| Quantity: | |
|---|---|
MODEL | ADD-155A | ADD-155B | ADD-155C | |||||||
OUTPUT | ||||||||||
Output number | CH1 | CH2 | CH3 | CH1 | CH2 | CH3 | CH1 | CH2 | CH3 | |
DC voltage | 13.8V | 5V | 13.3V | 27.6V | 5V | 27.1V | 54 V | 5 V | 53.5 V | |
Rated Current | 9.5A | 3A | 0.5A | 4.5A | 3A | 0.5A | 2.3A | 3A | 0.2A | |
Current Range | 0~10.5A | 0~3A | -------- | 0~5A | 0~3A | --------- | 0~2.5A | 0~3A | --------- | |
Rated Power | 152.75W | 152.75W | 149.9W | |||||||
Ripple & Noise | 150mVp-p | 100mVp-p | -------- | 200mVp-p | 100mVp-p | ------- | 240mVp-p | 100mVp-p | -------- | |
Voltage Adj. Range | CH1:12~14.5V | CH1:24~29V | CH1:48~58V | |||||||
Voltage Tolerance | ±2.0% | ±3.0% | -------- | ±1.0% | ±3.0% | -------- | ±1.0% | ±5.0% | -------- | |
Line Regulation | ±1.0% | ±0.5% | -------- | ±1.0% | ±0.5% | -------- | ±1.0% | ±0.5% | -------- | |
Load Regulation | ±1.0% | ±2.0% | -------- | ±1.0% | ±2.0% | -------- | ±1.0% | ±2.0% | -------- | |
Setup, Rise Time | 1000ms, 90ms/230VAC 2000ms, 90ms/115VAC at full load | |||||||||
Hold Up Time | 24ms/230VAC 20ms/115VAC at full load | |||||||||
INPUT | ||||||||||
Voltage Range | 88~264VAC 47~63Hz; 124~370VDC | |||||||||
AC Current | 2.5A/115VAC 1.5A/230VAC | |||||||||
Efficiency | 78% | 81% | 81% | |||||||
Inrush Current | Cold start 20A/115VAC 40A/230VAC | |||||||||
Leakage Current | <1mA /240VAC | |||||||||
PROTECTION | ||||||||||
Over Load | CH1,CH2:105 ~ 135% CH3:0.51 ~ 0.9A rated output power | |||||||||
Protection type: AC Charging Mode: Hiccup mode, recovers automatically after fault condition is removed UPS Mode: Protected by internal fuse | ||||||||||
Over Voltage | CH1:15.87~18.63V | CH1:31.74~37.26V | CH1:62.1~72.9V | |||||||
Protection type: Hiccup mode, recovers automatically after fault condition is removed | ||||||||||
Battery Low | 10V±0.8V | 19.5V±1.5V | 39V±2V | |||||||
ENVIRONMENT | ||||||||||
Working Temp. | -10~+60℃ (Refer to “Derating Curve”) | |||||||||
Working Humidity | 20~90%RH non-condensing | |||||||||
Storage Temp., Humidity | -20~+85℃,10~95%RH | |||||||||
Temp. Coefficient | ±0.03%/ ℃(0~50℃ )on CH1 output | |||||||||
Vibration | 10~500Hz,2G10min./1cycle,60min.each along X, Y,Z axes | |||||||||
SAFETY &EMC | ||||||||||
Safety Standards | Design refer to UL60950-1, TUV EN60950-1 | |||||||||
Withstand Voltage | I/P-O/P:3KVAC I/P-FG:1.5KVAC O/P-FG:0.5KVAC | |||||||||
Isolation Resistance | I/P-O/P,I/P-FG,O/P-FG:100M Ohms/500VDC /25℃ /70%RH | |||||||||
EMC Emission | Compliance to EN55022(CISPR22) Class B, EN61000-3-2,-3 | |||||||||
EMC Immunity | Compliance to EN61000-4-2,3,4,5,6,8,11,EN55024,light industry level, criteria A | |||||||||
OTHERS | ||||||||||
Dimension | 119*11*50mm(L*W*H) | |||||||||
Weight | 1Kg | |||||||||
| Packing | 16pcs/16Kg/0.95CUFT | |||||||||
The ADD-155B launched by Yueqing Leyu Electric Automation Co., Ltd. is a 24V voltage specification model within the ADD-155 series. It is a switch mode power supply with built-in battery charging management function, supporting dual output + battery charging channel, effectively providing three DC outputs with a total rated power of 152.75W.
