3 Year Warranty

Approvals: 

Specifiction

PRODUCT NUMBER

LTEF320G-S050550

LTEF320G-S120250

LTEF320G-S240130

LTEF320G-S360088

LTEF320G-S480067

OUTPUT 

DC Output 

5.0V

12V

24V

36V

48V

Rated Current 

55A

25A

13A

8.8A

6.7A

Current Range     Note 1 

0~55A

0~25A

0~13A

0~8.8A

0~6.7A

Ripple and Noise   Note 2 

<150mV

<150mV

<200mV

<200mV

<200mV

Voltage ADJ.  Range 

+10% of rated output voltage 

Voltage Accuracy  

±1.0% 

Line Regulation 

±0.5% 

Load Regulation 

±1.0% 

Set-up Time 

≤2S (230VAC input, Full load); ≤4S (120VAC input, Full load)

Hold up Time 

≥10mS (120/230Vac input, Full load) 

Temperature Coefficient 

±0.03%/°C 

Overshoot and Undershoot 

<5.0% 

INPUT 

Voltage Range    

90Vac~264Vac, 120Vdc~370Vdc 

Frequency Range 

47Hz--63Hz 

Power Factor (Typical) 

 PF＞0.98/120VAC; PF＞0.95/230VAC

Efficiency (Typical) 

79%

84.5%

87%

87%

87.5%

AC Current (max.) 

< 4.5A 

Inrush Current (Typical) 

<50A@220Vac   <30A@110Vac   Cold start 

Leakage Current 

Input—output:<0.25mA; Input— PG:<3.5mA 

PROTECTION 

Over Load 

105%~150% of rated output current, Hiccup mode, auto recovery 

Over Power 

105%~150% of rated output power, hiccup mode, auto recovery 

Short Circuit 

Long-term mode, auto recovery 

ENVIRONMENT 

Operating amb. Temp. & Hum. 

-20°C~65°C; 20%~90% RH No condensing (refer to the derating curve) 

Vibration 

10 ~ 500Hz, 2G 10min./1cycle, period for60min. each along X, Y, Z axes 

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: 0.5KVDC;≤10mA.

Isolation Resistance 

10M ohms  

EMI Conduction & Radiation 

Compliance to EN55022, EN55024 Class B 

Harmonic Current 

Compliance to EN61000-3-2, -3 

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°C, Full load) 

Dimension (L*W*H) 

199x99x50 mm 

Packing 

12PCS/CTN, 9.8KGS, 0.04CBM 

Cooling method 

Cooling by forced air (built-in DC fan) 

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 0.1uF & 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