Huawei S37/27 500W AC 02130879 ユーザーズマニュアル

製品コード

02130879

2.1 Power Supply Configuration

This section describes the power supply configuration on the S3700.

PoE Power Supply

The downlink electrical interfaces of S3700 PoE switches provide PoE power. Each interface
provides a maximum of 30 W power and supports a maximum of 100 m power supply distance.
The S3700 can transmit both current and data on a pair of signal cables.

PoE power supply units are classified into two types: 500 W power supply and 250 W power
supply.

Power Supply Unit

PoE Power of total Power
Supply

Device Power of total
Power Supply

500 W power supply

369.6 W

120 W

250 W power supply

123.2 W

120 W

The S3700 PoE switches include:
l

S3700-28TP-PWR-EI:
Each switch provides two power supply unit slots. Each slot accommodates a 500 W or
250 W power supply unit. The power supply configurations are shown in the following
table.

Power Supply Unit

PoE Power of total
Power Supply

Maximum Number of
PoE Interfaces

250 W power
supply

123.2 W

l 802.3af: 8
l 802.3at: 4

500 W power
supply

369.6 W

l 802.3af: 24
l 802.3at: 12

250 W power
supply

246.4 W

l 802.3af: 16
l 802.3at: 8

500 W power
supply

739.2 W

l 802.3af: 24
l 802.3at: 24

S3700-52P-PWR-EI:
Each switch provides two power supply unit slots. Each slot accommodates a 500 W or
250 W power supply unit. The power supply configurations are shown in the following
table.

Quidway S3700 Series Ethernet Switches
Hardware Description

2 Power Supply Unit

Issue 03 (2012-07-20)

Huawei Proprietary and Confidential