The power supply accepts 88~264VAC universal AC input and features built‑in active PFC (Power Factor Correction), making it suitable for use under global power grids. Its core design concept is to provide an integrated power solution for equipment that requires a backup battery – during normal operation it powers the load and charges the battery; when utility power fails, it automatically switches to battery output, realizing a UPS function.
The main output (CH1) of the ADD-155B is 27.6V/4.5A (5A max), commonly used for floating charging of 24V lead‑acid batteries or directly driving DC equipment. The second output (CH2) provides 5V/3A, convenient for powering logic circuits such as control boards and sensors. The third output (CH3) is 27.1V/0.5A, specifically designed for battery topping charge or maintenance charge. The three outputs are isolated from each other and can operate simultaneously.
Universal AC input: Voltage range 88~264VAC, compatible with common mains like 120V and 230V, also supports 124~370VDC input.
Built-in active PFC: Meets EN61000-3-2 harmonic standard, improves power factor, reduces grid interference.
Integrated UPS function: Under normal operation, supplies load and charges battery; after mains failure, internally switches to battery power mode (external battery required), protected by internal fuse.
Multiple protections
Short circuit, overload, over voltage
Battery low protection (19.5V±1.5V)
In AC charging mode: hiccup mode for overload, automatically recovers after fault removal
In UPS mode: protected by internal fuse
Cooling by free air convection: Fan‑less, suitable for silent or enclosed environments.
100% full load burn‑in test: Each unit is aged at full load before shipment, ensuring long‑term reliability.
Fixed switching frequency: 67kHz for PFC stage, 134kHz for PWM stage – concentrated EMI spectrum, easy to filter.
Voltage accuracy and stability
CH1 main output voltage tolerance ±1.0%, load regulation ±1.0%, line regulation ±1.0%, performs excellently in voltage‑sensitive applications like industrial control and communication equipment.
Wide operating temperature range
Supports -10℃ ~ +60℃ ambient temperature (refer to derating curve), with natural convection cooling, adaptable to harsh environments such as outdoor cabinets and high‑temperature workshops.
Low ripple & noise
CH1 ripple & noise only 200mVp-p, CH2 100mVp-p, measured at 20MHz bandwidth using twisted pair with parallel capacitor, meeting high power quality requirements for digital circuits or analog front‑ends.
High immunity
Complies with EN55022 Class B radiated/conducted emission limits, and passes EN61000-4-2/3/4/5/6/8/11 immunity tests (light industrial level, criteria A), suitable for installation near strong interference sources such as variable frequency drives and motors.
Compact structure & long life
Dimensions 119×11×50mm (L×W×H), weight 1kg, standard industrial packaging. Two‑year warranty, generous margins on key components.
Security & surveillance systems
Powers 24V PTZ cameras, access controllers, while charging backup battery – maintains system operation after power failure.
Communication base stations & repeaters
Provides 27.6V DC to wireless equipment, 5V to monitoring units, and manages backup battery banks.
Industrial automation equipment
Mixed power supply for PLCs, touch panels, sensors, especially suitable for control cabinets that need to retain data during short power interruptions.
Medical carts & mobile workstations
Utilises the UPS feature to maintain power to computers or displays during movement (verify isolation withstand voltage against medical standards – this product is designed to UL60950, not medical‑grade, evaluation required).
Small solar/wind energy storage systems
Serves as an AC‑DC charging module, charging 24V battery banks while simultaneously supplying low‑voltage DC loads.
