IN Brief:
- FORTEC UK has introduced Delta’s 2.5kW MEB-2500 enclosed medical power-supply family.
- The range provides 24V, 36V, or 48V outputs from a 1U-height enclosure.
- Two means of patient protection, PMBus, active sharing, and Class B EMI support regulated equipment design.
FORTEC United Kingdom has introduced Delta’s MEB-2500 enclosed medical power-supply family, delivering up to 2.5kW from a 271 × 127 × 40.5mm package.
The 1U-height units are available with 24V, 36V, or 48V outputs, supporting high-current low-voltage loads and higher-voltage distribution architectures within medical and laboratory equipment. The range accepts an 85–264Vac input and maintains full rated output at ambient temperatures up to 50°C.
Power density reaches 29.5W/in³, excluding the busbar terminal arrangement, while the complete unit weighs approximately 1.95kg. Efficiency varies with the selected output model and operating point, reaching 94% for the 48V version under specified conditions.
Medical safety provisions include two means of patient protection and suitability for Type BF equipment. The series also meets IEC 60601-1-2 fourth-edition immunity requirements and Class B limits for conducted and radiated electromagnetic emissions.
A 5V, 2A standby output can supply system controllers, monitoring circuits, interfaces, or sequencing logic while the principal output is disabled. Remote on-off and power-good functions are available with alternative default states, allowing startup behaviour to be aligned with the equipment’s control and safety architecture.
PMBus 1.3 provides access to digital monitoring and management functions, while intelligent fan-speed control adjusts cooling according to load and thermal conditions. Conformal coating gives the internal circuitry added protection against moisture and contamination.
Active current sharing allows several supplies to operate in parallel for higher total output or redundant power arrangements. Parallel systems still require engineering around fault isolation, wiring resistance, output protection, airflow, and the behaviour of the remaining supplies after one module fails or is removed.
The MEB-2500 extends a portfolio that recently gained open-frame, enclosed, and top-fan cooled 500W medical power options. The new 2.5kW platform serves imaging, diagnostics, clinical analysis, laboratory automation, medical robotics, and other equipment with substantially larger electrical loads.
High-power medical systems combine demanding loads within enclosures constrained by patient safety, noise, size, and thermal limits. Motors, pumps, heaters, robotic axes, detectors, compute platforms, and imaging electronics may produce sharply different transient profiles, while sensitive measurement channels must remain isolated from switching noise.
Two means of patient protection address insulation between the mains input and patient-connected or accessible circuits, but compliance remains dependent on the complete equipment. Protective earth, creepage, clearance, leakage current, cabling, secondary converters, connectors, and the classification of applied parts must all be assessed together.
Electromagnetic compatibility is similarly affected by integration. A supply meeting Class B limits during its own testing can still form part of a non-compliant system when long cables, enclosure apertures, grounding arrangements, motor drives, or downstream converters create new conducted and radiated paths.
PMBus monitoring provides more diagnostic detail than a simple power-good line. Voltage, current, temperature, fault status, and operating records can be incorporated into servicing or preventive maintenance, helping distinguish a power-stage problem from an overloaded rail, obstructed airflow, or downstream equipment fault.
Any digital control path must retain safe defaults when communication is interrupted. Access to configuration commands also requires appropriate restrictions where the power system connects to a wider management network, while parameter and firmware changes need the same configuration control applied to other embedded subsystems.
Thermal performance remains central at 2.5kW because even a supply operating above 90% efficiency can dissipate substantial heat at full load. Inlet temperature, airflow resistance, fan obstruction, dust, altitude, and neighbouring heat sources determine whether rated output can be maintained throughout the intended operating life.
The MEB-2500 combines high output, patient-protection isolation, digital monitoring, and parallel operation within a compact enclosure. Its successful integration will rest on the surrounding electrical, mechanical, thermal, EMC, and regulatory design, particularly where increased computing and automation are raising power demand without a corresponding increase in equipment volume.
