Bel Power Solutions DC Power Distribution Unit (PDU) is used to distribute DC auxiliary power and monitoring signals in Open Racks. This device is installed in an IT chassis and works in conjunction with the OCP V2 Open Rack. The DC supply voltage is distributed from the V2 Power Shelves and it is used to supply the switches and a rack-monitoring device. The monitoring signals are distributed from the V2 Power Shelves to the rack-monitoring device. • Designed for V2 Power shelf • Input voltage range: 40 – 72 VDC , max 15 A (x2) • 2x Power DC inputs • 4x Power DC outputs • Different output power connector for higher flexibility • Interconnections for monitoring and communication signals to rack monitor trough RJ45 connectors • Full compatibility with Open Compute project specification • Robust mechanical design • UL approved Link to OCP specification: http://www.opencompute.org/wiki/Open_Rack/SpecsAndDesigns DC PDU 2 DC PDU YSD.00134 A maximum of 600 W total is allocated to power the switches and a rack-monitoring device. Each Power Shelf is capable of providing the 600 W by itself, or, if two shelves are present in the rack, each will supply 300 W. Each of the 2 DC inputs from the shelves is connected in the PDU to 2 separate outputs implemented with different connectors (Molex and Anderson Power). The picture below shows the power electrical connections in the PDU. Figure 1: Electrical Schematic The PDU collects the monitoring and communication signals from the Power Shelves and distributes them to the Rack-Monitoring device. The signal connectors are standard RJ45. The picture below shows the electrical connections of the monitoring and communication signals in the PDU. NOTE: The colors in the following figure are not standard. Figure 2. Communication Wiring [email protected] DC PDU 3 The table below shows a summary of the PDU input electrical characteristics and interfaces: Nominal DC Input Voltage 54 Input Voltage Range VDC 40 Input Current 72 15 Input Power Connectors 2x Molex Sabre Rack Monitor Input 2x RJ45 input connectors connected from each power shelf VDC A 2.1 INPUT POWER CONNECTIONS 2x Input connectors - female Molex Saber 7.50 mm receptacle housing with a latch (44441-2003) with the Molex Sabre crimp female terminal (43375-0001). PIN DESCRIPTION 1 +54 VDC (red) 2 RTN (black) 3 GND (green) Figure 3. Molex 44441-2003 The table below shows a summary of the PDU output electrical characteristics and interfaces: 2 pcs Output Connectors 2 pcs connected via right angle connectors on the PCB Output Voltage Range 40 Output Current 72 15 Communication Connector RJ45 LED Indicator 2 pcs to indicate that a valid 54 VDC nominal voltage is present (40 to 72 VDC). VDC A Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2018 Bel Power Solutions & Protection BCD.00765_003 Asia-Pacific +86 755 298 85888 DC PDU 4 3.1 OUTPUT POWER CONNECTIONS The PDU implements 2 +2 output Power connectors implemented with 2 different connectors types. Below the implemented PNs from Molex and APP are shown. Figure 4. DC Output Connectors Agency Approvals High-Pot Test UL 60950-1 CE Mark RoHS Compliant DC input side (+54 VDC and return) to the earth ground chassis (GND) 750 Operating Altitude Non-Operating (without derating) VDC 3000 10000 15000 49000 m ft m ft Operating Ambient Temperature -5 +45 °C Storage Temperature -40 +70 °C -55 +85 °C 10 5 90 95 % 5 140 g 0.25 0.75 g Transportation Temperature Relative Humidity Shock Sinusoidal Vibration short term storage, 72 hours Operating: Non-condescending Non-operating: 38.7°C maximum wet bulb temperature with no cosmetic damage Operating : 11 ms, 3 half-sine wave shocks, 3 axes Non-Operating: 2 ms, 6 half-sine wave shocks, 3 axes Operating: zero to peak, 10 to 500 Hz, 0.25 oct/min Non-Operating : zero-to-peak, 10 to 500 Hz, 0.5 oct/min [email protected] DC PDU Dimensions (W x H x D) 5 248 x 45 x 121 mm Figure 5. Dimension Drawing DC PDU (Top View) Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2018 Bel Power Solutions & Protection BCD.00765_003 Asia-Pacific +86 755 298 85888 DC PDU 6 Figure 6. Dimension Drawing DC PDU (Side View) Figure 7. Dimension Drawing DC PDU (Side View) NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. [email protected]