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S2700 Series Switches Hardware Description

This document provides an overall description of the S2700 hardware, helping you obtain detailed information about each chassis, cable, and optical module.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
DC Power Cable

DC Power Cable

Types of DC Power Cables

DC power cables include a -48 V power return cable and a -48 V power cable. The -48 V power return cable is connected to a terminal marked RTN (+), and the -48 V power cable is connected to a terminal marked NEG (–).

Appearance and Structure

Figure 7-22 and Figure 7-23 show the appearance and structure of the 48 V power return cable and -48 V power cable.

Figure 7-22 Appearance of a -48 V power return cable

Figure 7-23 Appearance of a -48 V power cable

NOTE:
A -48 V power return cable is black and is connected to the RTN(+) terminal of the DC power supply. A -48 V power cable is blue and is connected to the NEG(-) terminal of the DC power supply.

Connection

A DC power cable is connected to a DC power module with OT terminals as follows:

  • The OT terminal is connected to the input port on the DC power module of the device.
  • The cord end terminal is connected to an external power module.
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Updated: 2019-08-19

Document ID: EDOC1000027458

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