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LT1740-7Z Datasheet(PDF) 2 Page - Power-One

Part # LT1740-7Z
Description  500 Watt AC-DC Converters
Download  4 Pages
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Manufacturer  POWER-ONE [Power-One]
Direct Link  http://www.power-one.com
Logo POWER-ONE - Power-One

LT1740-7Z Datasheet(HTML) 2 Page - Power-One

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Edition 5/07/01
Cassette Style
T Series
Input
Input voltage AC
refer to selection chart
Input frequency
47/63 Hz
Power factor
active PFC
>0.96
Inrush current
virtually no inrush current
Output
Efficiency
Ui nom, Io nom
up to 93 %
Output voltage setting accuracy
Ui nom, 50% Io nom
±0.25 V
Output voltage noise (total)
IEC/EN 61204, including a sinusoidal output ripple at
twice the line frequency
≤1.1 V
pp
Line regulation
Ui min...Ui max, Io nom
typ. 1.6 %
Load regulation
Ui nom, 1...100% Io nom
typ. 2.5 %
Minimum load
not required
Current limitation
constant power, constant current characteristic
typ. 145 %
Io nom
Operation in parallel
enabled by droop current share
Hold-up time
Io nom, output voltage decrease to 85% Uo nom
16 ms
Protection
Input fuse
built-in, UT/LT
10 A slow blow/6.3 A fast
Reverse polarity
bridge rectifier
Input undervoltage lockout
typ. 90 %
Ui min
Input overvoltage lockout
typ. 104 %
Ui max
Input transient
varistor
Output
no-load, overload and short circuit proof
Output overvoltage
second control loop
30/60 V SELV
Overtemperature
switch-off with auto restart
TC typ. 100°C
Control
Output voltage adjustment
Ucr input for remote control
93...104%
Uo nom
Inhibit
output enabled if inhibit left open
Output undervoltage monitoring threshold level externally adjustable
Status monitoring
system good (Sys OK, Uo OK, no int. or external fault)
Status indication
LEDs: Sys OK,
Uo OK and Error
Safety
Approvals
EN 60950, UL 1950, CSA 22.2 No. 950
Electric strength test voltage
class I, I/case
2 kV AC
class I, I/O
4 kV AC
class I, O/case
1 kV AC
Degree of protection
IP 30


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