中兴PSU-AC,PSU-AC,中兴开关电源中兴PSU-AC嵌入式电源系统，中兴PSU-AC开关电源，中兴PSU-AC高频开关电源48v.

中兴PSU-AC嵌入式电源系统，中兴PSU-AC开关电源，中兴PSU-AC高频开关电源48v.

中兴PSU-AC嵌入式电源系统，中兴PSU-AC开关电源，中兴PSU-AC高频开关电源48v.

中兴PSU-AC开关电源价格报价 1u插箱双模块，一个模块15A.

PSU-AC PSUAC 1U插槽 输入15A -48V 输出100V-240V EPS30-4815AF ZTE中兴通信电源整流模块

基于项目的重要地位及承担的重要职责，山东移动在项目实施中坚持高起点、高标准建设，要求将项目建成山东省的数据中心，由此也对基础设施产品的应用提出了极高的要求。山东移动要求应用产品具备的技术优势以及一流的性能品质，尤其在可靠性和节能性上必须达到项目预期标准。

在产品选型阶段，维谛(Vertiv)凭借在数据中心领域强大的品牌影响力和出色的市场口碑，以及产品在山东移动多个项目中的良好运行，*终赢得了山东移动的信赖，分别为济南数据中心和青岛云数据中心建设提供了智能低压配电系统、UPS供电系统、列间空调系统及动环监控系统。其中，济南数据中心在列间空调系统上全线采用了维谛(Vertiv)的产品，同时，在青岛云数据中心应用的EPK系列低压智能配电解决方案，配置了维谛(Vertiv)*新推出的PTMS(Power Train Management System)全功率链管理系统，堪称该项目应用中的创新亮点。

同时，PEX4.0系统具有更高可靠性、更高节能性、全寿命低成本以及大大提高全年能效比(AEER)的显着特点。机组采用了整体模块化框架结构设计，不仅优化了气流组织，而且易拆解和方便搬运及采用不同模块拼装实现不同的制冷量，侧面及背面不需要维护空间，前面只需要900mm维护空间。

超高能效是PEX4.0系统的优异特性。该系统全系列为变频调速控制，采用了变频压缩机、EC风机、变频室外机、EC冷凝风扇、室内和室外均为V型换热器，比普通风冷机组的能效大幅提升80%，全年可减少运行电量33.8%。据测算，全系列机组在额定状态下即可达到4.0以上的能效比，更可在较高的室外温度下开启自然冷却，从而可帮助数据中心实现PUE低于1.2的目标。

