Dell Force10 S55T Installing the S55 System - Page 38

www.dell.com | support.dell.com DC Power Requirements Parameter Nominal Input Voltage Maximum Power Supply Input Current Maximum System Power Input Specifications -43 to -72 VDC at startup -36 to -72 VDC during normal operation 10 A 135 W IEEE Standards The S55 complies with the following IEEE standards: • 802.3ae 10 Gigabit Ethernet • 802.3ab 1000Base-T • 802.1p L2 Prioritization • 802.1Q VLAN Tagging, Double VLAN Tagging (Q in Q), GVRP • 802.1s Multiple Spanning Tree Protocol • 802.1w Rapid Spanning Tree Protocol • 802.3ad Link Aggregation with LACP • 802.1D Bridging, GARP, GMRP • 802.3x Flow Control • 802.1ac Frame Extension for VLAN tagging • 802.1x Port based Network Access Control Agency Compliance The S55 is designed to comply with the following safety and agency requirements. NEBS (Network Equipment Building Systems) Compliance • Shielded cables must be used for ports 0 - 43.The shields must be grounded at both ends. • Only reverse air flow configurations may be used in a NEBS compliant installation. Use only AC supply S55-PWR-AC-R, DC supply S55-PWR-DC-R and Fan Only S55-FAN-R, Systems S55-44TAC-R and S55-44T-DC-R. • Power supplies and fan modules must be fitted with the S55-PWR-FLTR kits. Fan filters must be replaced on a regular basis. • This equipment is intended to be used with an external second-level 6kV lightning SPD (Surge Protective Device) at the AC input of the building. • For the NEBS compliant installation, AC power connections shall use a SPD (surge protection device) in order to protect the AC power supplies from damage to excessive power line surges. 38 | S55 Specifications