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Hardware Description

NE05E and NE08E V300R003C10SPC500

This is NE05E and NE08E V300R003C10SPC500 Hardware Description
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
27S48D Power System

27S48D Power System

The 27S48D power system converts input +24 V DC power to -53.5 V DC power and supplies power to the NE.

Appearance

Figure 7-14 shows the appearance of a 27S48D power system.

Figure 7-14 Appearance of a 27S48D power system

Functions

The 27S48D power system accepts power in the range of 19 V to 30 V, and outputs -53.5 V rated voltage and 7 A rated current.

In terms of electrical performance and structure, the 27S48D power system is divided into two independent -53.5 V/5.6 A power modules. They are separated using an output diode and installed in the same cabinet. Their currents are combined into a 7 A one through power distribution, and the 7 A current is supplied to equipment. The 27S48D power system provides functions such as short-circuit protection, overcurrent protection, output overvoltage protection, and overheat protection.

Indicator

Table 7-17 lists the meaning of each 27S48D power indicator status.

Table 7-17 Indicator description

Indicator

Color

Normal State

Description

RUN

Green

On

When the module receives 24 V power, the indicator is on and green.

STAND-BY

Yellow

Off

When there is no output power, the indicator is on and yellow.

ALM

Red

Off

When protection is triggered or a fault occurs, the indicator is on and red.

Interface

Table 7-18 lists the types and functions of 27S48D power interfaces.

Table 7-18 Description of 27S48D power interfaces

Interface Name

Quantity

Description

Remarks

INPUT

2

24 V DC power input interface

Each power module has one input interface to receive power independently.

OUTPUT

6

-48 V DC power output interface

Two terminals are used: NEG(-) and RTN(+). There are altogether six power outputs.

ALM

1

Alarm output terminal

Dry contact output: off (abnormal) or on (normal)

Technical Specifications

Table 7-19 lists the technical specifications of the 27S48D power system.

Table 7-19 Technical specifications of the 27S48D power system

Item

Value

DC power supply

Rated input voltage

24 V (19 V to 30 V) DC

Maximum input current

20 A

DC power supply

Rated output voltage

-53.5 V DC

Output current

7 A

Dimensions (with mounting ears) (H x W x D)

43.4 mm x 482.6 mm x 244 mm

Weight

< 7 kg

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Updated: 2019-01-14

Document ID: EDOC1100058943

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