Wednesday 17 March 2021

Automatic Transfer Switches: Purpose and Function

Much as our electricity suppliers do their best to keep power available on a continuous basis, there are, nonetheless, occasions when the power fails. This can be for one of many different reasons, but when it happens to you it can be anything from a bit of a nuisance to an outright disaster. It rather depends upon your situation.

For instance, if you were watching a programme on the TV, it may be annoying, but it is hardly going to be life-changing. However, if you were a surgeon in the middle of a tricky operation when that same power outage occurred and all the lights went out, that can be extremely dangerous for the patient.

Furthermore, power outages can occur for a few minutes or may continue for many days. For example, after the Great Storm of 1987 many people were without power for up to two weeks as engineers worked to get power lines back up and working again. This is why some sort of backup is vital in many situations, and for many people the answer is a generator. At Blades Power Generation, we supply both new and used generators.

Since one doesn’t want to have run outside to the generator in order to start it up, the answer is what is known as an automatic transfer switch, or ATS as it is known. Power backup is often by a generator but can also be a second mains supply. In the latter case, the primary power supply into a building is backed up by a secondary supply and the ATS changes over to that instead of a generator.

If using a generator for the secondary supply, it is essential to check it and give it a test run on regular basis so that one can be confident that it will perform as required if there is an outage. 

Of course, there are many situations where power is required other than simply inside a home or other building. For instance, if there is an outage in an area, all of the streetlights and traffic lights would go out. This means that traffic slows to a crawl at crossroads, car accidents increase, and emergency services cannot get to where they need to be. An automatic transfer switch overcomes these issues.

Of course, there is another issue, and that is that the power can be restored at any moment. When this happens, it can be dangerous, as there would be a power overload and this can cause wiring and appliances to burn. However, the ATS works both ways, so that as soon as power is restored it switches back again and allows the generator, if one is being used, to rest. 


Monday 1 March 2021

Revealing the Importance of Manual Changeover Switch

In this era, we cannot imagine a home without a power supply. However, electricity may turn deadly for people who are not accustomed to it. With a manual changeover switch, the homeowner just needs to flip a switch to change the power draw from commercial grid to generator.


How To Hook Up A Manual Changeover Switch?

The steps to hook up a manual changeover switch are as follows



manual changeover switch

-

       Connect the armored cable from the transfer switch back to the electric panel

       Now, connect the ground and the neutral wires from the transfer switch to the correct bus bars present on the main panel

       Identify the first circuit that the generator will power

       Take out the power wire from the existing circuit breaker

Expenses Of Hooking Up A Manual Changeover Switch

A manual changeover switch may take approximately $500 to $900 to install. This amount includes labor charges.

What Is a Three Phase Manual Transfer Switch?

A three-phase manual transfer switch is used to switch between two power supplies. Alternately, it may be used to switch in between loads. Hence, they may also be used as isolation switches. Two most commonly used three-phase manual transfer switches are as follows-

       A compact changeover switch- It is rated 20 Ampere to 125 Ampere.

       A heavy-duty unit- It is rated between 63A to 3150 Amps

Features of Manual Transfer Switch?

The features of a manual transfer switch are as follows-

       Auxiliary Contact Kit-

It is pre-wired with terminal blocks. It is also offered as a standard feature with open execution manual changeover switches.

       Handle

It has a flip-flop operating handle for ratings 250 AMP and above. It enables the users to use the switch with both hands. The handle also allows padlocking in its OFF position. It has three padlocks ranging from 05 to 07. The defeat feature of the handle is available both in the On state and during the restoration of the panel door

       Compact Design

       Clear termination access

       Permission to select the manual and auto mode

       Auxiliary contacts

       Fuse Protection

       Padlocking

       Flexibility in mounting

Conclusion

Product development is an ongoing process. The main motive behind designing a changeover switch is to transfer electricity from a commercial power grid to a local generator. This transfer takes place when no outage occurs.  Thus, when the homeowners or the business owners experience a power failure, they may switch over to the generator just by pressing the manual changeover switch.