RECOM has introduced the RACM1200-V, a new built-in power supply with ultra-high output power.
Every developer eagerly awaits the moment their prototype finally functions properly, with all critical functions implemented and the software running smoothly (except for diagnostics). At the next meeting, he proudly announced that all that was needed at this stage was EMC certification and a suitable power supply. However, due to limited resources, designing the power supply themselves wasn't a good option as it could lead to missing critical deadlines. Therefore, the team agreed to purchase a third-party product, and the developers began searching for a power supply. While such products are readily available, selecting the right component is often far more complex than it seems. In our case, the product had to meet Standard X, Protection Class Y, and even 2 MOPP, because the power supply had been decided upon for use in a recently launched ventilator. Most importantly, the developers also needed to consider the MTBF value. Imagine a patient connected to the ventilator, and the power supply suddenly fails… This, of course, must be avoided at all costs! Therefore, the developers needed to know how long the power supply could safely operate without maintenance. This article about RECOM's RACM1200-V can answer some of these questions.
RECOM believes that the safest option is the only option, and this was kept in mind when designing the RACM1200-V. The power supply must also pass all the necessary certifications.
The RACM1200-V sets a new standard for compact design, covering an extremely wide power range and operating reliably without fan cooling. A special board ensures effective heat dissipation and delivers up to 1000W of continuous output power. The RACM1200-V features two additional outputs, eliminating the need for an external power supply in some applications, and provides a 12V adjustable system fan output and a 5V/1A standby output.
Because of the 4kVAC isolation voltage between the supply voltage and the output voltage, the RACM1200-V can be used in almost any application requiring power, such as chargers, LED lighting systems, laser equipment, analytical instruments, high-frequency devices, robots, medical chairs, and medical devices that come into direct contact with patients. RECOM can provide designers with power supplies that meet their specifications.
Although the RACM1200-V is certified to IEC 60601-1, it does not guarantee that the equipment to be installed with it will also comply with the standard. However, using a certified power supply is one of the prerequisites for meeting the standard, which not only reduces development costs but also speeds up the certification process for the final product.
The RACM1200-V offers 2MOPP-certified (MOPP = Patient Protection Measures) insulation and minimal leakage current, meaning it meets patient safety standards for medical devices.
The isolation between the signal output and the 5V output and the power supply voltage is 1.5kVAC.
The RACM1200-V series features an integrated EMC filter, easily meeting EN 55032:2015 Class B requirements for radiated and line interference. The new RECOM power supply complies with all international safety standards relevant to industrial applications, IT products, and medical devices.
The RACM1200-V has an input voltage range of 85 VAC to 264 VAC, allowing for continuous output up to 1000W. It features a 40mm high metal housing with a package area of only 102mm x 229mm, allowing for contact cooling. It can deliver up to 1200W of output power for 10 seconds. For continuous 1200W output, the power supply must be equipped with a fan and ensure an airflow of 2.5m/s. This is why the RACM1200-V also features an auxiliary control output for temperature management.
Key data for RACM1200-V
Output power: 1000W at an ambient temperature of 40°C and an input voltage of 230V; up to 1200W when using a fan or short-peak load.
Dimensions including connector (length x width x height): 228.0mm x 96.2mm x 40.0mm; Connector components from other suppliers may be subject to mechanical impact.
Efficiency: 95%, see Figure 1.
Power factor: See Figure 2.
Figure 1: Efficiency vs. Load
Figure 2: Power Factor
Weight: 1kg (standard)
Input voltage: 85V to 264V
Output voltage:
The 24V type can be adjusted from 100mV to 28V via a DIP switch.
The 48V type can be adjusted from 200mV to 56V via a DIP switch.
Maximum output current: 50A @ 24V, 25A @ 48V.
Protection functions for main output and auxiliary voltage:
Overload protection, automatic reset
Overcurrent and short circuit protection, automatic reset
Overheat protection, automatic restart
Temperature range: -40°C to 80°C, derating begins at 50°C; please refer to the datasheet for details.
Service life at 40°C: 88,000 hours
Maximum output voltage ripple: 1% of the output voltage
Output voltage tolerance: typically 1% at 25%°C, up to ±2% at higher temperatures.
Standard certifications: IEC/EN 62368, UL/IEC/EN 60601
Compliant with IEC/EN 61558-2-16, IEC61010-1 and IEC62477-1 OVC II up to 2000m
Cooling is achieved through an aluminum substrate or forced airflow.
Maximum operating altitude: 5000m (IEC/EN62368-1), 4000m (IEC/EN60601)
Auxiliary output voltage: 5V/1A, insulation
Standby power consumption: <1W (EcoDesign)
LED status indicator: Easy to use and provides extra safety.
Remote On/Off: TTL Input
AC OK: Open collector output
PSU good: Open collector output
PSU good: Open collector pin, power supply operating normally, output voltage normal, temperature within permissible range, no internal faults. Provides additional safety, reliability, and power quality.
Maximum patient leakage current: 100μA NC (normal condition) and 500μA SFC (single failure condition).
Medical safety classification: 2MOPP
Precisely controlled output voltage: The power supply is equipped with a remote main output voltage sensor to eliminate line voltage drop and measures and controls the output voltage at relevant points via two additional sensing lines. This solution eliminates line voltage drop in high-current (25A/50A) lines and is activated by two TTL inputs (5V).
Figure 3: Remote sensing main output voltage
Other models in the RACM series:
Figure 4: RACMxx series power supplies for medical applications (from left to right): 230W, 550W, and 1200W
RECOM Power GmbH (www.recom-power.com):
RECOM manufactures a wide range of standard and custom DC/DC and AC/DC converters, with power ratings ranging from under 1W to tens of kW, and also offers switching regulators and LED drivers in various formats. Headquartered in Gmunden, Austria, the company boasts a state-of-the-art logistics, R&D center, and laboratories, and is supported by a global distribution network. RECOM has become a renowned brand for its high quality, integrity, innovation, and excellent customer service.
The RECOM RACM1200-V is a genuine European product: designed in Austria and made in Europe.