一．开关电源的控制结构：

  一般地，开关电源大致由输入电路、变换器、控制电路、输出电路四个主体组成。

  如果细致划分，它包括：输入滤波、输入整流、开关电路、采样、基准电源、比较放大、震荡器、V/F转换、基极驱动、输出整流、输出滤波电路等。

  实际的开关电源还要有保护电路、功率因素校正电路、同步整流驱动电路及其它一些辅助电路等。

  下面是一个典型的开关电源原理框图，掌握它对我们理解开关电源有重要意义。

控制电路

图2-1：开关电源的基本结构框图

根据控制类型不同，PM（脉冲调制）电路可能有多种形式。这里是典型的PFM结构。

二．开关电源的构成原理：

（一）输入电路：

  线性滤波电路、浪涌电流抑制电路、整流电路。

  作用：把输入电网交流电源转化为符合要求的开关电源直流输入电源。

1．线性滤波电路：

  抑制谐波和噪声。

2．浪涌滤波电路：

    抑制来自电网的浪涌电流。

3．整流电路：

    把交流变为直流。

    有电容输入型、扼流圈输入型两种，开关电源多数为前者。

（二）．变换电路：

  含开关电路、输出隔离（变压器）电路等，是开关电源电源变换的主通道，完成对带有功率的电源波形进行斩波调制和输出。

  这一级的开关功率管是其核心器件。

1．开关电路

驱动方式：自激式、他激式。

变换电路：隔离型、非隔离型、谐振型。

功率器件：*常用的有GTR、MOSFET、IGBT。

调制方式：PWM、PFM、混合型三种。PWM*常用。

2．变压器输出

  分无抽头、带抽头。半波整流、倍流整流时，无须抽头，全波时必须有抽头。

（三）．控制电路：

  向驱动电路提供调制后的矩形脉冲，达到调节输出电压的目的。

基准电路：提供电压基准。如并联型基准LM358、AD589，串联型基准AD581、REF192等。

采样电路：采取输出电压的全部或部分。

比较放大：把采样信号和基准信号比较，产生误差信号，用于控制电源PM电路。

V/F变换：把误差电压信号转换为频率信号。

振荡器：产生高频振荡波。

基极驱动电路：把调制后的振荡信号转换成合适的控制信号，驱动开关管的基极。

（四）．输出电路：

  整流、滤波。

  把输出电压整流成脉动直流，并平滑成低纹波直流电压。输出整流技术现在又有半波、全波、恒功率、倍流、同步等整流方式。

华为48v开关电源华为室内开关电源通信电源1

石家庄华为通信电源48v高频开关电源2

华为嵌入式智能高频开关电源3

2米华为48v电源600a高频开关电源室内电源柜4

华为etp4890a2华为etp4890通信电源5

ps48600-3b/2900 R48-2900U R48-3200e

艾默生PS48600-3B-2900_V1.5

艾默生PS48600-3B/2900|艾默生通信电源系统_PS48600-3B/2900

中兴ZXDU68 T601开关电源价格,厂家,通信电源

中兴ZXDU68 Z201嵌入式通信电源ZXDU68 Z201

华为UPS5000-E-320K-F320,华为320kvaUPS价格,厂家,通信

中兴ZXDU68 T601智能开关电源ZXDU68 T601

华为TP48600B技术参数/报价

中兴ZXDU68 T601机柜报价详细参数

华为W2PSA5080服务器模块

中兴室内电源机柜ZXDU68T601

中兴ZXDU68 S601高频开关电源机柜ZXDU68 S601

中兴ZXDU68 W201室外通信电源机柜

华为MTS9000A2.0室外一体化电源柜

艾默生NetSure801分离式高频开关综合柜

【图】华为壁挂式传输设备RRU3938-900报价及参数_库存通讯产品

艾默生NetSure731 A41技术参数/报

华为R4815N1整流模块报价及参数

维谛/艾默生NetSure801开关电源报价及参数

华为TP48600B开关电源柜技术参数/报价

中达电通MCS3000D-48-50A室内48v一体化电源机柜

华为MTS9000A 2.0室外电源机柜

艾默生NetSure701A41-S3|嵌入式通信电源系统_48V通信电源系统Netsure731cc2X2批发_Netsure731cc2X2供应商艾默生UBI3KVA-220F逆变器LTS32A单项自动切换开关艾默生|艾默生LTS32A单项自动切换开关_LTS..48V10A通信电源艾默生R48-1000整流模块PS48300/1800-X3艾默生通信电源EDU01|艾默生直流配电模块_EDU01L 艾默生直流配电模块...3B/2900】其他批发价格,厂家,图片Netsure211c23艾默生|艾默生Netsure211c23电源_Netsure211c23艾默生PS48600-3B/2900|艾默生通信电源系统_PS48600-3B/2900 ...R48-2900U 艾默生通信电源 R48-2900U_R48-2900U 艾默生R48-2900U 智能充电模块|艾默生ER22020/T|高频开关电源_电力电源模块 艾默生...Netsure731cc2艾默生|艾默生Netsure731cc2电源系统_Netsure731cc2..PS48300/1800-X3艾默生通信电源艾默生R48-2900U|R48-2900U艾默生电源艾默生R48-1000整流模块艾默生HD48100-5通信电源_HD48100-5 艾默生HD48100-5Netsure531c42艾默生|艾默生Netsure531c42电源系统_Netsure531c42艾默生HD22010-3|艾默生HD22010-3价格_充电模块 

