CHAPTER 12
DC Power Requirements and Specifications
IN THIS CHAPTER
SRX3600 Services Gateway DC Power Supply Electrical Specifications | 83
SRX3600 Services Gateway DC Power System Electrical Specifications | 84
SRX3600 Services Gateway DC Power Cable Specifications | 85
Power Requirements for DC-Powered SRX3600 Services Gateways | 87
SRX3600 Services Gateway DC Power Supply Electrical Specifications
Two types of DC power supply are available. The standard DC power supply has a maximum power output
of 850 W. The enhanced DC power supply has a maximum power output of 1200 W, and also has additional
filters required to meet NEBS and ETSI requirements. The two types of DC power supply are identical in
all other respects. Each DC power supply has a single DC input (-48 VDC and return) that requires a
dedicated 40 A (-48 VDC) circuit breaker. Table 22 on page 83 lists the DC power supply electrical
specifications.
Table 22: DC Power Supply Electrical Specifications
Enhanced DC Power SupplyStandard DC Power SupplyItem
1200 W850 WMaximum output power
–40.5 to –72 VDC–40.5 to –72 VDCDC input voltage
31.3 A @ -48 VDC22.2 A @ -48 VDCDC input current rating
NOTE: Mixing standard and enhanced DC power supplies within the same chassis is not supported.
All installed DC power supplies must be either of standard or enhanced types.
Each DC power supply faceplate displays a single LED to indicate the status of the power supply (see
Table 23 on page 84).
83
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