Over 15 years experience of providing support of MEAN WELL Power Supplies
Image shown is a representation only. Exact specifications should be obtained from the product datasheet.
Mean Well LDC-55DA2 Linear LED Driver 55W 500~1600mA Adjustable Out...
Overview
LDC-55DA2 is the model of this series: rated power 55W, typical efficiency 90%(230VAC@Full load).
LDC-55 series is a 55W AC/DC LED driver featuring the Constant Power mode output. LDC-55 operates from 180~295VAC and output current can be adjust between 500mA to 1600mA. Thanks to the efficiency up to 90%, with the fanless design, the entire series is able to operate -25℃~+80℃ case temperature under free air convection.LDC-55 is equipped with various function options, such as dimming methodologies, so as to provide the optimal design flexibility for LED lighting system.
Features
- Constant Power mode output
- Metal housing design
- Full Power at 70~100% max Current
- Built-in active PFC function
- Flicker Free design
- Class 2 power supply
- No load / Standby power consumption <0.5W
- Output current level pre-settable
- Function options: 3 in 1 dimming (dim-to-off); DALI interface, push dimming
- Typical lifetime>50000 hours
- SELV and Isolated
- 5 years warranty
Specifications
OUTPUT
- OUTPUT CURRENT REGION
- 500 ~ 1600mA(1050mA default)
- RATED POWERNote.2
- 55W
- CONSTANT CURRENT REGIONNote.2
- 27 ~ 56V
- FULL POWER CURRENT RANGE
- 980 ~ 1600mA
- OPEN CIRCUIT VOLTAGE(max.)
- 60V
- LOW FREQUENCY CURRENT RIPPLE
- 3.0% max. @rated current
- CURRENT TOLERANCE
- ±5.0%
- SET UP TIMENote.4
- 500ms/230VAC
INPUT
- VOLTAGE RANGENote.3
- 180 ~ 295VAC (Please refer to "STATIC CHARACTERISTIC" section)
- FREQUENCY RANGE
- 47 ~ 63Hz
- POWER FACTOR (Typ.)
- PF≧0.95/230VAC@load≧50%; PF≧0.9/277VAC@load≧75% (Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)
- TOTAL HARMONIC DISTORTION
- THD< 10%(@load≧50%/230VAC; @load≧75%/277VAC) (Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)
- EFFICIENCY (Typ.)Note.6
- 90%(230VAC@Full load)
- AC CURRENT (Typ.)
- 0.35A / 230VAC 0.25A / 277VAC
- INRUSH CURRENT(Typ.)
- COLD START 30A(twidth=300μs measured at 50% Ipeak)/230VAC; Per NEMA 410
- MAX. No. of PSUs on 16A CIRCUIT BREAKER
- 17 units (circuit breaker of type B) / 29 units (circuit breaker of type C) at 230VAC
- LEAKAGE CURRENT
- <0.75mA / 277VAC
PROTECTION
- SHORT CIRCUIT
- Hiccup mode or constant current limiting ,recovers automatically after fault condition is removed
- OVER VOLTAGE
- 61 ~ 80V Shut down o/p voltage with auto-recovery or re-power on to recovery
- OVER TEMPERATURE
- Shut down o/p voltage, with auto-recovery
FUNCTION
- DIMMING
- Please refer to“DIMMING OPERATION”section
- TEMP. COMPENSATION
- By external NTC, please refer to“TEMPERATURE COMPENSATION OPERATION”section
ENVIRONMENT
- WORKING TEMP.
- Tcase=-25 ~ +80℃ (Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)
- MAX. CASE TEMP.
