What is STS static transfer switch?

What is STS static transfer switch?

Static Transfer Systems (STS) are intelligent switches providing increased supply availability, automatically transferring loads to alternative power sources when the primary power source fails or is not available. They enable flexible site maintenance ensuring high availability.

What is the difference between ATS and AMF?

The difference between the two is how the generator is started. ATS includes a volt free contact that the generator uses to start/stop via its set mounted control panel, while the AMF includes a generator controller with start stop, speed, oil pressure, water temperature and full level alarms.

What is the difference between an ATS and switchgear?

When generators are up to speed and rated power, ATS switches to emergency generator power. Switchgear and generator software allow for automatic generator paralleling. Switchgear distributes power to designated circuits. When power is restored ATS switches to utility power and generators are shutdown.

What is the purpose of static switch in UPS?

A static bypass switch automatically and instantaneously transfers the load to the mains electricity supply when there’s an internal fault or failure with the UPS system.

What is static transfer switch in UPS?

Static Transfer Switches automatically transfer power to a stable alternate source in less than 4ms under normal operating conditions. Even under extreme conditions, such as 180 degrees out of phase, the STS will have detection and automatic transfer times that are up to 10 times faster than many other switches.

What is a static switch in UPS?

While the UPS is on-line, using either mains or battery power, the static switch is in ‘On UPS’ state, connecting the inverter output to the load. When supplies return to normal, the static switch automatically transfers the load back to bypass while the battery recharges and the inverter reverts to standby mode.

What are the two types of automatic transfer switches?

There are two types of automatic transfer switches, circuit breaker and contactor. The circuit breaker type has two interlocked circuit breakers, so only one breaker can be closed any anytime. The contactor type is simpler design that is electrically operated and mechanically held.

How does an ATS switch work?

How Does an Automatic Transfer Switch Work? An automatic transfer switch, or ATS switch, connects your standby generator to your home. When the transfer switch detects a power outage, it switches your home to generator power. Afterward, it detects when the power is restored and switches your home back to utility power.

What is the difference between a static switch and an automatic transfer switch?

A Static Transfer Switch (STS) utilizes a static electronic component (SCR), which permits a transfer in less than four milliseconds (1/4 of an electrical cycle). On the other hand, an Automatic Transfer Switch (ATS) relies on moving parts, and makes a significantly slower transfer than Static Transfer Switches.

What is the function of static switch s2 in offline UPS?

In offline UPS systems, however, the static switch feeds the critical load from the raw mains under normal conditions, and only changes to the UPS if the mains fails.

How does an STS work?

An STS is a third-party web service that authenticates clients by validating credentials and issuing security tokens across different formats (for example, SAML, Kerberos, or X. An STS has its own security requirements for authenticating and authorizing requests for tokens.

What is a static transfer switch?

Static Transfer Switch. 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.

What is a generator transfer switch?

The normal utility power source fails.

The transfer switch shifts the load to the emergency power source when power from the generator or backup utility feed is stable and within prescribed voltage and frequency tolerances.

The transfer switch returns the load from the emergency power source to the normal power source when utility power is restored.

What is a static switch?

In UPS, static switch is an electronic switch used to bypass a mechanical switch. Normally used when loads are switched from inverter to mains. Static switch is an automatic switch that can only be activated depending on the condition of the UPS.

What is ATS controller?

An ATS controller s used where you have to control a diesel generator connected to a load for emergency power in a standby configuration. ATS means Automatic Transfer Switch. An ATS controller governs a transfer switch via relays and software subroutines.