PDC-650WA-BE

The PDC-650WA-BE is a specific power module for Huawei network switches. It is not a switch model itself but a crucial component designed to provide both system power and Power over Ethernet (PoE) capabilities, particularly in environments with DC power infrastructure.

Here are the key details about the PDC-650WA-BE:

• Type: 650W DC PoE Power Module. The “PDC” prefix indicates a Power over Ethernet DC module, and the “650WA” specifies its total wattage.
• Function: It serves two main purposes:
  1. System Power: Provides the necessary power to operate the switch’s internal components.
  2. PoE Power: A key feature is its ability to supply power to connected devices (like IP phones, wireless access points, or surveillance cameras) over the Ethernet cable. It supports the PoE (802.3af) and PoE+ (802.3at) standards.
• Power Output: The module has a total maximum output power of 650 W. This is split between system power and PoE power. The PoE power output is rated at 369.6 W.
• Compatibility: This power module is primarily designed for use with specific models within the Huawei S5700 and S6700 series switches, particularly those with a PoE power architecture and in DC-powered environments. Some confirmed compatible models include:
  • S5720-series switches that support PoE.
  • S6720-32C-PWH-SI
  • S6720-56C-PWH-SI
• Input Specifications:
  • Rated Input Voltage: -48 V DC to -60 V DC.
  • Maximum Input Voltage: -38.4 V DC to -72 V DC.
• Key Features:
  • Hot-swappable: This is a critical feature for high-availability networks, as it allows the module to be replaced or added without powering down the switch, thus preventing service interruptions.
  • Redundancy Support: Compatible switches have dual power supply slots. By installing two of these modules, you can achieve 1+1 power redundancy, ensuring that if one module fails, the second one can take over without interrupting service.
  • Comprehensive Protection: The module includes built-in protection mechanisms against input undervoltage/overvoltage, output overvoltage/overcurrent, short-circuit, and over-temperature to safeguard the switch and connected devices.

In summary, the PDC-650WA-BE is a specialized 650W DC power module from Huawei that is a crucial component for powering switches and providing PoE functionality in DC-powered network environments, especially within the S5700 and S6700 series.