Huawei SE2900 - Pem

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.
12
Item
Specifications
Humidity

Long-term operating humidity: 5% RH to
85% RH (non-condensing)

Short-term operating humidity: 5% RH to
95% RH (non-condensing)

Storage humidity: 10% RH to 95% RH
(non-condensing)
Altitude
-60 m to +4000 m (-196.85 ft to +13123.20 ft)
Short term means that the consecutive working period is not more than 96 hours and that the cumulative
working period over a year is not more than 15 days.
1.3.1 PEM
Functions
Table 1-5 describes the functions of the power entry module (PEM).
Table 1-5 PEM functions
Function
Description
Power supply

Supplies power to devices in the subrack.

Supports wide input voltage range.
Power
distribution
monitoring

Detects the installation status and type of PEMs.

Provides the indicators on the panel to indicate PEM status.

Detects the voltage and power of the subrack.

Detects the status of the circuit breakers and surge protection circuits.

Detects the PEM temperature.

Reports voltage, current, and power information in real time.

Implements the electronic label function.
Protection

Implements surge protection, short circuit protection, and
over-current protection.

Prevents incorrect insertion.
Appearance
Figure 1-10 shows a PEM.