Huawei SE2900 - Ac Psu

HUAWEI SE2900 Session Border Controller
Hardware Description
1 Service Processing Device
Issue 01 (2016-01-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
24
1.4.1 AC PSU
Functions
Table 1-15 describes the functions of the AC power supply unit (PSU).
Table 1-15 AC PSU functions
Function
Description
Power supply

Supports AC and high-voltage DC power inputs, and converts AC
input power into DC output power.

Supplies DC power to devices in the subrack.

Supports current equalization.
Power
distribution
monitoring

Detects the AC PSU installation status, AC PSU type, and power
input.

Provides indicators on the panel to indicate AC PSU status.

Supports queries on input/output voltage and current.

Supports queries on input power and maximum output power.

Supports queries on the electronic label, temperature, and version of
the AC PSUs.

Detects the fan fault of the AC PSUs.
Protection

Supports input under-voltage and over-voltage protection.

Supports input overcurrent and short circuit protection.

Supports output overvoltage protection.

Supports output short circuit current restriction protection.

Supports overheat protection.

Prevents incorrect insertion.
Appearance
Figure 1-20 shows a AC PSU.