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华为ETP4830-A1嵌入式电源

中兴通信电源,中兴高频开关电源,中兴48v开关电源,

中兴开关电源模块,中兴开关电源监控,中兴BBU,中兴RRU,

中兴逆变器,室外一体化机柜,48V开关电源 ,中兴分立式电源 ,

中兴室外一体化机柜,艾默生开关电源总代理,中兴开关电源,

华为开关电源总代理 ,通信电源,开关电源,中兴电源模块,

中兴ZXDU68T601,中兴ZXDU68T301,中兴ZXDU58S301,中兴ZXDU58S601,

中兴ZXDU58W ,

中兴电源机柜,中兴开关电源总代理 

产品详细介绍

1、etp4830-a1概述

华为etp4830-a1是一款-48v嵌入式通信电源系统，主要适用于无线基站、接入网、传输网、企业通讯网络等场作为通信电源之用。etp4830-a1输出电压：dc-48v，输出电流：30a，输出功率：2000w。采用1u高设计，适用于19英寸机架或嵌入式机柜安装等多种安装方式。

2、特点

85～300vac超宽交流电压输入范围

整流模块工作温度范围达-40～+75℃

支持热插拔技术，安装维护便利

标准安装结构设计，通用性强

电源结构紧凑，节省空间，节省安装成本

高效整流模块效率96%以上，节能减排

完善的模块休眠功能，进一步提高系统效率

智能化蓄电池管理和电池保护，延长电池使用寿命

支持环境监控，可通过干接点、串口或网络接口实现远程管理

3、etp4830-a1技术参数表

系统参数

尺寸

442（宽）×255（深）×43.6（1u，高）

重量

≤8kg

散热方式

自然散热

安装方式

19英寸机架或者嵌入式机柜安装

走线方式

前进线，前出线

维护方式

前操作，前维护，支持模块级更换

防护等级

ip20

交流配电

输入模式

单相/三相/双火线

输入电压

220vac/110vac

输入频率

45~66hz，额定值：50hz/60hz

防雷

5ka/10ka，8/20us

直流配电

输出电压

42~58v dc， 额定值： 53.5v dc

功率

2kw（2×1000w）

电池支路

1×20a（熔丝）

负载支路

2×20a（熔丝）

环境

运行环境温度

-40℃~+70℃

存储温度

-40℃~+70℃

运行环境湿度

5%~95%（无凝露）

海拔

0~4000m

ETP4830-A1 , 华为ETP4830-A1 , 华为通信电源 , 华为开关电源

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ZTE PSU-AC embedded power system, ZTE PSU-AC switching power supply, ZTE PSU-AC high frequency switching power supply 48V.

ZTE PSU-AC embedded power system, ZTE PSU-AC switching power supply, ZTE PSU-AC high frequency switching power supply 48V.

ZTE PSU-AC embedded power system, ZTE PSU-AC switching power supply, ZTE PSU-AC high frequency switching power supply 48V.

ZTE PSU-AC switch power price quotation 1U ｉnsert box dual module, a module 15A.

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PSU-AC PSUAC 1U slot input 15A -48V output 100V-240V EPS30-4815AF ZTE ZTE communication power rectifier module

Based on the important status ａnd important responsibilities of the project, the Shandong mobile will adhere to the high starting point ａnd high standard construction in the project implementation, ａnd require the project to be the best data center in Shandong Province, ａnd the high requirements for the application of the infrastructure products are also put forward. Shandong mobile requires that the application products have the leading technical advantages ａnd first-class performance quality, especially in reliability ａnd energy saving, which must meet the project expectations.

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In the stage of product selection, Vertiv has won the trust of Shandong mobile, by virtue of its strong brand influence ａnd excellent market reputation in the field of data center, ａnd the good operation of products in many projects in Shandong. It provides intelligent low-voltage distribution for the construction of the Ji＇nan data center ａnd the construction of the Qingdao cloud data center. System, UPS power supply system, inter row air conditioning system ａnd mobile ring monitoring system. Among them, the Ji＇nan data center adopts the product of Vertiv in the inter column air conditioning system, ａnd the EPK series low-voltage intelligent distribution solution for the application of the Qingdao cloud data center is configured with the latest PTMS (Power Train Management System) full power chain management system, which is called the application of the project. The biggest bright spot in the innovation.

