Datasheet > LT1240-7DFB1

LT1240-7DFB1

更新时间： 2024-01-26 00:32:52

品牌	Logo	应用领域
BEL		/
页数	文件大小	规格书
33页	838K
描述
AC-DC Regulated Power Supply Module, 1 Output, 400W, CASE T01, MODULE

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中文翻译

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技术参数
数据手册

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LT1240-7DFB1 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	MODULE	包装说明：	,
Reach Compliance Code：	compliant	ECCN代码：	EAR99
风险等级：	5.79	Is Samacsys：	N
模拟集成电路 - 其他类型：	AC-DC REGULATED POWER SUPPLY MODULE	最大输入电压：	255 V
最小输入电压：	85 V	JESD-30 代码：	R-XXMA-X
JESD-609代码：	e0	功能数量：	1
输出次数：	1	最高工作温度：	71 °C
最低工作温度：	-25 °C	最大输出电压：	28.25 V
最小输出电压：	25.25 V	标称输出电压：	27.25 V
封装主体材料：	UNSPECIFIED	封装形状：	RECTANGULAR
封装形式：	MICROELECTRONIC ASSEMBLY	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified	表面贴装：	NO
温度等级：	COMMERCIAL EXTENDED	端子面层：	TIN LEAD
端子形式：	UNSPECIFIED	端子位置：	UNSPECIFIED
处于峰值回流温度下的最长时间：	NOT SPECIFIED	最大总功率输出：	400 W
微调/可调输出：	YES	Base Number Matches：	1

LT1240-7DFB1 数据手册

Rugged Environment

AC-DC Converters >100Watt

T Series

500 Watt AC-DC Converters

T Series

Input to output isolation

Single output

• Universal AC input range

• DC output voltage for 24 and 48 V loads

• Battery charging for 24, 36, 48 V batteries with re-

mote temperature control

• Telecom rectifier applications

• Immune to transients and disturbances according to

VDE 160 and IEC/EN 61000-4-2,-3,-4,-5,-6

• 4000 V AC input to output electric strength test

• Very high efficiency, typically 93%

• Power factor >0.96, harmonics <IEC/EN 61000-3-2,

low RFI

• No inrush current, hot plug-in capability

• High power density, 210 W/dm³, rugged mechanical

design

• Very compact 19" cassette (28 TE, 3 U, 160 mm),

111

4.4"

3 U

Safety according to IEC/EN 60950

LGA

141

5.6"

168

28 TE

6.6"

Summary

The latter types can be integrated into systems where the

output voltage is backed-up by batteries. The float charge

of the battery can be set by a cell voltage selector switch

according to the battery type used. Moreover these units

feature a temperature sensor input to improve the life ex-

pectancy of the battery.

The T series of converters are electrically isolated AC-DC

converters with an output power of up to 550 W. For higher

power requirements several units may be connected in

parallel.

The input of the T units is ideally adapted to the mains: Full

power factor correction, no inrush current, low RFI level and

high transient and surge immunity are key design features.

The T units behave similar to a resistive load.

The rectifier types suit for DC-bus applications at constant

voltage. As the output voltage is SELV, even electrically non

isolated switching regulators such as the Melcher PSR

types may be connected to the T output.

The L-input provides a universal AC-input range from

85...255 V AC. It is the preferred type for 230 V mains,

whereas the U-input range is optimized for 110/120 V

mains. The output delivers an electrically isolated Safety

Extra Low Voltage (SELV) and is short-circuit and no-load

proof. Depending on the type, two output characteristics

are available, intended either for rectifier applications or for

battery charging purposes.

The T 1701 types are especially optimized to build distrib-

uted power systems together with the Melcher CQ-series

DC-DC converters as the signalling capabilities of both

families are matched. Distributed power systems have as

one advantage less power loss over load lines and fewer

regulation problems.

Melcher offers also backplanes for fast and simple set-up of

19" rack systems with T units (see chapter: Back Planes).

Page

Table of Contents

Page

Functional Features ....................................................... 16

Auxilliary Functions ........................................................ 21

Electromagnetic Compatibility (EMC) ............................ 25

Immunity to Environmental Conditions........................... 26

Environmental Conditions .............................................. 27

Mechanical Data ............................................................ 28

Safety and Installation Instructions ................................ 30

Description of Options.................................................... 33

Accessories.................................................................... 33

Summary.......................................................................... 1

Type Survey and Key Data .............................................. 2

Type Key .......................................................................... 2

Sensor Type Key .............................................................. 3

Functional Description...................................................... 4

Electrical Input Data ......................................................... 5

Electrical Output Data of the Rectifier Version ................. 7

Electrical Output Data of Battery Charger Version......... 10

Control Features of the Battery Charger Version ........... 12

Temperature Sensors..................................................... 15

Edition 4/4.99

1/33

MELCHER

The Power Partners.

12 3 4 5 6 7...33

中文翻译

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