Power Distribution Unit

from Wikipedia, the free encyclopedia

A power distribution unit ( PDU ; German  Power Distribution Unit is a certain type of) multiple power strip , which, especially in data centers is used and there mostly in 19-inch racks is installed or on the back of the rack.

properties

In its basic form, a PDU only comprises several power supply sockets to which the various consumers, e.g. B. servers or switches can be connected, which differs from ordinary multiple socket outlets only through their special 19 "design and possibly the type of socket.

In addition, some models offer various additional functions, such as B. an overvoltage protection , as it is also used with higher quality multiple sockets, or the remote control of the individual sockets.

Via such remote control, for example, individual consumers can be switched on and off directly as required, time controls or other switching sequences such as a watchdog function can be implemented. In addition, various information and measured values ​​can be called up, such as B. the electrical energy consumption per individual socket. Some models provide additional readings about the temperature and humidity in the rack, or the option of connecting a webcam to monitor the premises. Furthermore, a cost evaluation for the individual consumers can be implemented in order to simplify the determination of the energy costs for the operation of the devices connected to the individual connections. In addition, alarm functions can be set via SNMP or e-mail, which automatically send messages when threshold values ​​are exceeded. Such remote control takes the form of out of band administration, depending on the device, for example via Modbus , or via Internet Protocol (IP) in combination with SNMP or HTTP.

To connect the electrical consumers, device plugs according to the IEC-60320 standard (C13 and C19) for single-phase mains voltage are used for connection to the low-voltage network by means of a mains plug .

Web links