Friday 1 February 2019

Devices That Use High Voltage Contactor

By William McDonald


Electrical circuits are started as well as cut off by valves built in electrical devices. Such components vary in the amount of current they can withstand. There are low versus strong power fuses. Notably, a high voltage contactor is widely used for controlling extremely great currents. Numerous devices use this and a few are discussed below.

Connectors have a number of applications. It is paramount to first understand the features of valves before delving into these applications. Contacts have three components. Each of these is designed to perform differently. The first part is known as a coil. Coils are used to power switches on or off. They are coiled to help pass current fast as well as cut it off. Secondly, there is a pole. Poles are suited for transmitting current. Then there are auxiliaries which panel and signals circuit usage.

In huge buildings such as business premises and office apartments, it is common for a large amount of electric power to be used up. In such cases, connectors are used in paneling lighting. This enables power to be controlled from one specific point. Additionally, those valves efficiently supply large currents to such buildings. Latching switches are preferred in big buildings since coils consume a lot of electric energy in those applications.

The other usage is in vacuum contacts. These are specialized switches whose valves are compressed in vacuum containers. During transmission, these valves are pushed by suppressing arcs. They become smaller hence occupy little space than before. This makes it possible to transmit huge currents at the same time. Since switches are internal and need no air, vacuum switches can be used in dirty surroundings such as in mining. This is because they can easily move circuit breakers immersed in oil. Likewise, electric signals are easily broken hence applicable in fast lighting elements.

Another application of these valves is in mercury relay. Mercury displacement transmitter uses liquid mercury. This substance is contained in an insulated bottle which is completely sealed. This acts as the powering agent. Notably, one feature of such transmitters is that they prevent corrosion in components used in cycling. However, mercury is not eco-friendly. Thus those transmitters are quickly being displaced with non-mercury great current switches.

Another usage is in mercury-wetted relays. These are transmitters whereby valves are first moistened with mercury before use. However, they may not be categorized as contacts due to the amount of voltage used. Normally, they operate on currents below 15 amperes, unlike other circuits.

Next usage is in transformers also known as the camshaft. Sometimes, several contacts may be used sequentially. In such cases, single electromagnets are ineffective thus the need for the camshaft. These camshafts are operated by a power-driven motor or air-filled cylinders. Initially, camshafts were vital in speeding up power-controlled locomotives. Additionally, they are applied in inner combustion machines which are used to control poppet valves.

The last usage is in magnetic starters. Magnetic starters are components used for starting off electric motors. Such devices utilize valves in regulating how much power is transmitted through coils. This way, switches cannot overload at any time. Similarly, they offer automatic breaking in case of power breakage.




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