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Mean Well RSD-30L-24 DC-DC Converter - 30W - 18~72V in 24V out 1.25A
Overview
RSD-30L-24 is the 24V output model of this series: rated current 1.25A, rated power 30W, typical efficiency 91%.
RSD-30 is a 30W enclosed type DC-DC reliable railway converter. This series is compliant with BS EN/EN50155/ IEC60571 railway standard, constituting three types of models with 4:1 wide but different input ranges 9~36V/18~72V/40~160V, suitable for railway and all kinds of transportation systems exploiting the frequently used standard input voltages such as 12V, 24V, 36V, 48V, 72V, 96V and 110V. Various output voltages, 3.3V, 5V, 12V and 24V are available for selection. This series has the capability of working under -40~+70℃, low ripple and noise, supreme EMC characteristics, 4KVDC I/OP-OP, low enclosure profile 25mm and an interior with semi-potted silicone. It does not only well fits the in-car systems or the facilities by rails for railway, trams and buses but also can be used in the harsh environment with high vibration, high dust, extremely low or high temperature, etc.
Features
- Compliance to BS EN/EN50155 and BS EN/EN45545-2 railway standard
- Ultra compact and 1U low profile(25mm)
- 4:1 wide input range
- No minimum load required
- Protections: Short circuit / Overload / Over voltage / Input reverse polarity
- 4000VDC I/O isolation (reinforced isolation)
- Half encapsulated , cooling by free air convection
- -40~+70℃ wide working temperature
- Built-in constant current limiting circuit
- LED indicator for power on
- 3 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- 24V
- RATED CURRENT
- 1.25A
- CURRENT RANGE
- 0 ~ 1.25A
- RATED POWER
- 30W
- RIPPLE & NOISE (max.)Note.2
- 50mVp-p
- VOLTAGE TOLERANCENote.3
- ±2.0%
- LINE REGULATION
- ±0.2%
- LOAD REGULATION
- ±0.2%
- SETUP, RISE TIME
- 120ms, 85ms at full load
- HOLD UP TIME (Typ.)
- Please refer to page 5 Hold up Time( Load de-rating curve )
INPUT
- VOLTAGE RANGE CONTINUOUS
- 18 ~ 72VDC
- EFFICIENCY (Typ.)
- 91%
- DC CURRENT (Typ.)
- 0.8A/48V
- INRUSH CURRENT (Typ.)
- 20A/48VDC
- INTERRUPTION OF VOLTAGE SUPPLY
- EN50155:2021-Comply with S1 level
PROTECTION
- OVERLOAD
- 105 ~ 135% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
- OVER VOLTAGE
- 27.6 ~ 32.4V Protection type : Shut down o/p voltage, re-power on to recover
ENVIRONMENT
- WORKING TEMP.
- -40 ~ +55℃ (no derating) ; +70℃ @ 60% load by free air convection ; +70℃ (no derating with external base plate)
- WORKING HUMIDITY
- 5 ~ 95% RH non-condensing
- STORAGE TEMP.
- -40 ~ +85℃
- TEMP. COEFFICIENT
- ±0.03%/℃ (0 ~ 50℃)
- VIBRATION
- 10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes ; Mounting : compliance to IEC61373
- OPERATING ALTITUDE
- 5000 meters
SAFETY & EMC
- SAFETY STANDARDS
- IEC 62368-1, UL 62368-1, AS/NZS 62368-1, EAC TP TC 004 approved, Design refer to BS EN/EN62368-1
- WITHSTAND VOLTAGE
- I/P-O/P:4KVDC I/P-FG:2.5KVDC O/P-FG:2.5KVDC
- ISOLATION RESISTANCE
- I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
- EMC EMISSION
-
Parameter Standard Test Level Conducted BS EN/EN55032 Class A Radiated BS EN/EN55032 Class B Harmonic Current BS EN/EN61000-3-2 Voltage Flicker BS EN/EN61000-3-3 -----; BS EN/EN55035 - EMC IMMUNITY
-
Parameter Standard Test Level ESD BS EN/EN61000-4-2 Level 3, ±8KV air; Level 3, ±6KV contact Radiated Field BS EN/EN61000-4-3 Level X, 20V/m EFT / Burst BS EN/EN61000-4-4 Level 3, 2KV at power Surge BS EN/EN61000-4-5 Level 3,1KV Line-Line, Level 3, 2KV Line-Earth Conducted BS EN/EN61000-4-6 Level 3 - RAILWAY STANDARD
- Compliance to BS EN/EN45545-2 for fire protection ;BS EN/EN50155 / IEC60571 including IEC61373 for shock & vibration, BS EN/EN50121-3-2 for EMC
OTHERS
- MTBF
- 3093.5K hrs min. Telcordia SR-332 (Bellcore) ; 396.9K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 113*60*25mm (L*W*H)
- PACKING
- 0.25Kg; 56pcs/15Kg/0.81CUFT
Test conditions and notes6
- 1. All parameters NOT specially mentioned are measured at 24,48VDC 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 0.1μF & 47μF parallel capacitor.
- 3. Tolerance : includes set up tolerance, line regulation and load regulation.
- 4. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
- 5. Strongly recommended that external output capacitance should not exceed 5000uF.
- 6. 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).
Technical drawings
Typical applications
- Bus, tram, metro or railway system
- Wireless network
- Telecom or datacom system
- Highly vibrating, highly dusty, extremely low or high temperature harsh environment
Downloads
Certificates7
Test reports1
FAQ
Can I use the RSD-30L-24 to power a 24V PLC I/O module or industrial controller from a wide DC bus?
This model is a constant-voltage DC-DC converter with a 24V output rated for 1.25A and 30W. That makes it suitable for 24V industrial control loads that stay within 1.25A. Its 18-72V input range also fits systems built around a wide DC source.
Is the RSD-30L-24 a good fit for embedded 24V sensors or low-power automation electronics?
It can fit embedded or automation equipment that requires a regulated 24V output and draws no more than 1.25A. The unit is rated for 30W total, so it is better matched to lower-power 24V electronics than to larger 24V loads. Its constant-voltage operation is intended for equipment expecting a fixed 24V rail.
Can I use this 24V converter in a vehicle, mobile machine, or vibration-prone control box?
The published specifications list 5G vibration resistance and IEC61373 shock and vibration compliance, which supports use in equipment exposed to movement or mechanical shock. It also operates from -40C to +55C at full load and up to +70C with derating or an external base plate, so it covers a broad temperature range for mobile and industrial electronics. The available output is still limited to 24V, 1.25A, and 30W.
Is the RSD-30L-24 suitable for outdoor or washdown environments?
The operating temperature range is -40C to +55C at full load, extending to +70C at 60% load or with an external base plate, so the temperature rating is broad. However, no IP rating is listed in the provided specs, so outdoor exposure or washdown use is not confirmed by the data here. It is safer to treat it as a unit for protected enclosures unless a separate enclosure rating is provided.
How does the RSD-30L-24 compare with the other compact RSD-30L models?
Within the RSD-30L group, the RSD-30L-12 is 30W at 12V and 2.5A, the RSD-30L-24 is 30W at 24V and 1.25A, the RSD-30L-5 is 30W at 5V and 6A, and the RSD-30L-3.3 is 19.8W at 3.3V and 6A. All share the same 113.0 x 60.0 x 25.0 mm dimensions and 0.25 kg weight in the provided specs. The main difference is the output voltage and corresponding output current.
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