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CHAPTER 2: Introduction
2. Introduction
Transient surges can enter electronic equipment
through any pathway provided. Even if a facility has a
reliable AC power protection system in place, transient
surge energies generated within a building by sources
such as inductive load switching, ground loop currents,
and electrostatic discharge are clamped by the power
protector into the communication ground, damaging
expensive communications hardware.
The Multiport Hub Protectors guard equipment
networked at distances greater than 30 feet (9.1 m) and
for use in high lightning areas. They give added security
to electronic devices with extremely low tolerance for
voltage rises or ground loop energies. The surge
protector comes in 4- (SP530A-R2), 8- (SP531A-R2), and
12-Port (SP532A-R2) versions. Figure 2-1 illustrates the
front and side views of the available models.
The protectors guard 100BASE-T Ethernet, RS-422,
RS-485, or RS-423 interfaces. You can configure them
to incorporate solid-state thyristors or avalanche diode
technology with high-speed clamping of less than
5 nanoseconds. Combined into a compact interface
unit, the devices exhibit an extremely fast response time
of less than 5 nanoseconds.
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