Dell PowerEdge R750 Installation and Service Manual

Wiring instructions for a DC power supply unit

Your system supports up to two –(48–60) V DC power supply units (PSUs).

Input requirements

NOTE:对于使用 -(48-60) V DC 电源装置 (PSU) 的设备，必须由合格的电工执行与 DC 电源连接相关的所有工作并安全接地。请不要尝试亲自连接至直流电源或安装地线。所有电气布线必须遵从适用的当地或国家/地区规范和惯例。任何未经 Dell 授权的服务所导致的损坏均不在保修范围之列。请阅读并遵循产品附带的所有安全说明。

CAUTION:Wire the unit with copper only, unless otherwise specified, use only 10 American Wire Gauge (AWG) wire rated minimum 90ºC for source and return. Protect the –(48–60) V DC (1 wire) with a branch circuit over-current protection rated 50 A for DC with a high interrupt current rating.

CAUTION:Connect the equipment to a –(48–60) V DC supply source that is electrically isolated from the AC source (reliably grounded –(48–60) V DC SELV source). Ensure that the –(48–60) V DC source is efficiently secured to earth (ground).

NOTE:A readily accessible disconnect device that is suitably approved and rated shall be incorporated in the field wiring.

Supply voltage: –(48–60) V DC
Current consumption: 32 A (maximum)

Kit contents

Dell part number 6RYJ9 terminal block or equivalent (1)
#6-32 nut equipped with lock washer (1)

Required tools

Wire-stripper pliers capable of removing insulation from size 10 AWG solid or stranded, insulated copper wire.

NOTE:Use alpha wire part number 3080 or equivalent (65/30 stranding).

Required wires

One UL 10 AWG, 2 m maximum (stranded) black wire [–(48–60) V DC].
One UL 10 AWG, 2 m maximum (stranded) red wire (V DC return).
One UL 10 AWG, 2 m maximum, green with a yellow stripe, stranded wire (safety ground).

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