Power Supply Configuration - Huawei Quidway S3700 Series Manual

Quidway S3700 Series Ethernet Switches
Hardware Description

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 current sharing power supply and
250 W current sharing power supply.
Power Supply Unit
500 W current sharing power
supply
250 W current sharing power
supply
The S3700 PoE switches include:
l
l
Issue 02 (2011-11-21)
S3700-28TP-PWR-EI
S3700-28TP-PWR-EI 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
250 W current -
sharing power
supply
500 W current -
sharing power
supply
250 W current 250 W current
sharing power sharing power
supply supply
500 W current 500 W current
sharing power sharing power
supply supply
S3700-52P-PWR-EI
S3700-52P-PWR-EI 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.
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PoE Power
369.6 W
123.2 W
PoE Power
123.2 W
369.6 W
246.4 W
739.2 W
2 Power Supply Unit
Device Power
120 W
120 W
Maximum Number of
Interfaces
l 802.3af: 8
l 802.3at: 4
l 802.3af: 24
l 802.3at: 12
l 802.3af: 16
l 802.3at: 8
l 802.3af: 24
l 802.3at: 24
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