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參數(shù)資料
| 型號(hào)： | LT1740-7DFB1 |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 550 W AC-DC REG PWR SUPPLY MODULE |
| 封裝： | CASE T01, MODULE |
| 文件頁數(shù)： | 1/33頁 |
| 文件大?。?/td> | 838K |
| 代理商： | LT1740-7DFB1 |
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Rugged Environment
AC-DC Converters >100 Watt
T Series
Edition 4/4.99
1/33
MELCHER
The Power Partners.
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),
LGA
Summary
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 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 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 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 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).
C
168
6.6"
141
5.6"
28 TE
111
4.4"
3 U
Table of Contents
Page
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
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
Safety according to IEC/EN 60950
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