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LTEF800 SERIES


800W Enclosed Power Supply for Industrial Equipment


  • Universal AC input/ Full range
  • Built-in active PFC function, PF>0.96
  • Using ZVS technology to reduce power dissipation
  • Output protection: OVP/OLP/SCP/OPP/OTP
  • Built in Fan speed control
  • Built in AC inrush current limiting circuit(<20A)
  • Build in constant current limiting circuit
  • Built in Remote Sense Function
  • Build in DC OK signal
  • Wide operating ambient temperature (-30°C~70°C)
  • 1 U low profile,41mm

Specifications

 

 

3 Year Warranty

 

Approvals: 

 

Specification

PRODUCT NUMBER

LTEF800-S240 

LTEF800-S270 

LTEF800-S480 

OUTPUT 

DC Output 

24V 

27V 

48V 

Rated Current (100~127Vac) 

27A 

23A 

14A 

Rated Current (128~264Vac) 

33A 

29A 

16.5A 

Ripple and Noise Note 2 

≤200mV 

≤200mV 

≤200mV 

Voltage ADJ.  Range 

-5%~+10% of rated output voltage 

Voltage Accuracy  

±2% 

Line Regulation 

±0.5% 

Load Regulation 

±2% 

Set-up Time 

≤3S (220Vac input, Full load) 

Hold up Time  

≥8mS (220Vac input, Full load) 

Temperature Coefficient 

±0.03%/°C 

Overshoot and Undershoot 

<5.0% 

INPUT 

Voltage Range    

90Vac~264Vac,127Vdc~370Vdc 

Frequency Range 

47Hz--63Hz 

Power Factor(Typical) 

PF≥0.96/230VAC     PF≥0.98/115VAC     Full Load 

Efficiency ( Typical) 

≥89% 

≥89% 

≥89% 

AC Current (max.) 

≤12 A 

Inrush Current (Typical) 

≤20A @220Vac       Cold start 

Leakage Current 

Input—output: ≤0.25mA     Input—PG: ≤3.5mA 

 

PROTECTION 

Over Load 

110%~135% of rated output current, constant current, auto recovery 

Over power 

110%~135% of rated output power, constant current, auto recovery 

Over Temperature 

105°C+C(detect on Mosfet temperature);shut down,auto recovery after the temperature goes down to 70°C 

Over Voltage 

110%~150% of rated output voltage, constant voltage, auto recovery 

Short Circuit 

Long-term mode, constant current, auto recovery  

ENVIRONMENT 

Operating amb. Temp. & Hum. 

-30°C~70°C;  20%~90%RH  No condensing  (refer to derating curve) 

Storage Temp. & Hum. 

-40°C~85°C;  10%~95%RH  No condensing 

SAFETY &EMC   

(Note 3) 

Safety Standards 

UL60950-1 2nd Ed; IEC 60950-1:2005(2nd Ed) ;EN60950-1:2006 

Withstand Voltage 

Primary-Secondary:3.0KVac; ≤10mA .Primary-PG:1.5KVac; ≤10mA. Secondary-PG:0.5KVac;≤10mA. 

Isolation Resistance 

10M ohms  

EMI Conduction&Radiation 

Compliance to EN55022, Class B 

Harmonic Current 

Compliance to EN61000-3-2,Class D 

EMS Immunity 

Compliance to EN61000-4-2,3,4,5,6,8,11; heavy industry level 

OTHERS 

MTBF (MIL-HDBK-217F) 

More than 200,000Hrs (25°ãC, Full load) 

Dimension  (L*W*H) 

226×116.5×41mm 

Packing 

6PCS/CTN, 8.9KGS, 0.04CBM 

Cooling method 

Fored air cooling(Built-in fan,the fan speed is controlled by load and internal temp.)  

NOTE 

  1. All parameters NOT specially mentioned are measured at rated input, rated load and 25°C of ambient temperature. 
  2. Measured at 20MHz of bandwidth by using a 12” twisted pair-wire terminated with a 0.1 uF & 47uF parallel capacitor. 
  3. The power supply is considered as a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies” on MEPOS website 

 

 

Block Diagram

 

 

Derating Curve

 

 

 

Mechanical Specification

 

 

Datasheet PDF