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At the same time, the PEX4.0 system has the characteristics of higher reliability, higher energy efficiency, full life ａnd low cost, ａnd greatly improves the annual energy efficiency ratio (AEER). The unit adopts the overall modular frame structure design, which not only optimizes the air flow organization, but also easy to disassemble ａnd facilitate the handling ａnd use of different modules to achieve different refrigerating capacity. The side ａnd the back do not need to maintain space, the front only needs 900mm maintenance space.

Ultra high energy efficiency is one of the outstanding characteristics of PEX4.0 system. The system is controlled by variable frequency speed control. The variable frequency compressor, EC fan, frequency conversion outdoor machine, EC condensing fan, indoor ａnd outdoor are all V type heat exchangers. The energy efficiency of the common air cooling unit is greatly increased by 80%, ａnd the running quantity can be reduced by 33.8% in the year. It is estimated that the whole series of units can reach more than 4 energy efficiency at rated state, ａnd can open natural cooling at higher outdoor temperature, thus helping the data center to achieve the target of less than 1.2 PUE.

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1. Control structure of switching power supply:

In general, switching power supply is composed of four main parts: input circuit, converter, control circuit ａnd output circuit.

If it is carefully divided, it includes input filtering, input rectification, switching circuit, sampling, reference power supply, comparative amplification, oscillators, V/F conversion, base drive, output rectifier, output filter circuit ａnd so on.

The actual switching power supply also has protection circuit, power factor correction circuit, synchronous rectification drive circuit ａnd other auxiliary circuits.

The following is a typical schematic diagram of switching power supply. It is important for us to understand the switching power supply.

control circuit

Figure 2-1: the basic structure diagram of the switching power supply

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1527484611966240.png

According to different control types, PM (pulse modulation) circuit may have many forms. This is a typical PFM structure.

Two. The principle of the switching power supply:

(1) input circuit:

Linear filter circuit, surge current suppression circuit, rectifier circuit.

Function: convert the input grid AC power into the DC input power of the switching power supply that meets the requirements.

1. linear filter circuit:

Suppression of harmonics ａnd noise.

2. surge filter circuit:

The surge current from the power grid is suppressed.

3. rectifier circuit:

Turn communication into direct current.

There are two types of capacitor input type ａnd choke input type, ａnd the switching power supply is mostly the former.

(two). Transform circuit:

The switch circuit, the output isolation (transformer) circuit, etc. are the main channels of the switching power supply conversion, ａnd complete the chopping modulation ａnd output of the power source waveform.

The switch power tube at this level is its core device.

1527484613718268.jpg

1. switch circuit

Driving mode: self excitation, he exciting.

Transformation circuit: isolated, non isolated, resonant type.

Power devices: most commonly used are GTR, MOSFET ａnd IGBT.

Modulation methods: PWM, PFM, mixed type three. PWM is the most commonly used.

2. transformer output

No taps or taps. Half wave rectification ａnd double current rectification do not need to tap. Full wave must be tapped.

(three). Control circuit:

The modulated rectangular pulse is supplied to the driving circuit to achieve the purpose of regulating the output voltage.

Reference circuit: supply voltage reference. For example, parallel reference LM358, AD589, series reference AD581, REF192 ａnd so on.

Sampling circuit: take all or part of the output voltage.

Comparison magnification: comparing the sampled signal ａnd the reference signal to produce the error signal, it is used to control the PM circuit of the power supply.

V/F transform: converting the error voltage signal to the frequency signal.

Oscillator: produce high frequency oscillating wave.

Base drive circuit: the modulated oscillating signal is converted into an appropriate control signal to drive the base of the switch tube.