Huawei 02130879 Fiche technique télécharger pdf (Page 19)

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

250 W power

supply

246.4 W

l 802.3af: 16

l 802.3at: 8

500 W power

supply

500 W power

supply

739.2 W

l 802.3af: 24

l 802.3at: 24

l 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

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