The complete overview of Safe Transfer Switch (STS)

1
The complete overview of Safe Transfer Switch
(STS)

• By Netrack

2
Safe Transfer Switch (STS) Continuous electricity
supply is a significant necessity for all
electronic devices, a single laptop, or a massive
data center. Even a brief disruption in power or
a power outage can disturb the working and damage
the system in some cases. That is why modern
systems that perform critical operations have
dual power sources for providing redundant power
supply. However, many single power sources need
redundancy for business continuity. A safe
transfer switch is designed to cater to such
single power sources. What is a safe transfer
switch? A safe transfer switch is an electrical
device that switches the load between two power
sources. It can be done manually or automatically
by switching when one of the sources has lost
power. In a manual process, an operator transfers
the power from one to another, while in an
automatic mode, the device senses it and switches
accordingly. By adding an STS, it creates another
layer of failure for power redundancy.   Netracks
STS is designed to take two inputs for two
different sources and a provide single output.
This power output can then be connected to the
rack power distribution units. In addition, the
Netrack STS is designed using thyristor-based
reliable technology and can be used in
applications that need high-power switching.  
3
The STS is equipped with control panel that
provides information on power source and fault
indication. It provides the lowest switching time
of 5ms, which is among the best in the industry.
It is a sophisticated device that ensures an
uninterrupted power supply with instantaneous
load reconversion to the main input power.   Safe
Transfer Switch Applications   STS is used in
many industries like the electric power industry,
petrochemical, and heavily power-reliant
industries. It is also used in IT applications,
building automation systems, data centers,
security systems, and sensitive equipment to
power failure.
4

•  
• Features of Safe Transfer switch
•  
• It creates a power redundancy for single power
  source devices.
• Provides a standard switching time of 5ms.
• It has two input sources and one output source.
• It is available in a single phase with two
  variants of 16A and 32A
• It can be used with existing power distribution
  units as the output is IEC 60309 socket.
• There is very little transition time between
  sources. When the sources are in sync, the switch
  time is 5ms and up to 15ms when not in sync.
• Though the Safe transfer switch works
  automatically, there is an option of manual
  bypass that can be used during any maintenance
  activity.
• User interface displays of source and fault
  indication are possible.
• Even at full load, it provides efficiency of more
  than 98.
• The device is rack-mountable.
• It has a voltage tolerance of /- 15 and a
  frequency tolerance of 40 to 70 Hz.

5
Advantages of using Netrack STS   Netrack STS
does a lot for your business apart from boosting
productivity. Businesses get   Power reliability
If there is an unexpected outage or loss of
power, business comes to a standstill. It not
only results in downtime but also leads to loss
of time. By using an STS, you prevent
this. Simplified operations Using an automatic
STS, the power is transferred automatically and
switches back seamlessly when power is
restored. Safety Handling a power source can be
quite dangerous having a safe transfer switch
ensures it removes the dangers of outage for the
device and other resources. With the lowest
possible switching time, Netrack offers automatic
transfer switches that are one of the best in the
industry.