Model

SMT-012-300VDHW

SMT-024-300VDHW

Output

DC Voltage

12V

24V

Voltage Tolerance

±0.5V

Voltage Regulation

±0.5%

Voltage Tolerance

±0.5V

Load Regulation

±2%

±1%

±1%

Rated current

25.0A

12.5A

Rated power

300W

Input

Voltage Range

100-277VAC

Frequency Range

47~63HZ

Power Factor(Typ.)@ full load

0.98@120VAC  0.97@277VAC

0.98@120VAC  0.97@277VAC

THD(Typ.)@ full load

<20%

Inrush Current (Typ.)

20A, 50%, 1.4ms

Full Load 

Efficiency(Typ.)

>88%

>88%

AC Current(Typ.)

3.4A@110VAC

1.76A

1.76A

.A

1.74A

Leakage current

<0.50mA

Protection

Short Circuit

shut down o/p voltage, re-power on to recover after fault condition is removed

Over load

≤120% constant current limiting, auto-recovery

Over temperature

100℃±10℃ shut down o/p voltage, automatically recover after cooling.

Over Current

≤1.4*I out

Environment

Working TEMP.

-40~+60℃

Working Humidity

20~90%RH,non-condensing

Storage TEM.,Humidity

-40~+80℃,10~95%RH

TEMP.coefficient

±0.03%/℃(0~50℃)

Vibration

10~500Hz 2G 10min./1 cycle,period for 60min.each along X,

Y,Z axes

Safety&EMC

Safety standards

Class P, Type HL, EN61347-1 EN61347-2-13  IP67

Withstand voltage

I/P-O/P:3.75KVAC  I/P-FG:1.88KVAC  O/P-FG:0.5KVAC

Isolation resistance

I/P-O/P I/P-FG O/P-FG:100MΩ/500VDC/25℃/70%RH

EMC EMISSION

Compliance to EN55015,EN61000-3-2 (≧50%Load)

EMC IMMUNITY

Compliance to EN61000-4-2,3,4,5,6,8,11,EN61547,Alight industry 

level (surge4KV)

Others

Weight

1.75Kg  

Size

276*78*47mm (L*W*H)

packaging

10PCS/CTN

385*335*200mm     20PCS/CTN

Notes

1.  All parameters NOT specially mentioned are measured at  120VAC & 277vac input , rated load and 25℃of ambient temperature.

2.  Ripple& noise are measured at 20MHz of bandwidth by using a 12”twisted

 pair-wire terminated with a 0.1uf &47uf parallel capacitor.

3.  Tolerance:includes set us tolerance,line regulation and load regulation .