AC DC LED transformer 220v to 12v 20a 250w constant voltage led driver
250w led driver is a model of constant voltage led driver. it has high efficiency>0.90,high PF>0.95.It is with short-circuit and overload protection,Smarts' SMT-012-250VW aluminum shell material is more waterproof than the LTF brand power supply, and can be installed indoors and outdoors.
Features
Product parameters
1.All parameters NOT specially mentoned are measured at 120~220VAC 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&10uf parallel.
3.Tolerance:includes set up tolerance,line regulation and load regulation.
SPECIFICAION
MODEL
SMT-012-250VW
SMT-024-250VW
OUTPUT
DC VOLTAGE
DC12V
DC24V
RATED CURRENT
20.83A
10.42A
CURRENT RANGE
0-20.83A
0-10.42A
RATED POWER
250 W
250W
RIPPLE&NOISE(max)
150mV
150mV
CURRENT TOLERANCE
SETUP RISE TIME
80ms/120VAC,220VAC
HOLD UP TIME(Typ.)
60ms/120VAC,220VAC
INPUT
VOLTAGE RANGE
100~265VAC
FREQUENCY RANGE
50~60Hz
POWER FACTOR(Typ.)
>PF0.97@120VAC & 220VAC
EFFICIENCY(Typ.)
﹥89%
AC CURRENT(Typ.)
1.85A/120VAC,220VAC
INRUSH CURRENT (Typ.)
COLD START 50A/120VAC,220VAC
PROTECTION
Short circuit
Protection type:recovers automatically after condition is removed
Overload
overload protected@145-160% above peak rating
Over temperature
Protection type:Shut down o/p voltage,re-power on to removed
ENVIRONMENT
WORKING TEMP.
-40~+50℃ (Refer to output load derating curve)
WORKING HUMIDITY
20~99% RH non-condensing(Waterproof)
STORAGE TEMP.,HUMIDITY
-40~+80℃,10~99%RH
SAFETY&EMC
SAFETY STANDARDS
ETL/cETL,CE Mark(EMC ,LVD),IP67
WITHSTAND VOLTAGE
I/P-O/P:1.5KVAC IP-GND:1.5KVAC
EMC Test Standards
EN55015:2006;EN61547:1995+2000;EN61000-3-2:2006
EN61000-3-3:1995+A2:2005;EN61346-1:2001;EN61347-2-13:2006
NOTE
Label
