for X670-G2 Switches
Summit 550 W power supplies are available in the following models:
• 550 W AC PSU-FB (Model DS550HE-3 )—AC power supply with front-to-back ventilation airflow
• 550 W DC PSU-FB (Model DS550DC-3)—DC power supply with front-to-back ventilation airflow
• 550 W AC PSU-BF (Model DS550HE-3-002)—AC power supply with back-to-front ventilation
airflow
• 550 W DC PSU-BF (Model DS550DC-3-003)—DC power supply with back-to-front ventilation
airflow
Technical
Specifications Summit 550 W Power Supplies for X670-G2 Switches
Summit Family Hardware Installation Guide 639