Q: Can the ADD-155B directly charge a 24V lead‑acid battery?
A: Yes. CH1 voltage adjustment range is 24~29V, factory default 27.6V, exactly the floating charge voltage for 24V lead‑acid batteries. CH3 provides 27.1V/0.5A low current, suitable for maintenance charging. It is recommended to add an appropriate fuse or reverse‑protection diode in the battery circuit.
Q: How long can the output be maintained after AC power fails?
A: This depends on the capacity of the external battery. The power supply itself does not contain an internal battery – the user must connect a battery in parallel across the output. When the input voltage drops below the threshold, the internal circuit switches to battery power; the output voltage will then drop slightly (determined by the battery voltage).
Q: CH1 and CH3 voltages are very close – can they be paralleled to increase current?
A: Direct paralleling is not recommended. CH3 output current capability is only 0.5A, and the two outputs are not designed with current sharing. If higher current is needed, use only CH1 (5A max).
Q: Does derating apply when ambient temperature reaches 60℃?
A: Yes. The specification clearly states an operating range of -10~+60℃, but the actual available power must be reduced according to the derating curve as temperature rises. Above 50℃, typical derating is 2~3% output power per ℃. It is recommended to leave at least 20% margin when used above 40℃.
Q: Does this power supply have CE certification?
A: Safety standards refer to UL60950-1 and TUV EN60950-1; EMC complies with EN55022 Class B and EN61000 series requirements. As a component, the final equipment must re‑confirm overall EMC compliance.
Q: How to recover after battery low protection activates?
A: In AC charging mode, the supply is in hiccup protection state; after AC power is restored and the battery voltage rises back to normal, output automatically recovers. In UPS mode, if the internal fuse has blown, it must be replaced.
Q: Can it be used for LED displays or lighting?
A: Yes, it can be used for 27.6V LED modules or strips, but note that CH1 rated current is 4.5A (5A max), total power 152.75W. For lighting applications, it is recommended to leave a 20% margin to avoid prolonged full load.
All parameters not specially mentioned are measured at 230VAC input, rated load, and 25℃ ambient temperature.
Ripple & noise measurements use a 12‑inch twisted pair terminated with 0.1µF & 47µF parallel capacitor, 20MHz bandwidth.
The power supply is considered a component that will be installed into final equipment. The final equipment must re‑confirm compliance with safety and EMC requirements.
For the complete datasheet, derating curve, or sample testing, please contact Yueqing Leyu Electric Automation Co., Ltd.
Download:
ADD-155.doc
Leyu , based in Wenzhou Leqing, enjoys a developed economy and convenient air, water, rail, and road transport. For 14 years, we have specialized in designing and producing switching power supplies and off-grid solar inverters, with CE, ROHS, CCC, IP67, and ISO9001 certifications. Our modern production and testing equipment ensure reliable performance—our 0.3‰ defect rate far exceeds the national 3% standard.
We offer OEM/ODM services (design, prototyping, production, testing, delivery) backed by senior engineers and strong R&D partnerships. Leyu products are exported to over 50 countries across Europe, the Americas, Southeast Asia, South America, and Africa. Our young, energetic foreign trade team (avg. 3 years’ experience) and our commitment to sincere, attentive service have built a trusted brand. As a high-tech enterprise integrating R&D, production, sales, and technical support, Leyu strives to become a national-class electrical company.
Leyu always puts customers at the center, integrates sincere service into every step, and with solid technology, reliable quality, efficient response, and worry-free transportation, becomes your trustworthy long-term partner.
Leyu provides full-process technical support from product design, drawing, and R&D to testing, ensuring that customized needs are professionally fulfilled.
Leyu has established a rapid response mechanism, patiently listens to customer feedback, and promptly resolves any issues during use, so customers have no worries.
Leyu strictly implements quality control that is 100 times better than the national standard (0.3‰ failure rate). All products are certified with CE, ROHS, CCC, IP67, etc., and undergo 100% full-load burn-in testing.
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