1756-IRT8I参详

1756-IRT8I参详

1756-IRT8I参详

1756-IRT8I参详

通信业的迅速发展·大的推动了通信电源的发展。高频小型化的开关电源及其技术已成为现代通信供电系统的主流。在通信领域中,通常将整流器称为一次电源,而将直流-直流(DC/DC)变换器称为二次电源。一次电源的作用是将单相或三相交流电网变换成标称值为48V的直流电源。当前在程控交换机用的一次电源中,传统的相控式稳压电源己被高频开关电源取代,高频开关电源(也称为开关型整流器SMR)通过MOSFET或IGBT的高频工作,开关频率一般控制在50-100kHz范围内,实现·效率和小型化。近几年,开关整流器的功率容量不断扩大,单机容量己从48V/12.5A、48V/20A扩大到48V/200A、48V/400A。

因通信设备中所用集成电路的种类繁多,其电源电压也各不相同,在通信供电系统中采用高功率密度的高频DC-DC隔离电源模块,从中间母线电压(一般为48V直流)变换成所需的各种直流电压,这样可大大减小损耗、方便维护,且安装、增加非常方便。一般都可直接装在标准控制板上,对二次电源的要求是高功率密度。因通信容量的不断增加,通信电源容量也将不断增加。

22B-B017N104   22

TSXPSY3610    1-------

TSXDEY16D2  1    -------

TSXCTY2C   1-------

TSXAST800  1--------

TSXASY800-------

TSXAST410  1-------

TSXASY410-------

SL-350   35

140CPU31110   37985-------

6EP1334-1LB00   13个

2090-UXCK-D15  面价539   1个

6RA7018-6DS22-0-Z=G95+K00+K01+K11+S00--------

20AD011A3NYYAEG0   2 面价25175-------

6AV2124-1DC01-0AX0   1

IGBT+驱动FS450R12KE3/AGDR-71C --------

A430L3-10    1

6RX1800-0AS01  5 

6DL1134-6TH00-0PH1  

6DL1131-6BL00-0PH1

6DL1193-6TP00-0DH1  各一只

A5E00346714-32/05  2个

ETC750200-LZS3001数量20

ETC740112-LZS8001数量10

IIATB02数量2

6ES7515-2AM02-0AB0   3

6ES7158-3AD10-0XA0   1

6ES7516-3AN02-0AB0   1

6ES7517-3AP00-0AB0   1

6ES7522-1BH01-0AB0   2

6ES7550-1AA00-0AB0   1

6ES7924-0CA20-0AC0   1

6ES7193-6AR00-0AA0   3

6GK5008-0BA10-1AB2   1

6DL1193-6TP00-0BH1   3

6DL1193-6GA00-0NN0   3

6ES7550-1AA01-0AB0   1

6ES7155-5AA00-0AC0   1

6GK1901-0DB20-6AA0   20

6ES7718-1BB10-0AC2  1

149986-01  1

149992-01  1

SQUARE D CIRCUIT BREAKER CAT#QGL32225 225A/240V/3POLE

Square D Model: FA36100 Molded Case Circuit Breaker 

Square D I-Line PQ-4606 Ser1 Busway Switch 3PH 480v 60A

Square D Power Pact S33931 I-Line 1200 amp 240/480 volt

SQUARE D COMPANY NEMA SIZE 2 STARTER 8536-SDO1 (2336)

Square D Type: SK500G1, Class 9070 Transformer Diconnect. 600 VAC Max W

Used Clean Square D I line breaker KA26225BC 600 volt

Square D 8502SDO1V02 Ser A Contactor NEW in Box

1 NEW SQUARE D 8538-SBG-13 DISCONNECT SWITCH Q9-2

8536SEO1S Square D Nema Size 3 Starter!

In Great Shape! Super Clean & Fully Functional!

Square D 9012 GCW-23 Ser C Pressure Control Switch NEW

1 USED SQUARE D DARK GREEN FACE KAL26175 CIRCUIT BREAKER

NEW SQUARE D SIZE 0 FUSIBLE COMBINATION MOTOR STARTER 

SQUARE D NEMA SIZE3, 50 HP MAX MOTOR STARTER CLASS 8536, TYPE# SE01

Square D H363RB Heavy Duty Safety Switch 600V 100A

SQUARE D Pressure Switch GCW-23 Class 9012 Series C Type 4,4X,13 encl. NIB NOS

Square D Heavy Duty Safety Switch M# HU361AWKEI ~NIB NEW SURPLUS~

Square D 30 AMP 3P BREAKER FH36030CBA NEW STYLE QQ-37D

Square D 40 AMP 3P BREAKER FH36040CBA NEW STYLE QQ-37F

SQUARE D 8903-LO40-V02 NSPP 8903LO40V02

SQUARE D 8536SBO2S STARTER W/ TYPE-1 ENCLOSURE ***NNB***

HDA36035 SQUARE D Circuit Breaker 35A 3P 600V I-LINE - NEW -

SQD Square D Q1B31001021 Circuit Breaker, Black Face

NEW SQUARE D 9070T500D32 TRANSFORMER 9070-T500D32

13 NEW SQUARE D PADLOCK ATTACHMENTS 9001K7 SERIES H

SQUARE-D MOTOR LOGIC PLUS II 9065 SP246 OVERLOAD RELAY

EJB34030 SQD SQUARE D Circuit Breaker 30A 1P 277/480V EJB - NEW

TELEMECANIQUE SQUARE D AC DRIVE CONTROLLER ATV16U18N4 (1553)

New! Square D 9002 AW-119 Two Stage Foot Switch "Bigfoot"

SQUARE D DU323RB NSFP DU323RB

SQUARE D KAL26175 USPP KAL26175

Square D 8430 MPD Phase Failure Relay Series A - New, No Box

SQUARE D EJB24020 NSPP EJB24020

FAL 3605016M MAG GARD 3 POLE 50 AMPS CIRCUIT BREAKER

SQUARE D 8502-SCG-3-V03 NSFP 8502SCG3V03

SQUARE D 2510KW-2B NSFP 2510KW2B

SQUARE D 2510-KW2C NSFP 2510KW2C