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MA5600T, MA5603T, and MA5608T Hardware Description 25

This manual describes the Huawei MA5600T, MA5603T, and MA5608T hardware specifications, such as dimensions, weight, power consumption, capacity, structure, chassis, slots, boards, power modules, and optical modules.
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H801MPWC Board Description

H801MPWC Board Description

The H801MPWC board is a power board with dual DC power inputs. The H801MPWC board leads in the -48 V or -60 V DC power to the device.

Functional Specifications

The H801MPWC board supports the following functions:

  • Two -48 V or -60 V DC power inputs (input voltage range: -38.4 V to -72 V)
  • Filtering and current-limiting for the power input port
  • Detection of power supply availability, and power supply faults
  • Reporting of the protection alarm
  • Indication of power status

Technical Specifications

Please refer to "Power Consumption and Maximum Frame Size of Boards".

Working Principle

Figure 3-47  Working principle of the H801MPWC board

The basic working principle of the H801MPWC board is as follows:

  • The H801MPWC board leads in the -48 V or -60 V power input through the 3V3 power connector, and transfers the power to the current limit protection circuit, then to the filter circuit, and finally to the backplane, supplying power to the subrack and other boards.
  • The detection and reporting circuit checks the protection fuse for any faults, and reports the detection signals to the control board. The control board indicates these detection signals through indicators.
  • The detection and reporting circuit checks for availability of power supply.
  • The E2PROM circuit stores the board manufacture information.
  • The H801MPWC board leads in the 3.3 V power from the backplane to power certain internal chips of the board.

Front Panel Port








The power board indicator



The power board works properly



The power board is faulty

Updated: 2019-03-18

Document ID: EDOC1000060621

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