EMH250PS12 XP Power

EMH Series 250 W & 350 W Forced-cooled Industry Standard 3x 5x 1.43Format IT & Medical (BF) Approvals 80 V - 275 VAC Operation Optional ORing Diode (EMH350D Models) Analog & PMBus Signals Options (EMH350) 5 V Standby (EMH350) 3 Year Warranty The EMH series of ultra compact high power density supplies deliver 250 W and 350W within the industry standard 3 x 5 (76mm x 127mm) footprint. They achieve this very high power density with a minimal 12 CFM forced air requirement and a profile of just 1.4 (36 mm) making them suitable for 1U and a host of other applications. All models feature a main output and 12V/0.6A fan supply output along with IEC60950 (IT) and IEC60601 BF (Medical) family safety approvals, thus including patient contact equipment in the wide range of possible applications. The EMH350 has a 5V/2A standby rail and can be supplied with a range of optional analogue and digital, PMBus compatible signals as well as a variable speed fan & cover. The EMH350D models have built in Oring diodes for use in redundant applications.xppower.com Models and Ratings Models & Ratings (1) (1) Output Voltage V1 Output Current V1 Fan Supply V3 Output Power Model Number 12 V 21.0 A 12 V/0.6 A 252 W EMH250PS12 18 V 14.0 A 12 V/0.6 A 252 W EMH250PS18 24 V 10.5 A 12 V/0.6 A 252 W EMH250PS24 48 V 5.2 A 12 V/0.6 A 250 W EMH250PS48 (2) (2) Output Voltage V1 Output Current V1 Standby Supply V2 Fan Supply V3 Output Power Model Number 12 V 29.2 A 5.0 V / 2.0 A 12 V/0.6 A 354 W EMH350PS12 18 V 19.5 A 5.0 V / 2.0 A 12 V/0.6 A 354 W EMH350PS18 24 V 14.6 A 5.0 V / 2.0 A 12 V/0.6 A 355 W EMH350PS24 48 V 7.3 A 5.0 V / 2.0 A 12 V/0.6 A 354 W EMH350PS48 (3) Output Voltage V1 Output Current V1 Standby Supply V2 Fan Supply V3 Output Power Model Number 12 V 29.2 A 5.0 V / 2.0 A 12 V/0.6 A 354 W EMH350PS12D 18 V 19.5 A 5.0 V / 2.0 A 12 V/0.6 A 354 W EMH350PS18D 24 V 14.6 A 5.0 V / 2.0 A 12 V/0.6 A 355 W EMH350PS24D 48 V 7.3 A 5.0 V / 2.0 A 12 V/0.6 A 354 W EMH350PS48D Notes: 1. The EMH250 is available with a top mounted fan cover option. Add suffix -TF to model number e.g. EMH250PS12-TF. See mechanical drawing later in this datasheet. The fan supply V3 is no longer available with this option as it is used to drive the fan. 2. The EMH350 is available with various analog, digital signal and cover options. See availability table and mechanical drawing later in this datasheet. The fan supply V3 is no longer available with cover options as it is used to drive the fan. 3. The EMH350D models are fitted with an integral ORing diode and are also available with various analog and digital signal options. See availability table and mechanical drawing later in this datasheet. Input Characteristics Characteristic Minimum Typical Maximum Units Notes & Conditions Input Voltage - Operating 80 115/230 275 VAC Derate output power < 90 VAC. See fig. 1 Input Frequency 47 50/60 63 Hz > Power Factor 0.9 EN61000-3-2 class A compliant Input Current - No Load 0.05/0.03 A 115/230 VAC 2.6/1.3 115/230 VAC - EMH250 Input Current - Full Load A 3.7/1.8 115/230 VAC - EMH350 Inrush Current 40 A 230 VAC cold start, 25 C 5.8 EMH250 No Load Input Power 6.4 W EMH350 1.0 EMH350 with output inhibit (via signal option) Earth Leakage Current 90/160 250 A 115/230 VAC/50 Hz (Typ.), 264 VAC/60 Hz (Max.) Input Protection F10 A/250 V internal fuse in both lines Derating Curve - All EMH250 & EMH350 models 100 Figure 1 90 80 70 60 50 40 80 85 90 264 Input Voltage (VAC) 2 Output Power (%)