Summit Family Hardware Installation Guide

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

Specifications for 550 W Power Supplies for the X670-G2

The following tables list the specifications for the 550 W AC PSU-FB (Model 10925) and 550 W AC PSU-BF (Model 10927) AC power supplies for use in X670 and X770 series switches.

Table 1. Physical Specifications
Dimensions	Height: 1.57 inches (4.0 cm) Width: 3.07 inches (7.8 cm) Depth: 13.31 inches (33.8 cm)
Weight	AC model 3.64 lb (1.65 kg) DC model 2.58 lb (1/17 kg)

Table 2. DC Model Power Specifications
Nominal input	-48 to -60 VDC, 24 A
DC Voltage input range	-35 to -75 V
Inrush Current	21 A peak
Maximum wire size	14 AWG (1.5 mm2 copper stranded).
DC Output	12 V, 45 A/3.3V, 3A
DC Output Power (W)	550 W

Table 3. 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 DC Power Supplies for X670 and X770 Series Switches

The following tables list the specifications for the 550 W DC PSU-FB (Model 10926) and 550 W DC PSU-BF (Model 10928) power supplies for use with the Summit X670 and Summit X770 series switches.


Dimensions	Height: 1.5 inches (3.8 cm) Width: 3.1 inches (7.8 cm) Depth: 13.3 inches (33.8 cm)
Weight	3.22 lb (1.46 kg)

Table 4. Power Specifications
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 A²S
Minimum wire size	14 AWG (1.5 mm²) copper stranded
DC Output	12 V , 45 A/3.3 V , 3.0 A
DC Output Power (W)	550 W

Table 5. 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

Specifications for 550 W Power Supplies for the X670-G2

Summit DC Power Supplies for X670 and X770 Series Switches