Do You Need Information On Transfer Switches?

An automatic transfer switch is essential whenever there is a need for transfer a power supply source. The transfer of a power source can be from the main source to secondary, tertiary. Transfer switches are very common in power distribution systems. They are also present in places where there are generators and backup power facilities. Most hospitals and other critical business services have backup generators.

Automatic transfer switches are more convenient than the manual transfer switches. Transfer switches are very useful, because when the main power source is interrupted, they automatically transfer the power source to another electrical system.

They are also helpful when there are changes in voltage power supply. For example, if the voltage power supply is altered, it can cause damage to the internal circuit of your appliances and computers at the office or at home. However, with an automatic transfer switch, the transfer of power to a generator or back-up power source is initiated. Until the voltage of the main power supply is stable, the power supply is not transferred back to it.

A Generator automatic transfer switch is the other name for auto transfer switch. It comes with an extra electronics, like a computer, that monitors the activity of incoming power. Also, it checks the whole circuit for voltage sags, brownouts, power spikes and power surges.

When there are power disruptions, the transfer switches automatically begin the transfer of loads. It commands the emergency power supply to warm up if there are irregularities on the main power supply. When the emergency power supply reaches the proper voltage, it is ready to provide power. It remains to act as the power source until the main power supply has solved its inconsistencies for a certain period of time.

When the main power supply is ready to assume its main function, the transfer switch turns off the generator after it unloads the electricity and has allowed some time for cooling. Auto transfer switches are only advisable for usages such as supplying power to critical circuits or its whole electrical sub panels.

In addition, a power transfer switch supports load shedding or prioritization of optional circuits like heating and cooling of equipment. During a power transfer in a usual emergency system, a momentary interruption of power to the load is inherent. Such power outage is inconsequential especially if it is not more than 1/6 of a second.

Nevertheless, there are certain loads that are easily affected even by the smallest power outage. Also, there are conditions during operation when it is deemed necessary to transfer loads with zero power disruption. This is made possible with a closed transition transfer switch.

A closed transition transfer switch is a make-before-break type. In initiating load transfer using such methodology, it functions in a make-before-break mode-making a contact with another power source before it breaks its contact from the other source. However, this is only possible when both power sources are respectively synchronized.

The open transition transfer switches are the opposite of the closed transition. They are the break-before-make automatic transfer switches. They first break contact from existing power source before they make a contact with another power source. An open transfer switch is helpful in the presence of manual three-position circuit breakers or open automatic transfer switches.