Dell Force10 S50N Series Installing Manual

Also see for Force10 S50N Series: Configuration guide Quick start guide Implementation guide

Contents

30 | Installing Backup Powerw w w . d e l l . c o m | s u p p o r t . d e l l . c o mThe Power Connections on the SwitchThe S50V and S50N contain both AC and DC connections. An AC cable is supplied with the switch (seeSupplying Power on page 27). You can connect one or both of the AC or DC inputs to power. If bothconnections are made and able to supply power, the switch will use them in load-sharing mode.The DC input to the switch uses industry-standard terminal leads on a terminal block. The S50V has fourconnections — ground (FG), -48 volt input, return (RTN), and Current Sharing, as shown in Figure 5-1:Figure 5-1. DC Terminals on the S50VThe S50N has three DC connections — return (RTN), -48 volt input, field ground (FG) — from left toright.Figure 5-2. DC Terminals on the S50NThe S50N-DC has two terminal blocks, each with the same three DC connections as the S50N.WARNING: A qualified electrician should make the DC connections.Installing the Backup DC Power Supply for the S50VThe Redundant Power Supply Unit (PSU) for the S50V is a 470W AC/DC rectifier. It includes rack-mounting hardware, an AC cable, and a cable to connect to the DC power leads on the S50V. The powersupply is oversized to support the Power over Internet (PoE) feature, too large to install in the S50External Power Shelf. Instead, to install the Redundant Power Supply in a rack, complete the steps below