ld w25 series is a single or two phas e ac or dc input din rail switching power supply. its compact size, high efficiency, excellent reliability together with easy installation due to pluggable connectors makes it market leader for various industrial telecom and renewable energy applications . ldw25 series is class i i isolation device s suitable for selv and pelv circuitry and are designed to be mounted on din rail and installed inside a protective enclosure. ? single or two phase ac (90 - 550 vac ) or dc (150 - 725 vdc) input ? high efficiency and extremely compact size ? plastic enclosure ? class ii insulation (simplified wiring) ? overload 130% ? up to 70c operating temperature with derating curve ? ideal for applications with harsh mains conditi ons ? s models have conformal coated pc - board ? compliant to renewable energy systems and high dc bus ? rohs compliant ? industrial control ? communication ? instrumentation equipment ? renewable
ldw25 series 2 asia - pac ific +86 755 298 85888 europe, middle east +353 61 225 977 north america +1 408 785 5200 ? 2017 bel power solutions & protection bcd.00852_ac ldw 25 - 12 120 - 50 0 vac (150 - 725 vdc ) 1 / 2 12 vdc 2.0 - 1.6 a no oring diode ldw 25 - 24 120 - 50 0 vac (150 - 725 vdc ) 1 / 2 24 vdc 1.0 a no oring diode ldw 25 - 48 120 - 50 0 vac (150 - 725 vdc ) 1 / 2 48 vdc 0.5 a no orin g diode * a d d s u f f i x s f o r model s w i t h a conformal coat i n g o n a pc - board. technical parameters are typical, measured in laboratory environment at 25c and 240 v ac / 50 hz, at nominal values, after minimum 5 minutes of operation. input ac voltage range rated, single or two phase operating 120 C 500 vac 90 - 550 vac input frequency 47 - 63 hz input dc voltage range rated 150 C 725 vdc input ac current vin = 120 vac / single phase vin = 500 vac / two phase 0.5 a 0.15 a input dc current vin = 1 50 vdc vin = 725 vdc 0.3 a < 0.1 a inrush peak current 25 a touch (leakage) current 0.2 ma internal protection fuse none, external fuse must be provided recommended external protection 1 it is strongly recommended to provide external surge arresters (spd) according to local regulations. mcb 2 a c curv e / cartridge fuse class cc 2at 600 v ac output power 25 w rated voltage (voltage adjustment range) ldw25 - 12 ldw25 - 24 ldw25 - 48 12 vdc (12 C 15 vdc) 24 vdc (23 C 28 vdc) 48 vdc ( 45 C 55 vdc) continuous current ldw25 - 12 ldw25 - 24 ldw25 - 48 2.0 - 1.6 a 1.0 a 0.5 a overload limit 2 ldw25 - 12 ldw25 - 24 ldw25 - 48 vin = 120 vac 2.65 a 1.45 a 0.75 a ldw25 - 12 ldw25 - 24 ldw25 - 48 vin = 240 vac ; vin = 400 vac ; vin = 500 vac 2.90 a 1.70 a 0.90 a short circuit peak current ldw25 - 12 ldw25 - 24 ldw25 - 48 6.5 a 4.0 a 2.5 a load regulation 0.5% 1 in order to be ul compliant use listed cartridge non - renewable (jddz) fuse class cc 2at 600 vac. 2 on ldw25 - 12 measurements are performed with output set to 12 vdc.
ldw25 series 3 asia - pac ific +86 755 298 85888 europe, middle east +353 61 225 977 north america +1 408 785 5200 ? 2017 bel power solutions & protection bcd.00852_ac ripple & noise 3 50 mvpp hold up time vin = 240 vac / single phase vin = 500 vac / two phase 35 ms 180 ms protections overload/short circuit: hiccup mode over temperature overvoltage output over voltage protection ldw25 - 12 ldw25 - 24 ldw25 - 48 18 vdc 33 vdc 68 vdc status signals green led = dc ok efficiency 2 ldw25 - 12 ldw25 - 24 ldw25 - 48 > 81.5% > 84.5% > 84% dissipated power ldw25 - 12 ldw25 - 24 ldw25 - 48 < 5. 5 w < 4.5 w < 4.6 w parallel connection possible for redunda ncy (with external oring module) note: power rating, losses, efficiency, ripple, thermal behaviour and start - up may change outside of the nominal rated input range. c ontact factory for details. operating temperature 4 - 40 to + 70c derating see figure 1. storage temperature - 40 oc to + 80oc humidity non - condensing 5 - 95% rh life time expectancy a t 25 oc ambient full load 179477 h (20.4 years) overvoltage category pollution degree iii (en50178) 2 (iec60664 - 1) protection c lass class ii isolation voltage input to output 4.2 kvdc safety standards & approvals ul508 ( c e r t i f i e d ) en60950 (reference) en50178 (reference) emc standards emission en55011 (cispr11) en55022 (cispr22) class b class b immunity en61000 - 4 - 2 en61 000 - 4 - 3 en61000 - 4 - 4 en61000 - 4 - 5 en61000 - 4 - 11 level 3 level 3 level 3 level 4 level 2 protection degree en60529 ip20 vibration sinusoidal iec 60068 - 2 - 6 5 - 17.8 hz: 1.6 mm; 17.8 - 500 hz: 2g 2hours / axis (x,y,z) shock iec 60068 - 2 - 27 30 g 6 ms, 20 g 11 ms; 3 bu mps / direction, 18 bumps total 3 ripple and noise are measured with 20 mhz bandwidth, probe terminated with a 0.1 f mkp parallel capacitor. 4 start - up type tested: - 40c, possible at no minal voltage with load derati n g .
ldw25 series 4 asia - pac ific +86 755 298 85888 europe, middle east +353 61 225 977 north america +1 408 785 5200 ? 2017 bel power solutions & protection bcd.00852_ac f i g u r e 1 . d e r a t i n g v s c u r r e n t f i g u r e 2 . d e r a t i n g v s t e m p e r a t u r e
ldw25 series 5 asia - pac ific +86 755 298 85888 europe, middle east +353 61 225 977 north america +1 408 785 5200 ? 2017 bel power solutions & protection bcd.00852_ac weight 17 0 g dimensions (w x h x d) 72 x 1 1 4 . 2 x 61. 5 mm mounting rail iec 60715/h15/th35 - 7.5( - 15) connection terminals screw type header (24 - 12 awg) 2.5 mm2 case material abs, flame retardant ul94 v - 0 figure 3 . mechanical dr awing
ldw25 series 6 asia - pac ific +86 755 298 85888 europe, middle east +353 61 225 977 north america +1 408 785 5200 ? 2017 bel power solutions & protection bcd.00852_ac input connection o utput connection single phase: l = line (1) n = neutral (3) + = positive dc (12) - = negative dc (11) 2 phase: l1 = phase 1 (1) l2 = phase 2 (3) dc: l1( l ) = + positive dc (1) l2(n) = - negative dc (3) nuclear and medical applications - products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. technical revisions - the appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. specifications are subject to change without notice.
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