Over 15 years experience of providing support of MEAN WELL Power Supplies
Overview
DALI-25-150-900-E1A1 is the 10-54Vdc output model of this series: typical efficiency 84%.
Features
- Dimming interface: DALI, Push DIM
- T-PWM™ digital dimming.
- Dimming range: 0~100%, LED start at 0.01% possible.
- 0-100% flicker-free (IEEE 1789 standard).
- Innovative thermal management technology, intelligent power life protection.
- DALI dimming curve can be either linear or logarithmic.
- Multi-current & wide voltage, suitable for different power LED.
- Non-load output voltage 0V to prevent damages to LED caused by poor contact.
- Short circuit / Over-heat / Over load / Non-load protection, recover automatically.
- DALI bus standard: IEC62386-101, 102, 207.
- Suitable for internal lights application for Ⅰ/Ⅱ/Ⅲ.
- 5 years warranty (Rubycon capacitor).
Specifications
OUTPUT
- Output Voltage
- 10-54Vdc
- Max Output Voltage
- 58Vdc
- Non-load Output Voltage
- 0Vdc
- Output Current
- 150-900mA
- Output Power
- 1.5~25W
- Strobe Level
- Almost flicker-free / High frequency exemption assessment level.
- Dimming Range
- 0~100%, LED start at 0.01% possible.
- PWM Dimming Frequency
- ≤3600Hz (frequency conversion dimming)
- Current Accuracy
- ±5%
- Ripple & Noise
- ≤2V (no dim)
INPUT
- Dimming Interface
- DALI, Push DIM
- Input Voltage Range
- 220-240Vac ±10%
- Frequency
- 50/60Hz
- Input Current
- <0.2A
- Power Factor
- PF>0.93/230Vac, at full load
- THD
- ≤20% at 230Vac, at full load
- Efficiency(typ.)
- 84%
- Inrush Current(typ.)
- Cold start 3.01A at 230Vac (twidth=35μs measured at 50% Ipeak)
- Anti Surge
- L-N: 1kV
- Leakage Current
- <0.5mA/230Vac
ENVIRONMENT
- Working Temperature
- ta: 50°C tc: 90°C
- Working Humidity
- 20 ~ 95%RH, non-condensing
- Storage Temp., Humidity
- -40°C ~ 80°C, 10~95%RH
- Temp. Coefficient
- ±0.03%/°C (0-50°C)
- Vibration
- 10~500Hz, 2G 12min./1cycle, period for 72min. each along X, Y, Z axes.
PROTECTION
- Over-heat Protection
- Intelligently adjusting or turning off the output current if the PCB temperature ≥110°C, auto recovers.
- Over Load Protection
- Shut down the output when rated power≥102%, auto recovers.
- Short Circuit Protection
- Shut down automatically if short circuit occurs, auto recovers.
- Non-load Protection
- Shut down the output if no load, auto recovers when load back to normal.
SAFETY & EMC
- Withstand Voltage
- I/P-O/P: 3750Vac
- Isolation Resistance
- I/P-O/P: 100MΩ/500VDC/25°C/70%RH
- Safety Standards
- IEC/EN61347-1, IEC/EN61347-2-13
- EMC Emission
- EN55015, EN61000-3-2 Class C, IEC61000-3-3
- EMC Immunity
- EN61000-4-2,3,4,5,6,8,11 EN61547
- Strobe Test Standard
- IEEE 1789
OTHERS
- Dimension
- 167×41×32mm(L×W×H)
- Packing
- 168×43×35mm(L×W×H)
- Weight(G.W.)
- 165g±10g
- TUV
- Certificate No. B 17 06 01119 001
- RCM
- Equipment registration No: E2017013627 Ref: ESV170365
- ENEC
- Certificate No. U6 17 07 01119 004
- CE
- EMC Certificate No. BST1702498520001Y-1EC-1 LVD Certificate No. BST1709992470001Y-1SC-2
Certifications & ratings
- Marked features
- 5 years warranty, T-PWM Super depth dimming technology, Flicker-free IEEE 1789, Multiple Current
Technical drawings
Downloads
FAQ
What kind of LED applications is the Ltech DALI-25-150-900-E1A1 designed for?
This model is a 25W constant-current LED driver intended for internal lighting applications. Its selectable 150mA to 900mA output range makes it suitable for a variety of power LED fixtures that need current matching rather than a fixed-voltage supply.
Does this driver support DALI dimming only, or are other dimming options available?
The DALI-25-150-900-E1A1 supports DALI dimming and also lists Push DIM capability. It uses T-PWM digital dimming with a 0 to 100% dimming range, and the product description states LED startup at 0.01% is possible.
What makes this model different from a fixed-output LED driver?
A key difference is its selectable output current range of 150mA to 900mA, which gives more flexibility across compatible constant-current LED loads. That can simplify product selection when different fixtures in a project need different drive currents but still fit within this model's 25W and 58V limits.
What are the main electrical limits of this LED driver?
This model is rated at 25W maximum power and up to 58V output. It is a constant-current driver, with selectable rated current settings from 150mA through 900mA depending on the LED load requirements.
Is this driver suitable for low-level dimming and flicker-sensitive lighting projects?
Yes, this model is positioned for smooth low-end dimming, with LED startup at 0.01% noted in the product description. It also states 0 to 100% flicker-free dimming in line with IEEE 1789, which is relevant for applications where visual comfort matters.
How does this model handle demanding operating conditions and product longevity?
The specified ambient working temperature is up to 50°C (with a case temperature limit of 90°C), so it is built for a fairly wide indoor working environment. The driver also includes short-circuit, overload, overheat, and non-load protection, and it is backed by a 5-year warranty.
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