Static transfer switch
STS – Static Transfer Switch are automatic static switching equipments designed to transfer electric loads between two independent AC power sources without interruption. The static transfer switch (STS) is an electrical device that allows instantaneous transfer of power sources to the load. This superior switching time means that if one power source fails the STS switches to the back-up power source so quickly that the load never recognizes the transfer made. Fast-acting STS are increasingly being applied to protect large loads and entire facilities from short-duration power disturbances. These products use solid-state power electronics or "static" switching.
Viruses, spyware, and network threats get most of the attention, but environmental factors like heat, humidity, airflow, smoke, and electricity can be equally devastating to IT equipment, and thus to a company’s operation.
The basic STS unit consists of three major parts:
- Easy monitoring all parameters on LCD display
- Fast microcontroller (32 mips)
- Power blackout protection
- Automatic static switching
- Remote monitoring of input power sources
- Easy static and mechanical transfer between separate input sources
- Remote management of power events
- Power event logging
- Advanced RS232 communication features
- DRY contact alarm interface
- Password protected login system from remote site (timed Access)
- 2 redundant power supplies for electronic boards (hot swappable)
- Easy front access to all components inside of the STS
- Second protection cover on live circuits which prevents electrical shock
- Input sources protected by fuses
- 3 positioned Maintenance bypass switch which prevents cross currents between input sources
- User adjustable parameters by entering a password.
- Built in real time clock.
- Alarm history (with their date and time)
- Automatic transfer test from a remote site or using front panel