- Tcase=+80℃
- WORKING HUMIDITY
- 20 ~ 95% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -40 ~ +80℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03%/℃ (0 ~ 60℃)
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
SAFETY & EMC
- SAFETY STANDARDSNote.5
- Ul8750, CSA C22.2 No. 250.13-12; ENEC BS EN/EN61347-1, BS EN/EN61347-2-13, AS/NZS 61347.1, AS/NZS IEC 61347.2.13; BS EN/EN62384; GB/T19510.1,GB/T19510.213, EAC TP TC 004, BIS IS15885 approved
- DALI STANDARDS
- Compliance to IEC62386-101.102.207 for DA-Type only
- WITHSTAND VOLTAGE
- I/P-O/P:3.75KVAC I/P-FG:2.0KVAC O/P-FG:1.5KVAC
- ISOLATION RESISTANCE
- I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
- EMC EMISSIONNote.5
- Compliance to BS EN/EN55015,BS EN/EN61000-3-2 Class C (@load≧50%) ; BS EN/EN61000-3-3;GB/T17743, GB17625.1,EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11; BS EN/EN61547, light industry level(surge immunity:Line-Earth: 2KV,Line-Line:1KV),EAC TP TC 020
OTHERS
- MTBF
- 2521K hrs min. Telcordia SR-332 (Bellcore) 226.1Khrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 320*30*21mm (L*W*H)
- PACKING
- 0.255Kg;48pcs/13.24Kg/0.92CUFT
Test conditions and notes10
- 1. All parameters NOT specially mentioned are measured at 230VAC input, rated current and 25℃ of ambient temperature.
- 2. Please refer to " OUTPUT CURRENT SETTING ".
- 3. De-rating may be needed under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.
- 4. Length of set up time is measured at first cold start. Turning ON/OFF the power supply may lead to increase of the set up time.
- 5. The driver is considered as a component that will be operated in combination with final equipment. Since EMC performance will be affected by the complete installation, the final equipment manufacturers must re-qualify EMC Directive on the complete installation again. (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf)
- 6. The DA type power supply is less efficient than the typical efficiency in specification by 2%.
- 7. This series meets the typical life expectancy of >50000 hours of operation when Tcase, particularly tc point (or TMP, per DLC), is about 70℃ or less.
- 8. Please refer to the warranty statement on MEAN WELL's website at http://www.meanwell.com.
- 9. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
- 10. To fulfill requirements of the latest ErP regulation for lighting fixtures, this LED power supply can only be used behind a switch without permanently connected to the mains.
Technical drawings
Typical applications
- LED panel lighting
- Indoor LED lighting
- Linear LED lighting
Downloads
Certificates10
Test reports1
Catalogues1
FAQ
Can I use the LDC-55DA2 for higher-current LED downlight modules?
Yes, when the downlight uses a constant current LED engine that operates within the 27-56V range at a current within this model's 500-1600mA adjustable range (1050mA default). With 55W capacity, it is aimed at constant current loads rather than constant voltage lighting products.
Is the LDC-55DA2 a good choice for small high-brightness LED arrays?
It can be, provided the array is a constant current load and its total forward voltage stays inside the 27-56V CC range. Output current is set from 500 to 1600mA with a resistor on the IADJ terminals, and the full 55W is available from 980 to 1600mA.
Can this model be used in signage lighting that uses constant current LED modules?
Yes, if the signage module is a constant current design within the 27-56V range and up to 55W. It is not intended for constant voltage signage systems, so it should only be used where the LED module is specified for constant current operation.
How should I size an LED load for the LDC-55DA2?
Use LED modules that require a constant current source and whose combined forward voltage falls within 27-56V. The number of LEDs depends on each LED's forward voltage, so the correct check is total LED forward voltage at the required current, not a preset LED quantity.
Is the LDC-55DA2 suitable for cold or hot operating environments?
This driver is rated for a case temperature (Tcase) of -25°C to +80°C, with load derating per the output load vs temperature curve; -40°C to +80°C is the storage range. No IP rating is listed in the provided specs, so environmental suitability still depends on the final enclosure or fixture design.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Other LDC Series Models
50 other modelsPlease log in to write a review.
Write a review
Reviews are checked before publishing. By submitting you confirm this is your genuine experience with this product.
Submitting your review…
It's published and now helps other buyers.
We're checking it and it'll appear shortly.
Please try again.
