2018-05-30
A surge-protected rack power socket is also known as a surge protection PDU.
A surge, also called a transient, is — as the name suggests — an overvoltage that momentarily exceeds the normal operating voltage.
In essence, a surge is a violent pulse that occurs within a few millionths of a second.
Possible causes of surges include heavy equipment, short circuits, power switching and large motors. Products with built-in surge suppression can effectively absorb sudden bursts of energy and protect connected equipment from damage.
A surge protector, also called a signal lightning arrester, is an electronic device that protects all kinds of electronic equipment, instruments and communication lines. When external interference suddenly produces a current or voltage spike in a circuit or communication line, the surge protector conducts and diverts it within a very short time, preventing damage to other equipment in the circuit.
In the cloud era, data center equipment needs lightning-safe power supply systems. Common rack power strips today are simple in structure, with no protective measures — simple functions and high usage risk. When lightning protection fails, the sockets can lose power and cause serious losses. Equipping rack power sockets with surge-protection converters that raise an alarm when protection fails — while keeping the sockets powered so critical equipment never goes down — is therefore essential.
